Search results

Search for "XPS" in Full Text gives 378 result(s) in Beilstein Journal of Nanotechnology. Showing first 200.

Single-layer graphene oxide film grown on α-Al2O3(0001) for use as an adsorbent

  • Shiro Entani,
  • Mitsunori Honda,
  • Masaru Takizawa and
  • Makoto Kohda

Beilstein J. Nanotechnol. 2025, 16, 1082–1087, doi:10.3762/bjnano.16.79

Graphical Abstract
  • Figure 1 shows an atomic force microscopy (AFM) image of SLG and SLGO on α-Al2O3(0001) substrates. The as-grown SLG film has an atomically flat surface and wrinkles with its height less than 0.4 nm [18]. The single layer of graphene was confirmed through X-ray photoelectron spectroscopy (XPS) peak
  • findings reported in [22]. At the same time, the significant changes arose after the oxidization of SLG in the C 1s core XPS and C K-edge near-edge X-ray absorption fine structure (NEXAFS) spectra. Figure 3a shows C 1s XPS spectra of SLG and SLGO. In SLG, an intense peak is observed at 283.4 eV. The C 1s
  • XPS spectra of SLG/α-Al2O3(0001) is shifted to the lower binding energies by 1.0 eV compared with that of graphite (284.4 eV) [23]. This is due to p-type doping of SLG associated with a strong electrostatic interaction between SLG and the α-Al2O3(0001) at the interface [18]. In SLGO, on the other hand
PDF
Album
Full Research Paper
Published 10 Jul 2025

Synthesis of biowaste-derived carbon-dot-mediated silver nanoparticles and the evaluation of electrochemical properties for supercapacitor electrodes

  • Navya Kumari Tenkayala,
  • Chandan Kumar Maity,
  • Md Moniruzzaman and
  • Subramani Devaraju

Beilstein J. Nanotechnol. 2025, 16, 933–943, doi:10.3762/bjnano.16.71

Graphical Abstract
  • ), (111), (121), (200), and (311) planes, which can be seen in the face-centered cubic structure of silver [28][29]. The XRD analysis of the PG-CDs-AgNPs produced via PG-CDs mediated reduction resembles the crystalline phase as referenced by (JCPDS File No. 84-0713) data [30]. Furthermore, the XPS
  • analysis was implemented to study the elemental composition of PG-CDs-AgNPs and the corresponding chemical interaction between PG-CDs and AgNPs, as depicted in Figure 2b–d. As illustrated in Figure 2b, XPS total survey profile of the PG-CDs-AgNPs is composed of carbon and silver elements, with binding
  • energies of 285 and 368 eV, respectively. The high-resolution individual elemental XPS spectra of C 1s and Ag 3d are exhibited in Figure 2c–d. As shown in Figure 2d, the C 1s spectrum of the PG-CDs-AgNPs composite exhibited four primary peaks at binding energies of 282.9, 285.3, 287.1, and 288.5 eV. These
PDF
Album
Supp Info
Full Research Paper
Published 24 Jun 2025

Structural and magnetic properties of microwave-synthesized reduced graphene oxide/VO2/Fe2O3 nanocomposite

  • Sumanta Sahoo,
  • Ankur Sood and
  • Sung Soo Han

Beilstein J. Nanotechnol. 2025, 16, 921–932, doi:10.3762/bjnano.16.70

Graphical Abstract
  • the NCs. The Raman spectra of rGO and the related NCs were recorded through the “XploRA plus HORIBA” instrument with a laser excitation of 532 nm. Additionally, the surface analysis was performed using X-ray photoelectron spectroscopy measurements (XPS, Thermofisher Scientific) functioning at 12 kV
  • these elements in the NC (Figure 6i). Further, to understand the surface electronic arrangement of the elements present in GVF, XPS analysis was performed. Figure 7a represents the survey spectrum, which confirms the presence of V, Fe, and O (derived from the metal oxide counterparts), along with the C
  • element (derived from rGO). The data thus obtained was in coherence with the reported results from XRD and EDX analysis. Additionally, the high-resolution XPS spectrum of V 2p designates two major peaks at 516.5 and 523.3 eV, which can be ascribed to the V 2p3/2 and V 2p1/2, respectively (Figure 7b) [40
PDF
Album
Full Research Paper
Published 20 Jun 2025

