Self-standing heterostructured NiC_x-NiFe-NC/biochar as a highly efficient cathode for lithium–oxygen batteries

• Shengyu Jing,
• Xu Gong,
• Shan Ji,
• Linhui Jia,
• Bruno G. Pollet,
• Sheng Yan and
• Huagen Liang

Beilstein J. Nanotechnol. 2020, 11, 1809–1821, doi:10.3762/bjnano.11.163

• were washed with ethanol and water alternatively and calcined at a certain temperature for 2 h with a heating ramp of 5 °C·min−1 in a tube furnace in nitrogen atmosphere. The calcined samples were labeled as NiFe-PBA/PP-T. Physical characterization X-ray diffraction (XRD) patterns were recorded using a

PEG/PEI-functionalized single-walled carbon nanotubes as delivery carriers for doxorubicin: synthesis, characterization, and in vitro evaluation

• Shuoye Yang,
• Zhenwei Wang,
• Yahong Ping,
• Yuying Miao,
• Yongmei Xiao,
• Lingbo Qu,
• Lu Zhang,
• Yuansen Hu and
• Jinshui Wang

Beilstein J. Nanotechnol. 2020, 11, 1728–1741, doi:10.3762/bjnano.11.155

• ). Fourier-transform infrared (FTIR) spectra in the range from 500 to 4000 cm−1 were recorded with a FTIR spectrometer (Nicolet IS10). X-ray diffraction (XRD) analysis was conducted using a BRUKER D8 X-ray diffractometer in the 2θ range of 0–100° at a scanning rate of 5°·min−1. For atomic force microscopy

Cardiomyocyte uptake mechanism of a hydroxyapatite nanoparticle mediated gene delivery system

• Hiroaki Komuro,
• Masahiro Yamazoe,
• Kosuke Nozaki,
• Akiko Nagai and
• Tetsuo Sasano

Beilstein J. Nanotechnol. 2020, 11, 1685–1692, doi:10.3762/bjnano.11.150

• HAp nanoparticles were prepared using the water-in-oil (W/O) emulsion method. The characterization of the prepared HAp nanoparticles was carried out using transmission electron microscopy (TEM), X-ray diffraction (XRD), and Fourier-transform infrared spectroscopy (FTIR). TEM provided insight into the

Oxidation of Au/Ag films by oxygen plasma: phase separation and generation of nanoporosity

• Abdel-Aziz El Mel,
• Said A. Mansour,
• Mujaheed Pasha,
• Atef Zekri,
• Janarthanan Ponraj,
• Akshath Shetty and
• Yousef Haik

Beilstein J. Nanotechnol. 2020, 11, 1608–1614, doi:10.3762/bjnano.11.143

• formation of unique features, consisting of silver oxide nanoporous microspheres (Figure 1). Our observation was supported by various characterization techniques, including scanning electron microscopy (SEM), transmission electron microscopy (TEM) and X-ray diffraction spectroscopy (XRD). We conducted our

• voltage of 5 kV and at a working distance of ≈6 mm. For EDS, a Bruker Quantax 800 detector (Billerica, MA, USA) was used at a fixed 10 kV acceleration voltage. X-ray diffraction patterns were recorded in Bragg–Brentano geometry using a Rigaku SmarLab diffractometer (Tokyo, Japan). The voltage and the

High-responsivity hybrid α-Ag₂S/Si photodetector prepared by pulsed laser ablation in liquid

• Raid A. Ismail,
• Hanan A. Rawdhan and
• Duha S. Ahmed

Beilstein J. Nanotechnol. 2020, 11, 1596–1607, doi:10.3762/bjnano.11.142

• ) mixed with cationic cetyltrimethylammonium bromide (CTAB) as surfactant. The effect of the CTAB surfactant on the structural, morphological, optical, and elemental composition of Ag2S NPs was evaluated using X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy

Detecting stable adsorbates of (1S)-camphor on Cu(111) with Bayesian optimization

• Jari Järvi,
• Patrick Rinke and
• Milica Todorović

Beilstein J. Nanotechnol. 2020, 11, 1577–1589, doi:10.3762/bjnano.11.140

• electronic properties of the material. Assemblies of organic molecules on surfaces have been studied experimentally, for example with X-ray diffraction [4][5], scanning tunneling microscopy [6][7][8] and atomic force microscopy (AFM) [9][10][11]. These methods have a considerable resolution in imaging planar

Cu₂O nanoparticles for the degradation of methyl parathion

• Juan Rizo,
• David Díaz,
• Benito Reyes-Trejo and
• M. Josefina Arellano-Jiménez

