An Efficient, Full Spectrum-Driven H2 Evolution Z-Scheme Co2P/CdS Photocatalyst with Co-S Bonds

Nan Li; Yunxuan Ding; Jiaojiao Wu; Zhijie Zhao; Xitao Li; Yan-Zhen Zheng; Meilan Huang; Xia Tao

doi:10.1021/acsami.9b03965

An Efficient, Full Spectrum-Driven H2 Evolution Z-Scheme Co2P/CdS Photocatalyst with Co-S Bonds

Nan Li, Yunxuan Ding, Jiaojiao Wu, Zhijie Zhao, Xitao Li, Yan-Zhen Zheng, Meilan Huang, Xia Tao

School of Chemistry and Chemical Engineering

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

97 Citations (Scopus)

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Abstract

Exploring high efficiency, low cost and stable photocatalysts that enable full solar spectrum (UV, visible and near-infrared) utilization for photocatalytic hydrogen generation still faces huge challenge. Herein, a Co2P/CdS Z-scheme photocatalyst without noble metal is rationally fabricated to achieve ultrabroad UV-Vis-NIR-harvesting. Compared to Pt/CdS, CdS and Co2P, the optimized Co2P/CdS exhibits much more outstanding performance with the HER rate of 262.16, 66.98 and 3.93 mmol/g/h under solar, visible (780 nm > λ > 420 nm) and NIR (λ > 780 nm) light, respectively. Particularly, 10% Co2P/CdS displays a prominent AQE value of 2.26% at 700 nm. The Z-scheme transform route can effectively enhance the separation of charge carriers in Co2P/CdS for UV-Vis-driven H2 evolution reaction (HER), as confirmed by PL and photoelectrochemical measurements. More importantly, the Co-S bonds at the interface demonstrated by FTIR, Raman (mapping), XPS and density functional theory (DFT) calculations can act as “bridge” for charge transfer, thereby enhancing the full spectrum-driven H2 evolution. To our best knowledge, this is a rare research on full spectrum-driven photocatalytic HER without noble metal.

Original language	English
Journal	ACS Applied Materials and Interfaces
Early online date	04 Jun 2019
DOIs	https://doi.org/10.1021/acsami.9b03965
Publication status	Early online date - 04 Jun 2019

Bibliographical note

This is in interdisciplinary research in collaboration with Chemical Engineers from Beijing University of Chemical Technology.

It was conducted by my PhD student and a visiting PhD student in my group.

It was published in ACS Applied Materials and Interfaces, which has an impact factor of 9.2 and CiteScore of 14.4

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10.1021/acsami.9b03965Licence: Unspecified

Revised Manuscript(1)Accepted author manuscript, 17.4 MB

A Density Functional Theory Study on the Rational Design of Heterogeneous Catalysis
Ding, Y. (Author), Hu, P. (Supervisor), Jul 2020
Student thesis: Doctoral Thesis › Doctor of Philosophy

Cite this

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title = "An Efficient, Full Spectrum-Driven H2 Evolution Z-Scheme Co2P/CdS Photocatalyst with Co-S Bonds",

abstract = "Exploring high efficiency, low cost and stable photocatalysts that enable full solar spectrum (UV, visible and near-infrared) utilization for photocatalytic hydrogen generation still faces huge challenge. Herein, a Co2P/CdS Z-scheme photocatalyst without noble metal is rationally fabricated to achieve ultrabroad UV-Vis-NIR-harvesting. Compared to Pt/CdS, CdS and Co2P, the optimized Co2P/CdS exhibits much more outstanding performance with the HER rate of 262.16, 66.98 and 3.93 mmol/g/h under solar, visible (780 nm > λ > 420 nm) and NIR (λ > 780 nm) light, respectively. Particularly, 10% Co2P/CdS displays a prominent AQE value of 2.26% at 700 nm. The Z-scheme transform route can effectively enhance the separation of charge carriers in Co2P/CdS for UV-Vis-driven H2 evolution reaction (HER), as confirmed by PL and photoelectrochemical measurements. More importantly, the Co-S bonds at the interface demonstrated by FTIR, Raman (mapping), XPS and density functional theory (DFT) calculations can act as “bridge” for charge transfer, thereby enhancing the full spectrum-driven H2 evolution. To our best knowledge, this is a rare research on full spectrum-driven photocatalytic HER without noble metal.",