Heat-induced transformation of nickel-coated polycrystalline diamond film studied in situ by XPS and NEXAFS

  • Olga V. Sedelnikova,
  • Yuliya V. Fedoseeva,
  • Dmitriy V. Gorodetskiy,
  • Yuri N. Palyanov,
  • Elena V. Shlyakhova,
  • Eugene A. Maksimovskiy,
  • Anna A. Makarova,
  • Lyubov G. Bulusheva and
  • Aleksandr V. Okotrub

Beilstein J. Nanotechnol. 2025, 16, 887–898, doi:10.3762/bjnano.16.67

Graphical Abstract
  • thin nickel film deposited by thermal evaporation. The graphitization of diamond with and without a nickel coating as a result of high-vacuum annealing at a temperature of about 1100 °C was studied in situ using synchrotron-based X-ray photoelectron spectroscopy (XPS) and near-edge X-ray absorption
  • fine structure (NEXAFS) methods. XPS data revealed the formation of a thin graphite-like film with low-ordered atomic structure on the surface of the nickel-coated PCD film. The chemical state of sp2-hybridized carbon atoms was found to be insensitive to the face orientation of the diamond micro-sized
  • requires a detailed study. HRTEM has proven very useful for investigating the graphite–diamond interface [19][24]. However, it provides information about local morphology and ordering of diamond surface and graphite layers. X-ray photoelectron spectroscopy (XPS) and near-edge X-ray absorption fine
PDF
Album
Supp Info
Full Research Paper
Published 12 Jun 2025

Insights into the electronic and atomic structures of cerium oxide-based ultrathin films and nanostructures using high-brilliance light sources

  • Paola Luches and
  • Federico Boscherini

Beilstein J. Nanotechnol. 2025, 16, 860–871, doi:10.3762/bjnano.16.65

Graphical Abstract
  • spectroscopy (XPS) has significantly advanced the characterization of low-dimensional cerium oxide structures by offering much higher sensitivity and energy resolution than conventional XPS [21][22][23][24]. In addition, the possibility to select photon energies in a broad range permits to tune the depth
  • the concentration of critical and expensive noble metals in applications. The possibility of tuning the kinetic energy of the photoelectrons by varying the photon energy has also enabled a much higher surface sensitivity than laboratory XPS by selecting a photoelectron kinetic energy close to the
  • minimum of the inelastic mean free path. A study by Simon et al. on porous Pt-doped cerium oxide films prepared by direct liquid injection chemical vapor deposition, comparing conventional and synchrotron-radiation based XPS, has demonstrated that the Pt atoms are uniformly dispersed in the nanoparticles
PDF
Album
Review
Published 10 Jun 2025

Synchrotron X-ray photoelectron spectroscopy study of sodium adsorption on vertically arranged MoS2 layers coated with pyrolytic carbon

  • Alexander V. Okotrub,
  • Anastasiya D. Fedorenko,
  • Anna A. Makarova,
  • Veronica S. Sulyaeva,
  • Yuliya V. Fedoseeva and
  • Lyubov G. Bulusheva

Beilstein J. Nanotechnol. 2025, 16, 847–859, doi:10.3762/bjnano.16.64

Graphical Abstract
  • . In this work, to reveal the effect of carbon coating on the interaction of sodium with the MoS2 layers located vertically relative to the substrate, model experiments were carried out using synchrotron-radiation-induced X-ray photoelectron spectroscopy (XPS). Sodium vapor obtained by heating a sodium
  • source was simultaneously deposited in vacuum on the surfaces of MoS2, pyrolytic carbon, and a hybrid sample obtained by transferring a pyrolytic carbon film onto the MoS2 film. According to XPS data, sodium easily penetrates into the space between the vertical layers of the uncoated film, and its
  • /desorption; sodium vapor; XPS; Introduction Sodium-ion batteries (SIBs) attract increasing interest as a low-cost alternative to lithium-ion batteries due to the abundance and wide availability of sodium. Research in this field is currently focused on developing new electrode materials to increase the
PDF
Album
Supp Info
Full Research Paper
Published 10 Jun 2025

Facile one-step radio frequency magnetron sputtering of Ni/NiO on stainless steel for an efficient electrode for hydrogen evolution reaction

