Solar-light-driven LaFe_xNi_1−xO₃ perovskite oxides for photocatalytic Fenton-like reaction to degrade organic pollutants

• Chao-Wei Huang,
• Shu-Yu Hsu,
• Jun-Han Lin,
• Yun Jhou,
• Wei-Yu Chen,
• Kun-Yi Andrew Lin,
• Yu-Tang Lin and
• Van-Huy Nguyen

Beilstein J. Nanotechnol. 2022, 13, 882–895, doi:10.3762/bjnano.13.79

• based on the model of hexagonal LaNiO3. As a result, the lattice constant and cell volume were slightly expanded. It was interesting to note that LaFe0.7Ni0.3O3 revealed a relatively larger expansion, which had a higher cell volume, suggesting a better separation of photo-induced electron and hole pairs

• sol–gel solution could help the separation of LaFexNi1−xO3 crystals, leading to less particle aggregation. Moreover, the elemental analysis of the samples was also carried out using energy dispersive spectroscopic (EDS). The Fe contents of the samples with different Fe/Ni atomic ratios were identified

• . LaFe0.7Ni0.3O3 had a larger crystal diameter and higher specific surface, which improved the separation of photogenerated charge carriers and the efficiency of the surface reaction. For comparison, the second-order kinetics analysis was also conducted for the samples prepared at pH 0 in Table 1. However, the R2

DNA aptamer selection and construction of an aptasensor based on graphene FETs for Zika virus NS1 protein detection

• Nathalie B. F. Almeida,
• Thiago A. S. L. Sousa,
• Viviane C. F. Santos,
• Camila M. S. Lacerda,
• Thais G. Silva,
• Rafaella F. Q. Grenfell,
• Flavio Plentz and
• Antero S. R. Andrade

Beilstein J. Nanotechnol. 2022, 13, 873–881, doi:10.3762/bjnano.13.78

• . The next step involves the separation of non-bound sequences from sequences that bound to the target for further real-time polymerase chain reaction (PCR) amplification. The enriched pool of aptamers is exposed to the target again. Selection, separation, and amplification steps comprise one SELEX

• the target [17]. The CE separation efficiency allows for high-affinity aptamers to be obtained with only three to five rounds. Our present study demonstrates, for the first time, the application of CE-SELEX to obtain DNA aptamers for the ZIKV NS1 protein. In particular, the ZIKV60 aptamer (patent

• incubated with 80 pmol of the ZIKV NS1 protein in borate buffer (60 mM) for 30 min, 200 rpm, at 37 °C. An incubation solution sample was submitted to separation by CE using a neutral capillary on a P/ACE MDQ capillary electrophoresis system (Beckman Coulter Inc., Fullerton, CA). The capillary was first

Numerical modeling of a multi-frequency receiving system based on an array of dipole antennas for LSPE-SWIPE

• Alexander V. Chiginev,
• Anton V. Blagodatkin,
• Dmitrii A. Pimanov,
• Ekaterina A. Matrozova,
• Anna V. Gordeeva,
• Andrey L. Pankratov and
• Leonid S. Kuzmin

Beilstein J. Nanotechnol. 2022, 13, 865–872, doi:10.3762/bjnano.13.77

• double-frequency system with slot antennas and CEBs for 75 and 105 GHz frequencies for the Cosmic Origins Explorer (COrE) mission has been investigated and a band separation was demonstrated [10]. Now this approach is getting further improvements with arrays of dipole antennas and a voltage-biased mode

• a bow-tie dipole antenna was calculated (Figure 5) with the DC bias lines connected to the central parts of the antennas. The frequency response of the receiving matrix with bow-tie antennas is shown in Figure 6. Rather good band separation is visible in spite of a certain cross-talk of the 210 GHz

Self-assembly of C₆₀ on a ZnTPP/Fe(001)–p(1 × 1)O substrate: observation of a quasi-freestanding C₆₀ monolayer