author = "Nan Li and Yunxuan Ding and Jiaojiao Wu and Zhijie Zhao and Xitao Li and Yan-Zhen Zheng and Meilan Huang and Xia Tao",

note = "This is in interdisciplinary research in collaboration with Chemical Engineers from Beijing University of Chemical Technology. It was conducted by my PhD student and a visiting PhD student in my group. It was published in ACS Applied Materials and Interfaces, which has an impact factor of 9.2 and CiteScore of 14.4 ",

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AU - Ding, Yunxuan

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AU - Zhao, Zhijie

AU - Li, Xitao

AU - Zheng, Yan-Zhen

AU - Huang, Meilan

AU - Tao, Xia

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Y1 - 2019/6/4

N2 - Exploring high efficiency, low cost and stable photocatalysts that enable full solar spectrum (UV, visible and near-infrared) utilization for photocatalytic hydrogen generation still faces huge challenge. Herein, a Co2P/CdS Z-scheme photocatalyst without noble metal is rationally fabricated to achieve ultrabroad UV-Vis-NIR-harvesting. Compared to Pt/CdS, CdS and Co2P, the optimized Co2P/CdS exhibits much more outstanding performance with the HER rate of 262.16, 66.98 and 3.93 mmol/g/h under solar, visible (780 nm > λ > 420 nm) and NIR (λ > 780 nm) light, respectively. Particularly, 10% Co2P/CdS displays a prominent AQE value of 2.26% at 700 nm. The Z-scheme transform route can effectively enhance the separation of charge carriers in Co2P/CdS for UV-Vis-driven H2 evolution reaction (HER), as confirmed by PL and photoelectrochemical measurements. More importantly, the Co-S bonds at the interface demonstrated by FTIR, Raman (mapping), XPS and density functional theory (DFT) calculations can act as “bridge” for charge transfer, thereby enhancing the full spectrum-driven H2 evolution. To our best knowledge, this is a rare research on full spectrum-driven photocatalytic HER without noble metal.

AB - Exploring high efficiency, low cost and stable photocatalysts that enable full solar spectrum (UV, visible and near-infrared) utilization for photocatalytic hydrogen generation still faces huge challenge. Herein, a Co2P/CdS Z-scheme photocatalyst without noble metal is rationally fabricated to achieve ultrabroad UV-Vis-NIR-harvesting. Compared to Pt/CdS, CdS and Co2P, the optimized Co2P/CdS exhibits much more outstanding performance with the HER rate of 262.16, 66.98 and 3.93 mmol/g/h under solar, visible (780 nm > λ > 420 nm) and NIR (λ > 780 nm) light, respectively. Particularly, 10% Co2P/CdS displays a prominent AQE value of 2.26% at 700 nm. The Z-scheme transform route can effectively enhance the separation of charge carriers in Co2P/CdS for UV-Vis-driven H2 evolution reaction (HER), as confirmed by PL and photoelectrochemical measurements. More importantly, the Co-S bonds at the interface demonstrated by FTIR, Raman (mapping), XPS and density functional theory (DFT) calculations can act as “bridge” for charge transfer, thereby enhancing the full spectrum-driven H2 evolution. To our best knowledge, this is a rare research on full spectrum-driven photocatalytic HER without noble metal.

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An Efficient, Full Spectrum-Driven H2 Evolution Z-Scheme Co2P/CdS Photocatalyst with Co-S Bonds

Abstract

Bibliographical note

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Student theses

A Density Functional Theory Study on the Rational Design of Heterogeneous Catalysis

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