  • Ha Huu Do,
  • Khac Binh Nguyen,
  • Phuong N. Nguyen and
  • Hoai Phuong Pham

Beilstein J. Nanotechnol. 2025, 16, 837–846, doi:10.3762/bjnano.16.63

Graphical Abstract
  • distribution of the primary elements (Ni, O) in the Ni/NiO/SS-10 sample. This outcome revealed that catalytic sites were also uniformly distributed on the electrode’s surface. Figure 5a exhibits the X-ray photoelectron spectroscopy (XPS) survey of the Ni/NiO/SS-10 sample. It can be seen that Ni/NiO/SS gives Ni
  • distribution in materials were studied using EDX. The Raman spectra were studied using a LabRAM-HR Evolution Raman microscope with a laser wavelength of 532 nm. The composition of the thin films was investigated using XPS on a Thermo Scientific K-Alpha XPS system. Electrochemical measurements The HER catalytic
  • mapping of the Ni/NiO/SS-10 sample. (a) Survey XPS spectrum of Ni/NiO/SS-10. High-resolution XPS spectra of (b) Ni 2p3/2 and (c) O 1s. (a) Polarization curves of SS, Ni/NiO/SS-5, Ni/NiO/SS-10, Ni/NiO/SS-15, and Ni/NiO/SS-20 electrodes. (b) Corresponding Tafel slopes of electrodes. (c) Nyquist plots of
PDF
Album
Supp Info
Full Research Paper
Published 06 Jun 2025

Morphology and properties of pyrite nanoparticles obtained by pulsed laser ablation in liquid and thin films for photodetection

  • Akshana Parameswaran Sreekala,
  • Bindu Krishnan,
  • Rene Fabian Cienfuegos Pelaes,
  • David Avellaneda Avellaneda,
  • Josué Amílcar Aguilar-Martínez and
  • Sadasivan Shaji

Beilstein J. Nanotechnol. 2025, 16, 785–805, doi:10.3762/bjnano.16.60

Graphical Abstract
  • SEM analysis of pyrite thin films was performed using a Hitachi Model SU 8020. The NPs were deposited on carbon-coated copper grids for TEM analysis and on silicon substrates for SEM analysis. Using monochromatic Al Kα radiation with an energy of 1486.68 eV, X-ray photoelectron spectroscopy (XPS
  • methanol are 8–85 nm whereas those in acetone range between 6–55 nm. Elemental composition analysis of the NPs By drop-casting these pyrite NPs onto FTO substrates and analyzing them using XPS, the elemental composition of the particles in all the solvents was identified. For binding energy correction of
  • FTO substrate that was utilized for drop casting. Thus, it is presumed that the conversion of pyrite to FeS happens during the process of laser ablation itself. Although FeS was detected alongside FeS2, the XPS results indicate the FeS2 dominance, and the XRD analysis also validates it. A plausible
PDF
Album
Supp Info
Full Research Paper
Published 03 Jun 2025

Changes of structural, magnetic and spectroscopic properties of microencapsulated iron sucrose nanoparticles in saline

  • Sabina Lewińska,
  • Pavlo Aleshkevych,
  • Roman Minikayev,
  • Anna Bajorek,
  • Mateusz Dulski,
  • Krystian Prusik,
  • Tomasz Wojciechowski and
  • Anna Ślawska-Waniewska

Beilstein J. Nanotechnol. 2025, 16, 762–784, doi:10.3762/bjnano.16.59

Graphical Abstract
  • proved that most likely the cores of the nanoparticles are composed of FeO(OH). However, the results of the magnetic measurements do not allow resolving the issues related to the type of FeO(OH) polymorph. Therefore, additional studies such as FTIR, Raman, and XPS were performed, and their results will
  • be presented later in the FTIR and Raman results and analysis and XPS results and analysis sections. Dissolved samples The evolution of the magnetic properties of FS0 with the dissolution time is shown in Figure 8. Figure 8a depicts ZFC–FC relations measured at 50 Oe for all our samples. It can be
  • dissolve first. (The dissolution of the calcium alginate was proved by the XPS studies, and it will be presented and comment in section XPS results and analysis.) The next step is the dissolution of sucrose; whose molecules are polar, thus, they are not a barrier for saline. Without the sucrose shell, the
PDF
Album
Full Research Paper
Published 02 Jun 2025

