Simultaneously efficient light absorption and charge separation in WO 3/BiVO4 Core/shell nanowire photoanode for photoelectrochemical water oxidation

Pratap M. Rao; Lili Cai; Chong Liu; In Sun Cho; Chi Hwan Lee; Jeffrey M. Weisse; Peidong Yang; Xiaolin Zheng

doi:10.1021/nl500022z

Simultaneously efficient light absorption and charge separation in WO ₃/BiVO₄ Core/shell nanowire photoanode for photoelectrochemical water oxidation

Pratap M. Rao, Lili Cai, Chong Liu, In Sun Cho, Chi Hwan Lee, Jeffrey M. Weisse, Peidong Yang, Xiaolin Zheng

Research output: Contribution to journal › Article › peer-review

Abstract

We report a scalably synthesized WO₃/BiVO₄ core/shell nanowire photoanode in which BiVO₄ is the primary light-absorber and WO₃ acts as an electron conductor. These core/shell nanowires achieve the highest product of light absorption and charge separation efficiencies among BiVO₄-based photoanodes to date and, even without an added catalyst, produce a photocurrent of 3.1 mA/cm² under simulated sunlight and an incident photon-to-current conversion efficiency of ∼60% at 300-450 nm, both at a potential of 1.23 V versus RHE.

Original language	English (US)
Pages (from-to)	1099-1105
Number of pages	7
Journal	Nano letters
Volume	14
Issue number	2
DOIs	https://doi.org/10.1021/nl500022z
State	Published - Feb 12 2014
Externally published	Yes

Keywords

BiVO
WO
core/shell nanowire
photoanode
photoelectrochemical
water splitting

ASJC Scopus subject areas

Bioengineering
General Chemistry
General Materials Science
Condensed Matter Physics
Mechanical Engineering

Online availability

10.1021/nl500022z

Library availability

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Cite this

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title = "Simultaneously efficient light absorption and charge separation in WO 3/BiVO4 Core/shell nanowire photoanode for photoelectrochemical water oxidation",

abstract = "We report a scalably synthesized WO3/BiVO4 core/shell nanowire photoanode in which BiVO4 is the primary light-absorber and WO3 acts as an electron conductor. These core/shell nanowires achieve the highest product of light absorption and charge separation efficiencies among BiVO4-based photoanodes to date and, even without an added catalyst, produce a photocurrent of 3.1 mA/cm2 under simulated sunlight and an incident photon-to-current conversion efficiency of ∼60% at 300-450 nm, both at a potential of 1.23 V versus RHE.",

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T1 - Simultaneously efficient light absorption and charge separation in WO 3/BiVO4 Core/shell nanowire photoanode for photoelectrochemical water oxidation

AU - Rao, Pratap M.

AU - Cai, Lili

AU - Liu, Chong

AU - Cho, In Sun

AU - Lee, Chi Hwan

AU - Weisse, Jeffrey M.

AU - Yang, Peidong

AU - Zheng, Xiaolin

PY - 2014/2/12

Y1 - 2014/2/12

N2 - We report a scalably synthesized WO3/BiVO4 core/shell nanowire photoanode in which BiVO4 is the primary light-absorber and WO3 acts as an electron conductor. These core/shell nanowires achieve the highest product of light absorption and charge separation efficiencies among BiVO4-based photoanodes to date and, even without an added catalyst, produce a photocurrent of 3.1 mA/cm2 under simulated sunlight and an incident photon-to-current conversion efficiency of ∼60% at 300-450 nm, both at a potential of 1.23 V versus RHE.

AB - We report a scalably synthesized WO3/BiVO4 core/shell nanowire photoanode in which BiVO4 is the primary light-absorber and WO3 acts as an electron conductor. These core/shell nanowires achieve the highest product of light absorption and charge separation efficiencies among BiVO4-based photoanodes to date and, even without an added catalyst, produce a photocurrent of 3.1 mA/cm2 under simulated sunlight and an incident photon-to-current conversion efficiency of ∼60% at 300-450 nm, both at a potential of 1.23 V versus RHE.

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KW - WO

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