Branched WO3 Nanosheet Array with Layered C3N4 Heterojunctions and CoOx Nanoparticles as a Flexible Photoanode for Efficient Photoelectrochemical Water Oxidation

A hybrid WO3 /C3 N4 /CoOx system exhibits excellent photoelectrochemical activity for water oxidation. The system comprises a novel three-dimensionally branched WO3 nanosheet array coated with a layer of C3 N4 heterojunctions that are further decorated with CoOx nanoparticles. The photoelectrochemical activity arises from the effective light harvesting due to the 3D structure and "window effect," the excellent charge separation and transport in the heterojunction, and the fast interfacial charge collection and surface reactions due to the large surface area.

[1]  K. Müllen,et al.  Titania Nanosheet‐Mediated Construction of a Two‐Dimensional Titania/Cadmium Sulfide Heterostructure for High Hydrogen Evolution Activity , 2014, Advanced materials.

[2]  Haolan Xu,et al.  In-situ photo-reducing graphene oxide to create Zn0.5Cd0.5S porous nanosheets/RGO composites as highly stable and efficient photoelectrocatalysts for visible-light-driven water splitting , 2014 .

[3]  Binbin Chang,et al.  Graphitic carbon nitride–BiVO4 heterojunctions: simple hydrothermal synthesis and high photocatalytic performances , 2014 .

[4]  X. Lou,et al.  Two-dimensional nanosheets for photoelectrochemical water splitting: Possibilities and opportunities , 2013 .

[5]  Xiaogang Yang,et al.  Hematite-based water splitting with low turn-on voltages. , 2013, Angewandte Chemie.

[6]  Alireza Kargar,et al.  ZnO/CuO heterojunction branched nanowires for photoelectrochemical hydrogen generation. , 2013, ACS nano.

[7]  Junhong Chen,et al.  Constructing 2D Porous Graphitic C3N4 Nanosheets/Nitrogen‐Doped Graphene/Layered MoS2 Ternary Nanojunction with Enhanced Photoelectrochemical Activity , 2013, Advanced materials.

[8]  Tao Yu,et al.  A co-catalyst-loaded Ta(3)N(5) photoanode with a high solar photocurrent for water splitting upon facile removal of the surface layer. , 2013, Angewandte Chemie.

[9]  Yao Xu,et al.  Synthesis and properties of octahedral Co3O4 single-crystalline nanoparticles enclosed by (111) facets , 2013 .

[10]  G. Jung,et al.  3D Branched nanowire photoelectrochemical electrodes for efficient solar water splitting. , 2013, ACS nano.

[11]  R. van de Krol,et al.  Efficient plasma route to nanostructure materials: case study on the use of m-WO3 for solar water splitting. , 2013, ACS applied materials & interfaces.

[12]  Jiangtian Li,et al.  Solar hydrogen generation by nanoscale p-n junction of p-type molybdenum disulfide/n-type nitrogen-doped reduced graphene oxide. , 2013, Journal of the American Chemical Society.

[13]  Xinbin Ma,et al.  Branched TiO2 nanoarrays sensitized with CdS quantum dots for highly efficient photoelectrochemical water splitting. , 2013, Physical chemistry chemical physics : PCCP.

[14]  Kazunari Domen,et al.  Fabrication of an efficient BaTaO2N photoanode harvesting a wide range of visible light for water splitting. , 2013, Journal of the American Chemical Society.

[15]  G. Jung,et al.  Tailoring n-ZnO/p-Si branched nanowire heterostructures for selective photoelectrochemical water oxidation or reduction. , 2013, Nano letters.

[16]  Hua-ming Li,et al.  Visible-light-induced WO3/g-C3N4 composites with enhanced photocatalytic activity. , 2013, Dalton transactions.

[17]  Xuhui Sun,et al.  Facile synthesis of carbon-coated hematite nanostructures for solar water splitting , 2013 .

[18]  P. Ajayan,et al.  Exfoliated Graphitic Carbon Nitride Nanosheets as Efficient Catalysts for Hydrogen Evolution Under Visible Light , 2013, Advanced materials.

[19]  K. Sun,et al.  Branched TiO2/Si nanostructures for enhanced photoelectrochemical water splitting , 2013 .

[20]  K. Domen,et al.  Fabrication of CaFe2O4/TaON heterojunction photoanode for photoelectrochemical water oxidation. , 2013, Journal of the American Chemical Society.

[21]  Jin‐Ook Baeg,et al.  A facile one-step synthesis of single crystalline hierarchical WO3 with enhanced activity for photoelectrochemical solar water oxidation , 2013 .

[22]  Frank E. Osterloh,et al.  Inorganic nanostructures for photoelectrochemical and photocatalytic water splitting. , 2013, Chemical Society reviews.

[23]  Yongjing Lin,et al.  Forming heterojunctions at the nanoscale for improved photoelectrochemical water splitting by semiconductor materials: case studies on hematite. , 2013, Accounts of chemical research.

[24]  S. Chae,et al.  Facile growth of aligned WO3 nanorods on FTO substrate for enhanced photoanodic water oxidation activity , 2013 .