Beilstein J. Nanotechnol. 2020, 11, 1546–1555, doi:10.3762/bjnano.11.137

• different NPs sizes (16, 29 and 45 nm), determined with X-ray diffraction (XRD) and high-resolution transmission electron microscopy (HRTEM), were synthesized using a modified Benedict’s reagent. 1H nuclear magnetic resonance (NMR) results show that the hydrolytic degradation of MP leads to the formation of

• with a double-way optic fiber coupled to a PC. The powder X-ray diffraction (XRD) patterns were collected with a Bruker D2 Phaser diffractometer equipped with a conventional X-ray tube (Cu Kα radiation, 30 kV, 10 mA) and the LYNXEYE one-dimensional detector. A primary divergence slit module width of 1

• and a HSA of 50 eV pass energy. Results and Discussion Characterization of Cu2O NPs with powder XRD and HRTEM The structural and morphological characterization of Cu2O NPs was carried out using powder X-ray diffraction and high-resolution transmission electron microscopy. Copper(I) oxide is

Adsorption and self-assembly of porphyrins on ultrathin CoO films on Ir(100)

• Feifei Xiang,
• Tobias Schmitt,
• Marco Raschmann and
• M. Alexander Schneider

Beilstein J. Nanotechnol. 2020, 11, 1516–1524, doi:10.3762/bjnano.11.134

• we imply that the surface is oxygen-terminated and shows a wurtzite-type of surface termination [19]. This has been confirmed by surface X-ray diffraction analysis of the 2BL film [21]. Although the 2BL film is structurally close to a c(10 × 2) surface structure it may be considered as a flat, quasi

One-step synthesis of carbon-supported electrocatalysts

• Sebastian Tigges,
• Nicolas Wöhrl,
• Ivan Radev,
• Ulrich Hagemann,
• Markus Heidelmann,
• Thai Binh Nguyen,
• Stanislav Gorelkov,
• Stephan Schulz and
• Axel Lorke

Beilstein J. Nanotechnol. 2020, 11, 1419–1431, doi:10.3762/bjnano.11.126

• the commercial catalyst. Note, however, that this difference most likely results from the much lower mean particle diameter of 2.76 nm (measured by TEM, see Supporting Information File 1, Figure S5) compared to 4.5 nm (measured by X-ray diffraction) of the commercial catalyst [33]. Corresponding PSDs

Structure and electrochemical performance of electrospun-ordered porous carbon/graphene composite nanofibers

• Yi Wang,
• Yanhua Song,
• Chengwei Ye and
• Lan Xu

Beilstein J. Nanotechnol. 2020, 11, 1280–1290, doi:10.3762/bjnano.11.112

• (National Institute of Mental Health, USA). The Brunauer–Emmett–Teller (BET) specific surface area and porosity of the CCGNFs were determined by using a surface area analyzer (Micromeritics, ASAP 2020, USA) at 77 K, taking into consideration the N2 adsorption and desorption isotherms. X-ray diffraction (XRD

Proximity effect in [Nb(1.5 nm)/Fe(x)]₁₀/Nb(50 nm) superconductor/ferromagnet heterostructures

• Yury Khaydukov,
• Sabine Pütter,
• Laura Guasco,
• Roman Morari,
• Gideok Kim,
• Thomas Keller,
• Anatolie Sidorenko and
• Bernhard Keimer

Beilstein J. Nanotechnol. 2020, 11, 1254–1263, doi:10.3762/bjnano.11.109

• energy was directed along the azimuth of the sapphire substrate. In order to check the crystal structure and the quality of the epitaxial growth, X-ray diffraction measurements were performed using a θ–2θ diffractometer. The diffractometer operates at the wavelength of λ = 1.54 Å and is equipped with a

• polycrystalline (Figure 2b). X-ray diffraction Figure 3a shows the diffraction pattern measured on sample s3. Together with two reflections from the substrate we observed a Nb(200) peak at 2θ = 55°with mosaicity of the same order as the substrate peak. In agreement with the observation by RHEED (Figure 4b) we

• . Black arrows show the direction of the neutron beam. RHEED patterns of (a) the Al2O3() substrate, (b) the Pt cap layer, and the Nb buffer layer grown at (c) 800 °C and (d) 30 °C. (e, f) Growth stages of sample s6: (e) the 6th Fe layer, (f) the 6th Nb layer. X-ray diffraction patterns of (a) sample s3

Gas sorption porosimetry for the evaluation of hard carbons as anodes for Li- and Na-ion batteries

• Yuko Matsukawa,
• Fabian Linsenmann,
• Maximilian A. Plass,
• George Hasegawa,
• Katsuro Hayashi and
• Tim-Patrick Fellinger

