Due to the synergistic effect, the Cr2O3–Mn2O3 composite has shown efficient charge transfer and hole trapping process for water splitting.
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Optical and electrocatalytic activity of the synthesized Pt/WO3–C nanocomposite in acidic and alkaline media.
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An entry from the Cambridge Structural Database, the world's repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely... more
An entry from the Cambridge Structural Database, the world's repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
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In the present study, we prepared a SnO2-Mn2O3 binary composite thin-film electrode by a single-step solution-based aerosol assisted chemical vapor deposition (AACVD) technique for photovoltaic applications. The grown composite thin films... more
In the present study, we prepared a SnO2-Mn2O3 binary composite thin-film electrode by a single-step solution-based aerosol assisted chemical vapor deposition (AACVD) technique for photovoltaic applications. The grown composite thin films were characterized to determine their properties, such as structure, composition, morphology and band gap by field emission scanning electron microscopy (FESEM), x-ray diffractometry (XRD), Raman scattering, energy-dispersive x-ray spectrometry (EDX), x-ray photoelectron spectroscopy (XPS) and UV-Vis absorption spectrophotometry. The evaluation of photoelectrochemical (PEC) response of as-synthesized SnO2-Mn2O3 composite photoelectrode, in comparison to the individual thin films of pristine SnO2 and Mn2O3 prepared from their respective precursors under the same conditions, engendered a promising improvement in photocurrent density. The synergistic effect between SnO2 and Mn2O3, the relevance of ball-like morphology, suitable and tunable energy band gap, and better absorbance under the visible range of light resulted in improved photocurrent of ~6.6 mA cm-2 at +0.7 V versus Ag/AgCl electrode of the binary composite, which was 16.5- and 3.4-fold higher than that of the pure SnO2 and Mn2O3, respectively. No apparent photocurrent decrease was observed during prolonged stability measurements for 300 s under one-sun illumination of 100 mW cm-2. The results confirmed the enhancement in PEC activity due to reduced recombination rate of photoinduced electron-hole pairs and improved interfacial charge transfer between electrode/electrolyte interface, which boost the PEC performance of SnO2-Mn2O3 binary composite thin film electrode towards water cleavage.
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Novel p–n SnO–TiO2 nanocomposite film electrodes were fabricated through a single step method and their photoelectrocatalytic properties were evaluated.
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Pristine Mn2O3and Ag–Mn2O3nanocomposite thin films deposited by AACVD on FTO showed photocurrent densities of 1.8 and 3 mA cm−2respectively.
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An electrochemical nitrite ions sensor electrode, CuO–2TiO2, has been developed using single molecular precursor [Cu2Ti4(O)2(OH)4(TF)8(THF)6]·THF in aerosol assisted chemical vapour deposition technique.
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Mesoporous nanostructures of tin(IV) oxide microballs are synthesized, using a single source precursor [Sn (OAc)(dmae)]2 (where OAc = Acetato and dmae = dimethylaminoethanolato). The as‐prepared microballs are characterized using X‐ray... more
Mesoporous nanostructures of tin(IV) oxide microballs are synthesized, using a single source precursor [Sn (OAc)(dmae)]2 (where OAc = Acetato and dmae = dimethylaminoethanolato). The as‐prepared microballs are characterized using X‐ray diffraction, field emission scanning electron microscopy (FESEM), Fourier transform infrared and UV‐vis spectroscopy, X‐ray photoelectron spectroscopy and impedance spectroscopy. The focused ion beam (FIB) images of the exterior and interior surfaces of the microballs disclosed the presence of porous structures with mesopore of sizes ranging from 56‐66 nm and 8.0 to 160 nm, respectively. The microballs exhibit high BET and Langmuir surface areas of 136 and 191.6 m2 g−1, respectively, and show capacities >600 mAhg−1 over 60 cycles, as compared with unmodified tin oxide‐based nanomaterials which show capacity < 500 mAh g−1 after 50 cycles.
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ABSTRACT Carbon corrosion and platinum dissolution are the two major catalyst layer degradation problems in polymer electrolyte membrane fuel cells (PEMFC). Ceramic addition can reduce the corrosion of carbon and increase the stability of... more
ABSTRACT Carbon corrosion and platinum dissolution are the two major catalyst layer degradation problems in polymer electrolyte membrane fuel cells (PEMFC). Ceramic addition can reduce the corrosion of carbon and increase the stability of catalysts. Pt/TiO2, Pt/TiO2-C, Pt/Al2O3 and Pt/Al2O3-C catalysts were synthesized and characterized. Electrochemical surface area of Pt/TiO2-C and Pt/Al2O3-C nanocomposite catalysts was much higher than the Pt/TiO2 and Pt/Al2O3 catalysts. Peak current, specific activity and mass activity of the catalysts was also determined by cyclic voltammetry and were much higher for the carbon nanocomposites. Exchange current densities were determined from Tafel plots. Heterogeneous rates of reaction of electro oxidation of methanol were determined for all the catalysts and were substantially higher for titania catalysts as compared to alumina added catalysts. Mass activity of Pt/TiO2-C was much higher than mass activity of Pt/Al2O3-C. Stability studies showed that addition of ceramics have increased the catalytic activity and durability of the catalysts considerably.
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A CoTiO3–TiO2composite electrode fabricated from single source precursor [Co2Ti4(μ-O)6(TFA)8(THF)6]·THF is tested for electrochemical detection of dopamine.