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
Controllable proton and CO2 photoreduction over Cu2O with various morphologies
Albertus D. Handoko,Junwang Tang +1 more
TL;DR: In this article, the photocatalytic reduction preference shifts from H2 (water splitting) to CO (CO2 reduction) by controlling the exposed facets of Cu2O.
Journal ArticleDOI
Evidence and Effect of Photogenerated Charge Transfer for Enhanced Photocatalysis in WO3/TiO2 Heterojunction Films: A Computational and Experimental Study
Carlos Sotelo-Vazquez,Raul Quesada-Cabrera,Min Ling,David O. Scanlon,Andreas Kafizas,Pardeep K. Thakur,Tien-Lin Lee,Alaric Taylor,Graeme W. Watson,Robert G. Palgrave,James R. Durrant,Christopher S. Blackman,Ivan P. Parkin +12 more
TL;DR: In this paper, the WO3/TiO2 heterojunction grown by chemical vapor deposition is investigated, which consists of a highly nanostructured WO 3 layer of vertically aligned nanorods that is then coated with a conformal layer of TiO2.
Journal ArticleDOI
p-Type CuBi2O4: an easily accessible photocathodic material for high-efficiency water splitting
Dawei Cao,Nasori Nasori,Zhijie Wang,Zhijie Wang,Yan Mi,Liaoyong Wen,Ying Yang,Shengchun Qu,Zhanguo Wang,Yong Lei +9 more
TL;DR: In this paper, a high-efficiency photo-electrochemical (PEC) system was proposed, where the CuBi2O4 (CBO) films were fabricated on FTO (fluorine doped tin oxide) and FTO/Au substrates, respectively, through the electrochemical deposition approach.
Journal ArticleDOI
Directed Assembly of Nanoparticle Catalysts on Nanowire Photoelectrodes for Photoelectrochemical CO2 Reduction.
TL;DR: This simple photoelectrode assembly process will lead to further progress in artificial photosynthesis, by allowing the combination of developments in each subfield to create an efficient light-driven system generating carbon-based fuels.
Journal ArticleDOI
Tuning of the crystal engineering and photoelectrochemical properties of crystalline tungsten oxide for optoelectronic device applications
Jin You Zheng,Zeeshan Haider,Thanh Khue Van,Amol U. Pawar,Myung Jong Kang,Chang Woo Kim,Young Soo Kang +6 more
TL;DR: In this paper, the authors describe the synthesis of 2D WO3 crystals with the {002} facet primarily exposed, octahedral wO3 or WO 3·nH2O with exposed {111} facets, and WO-3 films with dominant orientations, such as orientation along the ''002'' facet.
References
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Journal Article
Photoelectrochemical cells : Materials for clean energy
TL;DR: In this paper, the authors look into the historical background, and present status and development prospects for photoelectrochemical cells, based on nanocrystalline materials and conducting polymer films.
Journal ArticleDOI
A Monolithic Photovoltaic-Photoelectrochemical Device for Hydrogen Production via Water Splitting
O. Khaselev,John A. Turner +1 more
TL;DR: Direct water electrolysis was achieved with a novel, integrated, monolithic photoelectrochemical-photovoltaic design that splits water directly upon illumination; light is the only energy input.
Journal ArticleDOI
Cu2O as a photocatalyst for overall water splitting under visible light irradiation
Michikazu Hara,Takeshi Kondo,Mutsuko Komoda,Sigeru Ikeda,Junko N. Kondo,Kazunari Domen,Kiyoaki Shinohara,Akira Tanaka +7 more
TL;DR: In this paper, the photocatalytic water splitting on Cu2O powder proceeds without any noticeable decrease in the activity for more than 1900 h. The authors investigated the decomposition of water into H2 and O2 under visible light irradiation.
Journal ArticleDOI
High Density n-Si/n-TiO2 Core/Shell Nanowire Arrays with Enhanced Photoactivity
TL;DR: It is observed that highly dense Si/TiO(2) core/shell nanowire arrays enhanced the photocurrent by 2.5 times compared to planar Si/ TiO( 2) structure due to their low reflectance and high surface area.
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