Thickness dependent oxidation in CrCl3: a scanning X-ray photoemission and Kelvin probe microscopies study

  • Shafaq Kazim,
  • Rahul Parmar,
  • Maryam Azizinia,
  • Matteo Amati,
  • Muhammad Rauf,
  • Andrea Di Cicco,
  • Seyed Javid Rezvani,
  • Dario Mastrippolito,
  • Luca Ottaviano,
  • Tomasz Klimczuk,
  • Luca Gregoratti and
  • Roberto Gunnella

Beilstein J. Nanotechnol. 2025, 16, 749–761, doi:10.3762/bjnano.16.58

Graphical Abstract
  • by the special design of the detection system [23]. In SPEM, the spectra can be recorded in three modes, namely, (1) “focused” (beam size of ≈130 nm), (2) “unfocused” (beam size of ≈2 μm), and (3) the so-called OSA mode with a beam size of ≈75 μm. Figure 4 presents XPS survey spectra obtained with
PDF
Album
Supp Info
Full Research Paper
Published 02 Jun 2025

Nanostructured materials characterized by scanning photoelectron spectromicroscopy

  • Matteo Amati,
  • Alexey S. Shkvarin,
  • Alexander I. Merentsov,
  • Alexander N. Titov,
  • María Taeño,
  • David Maestre,
  • Sarah R. McKibbin,
  • Zygmunt Milosz,
  • Ana Cremades,
  • Rainer Timm and
  • Luca Gregoratti

Beilstein J. Nanotechnol. 2025, 16, 700–710, doi:10.3762/bjnano.16.54

Graphical Abstract
  • ; operando; oxides; scanning photoelectron spectromicroscopy; semiconductor nanowires; transition metal dichalcogenides; XPS; Introduction Nanometer or micrometer-sized materials play a key role in modern technologies in the search of new routes for unforeseen performances generating breakthroughs in
  • enhanced sensitivities are examples of capabilities that modern techniques of characterization in nanotechnology must possess. X-ray photoelectron spectroscopy (XPS) is still one of the fundamental tools for chemical and electronic characterization of surfaces and subsurface layers. In the last three to
  • four decades, several important upgrades have spread the original ability of XPS of chemical analysis to include, for instance, band mapping through angle resolved measurements (ARPES), spin detection, and imaging or spectromicroscopy at a nanoscale spatial resolution [9][10]. It is worth noting that
PDF
Album
Review
Published 23 May 2025

High-temperature epitaxial growth of tantalum nitride thin films on MgO: structural evolution and potential for SQUID applications

  • Michelle Cedillo Rosillo,
  • Oscar Contreras López,
  • Jesús Antonio Díaz,
  • Agustín Conde Gallardo and
  • Harvi A. Castillo Cuero

Beilstein J. Nanotechnol. 2025, 16, 690–699, doi:10.3762/bjnano.16.53

Graphical Abstract
  • the optimal combination of above parameters demonstrated the highest Tc of 6.3 K, signifying superior superconducting behavior. Analysis by XPS manifests the presence of stable oxygen impurities. The oxygen source is the residual gas inside the growth chamber. Quintanar-Zamora et al. provided evidence
  • nitrogen pressure between 10 and 90 mTorr. The experiment was performed in a laser ablation system “RIBER LDM 32”. It consists of three stainless steel ultrahigh-vacuum (UHV) chambers for sample introduction, PLD deposition, and X-ray photoelectron spectroscopy (XPS) analysis, isolated by UHV gate valves
  • deposition chamber, and a turbo pump was used to pump the gas out during film deposition. The films were transferred to the analysis chamber to characterize them in situ by XPS. Varying the N2 pressure, pN2, in the chamber and analyzing the films, we obtained TaN thin films at 90 mTorr of N2. XPS data were
PDF
Album
Full Research Paper
Published 22 May 2025

Colloidal few layered graphene–tannic acid preserves the biocompatibility of periodontal ligament cells

  • Teissir Ben Ammar,
  • Naji Kharouf,
  • Dominique Vautier,
  • Housseinou Ba,
  • Nivedita Sudheer,
  • Philippe Lavalle and
  • Vincent Ball