Beilstein J. Nanotechnol. 2020, 11, 1217–1229, doi:10.3762/bjnano.11.106

• carbonization (HT carbons), and two samples were obtained from carbonized resorcinol–formaldehyde resins (RF carbons). The electrochemical sodium storage characteristics of the RF carbons were previously reported [28][29]. Characterization of hard carbons The X-ray diffraction (XRD) patterns consistently point

• carbonized at 1000 or 1600 °C for 2 h in a stream of argon gas (1 L min−1). The carbon samples derived from RF gels (RF carbons) were labeled with the carbonization temperature, namely RF-1000 and RF-1600. Characterization Powder X-ray diffraction (XRD) measurements and Raman spectroscopy were employed to

High permittivity, breakdown strength, and energy storage density of polythiophene-encapsulated BaTiO₃ nanoparticles

• Adnanullah Khan,
• Amir Habib and
• Adeel Afzal

Beilstein J. Nanotechnol. 2020, 11, 1190–1197, doi:10.3762/bjnano.11.103

• mixture. All materials including BTO, BTO-PTh, and PTh are characterized using Fourier-transform infrared spectroscopy (Nicolet 520 FTIR spectrophotometer) and X-ray diffraction (STOE STADI P X-ray diffractometer). The morphology of BTO and BTO-PTh nanoparticles is studied using scanning electron

• , respectively, which is attributed to the interactions between β-hydrogens of PTh and oxygen atoms on the BTO surface. X-ray diffraction patterns of BTO, PTh, and core–shell BTO-PTh nanoparticles are presented in Figure 3. Pristine PTh is amorphous in nature and shows a low-intensity broad peak at around 23

Gram-scale synthesis of splat-shaped Ag–TiO₂ nanocomposites for enhanced antimicrobial properties

• Mohammad Jaber,
• Asim Mushtaq,
• Kebiao Zhang,
• Jindan Wu,
• Dandan Luo,
• Zihan Yi,
• M. Zubair Iqbal and
• Xiangdong Kong

Beilstein J. Nanotechnol. 2020, 11, 1119–1125, doi:10.3762/bjnano.11.96

• with ethanol and centrifuged for further use. Pure TiO2 NPs were also prepared by using the above method without the addition of Ag as a precursor. Sample characterizations The crystal structure of the samples was investigated through X-ray diffraction (XRD, ARL X'TRA, Thermo Techno, USA) using a

• nanocomposites may also have potential to be used in wound healing, photocatalytic and toxic dye removal applications. X-ray diffraction (XRD) patterns of pure TiO2 NPs and Ag–TiO2 nanocomposites at different ratios. SEM and EDS images of the synthesized splat-shaped nanoparticles: (a) pure TiO2 NPs, (b, c) Ag

Plant growth regulation by seed coating with films of alginate and auxin-intercalated layered double hydroxides

• Vander A. de Castro,
• Valber G. O. Duarte,
• Danúbia A. C. Nobre,
• Geraldo H. Silva,
• Vera R. L. Constantino,
• Frederico G. Pinto,
• Willian R. Macedo and
• Jairo Tronto

Beilstein J. Nanotechnol. 2020, 11, 1082–1091, doi:10.3762/bjnano.11.93

• analytical techniques, including powder X-ray diffraction, thermogravimetric analysis coupled to differential scanning calorimetry and mass spectrometry, specific surface area measurement, and scanning electron microscopy. Bioassays were performed with the seeds coated with the composite film to assess the

• seeds to evaluate germination rate and germination speed index (GSI), and biometric analyses with the values of root area, root fresh matter, and shoot length of the plants. Results and Discussion Characterization of ZnAl-NAA-LDH The powder X-ray diffraction (XRD) patterns of neat NAA and ZnAl-NAA-LDH

• software by image) [33]. Root fresh matter determination was performed with the aid of a high-precision analytical scale (Shimadzu AUY 220). The length of the shoot of the plants was measured directly with a high-grade ruler (1:1.000). Characterizations techniques Powder X-ray diffraction patterns (XRD

Excitonic and electronic transitions in Me–Sb₂Se₃ structures

• Nicolae N. Syrbu,
• Victor V. Zalamai,
• Ivan G. Stamov and
• Stepan I. Beril

Beilstein J. Nanotechnol. 2020, 11, 1045–1053, doi:10.3762/bjnano.11.89

• μm) could also be obtained from the crystal with the aid of adhesive tape. X-ray diffraction was performed in order to verify the quality of the crystalline sheets and their spatial crystalline groups. Optical transmission and reflection spectra were obtained on a double-grating spectrometer SDL-1