• Guglielmo Albani,
• Michele Capra,
• Alessandro Lodesani,
• Alberto Calloni,
• Gianlorenzo Bussetti,
• Marco Finazzi,
• Franco Ciccacci,
• Alberto Brambilla,
• Lamberto Duò and
• Andrea Picone

Beilstein J. Nanotechnol. 2022, 13, 857–864, doi:10.3762/bjnano.13.76

• “Ph2”) and from C60 (“a”–“e”) are labeled and their evolution is indicated with dotted lines. Scanning tunneling spectrum acquired at constant tip–surface separation (open feedback loop) on the C60/ZnTPP/Fe(001)–p(1 × 1)O system (black) and on the ZnTPP/Fe(001)–p(1 × 1)O surface (red). The black curves

Gelatin nanoparticles with tunable mechanical properties: effect of crosslinking time and loading

• Agnes-Valencia Weiss,
• Daniel Schorr,
• Julia K. Metz,
• Metin Yildirim,
• Saeed Ahmad Khan and
• Marc Schneider

Beilstein J. Nanotechnol. 2022, 13, 778–787, doi:10.3762/bjnano.13.68

• determined. The curve obtained during the AFM experiment is based on the piezo movement. The piezo movement is larger than the indentation into the nanoparticle as the cantilever bends to the opposite direction. This effect is corrected by the so-called tip–sample separation, leading to the actual

Hierarchical Bi₂WO₆/TiO₂-nanotube composites derived from natural cellulose for visible-light photocatalytic treatment of pollutants

• Zehao Lin,
• Zhan Yang and
• Jianguo Huang

Beilstein J. Nanotechnol. 2022, 13, 745–762, doi:10.3762/bjnano.13.66

• visible light together with an accelerated separation and transfer of the photogenerated electron–hole pairs of the nanocomposites, which resulted in increased effective amounts of photogenerated carriers for the photocatalytic reactions. It was demonstrated that the photoinduced electrons dominated the

• activities than those of pure TiO2 and Bi2WO6. This is ascribed to the heterostructures built in between the two phases, leading to accelerated separation and transfer of photogenerated electrons and holes. Nevertheless, the effective formation of heterostructures in between the TiO2 and Bi2WO6 phases are

• the TiO2 and Bi2WO6 phases of the Bi2WO6/TiO2-NT nanocomposites, leading to higher separation and transfer efficiencies of the photoinduced electron−hole pairs. The optimal 70%−Bi2WO6/TiO2-NT photocatalyst achieves a removal percentage of 96.9% toward the reduction of Cr(VI) upon visible light

Reliable fabrication of transparent conducting films by cascade centrifugation and Langmuir–Blodgett deposition of electrochemically exfoliated graphene

• Teodora Vićentić,
• Stevan Andrić,
• Vladimir Rajić and
• Marko Spasenović

Beilstein J. Nanotechnol. 2022, 13, 666–674, doi:10.3762/bjnano.13.58

• cascade centrifugation can be used as a common method for the separation of graphene particles by size, in the case of ultrasound-assisted liquid-phase exfoliated graphene. In this paper, we demonstrated that cascade centrifugation of electrochemically exfoliated graphene can be used in conjunction with

A new method for obtaining the magnetic shape anisotropy directly from electron tomography images

• Cristian Radu,
• Ioana D. Vlaicu and
• Andrei C. Kuncser

Beilstein J. Nanotechnol. 2022, 13, 590–598, doi:10.3762/bjnano.13.51

• , ImageJ, IMOD, tomo3d, or Genfire). The proposed program was designed to work directly with electron tomograms reconstructed using Genfire [22]. Although Magn3t is technically capable to provide correct information regarding particle size distribution (with particle separation capabilities) for any 3D

• volume, the full power of the program is revealed for magnetic nanoparticulate systems. The results provided by Magn3t starting from a reconstructed data volume are obtained performing the following tasks: (i) data volume thresholding, (ii) particle separation and identification, (iii) shape evaluation