[25]  Pingyun Feng,et al.  A three-dimensional branched cobalt-doped α-Fe2O3 nanorod/MgFe2O4 heterojunction array as a flexible photoanode for efficient photoelectrochemical water oxidation. , 2013, Angewandte Chemie.

[26]  Hui‐Ming Cheng,et al.  Graphene‐Like Carbon Nitride Nanosheets for Improved Photocatalytic Activities , 2012 .

[27]  Fan Zuo,et al.  Visible light-driven α-Fe₂O₃ nanorod/graphene/BiV₁-xMoxO₄ core/shell heterojunction array for efficient photoelectrochemical water splitting. , 2012, Nano letters.

[28]  P. Schmuki,et al.  Rapid anodic formation of high aspect ratio WO3 layers with self-ordered nanochannel geometry and use in photocatalysis. , 2012, Chemistry.

[29]  Z. Yin,et al.  Full Solution‐Processed Synthesis of All Metal Oxide‐Based Tree‐like Heterostructures on Fluorine‐Doped Tin Oxide for Water Splitting , 2012, Advanced materials.

[30]  Nguyen Duc Hoa,et al.  A morphological control of tungsten oxide nanowires by thermal evaporation method for sub-ppm NO2 gas sensor application , 2012 .

[31]  H. Fan,et al.  Branched nanowires: Synthesis and energy applications , 2012 .

[32]  Xien Liu,et al.  Nanostructure-based WO3 photoanodes for photoelectrochemical water splitting. , 2012, Physical chemistry chemical physics : PCCP.

[33]  K. Domen,et al.  Cobalt-modified porous single-crystalline LaTiO2N for highly efficient water oxidation under visible light. , 2012, Journal of the American Chemical Society.

[34]  Kazunari Domen,et al.  Highly stable water splitting on oxynitride TaON photoanode system under visible light irradiation. , 2012, Journal of the American Chemical Society.

[35]  Yifu Yu,et al.  Synthesis of hollow Cd(x)Zn(1-x) Se nanoframes through the selective cation exchange of inorganic-organic hybrid ZnSe-amine nanoflakes with cadmium ions. , 2012, Angewandte Chemie.

[36]  G. Gary Wang,et al.  Hydrogen-treated WO3 nanoflakes show enhanced photostability , 2012 .

[37]  Alireza Kargar,et al.  3D branched nanowire heterojunction photoelectrodes for high-efficiency solar water splitting and H2 generation. , 2012, Nanoscale.

[38]  Yong Wang,et al.  Polymeric graphitic carbon nitride as a heterogeneous organocatalyst: from photochemistry to multipurpose catalysis to sustainable chemistry. , 2012, Angewandte Chemie.

[39]  Xiaolin Zheng,et al.  Branched TiO₂ nanorods for photoelectrochemical hydrogen production. , 2011, Nano letters.

[40]  Jian Shi,et al.  Three-dimensional high-density hierarchical nanowire architecture for high-performance photoelectrochemical electrodes. , 2011, Nano letters.

[41]  Klaus Müllen,et al.  Graphene-based carbon nitride nanosheets as efficient metal-free electrocatalysts for oxygen reduction reactions. , 2011, Angewandte Chemie.

[42]  Roberto Argazzi,et al.  Efficient photoelectrochemical water splitting by anodically grown WO3 electrodes. , 2011, Langmuir : the ACS journal of surfaces and colloids.

[43]  Liejin Guo,et al.  Nanostructured WO₃/BiVO₄ heterojunction films for efficient photoelectrochemical water splitting. , 2011, Nano letters.

[44]  S. Cho,et al.  Synthesis of transparent mesoporous tungsten trioxide films with enhanced photoelectrochemical response: application to unassisted solar water splitting† , 2011 .

[45]  Jiaguo Yu,et al.  Synthesis and Enhanced Visible-Light Photoelectrocatalytic Activity of p−n Junction BiOI/TiO2 Nanotube Arrays , 2011 .

[46]  J. A. Seabold,et al.  Effect of a Cobalt-Based Oxygen Evolution Catalyst on the Stability and the Selectivity of Photo-Oxidation Reactions of a WO3 Photoanode , 2011 .

[47]  James R. McKone,et al.  Solar water splitting cells. , 2010, Chemical reviews.

[48]  Kyoung-Shin Choi,et al.  Photochemical deposition of cobalt-based oxygen evolving catalyst on a semiconductor photoanode for solar oxygen production , 2009, Proceedings of the National Academy of Sciences.

[49]  Hongtao Yu,et al.  Silicon nanowire/TiO2 heterojunction arrays for effective photoelectrocatalysis under simulated solar light irradiation , 2009 .

[50]  Daniel G. Nocera,et al.  In Situ Formation of an Oxygen-Evolving Catalyst in Neutral Water Containing Phosphate and Co2+ , 2008, Science.

[51]  Yuliang Zhang,et al.  Controlling the Synthesis of CoO Nanocrystals with Various Morphologies , 2008 .

[52]  Wei Chen,et al.  Synthesis and characterization of ultrathin WO3 nanodisks utilizing long-chain poly(ethylene glycol). , 2006, The journal of physical chemistry. B.