Beilstein J. Nanotechnol. 2025, 16, 664–677, doi:10.3762/bjnano.16.51

Graphical Abstract
  • to the FLG–TA colloid were analyzed using X-ray photoelectron spectroscopy (XPS), and the antioxidant properties of FLG–TA were evaluated using the DPPH free radical scavenging assay. XPS analysis (Figure 2 and Table S1, Supporting Information File 1) shows a significant increase in the O-to-C ratio
  • mW emission from a YAG laser source with an MPC600 PSU quantum laser to excite the samples. The XPS measurements were conducted in an ultrahigh vacuum setup (base pressure 5 × 10−9 mbar) comprising several interconnected chambers. The analysis chamber features a RESOLVE 120 MCD5 hemispherical
  • electron analyzer and a dual-anode source (Mg/Al). Samples were mounted on holders using conductive double-sided carbon adhesive tapes. XPS measurements utilized the monochromatic Al Kα line at 1486.6 eV. An initial survey scan identified elements present in each sample, followed by high-resolution scans
PDF
Album
Supp Info
Full Research Paper
Published 20 May 2025

Retrieval of B1 phase from high-pressure B2 phase for CdO nanoparticles by electronic excitations in CdxZn1−xO composite thin films

  • Arkaprava Das,
  • Marcin Zając and
  • Carla Bittencourt

Beilstein J. Nanotechnol. 2025, 16, 551–560, doi:10.3762/bjnano.16.43

Graphical Abstract
  • oxygen ion irradiation, while it entirely disappears with silver ion irradiation, confirming the amorphization of the Zn2SiO4 phase. Complementary observations from X-ray photoelectron spectroscopy (XPS), specifically O 1s and Si 2p peaks in XPS spectra, support these findings. Additionally, the track
  • irradiated thin films was performed with X-ray diffraction and Raman spectroscopy. Additionally, X-ray absorption near-edge structure (XANES) spectroscopy was conducted at the Zn L3,2 and O K edges for all the thin films. X-ray photoelectron spectroscopy (XPS) on Si 2p and O 1s core levels provided direct
  • spectrometer (Bruker), equipped with an Ar ion laser (532 nm) with 0.2 mW laser operating power. Scanning electron microscopy (SEM) analysis was carried out with a HITACHI SU8020 model, using an electron beam energy of 3.0 keV. X-ray photoelectron spectroscopy (XPS) was performed using an ESCA-5000 Versa Probe
PDF
Album
Full Research Paper
Published 17 Apr 2025

Quantification of lead through rod-shaped silver-doped zinc oxide nanoparticles using an electrochemical approach

  • Ravinder Lamba,
  • Gaurav Bhanjana,
  • Neeraj Dilbaghi,
  • Vivek Gupta and
  • Sandeep Kumar

Beilstein J. Nanotechnol. 2025, 16, 422–434, doi:10.3762/bjnano.16.33

Graphical Abstract
  • with XRD results of secondary phase formations [22][23][24]. X-ray photoelectron spectroscopy study of Ag@ZnO nanorods The physical state and chemical compositions of Ag@ZnO NRs were analyzed using X-ray photoelectron spectroscopy (XPS). Figure 7a represents the scan results of the binding energy. The
  • 90°. The elemental compositions were analyzed using EDS and XPS (Model PHI 5000 Versaprobe III). The chemical states were assessed using FTIR spectroscopy with a Perkin Elmer spectrometer model. The spectrum data was acquired between the frequency range of 450 to 4000 cm−1 (resolution of 0.5 cm−1
  • NRs and (b) M–H plot of Ag@ZnO NRs. (a) SEM images, (b) diameter distribution of nanorods, and (c) EDS of Ag@ZnO NRs. FTIR of Ag@ZnO NRs. (a) UV–vis spectrum and (b) bandgap of Ag@ZnO NRs. Zeta potential of Ag@ZnO NRs. Raman spectra of Ag@ZnO NRs. XPS of Ag@ZnO NRs: (a) full scan spectrum, (b) scan of
PDF
Album
Full Research Paper
Published 26 Mar 2025

Engineered PEG–PCL nanoparticles enable sensitive and selective detection of sodium dodecyl sulfate: a qualitative and quantitative analysis

