Search results
Search for "electrolysis" in Full Text gives 32 result(s) in Beilstein Journal of Nanotechnology.
Evaluation of electrosynthesized reduced graphene oxide–Ni/Fe/Co-based (oxy)hydroxide catalysts towards the oxygen evolution reaction
Beilstein J. Nanotechnol. 2023, 14, 420–433, doi:10.3762/bjnano.14.34
- production of hydrogen energy is focused mainly on hydrocarbon reforming, which is a low-efficiency and environmentally unfriendly process [1][2]. As an alternative, water electrolysis using renewable energy sources has recently been extensively studied [3]. The main limitation to the efficiency of this
Photoelectrochemical water oxidation over TiO2 nanotubes modified with MoS2 and g-C3N4
Beilstein J. Nanotechnol. 2022, 13, 1541–1550, doi:10.3762/bjnano.13.127
- . Hydrogen is often synthesized via hydrocarbon compounds or water electrolysis [1]. Methods to produce hydrogen via electrochemical or photo-electrochemical (PEC) water splitting are considered a future direction of renewable fuel development [2][3][4]. The use of solar energy to activate catalytic
Recent trends in Bi-based nanomaterials: challenges, fabrication, enhancement techniques, and environmental applications
Beilstein J. Nanotechnol. 2022, 13, 1316–1336, doi:10.3762/bjnano.13.109
- produced primarily by the electrolysis of water, in parts using solar energy, and the reformation of fossil fuels [110]. The conversion of water into hydrogen by using solar energy is considered the best way to produce hydrogen [111]. Photocatalysts still face the following issues regarding efficient water
A comprehensive review on electrospun nanohybrid membranes for wastewater treatment
Beilstein J. Nanotechnol. 2022, 13, 137–159, doi:10.3762/bjnano.13.10
Fusion of purple membranes triggered by immobilization on carbon nanomembranes
Beilstein J. Nanotechnol. 2021, 12, 93–101, doi:10.3762/bjnano.12.8
- fragments occur. Here, bubbles may have been formed through electrolysis. It has been found that the fusion mechanism also depends on the DPR time. After 3 min of DPR time first connections between the different PM patches can be observed indicating incipient fusion. No PM fusion could be observed when the
Atomic layer deposition for efficient oxygen evolution reaction at Pt/Ir catalyst layers
Beilstein J. Nanotechnol. 2020, 11, 952–959, doi:10.3762/bjnano.11.79
- room temperature), one electrochemical characterization (linear voltammetry performed at room temperature), and we will quantify (a) current densities, (b) mass activites (given a certain noble-metal loading) and (c) stability (quantified as a change in current density after bulk electrolysis). We
Electrochemically derived functionalized graphene for bulk production of hydrogen peroxide
Beilstein J. Nanotechnol. 2020, 11, 432–442, doi:10.3762/bjnano.11.34
- graphene with tunable rate parameters, such as the rate constant and exchange current density. Higher oxygen-containing exfoliated graphene is known to undergo a two-electron reduction path in ORR having an efficiency of about 80 ± 2% even at high overpotential. Bulk production of H2O2 via electrolysis was
- in exchange current density. Both io and k0 emphasize the importance of the quantity of functional groups in ORR. Large-scale production of peroxide using these EEG samples are conducted using bulk electrolysis. EEG-coated and uncoated graphite paper was employed for the electrochemical production of
- solution was diluted to 1%) and the details can be found in Supporting Information File 1 (Figure S9) [61]. Bulk electrolysis was conducted using the above-mentioned inks. In brief, 100 µL of the above-prepared catalyst ink was drop cast over a 1 cm2 area of the Toray carbon paper having 100 mm length and
Concurrent nanoscale surface etching and SnO2 loading of carbon fibers for vanadium ion redox enhancement
Beilstein J. Nanotechnol. 2019, 10, 985–992, doi:10.3762/bjnano.10.99
