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
Non-equilibrium deposition of phase pure Cu2O thin films at reduced growth temperature
Archana Subramaniyan,John D. Perkins,Ryan O'Hayre,Stephan Lany,Vladan Stevanović,David S. Ginley,Andriy Zakutayev +6 more
TL;DR: In this article, a non-monotonic effect of Ptot on Cu-O phase formation is found using high-throughput combinatorial-pulsed laser deposition.
Journal ArticleDOI
Ta3N5-Nanorods enabling highly efficient water oxidation via advantageous light harvesting and charge collection
Yuriy Pihosh,Tsutomu Minegishi,Vikas Nandal,Tomohiro Higashi,Masao Katayama,Taro Yamada,Yutaka Sasaki,Kazuhiko Seki,Yohichi Suzuki,Mamiko Nakabayashi,Masakazu Sugiyama,Kazunari Domen +11 more
TL;DR: In this paper, a polycrystalline Ta3N5-nanorod with large grain domains was fabricated to achieve a completely saturated photocurrent of 9.95 mA cm−2 at 1.05 V (versus RHE).
Journal ArticleDOI
Highly stable hierarchical p-CuO/ZnO nanorod/nanobranch photoelectrode for efficient solar energy conversion
Ulugbek Shaislamov,Karthikeyan Krishnamoorthy,Sang-Jae Kim,Amir Abidov,Bunyod Allabergenov,Sungjin Kim,Sooseok Choi,Rai Suresh,Waqar Muhammad Ahmed,Heon-Ju Lee +9 more
TL;DR: In this article, a facile fabrication of highly stable CuO/ZnO nanorod-nanobranch based photocathode for photoelectrochemical hydrogen generation was demonstrated.
Journal ArticleDOI
Synthesis of Nanostructured BaTaO2N Thin Films as Photoanodes for Solar Water Splitting
Chizhong Wang,Takashi Hisatomi,Tsutomu Minegishi,Tsutomu Minegishi,Qian Wang,Miao Zhong,Masao Katayama,Jun Kubota,Kazunari Domen +8 more
TL;DR: In this article, the synthesis of nanostructured BaTaO2N thin films on metallic Ta substrates, and their application as photoanodes for solar-driven photoelectrochemical water oxidation were studied.
Journal ArticleDOI
On the similarity and dissimilarity between photocatalytic water splitting and photocatalytic degradation of pollutants.
Sagi Pasternak,Yaron Paz +1 more
TL;DR: The main similarities stem from the common dependence on the absorption of photons and on subsequent charge-carrier dynamics and the main dissimilarities are linked to thermodynamics, the type of reactants and end products, and to the role of adsorption and desorption.
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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