  • Soni Prajapati and
  • Ranjana Singh

Beilstein J. Nanotechnol. 2025, 16, 385–396, doi:10.3762/bjnano.16.29

Graphical Abstract
  • physicochemical properties, such as size, shape, surface charge, and elemental composition using DLS, TEM, SEM, and XPS (Figure 2). The PEG–PCL NPs were characterized using a zetasizer (Nano ZS, Malvern, UK) to comprehensively assess their size, surface charge, monodispersity, and average hydrodynamic size
  • larger estimate than the dry measurements obtained from TEM and SEM [32]. X-ray photoelectron spectroscopy, also known as electron spectroscopy for chemical analysis (ESCA), was used to analyze the surface chemistry of the PEG–PCL NPs. XPS is a powerful surface-sensitive technique that provides detailed
  • information about the elemental composition, chemical states, and electronic states of the elements present in the nanoparticles. The XPS spectra of the PEG–PCL nanoparticles (Figure 2e) showed prominent peaks at binding energies of 284.8, 532.7, and 486.7 eV, corresponding to carbon, oxygen, and tin
PDF
Album
Full Research Paper
Published 20 Mar 2025

Pulsed laser in liquid grafting of gold nanoparticle–carbon support composites

  • Madeleine K. Wilsey,
  • Teona Taseska,
  • Qishen Lyu,
  • Connor P. Cox and
  • Astrid M. Müller

Beilstein J. Nanotechnol. 2025, 16, 349–361, doi:10.3762/bjnano.16.26

Graphical Abstract
  • scattering by the carbon fibers. The pulsed laser-grafted gold nanoparticles exhibited cauliflower morphology with approximately 200 nm diameter and no detectable carbonaceous shells (Figure 2B and cf. X-ray photoelectron spectroscopy (XPS) data below). Assembly of gold nanoparticles by nanosecond laser
  • pulses in liquids has been reported [43]. A generation of similar concave edges occurs in twinning. Twinned gold nanoparticles have been found to exhibit enhanced electrocatalytic activity in reductions because of an increased number of undercoordinated surface sites [44]. XPS data corroborate the
  • fit the data, including an asymmetric peak and a shake-up peak, in keeping with previously reported XPS data of graphitic carbon [45][46][47][48]. The asymmetric peak with a central binding energy range of 284.5 to 285.0 eV was assigned to graphitic carbon, in agreement with reported values [49][50
PDF
Album
Supp Info
Full Research Paper
Published 07 Mar 2025

Graphene oxide–chloroquine conjugate induces DNA damage in A549 lung cancer cells through autophagy modulation

  • Braham Dutt Arya,
  • Sandeep Mittal,
  • Prachi Joshi,
  • Alok Kumar Pandey,
  • Jaime E. Ramirez-Vick,
  • Govind Gupta and
  • Surinder P. Singh

Beilstein J. Nanotechnol. 2025, 16, 316–332, doi:10.3762/bjnano.16.24

Graphical Abstract
  • GO and GO–Chl nanoconjugate via UV–vis, FTIR, Raman Spectroscopy, FESEM, and HRTEM. Figure S2 shows the atomic force microscopy-based topographical analysis of GO nanosheets. Figure S3 represents the XPS survey spectra of GO, GO–Chl, and Chl. Table S1 shows the summary of fitting parameters for the
PDF
Album
Supp Info
Full Research Paper
Published 03 Mar 2025

Correction: AFM-IR investigation of thin PECVD SiOx films on a polypropylene substrate in the surface-sensitive mode

  • Hendrik Müller,
  • Hartmut Stadler,
  • Teresa de los Arcos,
  • Adrian Keller and
  • Guido Grundmeier

Beilstein J. Nanotechnol. 2025, 16, 252–253, doi:10.3762/bjnano.16.19

Graphical Abstract
  • /bjnano.16.19 Keywords: AFM-IR; polypropylene; surface-sensitive mode; silicon oxide; thin films; XPS; The authors regret that the acknowledgement in the publication is unfortunately not complete. The following sentence in the Funding section is missing: This work was supported by the German Research
PDF
Original
Article
Correction
Published 20 Feb 2025

A review of metal-organic frameworks and polymers in mixed matrix membranes for CO2 capture

  • Charlotte Skjold Qvist Christensen,
  • Nicholas Hansen,
  • Mahboubeh Motadayen,
  • Nina Lock,
  • Martin Lahn Henriksen and
  • Jonathan Quinson