• greatly on the user experience and can be involved with success in the approach of more challenging situations. Particle separation and identification: A modified version of the priority-flood algorithm [24] has been used in order to distinguish particles that are in contact with each other. As a first

Effects of substrate stiffness on the viscoelasticity and migration of prostate cancer cells examined by atomic force microscopy

• Xiaoqiong Tang,
• Yan Zhang,
• Jiangbing Mao,
• Yuhua Wang,
• Zhenghong Zhang,
• Zhengchao Wang and
• Hongqin Yang

Beilstein J. Nanotechnol. 2022, 13, 560–569, doi:10.3762/bjnano.13.47

• deformation [38][39]) the energy dissipation was mainly caused by cell adhesion, which was a certain separation between the approach and retraction curves (Figure 5c). The results showed a negative correlation between viscosity values and substrate stiffness in PC-3 cells: the higher the substrate stiffness

Stimuli-responsive polypeptide nanogels for trypsin inhibition

• Petr Šálek,
• Jana Dvořáková,
• Sviatoslav Hladysh,
• Diana Oleshchuk,
• Ewa Pavlova,
• Jan Kučka and
• Vladimír Proks

Beilstein J. Nanotechnol. 2022, 13, 538–548, doi:10.3762/bjnano.13.45

• IODO-BEADS (pre-washed with PBS buffer, pH 7.4). After the separation of the IODO-BEADS, a solution of ascorbic acid (10 µL, 25 mg/mL in PBS buffer, pH 7.4) was added to the 125I-radiolabeled BSA, or 125I-radiolabeled AAT, and incubated for 30 min. Finally, the 125I-radiolabeled BSA, or 125I

Influence of thickness and morphology of MoS₂ on the performance of counter electrodes in dye-sensitized solar cells

• Lam Thuy Thi Mai,
• Hai Viet Le,
• Ngan Kim Thi Nguyen,
• Van La Tran Pham,
• Thu Anh Thi Nguyen,
• Nguyen Thanh Le Huynh and
• Hoang Thai Nguyen

Beilstein J. Nanotechnol. 2022, 13, 528–537, doi:10.3762/bjnano.13.44

• /cathode peak potentials (EpOx1, EpRed1), peak-to-peak voltage separation (Epp), and anode/cathode peak current densities (JOx1, JRed1) were calculated and presented in Table 1. The Epp value for MoS2 CEs was slightly larger than that of Pt CE confirming their excellent electrocatalytic activity. The JRed1

Ciprofloxacin-loaded dissolving polymeric microneedles as a potential therapeutic for the treatment of S. aureus skin infections

• Sharif Abdelghany,
• Walhan Alshaer,
• Yazan Al Thaher,
• Maram Al Fawares,
• Amal G. Al-Bakri,
• Saja Zuriekat and
• Randa SH. Mansour

Beilstein J. Nanotechnol. 2022, 13, 517–527, doi:10.3762/bjnano.13.43

• column compartment. Data acquisition was performed via the LabSolutions LCGC software. The eluent was detected at 278 nm. Separation was carried out using a reversed-phase Interclone C18 column (250 mm × 4.6 mm, 5 μm particle ODS 100 Å size) (Phenomenex, California, USA) at 30 °C. The mobile phase had an

Zinc oxide nanostructures for fluorescence and Raman signal enhancement: a review

• Ioana Marica,
• Fran Nekvapil,
• Maria Ștefan,
• Cosmin Farcău and
• Alexandra Falamaș

Beilstein J. Nanotechnol. 2022, 13, 472–490, doi:10.3762/bjnano.13.40

• a higher adsorption of analyte molecules, increasing the EF from 106 (before) to 108 (after hydrogenation) [43]. The charge transfer effect was probably increased as well since the hydrogenation introduced lattice defects that could alter the energy band structure of ZnO, promoting charge separation

• well as the energy of the incident light [36]. Moreover, the substrates could be used after several recycling cycles and presented similar EFs as the fresh ones. Other methods for recycling the ZnO-based nanosubstrates include thermal treatment and magnetic separation. These benefits indicate that the

