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Title: Mechanistic insights into chemical and photochemical transformations of bismuth vanadate photoanodes

Journal Article · · Nature Communications
DOI:https://doi.org/10.1038/ncomms12012· OSTI ID:1379503
 [1];  [2];  [3];  [4];  [2];  [2];  [5];  [2];  [6];  [7];  [6];  [6];  [4];  [4];  [2];  [8];  [2]
  1. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Joint Center for Artificial Photosynthesis, Chemical Sciences Division
  2. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Joint Center for Artificial Photosynthesis, Chemical Sciences Division
  3. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Joint Center for Artificial Photosynthesis; Technical Univ. of Munich (Germany). Walter Schottky Inst. and Physics Dept.
  4. California Inst. of Technology (CalTech), Pasadena, CA (United States). Joint Center for Artificial Photosynthesis, Division of Chemistry and Chemical Engineering
  5. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Molecular Foundry, Materials Sciences Division
  6. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Joint Center for Artificial Photosynthesis, Materials Sciences Division
  7. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Materials Sciences Division
  8. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Joint Center for Artificial Photosynthesis, Energy Technologies Area; Univ. of California, Berkeley, CA (United States). Materials Science and Engineering

Artificial photosynthesis relies on the availability of semiconductors that are chemically stable and can efficiently capture solar energy. Although metal oxide semiconductors have been investigated for their promise to resist oxidative attack, materials in this class can suffer from chemical and photochemical instability. Here we present a methodology for evaluating corrosion mechanisms and apply it to bismuth vanadate, a state-of-the-art photoanode. Analysis of changing morphology and composition under solar water splitting conditions reveals chemical instabilities that are not predicted from thermodynamic considerations of stable solid oxide phases, as represented by the Pourbaix diagram for the system. Computational modelling indicates that photoexcited charge carriers accumulated at the surface destabilize the lattice, and that self-passivation by formation of a chemically stable surface phase is kinetically hindered. Although chemical stability of metal oxides cannot be assumed, insight into corrosion mechanisms aids development of protection strategies and discovery of semiconductors with improved stability.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC02-05CH11231; SC0004993
OSTI ID:
1379503
Journal Information:
Nature Communications, Vol. 7; ISSN 2041-1723
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 185 works
Citation information provided by
Web of Science

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PbTiO 3 as Electron-Selective Layer for High-Efficiency Perovskite Solar Cells: Enhanced Electron Extraction via Tunable Ferroelectric Polarization journal November 2018
Nanostructured β‐Bi 2 O 3 Fractals on Carbon Fibers for Highly Selective CO 2 Electroreduction to Formate journal October 2019
Elaborately Modified BiVO 4 Photoanodes for Solar Water Splitting journal December 2018
Rational Design of 3D Hierarchical Ternary SnO 2 /TiO 2 /BiVO 4 Arrays Photoanode toward Efficient Photoelectrochemical Performance journal December 2019
Photocatalysis: Basic Principles, Diverse Forms of Implementations and Emerging Scientific Opportunities journal August 2017
Bismuth Tantalum Oxyhalogen: A Promising Candidate Photocatalyst for Solar Water Splitting journal September 2017
Design and Fabrication of a Precious Metal-Free Tandem Core-Shell p + n Si/W-Doped BiVO 4 Photoanode for Unassisted Water Splitting journal August 2017
Recent Advances and Emerging Trends in Photo-Electrochemical Solar Energy Conversion journal November 2018
Efficient BiVO 4 Photoanodes by Postsynthetic Treatment: Remarkable Improvements in Photoelectrochemical Performance from Facile Borate Modification journal December 2019
Atomic Layer Deposition of Space‐Efficient SnO 2 Underlayers for BiVO 4 Host–Guest Architectures for Photoassisted Water Splitting journal November 2018
High Water Oxidation Performance of W-Doped BiVO 4 Photoanodes Coupled to V 2 O 5 Rods as a Photoabsorber and Hole Carrier journal May 2018
Cobalt–phosphate-modified Mo:BiVO4 mesoporous photoelectrodes for enhanced photoelectrochemical water splitting journal May 2019
Fabrication of Bismuth Vanadate (BiVO4) Nanoparticles by a Facile Route journal September 2019
Organic-free synthesis of {001} facet dominated BiOBr nanosheets for selective photoreduction of CO 2 to CO journal January 2017
Synthesis of a monoclinic BiVO 4 nanorod array as the photocatalyst for efficient photoelectrochemical water oxidation journal January 2017
Progress on ternary oxide-based photoanodes for use in photoelectrochemical cells for solar water splitting journal January 2019
Thin film photoelectrodes for solar water splitting journal January 2019
Ultrathin Fe-NiO nanosheets as catalytic charge reservoirs for a planar Mo-doped BiVO 4 photoanode journal January 2018
Transient photocurrents on catalyst-modified n-Si photoelectrodes: insight from dual-working electrode photoelectrochemistry journal January 2018
Interface engineering for light-driven water oxidation: unravelling the passivating and catalytic mechanism in BiVO 4 overlayers journal January 2019
A theoretical study on the surface and interfacial properties of Ni 3 P for the hydrogen evolution reaction journal January 2018
Highly conformal deposition of ultrathin cobalt acetate on a bismuth vanadate nanostructure for solar water splitting journal January 2019
Advanced chemical stability diagrams to predict the formation of complex zinc compounds in a chloride environment journal January 2019
Demonstration of a 50 cm 2 BiVO 4 tandem photoelectrochemical-photovoltaic water splitting device journal January 2019
Effects of yttrium, ytterbium with tungsten co-doping on the light absorption and charge transport properties of bismuth vanadate photoanodes to achieve superior photoelectrochemical water splitting journal January 2020
Recombinant Escherichia coli as a biofactory for various single- and multi-element nanomaterials journal May 2018
Degradation in photoelectrochemical devices: review with an illustrative case study journal February 2017
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Efficient BiVO 4 Photoanodes by Postsynthetic Treatment: Remarkable Improvements in Photoelectrochemical Performance from Facile Borate Modification journal November 2019
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Atomic Layer Deposition of Space‐Efficient SnO 2 Underlayers for BiVO 4 Host–Guest Architectures for Photoassisted Water Splitting journal November 2018
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Nanoscale imaging of charge carrier transport in water splitting photoanodes journal July 2018
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