Beilstein J. Nanotechnol. 2025, 16, 155–186, doi:10.3762/bjnano.16.14

Graphical Abstract
  • MOF-based MMM system that perturb the crystallinity in the membrane will be discernable through XRD [121][129]. Energy-dispersive X-ray spectroscopy (EDX), and X-ray photoelectron spectroscopy (XPS) are commonly used to supplement the chemical analysis of MOF-based MMMs [113][137][143]. EDX can
  • integration of MOFs in the polymeric membrane [113][137][143][146][147]. XPS is commonly used for obtaining spectra of the chemical composition of the outermost 10 nm of a surface. Specifically, XPS provides a spectral representation of binding energies on the surface, which can be referenced to specific
  • chemical states [148]. In MOF-based MMMs, XPS can help elucidate unique chemical coordination within the membrane [143]. Physical properties such as the surface area and pore size distribution are commonly determined through Brunauer–Emmett–Teller (BET) analysis [121][124][125][129][130][131], where the
PDF
Album
Supp Info
Review
Published 12 Feb 2025

Clays enhanced with niobium: potential in wastewater treatment and reuse as pigment with antibacterial activity

  • Silvia Jaerger,
  • Patricia Appelt,
  • Mario Antônio Alves da Cunha,
  • Fabián Ccahuana Ayma,
  • Ricardo Schneider,
  • Carla Bittencourt and
  • Fauze Jacó Anaissi

Beilstein J. Nanotechnol. 2025, 16, 141–154, doi:10.3762/bjnano.16.13

Graphical Abstract
  • mode. Powder and paint-applied samples were analyzed by colorimetry, based on the CIEL*a*b* system, using a portable colorimeter (NR60CP – 3NH). The oxidation state and elemental composition of the samples were evaluated using X-ray photoelectron spectroscopy (XPS) with a PHI Genesis instrument from
  • -BEOxP samples exhibit a set of bands in the region from 1477 to 1277 cm−1 typical for the identification of the MB dye, indicating the presence of the dye in the clay structure [18]. Figure 5 shows the XPS analysis of niobium in BEOx and BEPh samples (Figure 4a and Figure 4b, respectively). The Nb 3d
  • spectra exhibit two distinct peaks centered at 207.5 and 210.2 eV, corresponding to Nb 3d5/2 and Nb 3d3/2, respectively, indicative of niobium +5. The O 1s XPS spectra are shown in Figure 5c for BEOx and Figure 5d for BEPh. The spectra of samples BEOx and BEPh are reproduced with two components centered
PDF
Album
Supp Info
Full Research Paper
Published 10 Feb 2025

TiO2 immobilized on 2D mordenite: effect of hydrolysis conditions on structural, textural, and optical characteristics of the nanocomposites

  • Marina G. Shelyapina,
  • Rosario Isidro Yocupicio-Gaxiola,
  • Gleb A. Valkovsky and
  • Vitalii Petranovskii

Beilstein J. Nanotechnol. 2025, 16, 128–140, doi:10.3762/bjnano.16.12

Graphical Abstract
  • complementary characterization techniques, including XRD, SEM-EDX, TGA, N2 sorption, NMR, XPS and UV–vis spectrometry. It was observed that treatment in 70% ethanol solution preserves the ordered layered structure of 2D mordenite because TEOT hydrolysis is slowed down. This, in turn, leads to higher
  • and TEOT, studied in our previous work [5], for which even after hydrolysis for 12 h in water the long-range order of the lamellae was preserved. The results of the elemental analysis using energy dispersive X-ray (EDX) and X-ray photoelectron spectroscopy (XPS) of the parent lamellar sample and TiO2
  • -loaded samples are summarized in Table 1. Upon formation of TiO2 nanoparticles, a partial dealumination of mordenite occurs. However, the Al distribution over the sample depth is not homogenous. XPS shows that Al is accumulated on the sample surface. The hydrolysis medium does not significantly affect
PDF
Album
Full Research Paper
Published 10 Feb 2025

Electrochemical nanostructured CuBTC/FeBTC MOF composite sensor for enrofloxacin detection

  • Thi Kim Ngan Nguyen,
  • Tien Dat Doan,
  • Huy Hieu Luu,
  • Hoang Anh Nguyen,
  • Thi Thu Ha Vu,
  • Quang Hai Tran,
  • Ha Tran Nguyen,
  • Thanh Binh Dang,
  • Thi Hai Yen Pham and
  • Mai Ha Hoang

