Novel g-C3N4/CoO Nanocomposites with Significantly Enhanced Visible-Light Photocatalytic Activity for H2 Evolution

Zhiyong Mao; Jingjing Chen; Yanfang Yang; Dajian Wang; Lijian Bie; Bradley D. Fahlman

doi:10.1021/acsami.7b00370

Novel g-C₃N₄/CoO Nanocomposites with Significantly Enhanced Visible-Light Photocatalytic Activity for H₂ Evolution

Zhiyong Mao, Jingjing Chen, Yanfang Yang, Dajian Wang, Lijian Bie, Bradley D. Fahlman

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254 Scopus citations

Abstract

Novel g-C₃N₄/CoO nanocomposite application for photocatalytic H₂ evolution were designed and fabricated for the first time in this work. The structure and morphology of g-C₃N₄/CoO were investigated by a wide range of characterization methods. The obtained g-C₃N₄/CoO composites exhibited more-efficient utilization of solar energy than pure g-C₃N₄ did, resulting in higher photocatalytic activity for H₂ evolution. The optimum photoactivity in H₂ evolution under visible-light irradiation for g-C₃N₄/CoO composites with a CoO mass content of 0.5 wt % (651.3 μmol h^-1 g^-1) was up to 3 times as high as that of pure g-C₃N₄ (220.16 μmol h^-1 g^-1). The remarkably increased photocatalytic performance of g-C₃N₄/CoO composites was mainly attributed to the synergistic effect of the junction or interface formed between g-C₃N₄ and CoO.

Original language	English
Pages (from-to)	12427-12435
Number of pages	9
Journal	ACS Applied Materials and Interfaces
Volume	9
Issue number	14
DOIs	https://doi.org/10.1021/acsami.7b00370
State	Published - Apr 12 2017

Keywords

H evolution
co-catalyst
g-CN/CoO nanocomposite
heterostructure
photocatalyst
visible light

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10.1021/acsami.7b00370

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title = "Novel g-C3N4/CoO Nanocomposites with Significantly Enhanced Visible-Light Photocatalytic Activity for H2 Evolution",

abstract = "Novel g-C3N4/CoO nanocomposite application for photocatalytic H2 evolution were designed and fabricated for the first time in this work. The structure and morphology of g-C3N4/CoO were investigated by a wide range of characterization methods. The obtained g-C3N4/CoO composites exhibited more-efficient utilization of solar energy than pure g-C3N4 did, resulting in higher photocatalytic activity for H2 evolution. The optimum photoactivity in H2 evolution under visible-light irradiation for g-C3N4/CoO composites with a CoO mass content of 0.5 wt % (651.3 μmol h-1 g-1) was up to 3 times as high as that of pure g-C3N4 (220.16 μmol h-1 g-1). The remarkably increased photocatalytic performance of g-C3N4/CoO composites was mainly attributed to the synergistic effect of the junction or interface formed between g-C3N4 and CoO.",

keywords = "H evolution, co-catalyst, g-CN/CoO nanocomposite, heterostructure, photocatalyst, visible light",

author = "Zhiyong Mao and Jingjing Chen and Yanfang Yang and Dajian Wang and Lijian Bie and Fahlman, {Bradley D.}",

note = "Funding Information: We gratefully acknowledge the financial support by the National Natural Science Foundation of China (nos. 51102265 and 50872091), the Program of Discipline Leader of Colleges and Universities (Tianjin, China), and the Foreign Experts Thousand Talents Program (Tianjin, China). Publisher Copyright: {\textcopyright} 2017 American Chemical Society.",

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AU - Mao, Zhiyong

AU - Chen, Jingjing

AU - Yang, Yanfang

AU - Wang, Dajian

AU - Bie, Lijian

AU - Fahlman, Bradley D.

N1 - Funding Information: We gratefully acknowledge the financial support by the National Natural Science Foundation of China (nos. 51102265 and 50872091), the Program of Discipline Leader of Colleges and Universities (Tianjin, China), and the Foreign Experts Thousand Talents Program (Tianjin, China). Publisher Copyright: © 2017 American Chemical Society.

PY - 2017/4/12

Y1 - 2017/4/12

N2 - Novel g-C3N4/CoO nanocomposite application for photocatalytic H2 evolution were designed and fabricated for the first time in this work. The structure and morphology of g-C3N4/CoO were investigated by a wide range of characterization methods. The obtained g-C3N4/CoO composites exhibited more-efficient utilization of solar energy than pure g-C3N4 did, resulting in higher photocatalytic activity for H2 evolution. The optimum photoactivity in H2 evolution under visible-light irradiation for g-C3N4/CoO composites with a CoO mass content of 0.5 wt % (651.3 μmol h-1 g-1) was up to 3 times as high as that of pure g-C3N4 (220.16 μmol h-1 g-1). The remarkably increased photocatalytic performance of g-C3N4/CoO composites was mainly attributed to the synergistic effect of the junction or interface formed between g-C3N4 and CoO.

AB - Novel g-C3N4/CoO nanocomposite application for photocatalytic H2 evolution were designed and fabricated for the first time in this work. The structure and morphology of g-C3N4/CoO were investigated by a wide range of characterization methods. The obtained g-C3N4/CoO composites exhibited more-efficient utilization of solar energy than pure g-C3N4 did, resulting in higher photocatalytic activity for H2 evolution. The optimum photoactivity in H2 evolution under visible-light irradiation for g-C3N4/CoO composites with a CoO mass content of 0.5 wt % (651.3 μmol h-1 g-1) was up to 3 times as high as that of pure g-C3N4 (220.16 μmol h-1 g-1). The remarkably increased photocatalytic performance of g-C3N4/CoO composites was mainly attributed to the synergistic effect of the junction or interface formed between g-C3N4 and CoO.

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Novel g-C₃N₄/CoO Nanocomposites with Significantly Enhanced Visible-Light Photocatalytic Activity for H₂ Evolution

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Keywords

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