Hydrogen plasma reduced black [Formula presented] nanowires for enhanced photoelectrochemical water-splitting

Zhangliu Tian; Huolei Cui; Guilian Zhu; Wenli Zhao; Ji Jian Xu; Feng Shao; Jianqiao He; Fuqiang Huang

doi:10.1016/j.jpowsour.2016.06.074

Hydrogen plasma reduced black [Formula presented] nanowires for enhanced photoelectrochemical water-splitting

Zhangliu Tian, Huolei Cui, Guilian Zhu, Wenli Zhao, Ji Jian Xu, Feng Shao, Jianqiao He, Fuqiang Huang^*

^*Corresponding author for this work

Physical Sciences and Engineering

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

60 Scopus citations

Abstract

Black TiO₂ with various nanostructures and phase constitutions have been reported to exhibit excellent photocatalytic and photoelectrochemical (PEC) performance. Here, we report the fabrication of black nanostructured TiO₂[Formula presented] through hydrogen plasma assisted reduction and its enhanced PEC properties for the first time. Both the obtained TiO₂[Formula presented] and black TiO₂[Formula presented] are single crystalline nanowires, while the black TiO₂[Formula presented] samples exhibit much stronger visible and infrared light absorption. The optimal black TiO₂[Formula presented] sample obtained by hydrogen plasma treatment at 425 °C yields a photocurrent density of 0.85 mA cm⁻², a rather low onset potential of −0.937 V_Ag/AgCl and a high applied bias photon-to-current efficiency (ABPE) of 0.363%, which is far superior to the TiO₂[Formula presented] (0.15 mA cm⁻² photocurrent, −0.917 V_Ag/AgCl onset potential and 0.138% ABPE). The significantly enhanced PEC performance of the black TiO₂[Formula presented] is ascribed to the introduction of moderate surface oxygen vacancies. These results indicate that the black TiO₂[Formula presented] is a promising material for PEC application and solar energy utilization.

Original language	English (US)
Pages (from-to)	697-705
Number of pages	9
Journal	Journal of Power Sources
Volume	325
DOIs	https://doi.org/10.1016/j.jpowsour.2016.06.074
State	Published - Sep 1 2016

Bibliographical note

Funding Information:
Financial supports from National Natural Science Foundation of China (Grant nos. 91122034, 51121064, 61376056 and 51402336) and the Science and Technology Commission of Shanghai Municipality (Grant nos. 13JC1405700 and 14YF1406500).

Publisher Copyright:
© 2016

Keywords

Black TiO[Formula presented]
Hydrogen plasma
Oxygen vacancies
Photocurrent density
Photoelectrochemical performance

ASJC Scopus subject areas

Renewable Energy, Sustainability and the Environment
Energy Engineering and Power Technology
Physical and Theoretical Chemistry
Electrical and Electronic Engineering

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.jpowsour.2016.06.074

Cite this

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title = "Hydrogen plasma reduced black [Formula presented] nanowires for enhanced photoelectrochemical water-splitting",

abstract = "Black TiO2 with various nanostructures and phase constitutions have been reported to exhibit excellent photocatalytic and photoelectrochemical (PEC) performance. Here, we report the fabrication of black nanostructured TiO2[Formula presented] through hydrogen plasma assisted reduction and its enhanced PEC properties for the first time. Both the obtained TiO2[Formula presented] and black TiO2[Formula presented] are single crystalline nanowires, while the black TiO2[Formula presented] samples exhibit much stronger visible and infrared light absorption. The optimal black TiO2[Formula presented] sample obtained by hydrogen plasma treatment at 425 °C yields a photocurrent density of 0.85 mA cm−2, a rather low onset potential of −0.937 VAg/AgCl and a high applied bias photon-to-current efficiency (ABPE) of 0.363%, which is far superior to the TiO2[Formula presented] (0.15 mA cm−2 photocurrent, −0.917 VAg/AgCl onset potential and 0.138% ABPE). The significantly enhanced PEC performance of the black TiO2[Formula presented] is ascribed to the introduction of moderate surface oxygen vacancies. These results indicate that the black TiO2[Formula presented] is a promising material for PEC application and solar energy utilization.",