Beilstein J. Nanotechnol. 2024, 15, 1522–1535, doi:10.3762/bjnano.15.120

Graphical Abstract
  • , average pore diameter, and surface area of FeBTC are 1.46 cm3/g, 2.38 nm, and 1211 m2/g, respectively [37]. Surface area, total pore volume, and average pore diameter of CuBTC are 1134 m2/g, 0.49 cm3/g, and 1.74 nm, respectively [38]. The full-scan XPS spectrum of (Cu)(Fe)BTC (Figure 2a) shows the
  • existence of C (284 eV), O (532 eV), Fe (712 and 726 eV), and Cu (935 eV). The C 1s XPS spectrum of the (Cu)(Fe)BTC sample (Figure 2b) reveals four peaks attributed to C=C/C–C (284.78 eV), C–O (285.42 eV), C=O (286.11 eV), and O–C=O (288.62 eV) [39]. The high-resolution O 1s XPS spectrum (Figure 2c) can be
  • decomposed into oxygen in carboxyl groups (531.74 eV) and physically adsorbed –OH groups (533.30 eV) [40]. In the Fe 2p XPS spectra (Figure 2d), the binding energy peaks of Fe 2p3/2 correspond to Fe2+ and Fe3+ with peak positions at 711.42 and 713.35 eV, respectively. The Fe 2p1/2 peaks correspond to Fe2
PDF
Album
Full Research Paper
Published 28 Nov 2024

Ion-induced surface reactions and deposition from Pt(CO)2Cl2 and Pt(CO)2Br2

  • Mohammed K. Abdel-Rahman,
  • Patrick M. Eckhert,
  • Atul Chaudhary,
  • Johnathon M. Johnson,
  • Jo-Chi Yu,
  • Lisa McElwee-White and
  • D. Howard Fairbrother

Beilstein J. Nanotechnol. 2024, 15, 1427–1439, doi:10.3762/bjnano.15.115

Graphical Abstract
  • under steady-state conditions. X-ray photoelectron spectroscopy (XPS) and mass spectrometry data from monolayer thick films of Pt(CO)2Cl2 and Pt(CO)2Br2 exposed to 3 keV Ar+, He+, and H2+ ions indicate that deposition is initiated by the desorption of both CO ligands, a process ascribed to momentum
  • elementary reaction steps is invariant, although the rates of CO desorption and subsequent physical sputtering were greatest for the heaviest (Ar+) ions. The ability of IBID to produce pure Pt films was confirmed by AES and XPS analysis of thin film deposits created by Ar+/Pt(CO)2Cl2, demonstrating the
  • leads to a corresponding increase in the fractions of Pt and halogen in the films (Figure 5). For higher ion doses, XPS data (Figure 2) shows that both halogen and Pt atoms are removed from the film, but the rate of halogen removal is noticeably faster. Consequently, after a (scaled) ion dose of ca. 4
PDF
Album
Supp Info
Full Research Paper
Published 19 Nov 2024

A biomimetic approach towards a universal slippery liquid infused surface coating

  • Ryan A. Faase,
  • Madeleine H. Hummel,
  • AnneMarie V. Hasbrook,
  • Andrew P. Carpenter and
  • Joe E. Baio

Beilstein J. Nanotechnol. 2024, 15, 1376–1389, doi:10.3762/bjnano.15.111

Graphical Abstract
  • force microscopy (AFM), sum frequency generation spectroscopy (SFG), and X-ray photoelectron spectroscopy (XPS). Measuring static water contact angles is a straightforward method to determine the relative wettability of a material and allows for a quick check if our surface modifications were successful
  • , which has the ability to probe vibrational modes at an interface, thereby, providing insight into the order and confirmation of molecules at an interface [26][27]. XPS is a surface-sensitive technique to determine the atomic composition of the outer ca. 10 nm of a surface [28]. As mentioned above, SLIPS
  • composition of the layer was determined by XPS. Surface roughness was evaluated using AFM to confirm successful formation of a porous structure. Finally, ordering of specific chemical groups within our PDA SLIPS layer was explored via SFG spectroscopy. Initially, each functionalization step was assessed
PDF
Album
Supp Info
Full Research Paper
Published 08 Nov 2024
Other Beilstein-Institut Open Science Activities