• a 1:2 aperture and 7 Å/mm linear dispersion. Results and Discussion The quality and composition of the single crystals were verified by optical and X-ray diffraction (XRD) analysis. The position of the atoms relative to the crystal lattice axes and the crystal XRD pattern is shown in Figure 1. A

Microwave-induced electric discharges on metal particles for the synthesis of inorganic nanomaterials under solvent-free conditions

• Vijay Tripathi,
• Harit Kumar,
• Anubhav Agarwal and
• Leela S. Panchakarla

Beilstein J. Nanotechnol. 2020, 11, 1019–1025, doi:10.3762/bjnano.11.86

• treatment is essential before using metal particles in further microwave arc experiments. All metal powders were treated with 0.5 M nitric acid under sonication for 10 min to create rough surfaces. In this process, copper partially gets oxidized to Cu2O. The X-ray diffraction (XRD) patterns show reflections

• copper. Graphitic carbon nitride (g-C3N4) or graphite powder (commercially available) are used as carbon source. g-C3N4 is synthesized and characterized according to [18]. X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) confirms the formation of g-C3N4 (Figure S1 in Supporting

• supernatant solution is collected for further characterization. Characterization of products The reaction products are characterized by X-ray diffraction (PANanalytical X’pert PRO), field-emission scanning electron microscopy (JEOL JSM 7600F, combined with energy-dispersive spectroscopy (EDS)), transmission

Gas-sensing features of nanostructured tellurium thin films

• Dumitru Tsiulyanu

Beilstein J. Nanotechnol. 2020, 11, 1010–1018, doi:10.3762/bjnano.11.85

• different operating temperatures with respect to scanning electron microscopy and X-ray diffraction analyses. It was shown that both types of films interacted with nitrogen dioxide, which resulted in a decrease of electrical conductivity. The gas sensitivity, as well as the response and recovery times

• one another. No Te crystallites were observed in this case. The structural phase state of the grown films was adequately confirmed by X-ray diffraction (XRD). Figure 2 shows the XRD patterns of Te films grown on either Pyrex glass (Figure 2A) or nanostructured Al2O3 substrates (Figure 2B). According

Uniform Fe₃O₄/Gd₂O₃-DHCA nanocubes for dual-mode magnetic resonance imaging

• Miao Qin,
• Yueyou Peng,
• Mengjie Xu,
• Hui Yan,
• Yizhu Cheng,
• Xiumei Zhang,
• Di Huang,
• Weiyi Chen and
• Yanfeng Meng

Beilstein J. Nanotechnol. 2020, 11, 1000–1009, doi:10.3762/bjnano.11.84

• analyze the distribution of the elements within the samples. The samples were ultrasonically homogenized for 30 minutes and an 8 μL aliquot was collected in a copper mesh and kept at 55 °C for 2 h. After drying, the samples were placed in the HRTEM for imaging. X-ray diffraction (XRD, UltimalV, Japan; Cu

Electrochemical nanostructuring of (111) oriented GaAs crystals: from porous structures to nanowires

• Elena I. Monaico,
• Eduard V. Monaico,
• Veaceslav V. Ursaki,
• Shashank Honnali,
• Vitalie Postolache,
• Karin Leistner,
• Kornelius Nielsch and
• Ion M. Tiginyanu

Beilstein J. Nanotechnol. 2020, 11, 966–975, doi:10.3762/bjnano.11.81

• mounted on the cold station of a LTS-22-C-330 cryogenic system. X-ray diffraction analysis of the samples was performed with a Philips X-Pert MPD System with Cu Kα1 radiation. Electrical contacts to GaAs nanowires. The contacts were realized using laser leam lithography (µPG 101, Heidelberg Instruments

Atomic layer deposition for efficient oxygen evolution reaction at Pt/Ir catalyst layers

• Stefanie Schlicht,
• Korcan Percin,
• Stefanie Kriescher,
• André Hofer,
• Claudia Weidlich,
• Matthias Wessling and
• Julien Bachmann

Beilstein J. Nanotechnol. 2020, 11, 952–959, doi:10.3762/bjnano.11.79

• particular, we have determined particle sizes by transmission electron microscopy (TEM), investigated the homogeneously mixed nature of the Pt/Ir catalyst by X-ray diffraction (XRD), selected-area electron diffraction (SAED), and X-ray photoelectron spectroscopy (XPS). We have also examined various ALD

• nature of the surfaces have also been demonstrated in recent publications by X-ray diffraction, selected-area electron diffraction and transmission electron microscopy [22][23]. Herein, we investigate two different catalyst loadings: (1) IrALD25PtALD10, i.e., 25 ALD cycles Ir followed by 10 ALD cycles Pt