keywords = "Black TiO[Formula presented], Hydrogen plasma, Oxygen vacancies, Photocurrent density, Photoelectrochemical performance",

author = "Zhangliu Tian and Huolei Cui and Guilian Zhu and Wenli Zhao and Xu, {Ji Jian} and Feng Shao and Jianqiao He and Fuqiang Huang",

note = "Funding Information: Financial supports from National Natural Science Foundation of China (Grant nos. 91122034, 51121064, 61376056 and 51402336) and the Science and Technology Commission of Shanghai Municipality (Grant nos. 13JC1405700 and 14YF1406500). Publisher Copyright: {\textcopyright} 2016",

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T1 - Hydrogen plasma reduced black [Formula presented] nanowires for enhanced photoelectrochemical water-splitting

AU - Tian, Zhangliu

AU - Cui, Huolei

AU - Zhu, Guilian

AU - Zhao, Wenli

AU - Xu, Ji Jian

AU - Shao, Feng

AU - He, Jianqiao

AU - Huang, Fuqiang

N1 - Funding Information: Financial supports from National Natural Science Foundation of China (Grant nos. 91122034, 51121064, 61376056 and 51402336) and the Science and Technology Commission of Shanghai Municipality (Grant nos. 13JC1405700 and 14YF1406500). Publisher Copyright: © 2016

PY - 2016/9/1

Y1 - 2016/9/1

N2 - Black TiO2 with various nanostructures and phase constitutions have been reported to exhibit excellent photocatalytic and photoelectrochemical (PEC) performance. Here, we report the fabrication of black nanostructured TiO2[Formula presented] through hydrogen plasma assisted reduction and its enhanced PEC properties for the first time. Both the obtained TiO2[Formula presented] and black TiO2[Formula presented] are single crystalline nanowires, while the black TiO2[Formula presented] samples exhibit much stronger visible and infrared light absorption. The optimal black TiO2[Formula presented] sample obtained by hydrogen plasma treatment at 425 °C yields a photocurrent density of 0.85 mA cm−2, a rather low onset potential of −0.937 VAg/AgCl and a high applied bias photon-to-current efficiency (ABPE) of 0.363%, which is far superior to the TiO2[Formula presented] (0.15 mA cm−2 photocurrent, −0.917 VAg/AgCl onset potential and 0.138% ABPE). The significantly enhanced PEC performance of the black TiO2[Formula presented] is ascribed to the introduction of moderate surface oxygen vacancies. These results indicate that the black TiO2[Formula presented] is a promising material for PEC application and solar energy utilization.

AB - Black TiO2 with various nanostructures and phase constitutions have been reported to exhibit excellent photocatalytic and photoelectrochemical (PEC) performance. Here, we report the fabrication of black nanostructured TiO2[Formula presented] through hydrogen plasma assisted reduction and its enhanced PEC properties for the first time. Both the obtained TiO2[Formula presented] and black TiO2[Formula presented] are single crystalline nanowires, while the black TiO2[Formula presented] samples exhibit much stronger visible and infrared light absorption. The optimal black TiO2[Formula presented] sample obtained by hydrogen plasma treatment at 425 °C yields a photocurrent density of 0.85 mA cm−2, a rather low onset potential of −0.937 VAg/AgCl and a high applied bias photon-to-current efficiency (ABPE) of 0.363%, which is far superior to the TiO2[Formula presented] (0.15 mA cm−2 photocurrent, −0.917 VAg/AgCl onset potential and 0.138% ABPE). The significantly enhanced PEC performance of the black TiO2[Formula presented] is ascribed to the introduction of moderate surface oxygen vacancies. These results indicate that the black TiO2[Formula presented] is a promising material for PEC application and solar energy utilization.

KW - Black TiO[Formula presented]

KW - Hydrogen plasma

KW - Oxygen vacancies

KW - Photocurrent density

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VL - 325

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JF - Journal of Power Sources

ER -

Hydrogen plasma reduced black [Formula presented] nanowires for enhanced photoelectrochemical water-splitting

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

UN SDGs

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