- with high-purity water before the incorporation. The anolyte (40 cm3) and catholyte (20 cm3) were prepared by electrolysis (charging) of 1 M VOSO4 + 2 M H2SO4 until the full conversion of VO2+ to VO2+ and V2+. After the electrolysis, half of the anolyte was removed and the pre-discharge was carried out
Nanoporous water oxidation electrodes with a low loading of laser-deposited Ru/C exhibit enhanced corrosion stability
Beilstein J. Nanotechnol. 2019, 10, 157–167, doi:10.3762/bjnano.10.15
- stability of planar and structured Ru/C electrodes can be tested further upon prolonged electrolysis. For this purpose, both types of electrodes were maintained at +0.90 V for 5 h (Figure 10). The water oxidation current density J on the planar Ru/C electrode declines to almost zero within about five
- electrocatalyst to the point that a steady state is reached upon continuous electrolysis. The current then stays stable for several hours. The comparison with the literature shows that only Kokoh et al. tested the long-term stability of their Ru-based electrocatalyst [14]. The fine dispersion of Ru in the
- electrolysis were performed from the open-circuit potential at room temperature using Gamry Interface 1000 potentiostats. The standard redox potential of the Ag/AgCl/KCl(sat.) reference electrode is shifted by +0.20 V relative to the normal hydrogen electrode (NHE). Cyclic and linear sweep voltammograms were
Thickness-dependent photoelectrochemical properties of a semitransparent Co3O4 photocathode
Beilstein J. Nanotechnol. 2018, 9, 2432–2442, doi:10.3762/bjnano.9.228
- epoxy resin was applied to the rest of the surface to prevent an electrical connection to the working terminal of the potentiostat/galvanostat. Co3O4 has evolved as a chemically resistive and stable material for electrolysis reactions [20][25][26][27], and therefore the potential of the Co3O4 working
Improving the catalytic activity for hydrogen evolution of monolayered SnSe2(1−x)S2x by mechanical strain
Beilstein J. Nanotechnol. 2018, 9, 1820–1827, doi:10.3762/bjnano.9.173
- electrolysis is a clean and “green” approach [3][4][5][6][7]. Efficient electrocatalysts for the hydrogen evolution reaction (HER) with high conversion efficiency are essential for the continuous generation of hydrogen. The platinum (Pt) group materials are regarded as the best electrocatalysts for HER
Light extraction efficiency enhancement of flip-chip blue light-emitting diodes by anodic aluminum oxide
Beilstein J. Nanotechnol. 2018, 9, 1602–1612, doi:10.3762/bjnano.9.152
- platinum sheet was used as the cathode. The electrolysis experiment was conducted under 40 V with an electrolysis time of 45 min. Then, the system was placed in a mixed solution of 6 wt % phosphoric acid and 1.5 wt % chromic acid, and the first pore-widening process (1 h) and the second electrolysis
Bombyx mori silk/titania/gold hybrid materials for photocatalytic water splitting: combining renewable raw materials with clean fuels
Beilstein J. Nanotechnol. 2018, 9, 187–204, doi:10.3762/bjnano.9.21
- the limitations of H2 is the efficient and sustainable H2 production. Currently, H2 is mainly produced by steam reforming of gas and oil, by catalytic reforming, or by water electrolysis [3][4]. In 1972 Fujishima and Honda reported that TiO2 is able to split water [5], a seminal discovery that has led
Bi-layer sandwich film for antibacterial catheters
Beilstein J. Nanotechnol. 2017, 8, 1982–2001, doi:10.3762/bjnano.8.199
- slurry of a silver salt [17][18][29]. The main issue is the low adhesion of these films. Therefore, the deposition of metallic silver has come to the fore. Because the substrate (organic polymer) is electrically insulating, the most common technique, electrolysis, is not applicable. Only an electroless
Effect of the fluorination technique on the surface-fluorination patterning of double-walled carbon nanotubes