Investigation of electron-induced cross-linking of self-assembled monolayers by scanning tunneling microscopy

• Patrick Stohmann,
• Sascha Koch,
• Yang Yang,
• Christopher David Kaiser,
• Julian Ehrens,
• Jürgen Schnack,
• Niklas Biere,
• Dario Anselmetti,
• Armin Gölzhäuser and
• Xianghui Zhang

Beilstein J. Nanotechnol. 2022, 13, 462–471, doi:10.3762/bjnano.13.39

• Abstract Ultrathin membranes with subnanometer pores enabling molecular size-selective separation were generated on surfaces via electron-induced cross-linking of self-assembled monolayers (SAMs). The evolution of p-terphenylthiol (TPT) SAMs on Au(111) surfaces into cross-linked monolayers was observed

• separation [36][37][38][39][40][41][42]. The interactions between aromatic SAMs and electrons have been studied by X-ray photoelectron spectroscopy (XPS), near-edge X-ray-absorption fine-structure (NEXAFS) technique [43][44][45][46][47][48][49], infrared spectroscopy [43][50][51][52], high-resolution

• order and lower density, which enables the use of CNMs as a molecular sieve in mass transfer and separation processes. Experimental Preparation of self-assembled monolayers from solution Precursor molecules (p-terphenylthiol) used in this study were purchased from Sigma-Aldrich. In a manner similar to

A chemiresistive sensor array based on polyaniline nanocomposites and machine learning classification

• Jiri Kroutil,
• Alexandr Laposa,
• Ali Ahmad,
• Jan Voves,
• Vojtech Povolny,
• Ladislav Klimsa,
• Marina Davydova and
• Miroslav Husak

Beilstein J. Nanotechnol. 2022, 13, 411–423, doi:10.3762/bjnano.13.34

• provides a linear projection of the data with (c – 1) dimensions, by considering the scatter of data within each class and across classes. Projection directions are those that maximize the inter-class separation of the projected data. The LDA transformation matrix is given by where SW and ΛW are

Effect of sample treatment on the elastic modulus of locust cuticle obtained by nanoindentation

• Chuchu Li,
• Stanislav N. Gorb and
• Hamed Rajabi

Beilstein J. Nanotechnol. 2022, 13, 404–410, doi:10.3762/bjnano.13.33

• medium. Mechanical testing Pieces of about 2.0 × 0.5 × 0.5 mm3 size were separated from the middle part of the hind tibiae using a razor blade. They were then glued (5925 Ergo, Kisling AG, Wetzikon, Switzerland) on a sample holder within 2 min after separation from the tibiae. To avoid desiccation

Micro- and nanotechnology in biomedical engineering for cartilage tissue regeneration in osteoarthritis

• Zahra Nabizadeh,
• Mahmoud Nasrollahzadeh,
• Hamed Daemi,
• Mohamadreza Baghaban Eslaminejad,
• Ali Akbar Shabani,
• Mehdi Dadashpour,
• Majid Mirmohammadkhani and
• Davood Nasrabadi

Beilstein J. Nanotechnol. 2022, 13, 363–389, doi:10.3762/bjnano.13.31

• different characteristics and kinds of behavior of compounds on submicrometer and nanometer scales and resulted in the development of new methods such as electrospinning, self-assembly, phase separation, nano-imprinting, and photolithography for the generation of new biomaterials with improved properties

• nature. They are constructed as NPs, nanofibers, nanocrystals, nanotubes, and nanofilms by high-tech methods of photolithography, electrospinning, nanoimprinting, and phase separation. Due to the hierarchical structure of articular cartilage ECM, there is considerable enthusiasm regarding the use of

• , electrospinning, weaving, phase separation, and template synthesis [102]. Electrospinning is widely used given its simplicity, cost effectiveness, unlimited substrate use, appreciable surface to volume ratio, tunable porosity, and ability to generate nanofibers over a wide range of sizes and shapes [102

