Photo-induced <i>in-situ</i> synthesis of Cu<sub>2</sub>O@C nanocomposite for efficient photocatalytic evolution of hydrogen

LI Na; MAO Shuhong; YAN Wenjun; ZHANG Jing

doi:10.1016/S1872-5813(23)60400-1

Volume 52 Issue 5

May 2024

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Article Navigation > Journal of Fuel Chemistry and Technology > 2024 > 52(5): 698-706

LI Na, MAO Shuhong, YAN Wenjun, ZHANG Jing. Photo-induced in-situ synthesis of Cu2O@C nanocomposite for efficient photocatalytic evolution of hydrogen[J]. Journal of Fuel Chemistry and Technology, 2024, 52(5): 698-706. doi: 10.1016/S1872-5813(23)60400-1

Citation:

LI Na, MAO Shuhong, YAN Wenjun, ZHANG Jing. Photo-induced in-situ synthesis of Cu₂O@C nanocomposite for efficient photocatalytic evolution of hydrogen[J]. Journal of Fuel Chemistry and Technology, 2024, 52(5): 698-706. doi: 10.1016/S1872-5813(23)60400-1

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Photo-induced in-situ synthesis of Cu₂O@C nanocomposite for efficient photocatalytic evolution of hydrogen

doi: 10.1016/S1872-5813(23)60400-1

LI Na^{1, 2
,},
MAO Shuhong^1
,,
YAN Wenjun^{2
,
,},
ZHANG Jing^{1
,
,}

1.
School of Chemical Engineering and Technology, Taiyuan University of Science and Technology, Taiyuan 030024, China
2.
State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China

Funds: The project was supported by the Ph.D. Scientific Research Foundation of Taiyuan University of Science and Technology (20222084), the Foundation of Outstanding Doctoral Research in Shanxi (Jin) (20232028), the National Natural Science Foundation of China (22002181), the Shanxi Province Scientific and Technological Cooperation and Exchange Special Foundation (202204041101029) and the Shanxi Province Basic Research Program (Free Exploration 20210302123214).

Received Date: 2023-10-10
Accepted Date: 2023-11-07
Rev Recd Date: 2023-11-06

Available Online: 2023-11-21

Publish Date: 2024-05-01

Abstract

Abstract

Cuprous oxide (Cu₂O) is an ideal visible light catalyst owing to its narrow band gap, environmental benignity and abundant storage; however, the fast recombination of photogenerated charge carriers and poor stability of Cu₂O has impeded its application in photocatalysis. Herein, we demonstrate that Cu₂O@C nanocomposite can spontaneously evolve from a methanol aqueous solution containing cupric ions under the induction of irradiation. Compared with the traditional carbon coating method, the Cu₂O@C nanocomposite obtained by the photo-induced in-situ synthesis can reserve superior original characteristics of the semiconductor under mild reaction conditions, promote the charge transfer and enhance the separation efficiency of charge carriers; in addition, the carbon shells can also effectively prevent Cu₂O from photo-corrosion. As a result, the Cu₂O@C nanocomposite exhibits excellent photocatalytic activity in the hydrogen evolution in comparison with the Cu₂O particles; the H₂ evolution rate over the Cu₂O@C nanocomposite reaches 1.28 mmol/(g·h) under visible light, compared with the value of 0.065 mmol/(g·h) over Cu₂O. Moreover, the Cu₂O@C nanocomposite displays good cycle stability, viz., without any deactivation in the catalytic activity after five cycles.
- Cu₂O@C,
- photo-induced in-situ synthesis,
- photocatalytic hydrogen evolution

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References(35)

References

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