Beilstein J. Nanotechnol. 2017, 8, 1688–1698, doi:10.3762/bjnano.8.169
- of F2 and HF, produced by electrolysis of a KF·2HF melt, was conducted at 200 °C for 10 min. Fluorination with gaseous BrF3 was carried out at room temperature in a Teflon flask, where the sample was held over a 10 wt % solution of BrF3 in Br2 for seven days. Plasma fluorination was performed by
Growth, structure and stability of sputter-deposited MoS2 thin films
Beilstein J. Nanotechnol. 2017, 8, 1115–1126, doi:10.3762/bjnano.8.113
- ≈10 to ≈1000 nm which were deposited by magnetron sputter deposition onto SiO2-coated silicon (Si) wafers and reticulated vitreous carbon (RVC) electrodes for water electrolysis. Surface morphology, structure, chemical composition, stability and electrical properties of MoS2 thin films deposited at
- electrochemical performance. These assertions are further explored by a second set of electrochemical experiments where reticulated vitreous carbon (RVC) foam electrodes coated with our PVD MoS2 were tested for water electrolysis. RVC foam electrodes are a commercial electrode type for bulk electrolysis
- employed here is aimed at realization of microbial electrolysis cells/sustainable base production in which the MoS2- or Pt-coated electrodes would be used on the cathodic side [54]. Here, we compared 400 °C deposited PVD MoS2 coatings of 10 and 100 nm thickness with two 50 and 25 nm thick reference Pt
Synthesis of graphene–transition metal oxide hybrid nanoparticles and their application in various fields
Beilstein J. Nanotechnol. 2017, 8, 688–714, doi:10.3762/bjnano.8.74
- micropipette tip which can detect nonenzymatic glucose [173]. N-doped graphene/Co3O4 has been used for selective oxidation of olefins and alcohols [174], LIBs [175], and oxygen reduction [176], and as a water electrolysis catalyst [177]. Co3O4 NPs were anchored on conducting graphene and used as an anode for
Gas sensing properties of MWCNT layers electrochemically decorated with Au and Pd nanoparticles
Beilstein J. Nanotechnol. 2017, 8, 592–603, doi:10.3762/bjnano.8.64
- directly decorate MWCNT-based gas sensors were prepared by the sacrificial anode electrolysis (SAE) method, as reported elsewhere [33][34]. The electrochemical synthesis was carried out with a three-electrode cell consisting of an Ag/AgNO3 (0.1 M in acetonitrile) electrode, used as reference, and the metal
The longstanding challenge of the nanocrystallization of 1,3,5-trinitroperhydro-1,3,5-triazine (RDX)
Beilstein J. Nanotechnol. 2017, 8, 452–466, doi:10.3762/bjnano.8.49
- pool [102]. Many technical limitations restricted their studies for current issues: only straight-lined liquid jets were studied with basic optical techniques where the smallest drops and bubbles could not be indexed. However, Miyatake et al. [103] interestingly used electrolysis to generate more
Sensitive detection of hydrocarbon gases using electrochemically Pd-modified ZnO chemiresistors
Beilstein J. Nanotechnol. 2017, 8, 82–90, doi:10.3762/bjnano.8.9
- clustering with the subsequent worsening of their catalytic activity [10]. Therefore, various new synthetic procedures have been proposed to overcome these limits [42][43]. In this study, we propose a one-step strategy based on sacrificial anode electrolysis (SAE) to synthesize stabilized Pd NPs [44
- tetrahydrofurane (THF)/acetonitrile (ACN) (3:1 ratio). Electrolysis was performed following the experimental conditions reported in [46]. Further, Pd@ZnO nanostructures were centrifuged (6000 rpm) to separate the unsupported colloidal Pd NPs from the heavier Pd@ZnO hybrid systems. Subsequently, unfunctionalized
Properties of Ni and Ni–Fe nanowires electrochemically deposited into a porous alumina template
Beilstein J. Nanotechnol. 2016, 7, 1709–1717, doi:10.3762/bjnano.7.163