Interfacial nanoarchitectonics for ZIF-8 membranes with enhanced gas separation

• Season S. Chen,
• Zhen-Jie Yang,
• Chia-Hao Chang,
• Hoong-Uei Koh,
• Sameerah I. Al-Saeedi,
• Kuo-Lun Tung and
• Kevin C.-W. Wu

Beilstein J. Nanotechnol. 2022, 13, 313–324, doi:10.3762/bjnano.13.26

• Road, Taipei 10617, Taiwan Department of Chemistry, College of Science, Princess Nourah bint Abdulrahman University P.O.Box 84428. Riyadh 116711, Saudi Arabia 10.3762/bjnano.13.26 Abstract Metal-organic framework (MOF) membranes are potentially useful in gas separation applications. Conventional

• optimal synthesis conditions were determined (i.e., 80 °C for 12 h in 50 mM of 2-methylimidazole). The as-synthesized ZIF-8 membranes were then applied to CO2/N2 gas separation, which exhibited a maximum separation factor of 5.49 and CO2 gas permeance of 0.47 × 10−7 mol·m−2·s−1·Pa−1. Keywords: defect

• -free; gas separation; interfacial synthesis; metal-organic frameworks; ZIF membranes; Introduction Carbon dioxide (CO2) is one of the major greenhouse gases emitted through human activities contributing to global climate change. According to United States Environmental Protection Agency (US EPA), CO2

The effect of metal surface nanomorphology on the output performance of a TENG

• Yiru Wang,
• Xin Zhao,
• Yang Liu and
• Wenjun Zhou

Beilstein J. Nanotechnol. 2022, 13, 298–312, doi:10.3762/bjnano.13.25

• Normal University, Neijiang 641100, China 10.3762/bjnano.13.25 Abstract In this work, the effect of charge density and nanomorphology of a metal tip on the output performance of a triboelectric nanogenerator (TENG) is studied. The basic working principle of the TENG is charge transfer after separation

• through the “contact and separation” method. One cyclic period of contact and separation was set to 1.5 s (contact of 0.75 s and separation of 0.75 s). The applied force from the mechanical shaker was fixed at 100 N. Output voltage and current were measured using a digital oscilloscope and an

• positive, and that on PTFE is negative (Figure 3a). A separation is caused by the removal of the external force, and electrons flow from the PTFE electrode to the Cu electrode (Figure 3b). Then, charge exchange is carried out at the contacts. Electrical equilibrium is formed when the Cu and the PTFE are

Investigation of a memory effect in a Au/(Ti–Cu)Ox-gradient thin film/TiAlV structure

• Damian Wojcieszak,
• Jarosław Domaradzki,
• Michał Mazur,
• Tomasz Kotwica and
• Danuta Kaczmarek

Beilstein J. Nanotechnol. 2022, 13, 265–273, doi:10.3762/bjnano.13.21

• the presence of Cu2+ species related to the CuO oxide [48][49][50]. The XPS spectrum of the Ti 2p core level is presented in Figure 6b. The position of the Ti 2p doublet and the binding energy separation between Ti 2p3/2 and Ti 2p1/2 (marked in the figure as ΔEW) equal to 5.8 eV testifies the

Impact of device design on the electronic and optoelectronic properties of integrated Ru-terpyridine complexes

• Max Mennicken,
• Sophia Katharina Peter,
• Corinna Kaulen,
• Ulrich Simon and
• Silvia Karthäuser

Beilstein J. Nanotechnol. 2022, 13, 219–229, doi:10.3762/bjnano.13.16

• -complex wire devices have been fabricated using nanoelectrodes with a separation of 8 to 20 nm and the above described growth process. The electrical behavior of the thus formed solid-state junctions was measured by cyclic current vs voltage (I/U) sweeps in the voltage range −1.3 V < U < +1.3 V. The

• Fermi–Dirac distribution, and indicates a tunneling mechanism [33][34][35]. A tunneling mechanism has been observed for single-Ru(MPTP)2–AuNP devices as well [15]. TEM images of Ru(MPTP)2–AuNP assemblies point to a nanoparticle separation of about 4 nm corresponding to slightly intercalating ligand

