Journal ArticleDOI
Highly active oxide photocathode for photoelectrochemical water reduction
Adriana Paracchino,Vincent Laporte,Kevin Sivula,Michael Grätzel,Elijah Thimsen,Elijah Thimsen +5 more
TLDR
A highly active photocathode for solar H(2) production is presented, consisting of electrodeposited cuprous oxide, which was protected against photocathodic decomposition in water by nanolayers of Al-doped zinc oxide and titanium oxide and activated for hydrogen evolution with electroDeposited Pt nanoparticles.Abstract:
A clean and efficient way to overcome the limited supply of fossil fuels and the greenhouse effect is the production of hydrogen fuel from sunlight and water through the semiconductor/water junction of a photoelectrochemical cell, where energy collection and water electrolysis are combined into a single semiconductor electrode. We present a highly active photocathode for solar H(2) production, consisting of electrodeposited cuprous oxide, which was protected against photocathodic decomposition in water by nanolayers of Al-doped zinc oxide and titanium oxide and activated for hydrogen evolution with electrodeposited Pt nanoparticles. The roles of the different surface protection components were investigated, and in the best case electrodes showed photocurrents of up to -7.6 mA cm(-2) at a potential of 0 V versus the reversible hydrogen electrode at mild pH. The electrodes remained active after 1 h of testing, cuprous oxide was found to be stable during the water reduction reaction and the Faradaic efficiency was estimated to be close to 100%.read more
Citations
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Journal ArticleDOI
Earth-abundant catalysts for electrochemical and photoelectrochemical water splitting
TL;DR: In this article, the authors investigate progress towards photo-electrocatalytic water-splitting systems, with special emphasis on how they might be incorporated into photoelectrocaralyst systems.
Journal ArticleDOI
Enhanced catalytic activity in strained chemically exfoliated WS 2 nanosheets for hydrogen evolution
Damien Voiry,Hisato Yamaguchi,Junwen Li,Rafael Silva,Diego C. B. Alves,Takeshi Fujita,Mingwei Chen,Tewodros Asefa,Vivek B. Shenoy,Goki Eda,Manish Chhowalla +10 more
TL;DR: Analyses indicate that the enhanced electrocatalytic activity of WS₂ is associated with the high concentration of the strained metallic 1T (octahedral) phase in the as-exfoliated nanosheets.
Journal ArticleDOI
Synergetic Effect of MoS2 and Graphene as Cocatalysts for Enhanced Photocatalytic H2 Production Activity of TiO2 Nanoparticles
TL;DR: A new composite material consisting of TiO(2) nanocrystals grown in the presence of a layered MoS(2)/graphene hybrid as a high-performance photocatalyst for H( 2) evolution without noble metals is reported.
Journal ArticleDOI
Visible-light driven heterojunction photocatalysts for water splitting – a critical review
TL;DR: Li et al. as mentioned in this paper provided an overview of the concept of heterojunction construction and more importantly, the current state-of-the-art for the efficient, visible-light driven junction water splitting photo(electro)catalysts reported over the past ten years.
Journal ArticleDOI
Inorganic nanostructures for photoelectrochemical and photocatalytic water splitting
TL;DR: The current state of research on nanoscale-enhanced photoelectrodes and photocatalysts for the water splitting reaction with special emphasis of Fe(2)O(3) with an outlook on the challenges in solar fuel generation with nanoscales inorganic materials is reviewed.
References
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Journal ArticleDOI
Photoelectrochemistry of Porous p-Cu2O Films
TL;DR: Porous p-Cu 2 O films were prepared on transparent conductive glass from a dispersion of Cu 2 O powder in ethanol as discussed by the authors, and the photocurrent of the porous p-cu 2 O film was appreciably greater when compared to electrodeposited p-cog 2 o films.
Journal ArticleDOI
Fabrication and characterization of Cu2O nanorod arrays and their electrochemical performance in Li-ion batteries
TL;DR: In this paper, the performance of Cu 2 O nanorods in Li ion battery application was investigated, and it was shown that the nanorod arrays exhibit a capacity of 330 mAh/g after 100 cycles.
Journal ArticleDOI
Nanostructured Cu2O thin film electrodes prepared by electrodeposition for rechargeable lithium batteries
TL;DR: In this paper, uniform films of Cu2O with thickness below 1μm were prepared from a Cu(II) lactate solution, and they were tested as electrodes in lithium batteries and their electrochemical response was consistent with the Cu 2O+2e−−++−2Li+ ↔ 2Cu+Li2O reaction.
Journal ArticleDOI
Visible-light Energy Storage by Ti3+ in TiO2/Cu2O Bilayer Film
TL;DR: In this article, the authors demonstrated the energy storage ability of TiO2/Cu2O bilayer film using XPS and UV-vis absorption spectrum and XPS characterization.
Journal ArticleDOI
Electrochemical anticorrosion performance evaluation of Al2O3 coatings deposited by MOCVD on an industrial brass substrate
Francesca Guidi,Giuseppe Moretti,G. Carta,Marco Natali,Gilberto Rossetto,Zanella Pierino,G. Salmaso,Valentino Rigato +7 more
TL;DR: In this article, Alumina (Al 2 O 3 ) coatings of different thickness were deposited on brass substrate (BS) using the metal organic chemical vapour deposition (MOCVD) technique to evaluate the corrosion performance by EIS measurements.
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