- damages the morphology and smoothness of pore surface and, thus, the reproduction quality and uniformity of the NWs. The deposition at a certain constant potential (potentiostatic mode, controlled potential electrolysis) is the most commonly used method to fabricate multilayered small-height NWs with the
Evaluation of gas-sensing properties of ZnO nanostructures electrochemically doped with Au nanophases
Beilstein J. Nanotechnol. 2016, 7, 22–31, doi:10.3762/bjnano.7.3
- Technologies, Energy and Sustainable Economic Development (ENEA), Technical Unit for Materials Technologies - Brindisi Research Center, Mesagne (BR), Italy CNR-IFN Bari, Bari, Italy 10.3762/bjnano.7.3 Abstract A one-step electrochemical method based on sacrificial anode electrolysis (SAE) was used to deposit
- of an in situ electrodecoration procedure based on the so called sacrificial anode electrolysis (SAE) [42][43]. Subsequently, ZnO and Au@ZnO nanocomposites, annealed at two different temperatures, 300 and 550 °C, were morphologically and chemically characterized by means transmission and scanning
- the electrolytic cell and stirred to yield a homogeneous ZnO suspension. The electrolysis was performed in potentiostatic mode, fixing the potential of the working electrode at 1 V, and stopped after the total charge reached 300 C [48]. Subsequently, the Au@ZnO nanocomposite was centrifuged at 6000
Enhanced model for determining the number of graphene layers and their distribution from X-ray diffraction data
Beilstein J. Nanotechnol. 2015, 6, 2113–2122, doi:10.3762/bjnano.6.216
- thickness distribution is used to calculate theoretical 002 X-ray diffraction (XRD) peak intensities. An analysis was performed upon graphene samples produced by two different electrochemical procedures: electrolysis in aqueous electrolyte and electrolysis in molten salts, both using a nonstationary current
- layers and their number by XRD data. The enhanced model was applied to graphene samples produced by two electrochemical methods: high temperature electrolysis in molten salt and electrolysis in aqueous solution, both using a nonstationary current regime. The enhancement of the model provides a great
- presented in this work is the following: graphene samples obtained by electrolysis in molten salts are denominated GMSE1, GMSE3 and GMSE4, and graphene samples produced by electrolysis in aqueous electrolyte are denominated GAE1 and GAE2. Results and Discussion The XRD pattern of each of the samples was
Liquid fuel cells
Beilstein J. Nanotechnol. 2014, 5, 1399–1418, doi:10.3762/bjnano.5.153
- glyceraldehyde as the major one. The addition of bismuth as a saturated solution redirects the reaction towards 100% selective formation of dihydroxyacetone [109]. The bulk electrolysis of glycerol in 0.1 M NaOH on Ni/C and NiCo/C anodes gives formate, glycolate and glycerate as major products [110]. The
Magnesium batteries: Current state of the art, issues and future perspectives
Beilstein J. Nanotechnol. 2014, 5, 1291–1311, doi:10.3762/bjnano.5.143
- successfully plating magnesium metal from the electrolysis of Grignard reagents. These included Grignard, aminomagnesium chlorides and organoborate reagents in ethereal solvents. They screened electrolytes based on the possibility of reversibly electrodepositing/stripping magnesium metal and intercalating
- work confirmed that ionic salts could be made compatible with the magnesium metal if the anion in the salt has sufficient reductive stability (note that this was also the first time to show Mg plating possibility in a BH4−-containing system, as an old report on Mg plating using electrolysis (on Cu
- cathode and Al anode) of a MgBr2, LiBH4 mixture in diethylether/tetrahydrofuran showed lots of boron impurities, likely generated from the electrolysis side reaction. No information supporting Mg(BH4)2 formation were given [38]). Mohtadi et al. [27] also developed a magnesium borohydride–lithium
Other Beilstein-Institut Open Science Activities
