Interfacial engineering of a zinc blende/wurtzite homojunction photocatalyst through hybridization with a cobalt phosphide co-catalyst for enhanced visible-light-driven photocatalytic H2 evolution

Yi Hao Chew; Boon Junn Ng; Xin Ying Kong; Lutfi Kurnianditia Putri; Jie Yinn Tang; Lling Lling Tan; Siang Piao Chai

doi:10.1039/c9se00800d

Interfacial engineering of a zinc blende/wurtzite homojunction photocatalyst through hybridization with a cobalt phosphide co-catalyst for enhanced visible-light-driven photocatalytic H₂ evolution

Yi Hao Chew, Boon Junn Ng, Xin Ying Kong, Lutfi Kurnianditia Putri, Jie Yinn Tang, Lling Lling Tan, Siang Piao Chai

Malaysia Sch of Engineering

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

8 Citations (Scopus)

Abstract

The incorporation of cobalt phosphide (CoP) as a noble-metal-free co-catalyst onto Zn_0.5Cd_0.5S with a unique zinc blende/wurtzite (ZB/WZ)-homojunction structure (ZCS) has resulted in significantly enhanced photocatalytic activity. The optimized sample, 3CoP-ZCS, yielded an exciting 20-times enhancement in H₂ evolution (∼4.9 mmol h^-1 g^-1) over pristine ZCS under visible light irradiation. The enhancement was ascribed to the synergistic interaction between the ZB/WZ homojunctions and the close heterojunction formed between ZCS and CoP. Besides being able to effectively suppress the electron-hole recombination, the introduction of CoP was also proven to boost the light absorption ability of the composite in the visible light region. Owing to these beneficial aspects, it was evident that CoP serves as an efficient co-catalyst for photocatalytic H₂ evolution.

Original language	English
Pages (from-to)	1822-1827
Number of pages	6
Journal	Sustainable Energy & Fuels
Volume	4
Issue number	4
DOIs	https://doi.org/10.1039/c9se00800d
Publication status	Published - Apr 2020

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Chew, Y. H., Ng, B. J., Kong, X. Y., Putri, L. K., Tang, J. Y., Tan, L. L., & Chai, S. P. (2020). Interfacial engineering of a zinc blende/wurtzite homojunction photocatalyst through hybridization with a cobalt phosphide co-catalyst for enhanced visible-light-driven photocatalytic H₂ evolution. Sustainable Energy & Fuels, 4(4), 1822-1827. https://doi.org/10.1039/c9se00800d

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title = "Interfacial engineering of a zinc blende/wurtzite homojunction photocatalyst through hybridization with a cobalt phosphide co-catalyst for enhanced visible-light-driven photocatalytic H2 evolution",

abstract = "The incorporation of cobalt phosphide (CoP) as a noble-metal-free co-catalyst onto Zn0.5Cd0.5S with a unique zinc blende/wurtzite (ZB/WZ)-homojunction structure (ZCS) has resulted in significantly enhanced photocatalytic activity. The optimized sample, 3CoP-ZCS, yielded an exciting 20-times enhancement in H2 evolution (∼4.9 mmol h-1 g-1) over pristine ZCS under visible light irradiation. The enhancement was ascribed to the synergistic interaction between the ZB/WZ homojunctions and the close heterojunction formed between ZCS and CoP. Besides being able to effectively suppress the electron-hole recombination, the introduction of CoP was also proven to boost the light absorption ability of the composite in the visible light region. Owing to these beneficial aspects, it was evident that CoP serves as an efficient co-catalyst for photocatalytic H2 evolution.",

author = "Chew, {Yi Hao} and Ng, {Boon Junn} and Kong, {Xin Ying} and Putri, {Lutfi Kurnianditia} and Tang, {Jie Yinn} and Tan, {Lling Lling} and Chai, {Siang Piao}",

note = "Funding Information: This work was supported by the Ministry of Education (MOE) Malaysia under the Fundamental Research Grant Scheme (FRGS) [ref. no.: FRGS/1/2016/TK02/MUSM/02/1]. Publisher Copyright: {\textcopyright} 2020 The Royal Society of Chemistry. Copyright: Copyright 2020 Elsevier B.V., All rights reserved.",

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doi = "10.1039/c9se00800d",

language = "English",

volume = "4",

pages = "1822--1827",

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Interfacial engineering of a zinc blende/wurtzite homojunction photocatalyst through hybridization with a cobalt phosphide co-catalyst for enhanced visible-light-driven photocatalytic H₂ evolution. / Chew, Yi Hao; Ng, Boon Junn; Kong, Xin Ying et al.

In: Sustainable Energy & Fuels, Vol. 4, No. 4, 04.2020, p. 1822-1827.

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

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AU - Kong, Xin Ying

AU - Putri, Lutfi Kurnianditia

AU - Tang, Jie Yinn

AU - Tan, Lling Lling

AU - Chai, Siang Piao

N1 - Funding Information: This work was supported by the Ministry of Education (MOE) Malaysia under the Fundamental Research Grant Scheme (FRGS) [ref. no.: FRGS/1/2016/TK02/MUSM/02/1]. Publisher Copyright: © 2020 The Royal Society of Chemistry. Copyright: Copyright 2020 Elsevier B.V., All rights reserved.

PY - 2020/4

Y1 - 2020/4

N2 - The incorporation of cobalt phosphide (CoP) as a noble-metal-free co-catalyst onto Zn0.5Cd0.5S with a unique zinc blende/wurtzite (ZB/WZ)-homojunction structure (ZCS) has resulted in significantly enhanced photocatalytic activity. The optimized sample, 3CoP-ZCS, yielded an exciting 20-times enhancement in H2 evolution (∼4.9 mmol h-1 g-1) over pristine ZCS under visible light irradiation. The enhancement was ascribed to the synergistic interaction between the ZB/WZ homojunctions and the close heterojunction formed between ZCS and CoP. Besides being able to effectively suppress the electron-hole recombination, the introduction of CoP was also proven to boost the light absorption ability of the composite in the visible light region. Owing to these beneficial aspects, it was evident that CoP serves as an efficient co-catalyst for photocatalytic H2 evolution.

AB - The incorporation of cobalt phosphide (CoP) as a noble-metal-free co-catalyst onto Zn0.5Cd0.5S with a unique zinc blende/wurtzite (ZB/WZ)-homojunction structure (ZCS) has resulted in significantly enhanced photocatalytic activity. The optimized sample, 3CoP-ZCS, yielded an exciting 20-times enhancement in H2 evolution (∼4.9 mmol h-1 g-1) over pristine ZCS under visible light irradiation. The enhancement was ascribed to the synergistic interaction between the ZB/WZ homojunctions and the close heterojunction formed between ZCS and CoP. Besides being able to effectively suppress the electron-hole recombination, the introduction of CoP was also proven to boost the light absorption ability of the composite in the visible light region. Owing to these beneficial aspects, it was evident that CoP serves as an efficient co-catalyst for photocatalytic H2 evolution.

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