Band tail state related photoluminescence and photoresponse of ZnMgO solid solution nanostructured films

• Vadim Morari,
• Aida Pantazi,
• Nicolai Curmei,
• Vitalie Postolache,
• Emil V. Rusu,
• Marius Enachescu,
• Ion M. Tiginyanu and
• Veaceslav V. Ursaki

Beilstein J. Nanotechnol. 2020, 11, 899–910, doi:10.3762/bjnano.11.75

• unavoidable in the structure transformation process, in a certain interval of Mg concentrations. The phase segregation process was investigated in detail by means of X-ray diffraction, element-specific near-edge X-ray absorption fine structure (NEXAFS), electron dispersive spectroscopy (EDS), atomic force

• nanoparticles embedded into the ZnMgO matrix are useful for fast electron transport and high charge balance in quantum dot light emitting diodes [22]. The multiphase composition of films prepared by spin coating and annealed at temperatures lower that 450 °C was revealed by X-ray diffraction (XRD) analysis. As

Templating effect of single-layer graphene supported by an insulating substrate on the molecular orientation of lead phthalocyanine

• K. Priya Madhuri,
• Abhay A. Sagade,
• Pralay K. Santra and
• Neena S. John

Beilstein J. Nanotechnol. 2020, 11, 814–820, doi:10.3762/bjnano.11.66

• Technology, Kattankulathur 603 203, Tamil Nadu, India 10.3762/bjnano.11.66 Abstract The influence of single-layer graphene on top of a SiO2/Si surface on the orientation of nonplanar lead phthalocyanine (PbPc) molecules is studied using two-dimensional grazing incidence X-ray diffraction. The studies

• specific device applications. Keywords: conducting atomic force microscopy (C-AFM); lead phthalocyanine (PbPc); molecular orientation; single-layer graphene; substrate effect; two-dimensional grazing incidence X-ray diffraction (2D-GIXRD); Introduction Organic semiconductors have been extensively used in

• substrate, using synchrotron two-dimensional grazing incidence X-ray diffraction (2D-GIXRD). We show that although graphene induces the face-on stacking of monoclinic domains, the underlying SiO2 substrate can still cause edge-on triclinic orientations as well. We also present the electrical current mapping

Epitaxial growth and superconducting properties of thin-film PdFe/VN and VN/PdFe bilayers on MgO(001) substrates

• Wael M. Mohammed,
• Igor V. Yanilkin,
• Amir I. Gumarov,
• Airat G. Kiiamov,
• Roman V. Yusupov and
• Lenar R. Tagirov

Beilstein J. Nanotechnol. 2020, 11, 807–813, doi:10.3762/bjnano.11.65

• composition were controlled by X-ray photoelectron spectroscopy. In situ low-energy electron diffraction and ex situ X-ray diffraction show that the 30 nm thick single-layer VN as well as the double-layer VN(30 nm)/Pd0.92Fe0.08(12 nm) and Pd0.96Fe0.04(20 nm)/VN(30 nm) structures have grown cube-on-cube

• , VN and Pd: aMgO = 421.2 pm, aVN = 413.7 pm [35] and aPd = 389.1 pm. Thus, the lattice mismatch between MgO and VN is only about 1.7%, and between Pd and VN it is as small as 5.95%. The in situ LEED analysis was corroborated with ex situ X-ray diffraction (XRD, BRUKER D8, Germany) measurements using

Nickel nanoparticles supported on a covalent triazine framework as electrocatalyst for oxygen evolution reaction and oxygen reduction reactions

• Secil Öztürk,
• Yu-Xuan Xiao,
• Dennis Dietrich,
• Beatriz Giesen,
• Juri Barthel,
• Jie Ying,
• Xiao-Yu Yang and
• Christoph Janiak

Beilstein J. Nanotechnol. 2020, 11, 770–781, doi:10.3762/bjnano.11.62

• Information File 1). As expected, both CTF-1-400 and CTF-1-600 (as-synthesized) showed limited long-range order according to powder X-ray diffraction (PXRD) measurements (Figure S1, Supporting Information File 1) [32][42]. Nitrogen sorption measurements for CTF-1-400 showed a type-I isotherm with 954 m2/g

• bis(trifluoromethylsulfonyl)imide ([BMIm][NTf2]) was synthesized in two steps following a literature procedure [67]. The anion purity of IL by ion chromatography was found to be above 99% and the water content of the IL by Karl-Fischer titration was less than 10 ppm. Methods Powder X-ray diffraction