A new photocatalyst based on Co(CO3)0.5(OH)·0.11H2O/Bi2WO6 nanocomposites for high-efficiency cocatalyst-free O2 evolution

Bin He; Huanhuan Liu; Zheng Lin; Lei Yan; Jiqiang Ning; Yijun Zhong; Changcheng Zheng; Ziyang Zhang; Yong Hu

doi:10.1016/j.cej.2018.11.094

A new photocatalyst based on Co(CO₃)_0.5(OH)·0.11H₂O/Bi₂WO₆ nanocomposites for high-efficiency cocatalyst-free O₂ evolution

Bin He, Huanhuan Liu, Zheng Lin, Lei Yan, Jiqiang Ning, Yijun Zhong, Changcheng Zheng, Ziyang Zhang, Yong Hu^*

^*Corresponding author for this work

School of Mathematics and Physics

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

62 Citations (Scopus)

Abstract

The practical application of photocatalytic water splitting is essentially limited by the slow kinetic nature of the water oxidation process. Therefore, it is highly desirable but challenging to explore a low-cost and high-efficiency water oxidation catalyst for the aim of commercialization and industrialization. We herein report the first-time synthesis of a novel and high-efficiency visible-light-driven photocatalyst composed of flower-like Co(CO₃)_0.5(OH)·0.11H₂O (CCO) nanowires and Bi₂WO₆ (BWO) nanosheets, i.e. CCO/BWO nanocomposite, via a facile hydrothermal method. Without utilizing any additional cocatalyst, the composite of CCO/BWO in 30% weight ratio exhibits extraordinarily high photoactivity and photostability towards O₂ evolution, achieving an average O₂ generation rate of 953 µmol h⁻¹ g⁻¹ under visible-light irradiation (λ > 420 nm).

Original language	English
Pages (from-to)	924-932
Number of pages	9
Journal	Chemical Engineering Journal
Volume	359
DOIs	https://doi.org/10.1016/j.cej.2018.11.094
Publication status	Published - 1 Mar 2019

Keywords

BiWO
Co(CO)(OH)·0.11HO
Cocatalyst-free
Nanocomposite
Photocatalytic O evolution

UN SDGs

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

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10.1016/j.cej.2018.11.094

Cite this

@article{b48c4e5b35ba4af5936081195dbc6da8,

title = "A new photocatalyst based on Co(CO3)0.5(OH)·0.11H2O/Bi2WO6 nanocomposites for high-efficiency cocatalyst-free O2 evolution",

abstract = "The practical application of photocatalytic water splitting is essentially limited by the slow kinetic nature of the water oxidation process. Therefore, it is highly desirable but challenging to explore a low-cost and high-efficiency water oxidation catalyst for the aim of commercialization and industrialization. We herein report the first-time synthesis of a novel and high-efficiency visible-light-driven photocatalyst composed of flower-like Co(CO3)0.5(OH)·0.11H2O (CCO) nanowires and Bi2WO6 (BWO) nanosheets, i.e. CCO/BWO nanocomposite, via a facile hydrothermal method. Without utilizing any additional cocatalyst, the composite of CCO/BWO in 30% weight ratio exhibits extraordinarily high photoactivity and photostability towards O2 evolution, achieving an average O2 generation rate of 953 µmol h−1 g−1 under visible-light irradiation (λ > 420 nm).",

keywords = "BiWO, Co(CO)(OH)·0.11HO, Cocatalyst-free, Nanocomposite, Photocatalytic O evolution",

author = "Bin He and Huanhuan Liu and Zheng Lin and Lei Yan and Jiqiang Ning and Yijun Zhong and Changcheng Zheng and Ziyang Zhang and Yong Hu",

note = "Publisher Copyright: {\textcopyright} 2018 Elsevier B.V.",

year = "2019",

month = mar,

day = "1",

doi = "10.1016/j.cej.2018.11.094",

language = "English",

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T1 - A new photocatalyst based on Co(CO3)0.5(OH)·0.11H2O/Bi2WO6 nanocomposites for high-efficiency cocatalyst-free O2 evolution

AU - He, Bin

AU - Liu, Huanhuan

AU - Lin, Zheng

AU - Yan, Lei

AU - Ning, Jiqiang

AU - Zhong, Yijun

AU - Zheng, Changcheng

AU - Zhang, Ziyang

AU - Hu, Yong

PY - 2019/3/1

Y1 - 2019/3/1

N2 - The practical application of photocatalytic water splitting is essentially limited by the slow kinetic nature of the water oxidation process. Therefore, it is highly desirable but challenging to explore a low-cost and high-efficiency water oxidation catalyst for the aim of commercialization and industrialization. We herein report the first-time synthesis of a novel and high-efficiency visible-light-driven photocatalyst composed of flower-like Co(CO3)0.5(OH)·0.11H2O (CCO) nanowires and Bi2WO6 (BWO) nanosheets, i.e. CCO/BWO nanocomposite, via a facile hydrothermal method. Without utilizing any additional cocatalyst, the composite of CCO/BWO in 30% weight ratio exhibits extraordinarily high photoactivity and photostability towards O2 evolution, achieving an average O2 generation rate of 953 µmol h−1 g−1 under visible-light irradiation (λ > 420 nm).

AB - The practical application of photocatalytic water splitting is essentially limited by the slow kinetic nature of the water oxidation process. Therefore, it is highly desirable but challenging to explore a low-cost and high-efficiency water oxidation catalyst for the aim of commercialization and industrialization. We herein report the first-time synthesis of a novel and high-efficiency visible-light-driven photocatalyst composed of flower-like Co(CO3)0.5(OH)·0.11H2O (CCO) nanowires and Bi2WO6 (BWO) nanosheets, i.e. CCO/BWO nanocomposite, via a facile hydrothermal method. Without utilizing any additional cocatalyst, the composite of CCO/BWO in 30% weight ratio exhibits extraordinarily high photoactivity and photostability towards O2 evolution, achieving an average O2 generation rate of 953 µmol h−1 g−1 under visible-light irradiation (λ > 420 nm).

KW - BiWO

KW - Co(CO)(OH)·0.11HO

KW - Cocatalyst-free

KW - Nanocomposite

KW - Photocatalytic O evolution

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DO - 10.1016/j.cej.2018.11.094

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