• value is based on sequential tunneling from AuNP to AuNP, a separation of 4 nm between the AuNP, a decay constant of β = 3.1 nm−1 for the Ru(MPTP)2-complex (for details see Supporting Information File 1, section 8) and fits exemplarily the experimentally obtained conductance values. Hence, the decreased

Engineered titania nanomaterials in advanced clinical applications

• Padmavati Sahare,
• Paulina Govea Alvarez,
• Juan Manual Sanchez Yanez,
• Gabriel Luna-Bárcenas,
• Samik Chakraborty,
• Sujay Paul and
• Miriam Estevez

Beilstein J. Nanotechnol. 2022, 13, 201–218, doi:10.3762/bjnano.13.15

• conversion agent. Following ultrasound (US) irradiation, the oxygen-deficient TiO2−x layer with numerous defects facilitates and accelerates the separation of electrons and holes, resulting in a high quantum yield of ROS for tumor eradication. Both in vitro cell-level and systematic in vivo studies of tumor

A comprehensive review on electrospun nanohybrid membranes for wastewater treatment

• Senuri Kumarage,
• Imalka Munaweera and
• Nilwala Kottegoda

Beilstein J. Nanotechnol. 2022, 13, 137–159, doi:10.3762/bjnano.13.10

• using lowly volatile CHCl3 while smooth, nonporous fibers were obtained when using highly volatile THF. The pore formation during electrospinning happens with phase separation, which can occur in two ways, namely thermally induced or vapor-induced, depending on temperature and humidity [38]. Hence, the

• [19]. Track etching also produces membranes of weak mechanical strength, and the technique is applicable onlyl for a limited number polymers. The track-etched membranes have low porosity and the technique is more expensive than electrospinning [1]. Phase separation is also a versatile membrane

• fabrication technique. Yet, it has been reported that the interconnected open pore structures and tailorable membrane thickness of electrospun membranes result in superior porosity and permeability compared to nonsolvent-induced phase separation (NIP) and thermally induced phase separation (TIP) membranes [49

Tin dioxide nanomaterial-based photocatalysts for nitrogen oxide oxidation: a review

• Viet Van Pham,
• Hong-Huy Tran,
• Thao Kim Truong and
• Thi Minh Cao

Beilstein J. Nanotechnol. 2022, 13, 96–113, doi:10.3762/bjnano.13.7

• extending the light harvesting range and promoting the separation of photogenerated electrons. A considerable amount of reactive oxygen radicals was produced during the photocatalytic reaction, resulting from the large amount of free surface OH groups. PL, photocurrent response, electrochemical impedance

• band structure, which remains critical for studying charge separation [29]. In another study, a SnO2–Zn2SnO4 Z-scheme photocatalyst system was prepared with a graphene modification to create surface vacancy sites in the composite, which contributed to an enhanced photoactivity in the oxidation of NO

• of SnO2. Moreover, enhanced visible light response and enhanced charge separation in the sample with GQDs have been observed (Figure 13c). The EIS measurements (Figure 13d) indicated that the diameter of the arc radius of SnO2/GQDs (1%) is much smaller than that of SnO2, confirming that the GQDs

Influence of magnetic domain walls on all-optical magnetic toggle switching in a ferrimagnetic GdFe film

• Rahil Hosseinifar,
• Evangelos Golias,
• Ivar Kumberg,
• Quentin Guillet,
• Karl Frischmuth,
• Sangeeta Thakur,
• Mario Fix,
• Manfred Albrecht,
• Florian Kronast and
• Wolfgang Kuch

Beilstein J. Nanotechnol. 2022, 13, 74–81, doi:10.3762/bjnano.13.5

• bottom row of Figure 3D shows enlarged images of the same domain as in Figure 3A and Figure 3B. Between each image, two laser pulses were applied with a temporal separation of the order of 1 s except for pulses 3 and 4, which had a separation of about 1 min. The number of laser pulses applied since the