High-efficiency carrier separation heterostructure improve the photocatalytic hydrogen production of sulfide

Longkai Pan; Hui Mei; Hongxia Liu; Haixi Pan; Xing Zhao; Zhipeng Jin; Gangqiang Zhu

doi:10.1016/j.jallcom.2019.153242

High-efficiency carrier separation heterostructure improve the photocatalytic hydrogen production of sulfide

Longkai Pan, Hui Mei, Hongxia Liu, Haixi Pan, Xing Zhao, Zhipeng Jin, Gangqiang Zhu

材料学院

科研成果: 期刊稿件 › 文章 › 同行评审

16 引用（Scopus）

摘要

Loading co-catalyst is one of the essential ways to strengthen the performance of photocatalyst. Here, a novel non-precious metal co-catalyst Ti₂C/TiO₂ was successfully synthesized and Zn_0.5Cd_0.5S nanoparticle grown on the surface of Ti₂C/TiO₂ equably. In our work, 0.01 g photocatalysts were used in photocatalytic activity measurement. Zn_0.5Cd_0.5S/Ti₂C/TiO₂ composite (2 wt% Ti₂C/TiO₂) exhibited the highest photocatalytic activity and the H₂ yield is 32.57 mmol/g⁻¹/h⁻¹ under visible light irradiation. The photoelectrochemical results reveal that Ti₂C/TiO₂ could improve the separation of the photo-induced carriers in Zn_0.5Cd_0.5S/Ti₂C/TiO₂ heterojunction. And DFT calculations demonstrate that the Gibbs free energy of oxygen-terminated Ti₂C and TiO₂ are much lower than that of Zn_0.5Cd_0.5S. Therefore, the Ti₂C/TiO₂ has an active impact on improving the H₂ production of Zn_0.5Cd_0.5S. This study provides a new way to explore the application of inexpensive co-catalysts on a large scale.

源语言	英语
文章编号	153242
期刊	Journal of Alloys and Compounds
卷	817
DOI	https://doi.org/10.1016/j.jallcom.2019.153242
出版状态	已出版 - 15 3月 2020

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title = "High-efficiency carrier separation heterostructure improve the photocatalytic hydrogen production of sulfide",

abstract = "Loading co-catalyst is one of the essential ways to strengthen the performance of photocatalyst. Here, a novel non-precious metal co-catalyst Ti2C/TiO2 was successfully synthesized and Zn0.5Cd0.5S nanoparticle grown on the surface of Ti2C/TiO2 equably. In our work, 0.01 g photocatalysts were used in photocatalytic activity measurement. Zn0.5Cd0.5S/Ti2C/TiO2 composite (2 wt% Ti2C/TiO2) exhibited the highest photocatalytic activity and the H2 yield is 32.57 mmol/g−1/h−1 under visible light irradiation. The photoelectrochemical results reveal that Ti2C/TiO2 could improve the separation of the photo-induced carriers in Zn0.5Cd0.5S/Ti2C/TiO2 heterojunction. And DFT calculations demonstrate that the Gibbs free energy of oxygen-terminated Ti2C and TiO2 are much lower than that of Zn0.5Cd0.5S. Therefore, the Ti2C/TiO2 has an active impact on improving the H2 production of Zn0.5Cd0.5S. This study provides a new way to explore the application of inexpensive co-catalysts on a large scale.",

keywords = "Co-catalyst, H production, Photocatalyst, TiC/TiO, ZnCdS",

author = "Longkai Pan and Hui Mei and Hongxia Liu and Haixi Pan and Xing Zhao and Zhipeng Jin and Gangqiang Zhu",

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T1 - High-efficiency carrier separation heterostructure improve the photocatalytic hydrogen production of sulfide

AU - Pan, Longkai

AU - Mei, Hui

AU - Liu, Hongxia

AU - Pan, Haixi

AU - Zhao, Xing

AU - Jin, Zhipeng

AU - Zhu, Gangqiang

PY - 2020/3/15

Y1 - 2020/3/15

N2 - Loading co-catalyst is one of the essential ways to strengthen the performance of photocatalyst. Here, a novel non-precious metal co-catalyst Ti2C/TiO2 was successfully synthesized and Zn0.5Cd0.5S nanoparticle grown on the surface of Ti2C/TiO2 equably. In our work, 0.01 g photocatalysts were used in photocatalytic activity measurement. Zn0.5Cd0.5S/Ti2C/TiO2 composite (2 wt% Ti2C/TiO2) exhibited the highest photocatalytic activity and the H2 yield is 32.57 mmol/g−1/h−1 under visible light irradiation. The photoelectrochemical results reveal that Ti2C/TiO2 could improve the separation of the photo-induced carriers in Zn0.5Cd0.5S/Ti2C/TiO2 heterojunction. And DFT calculations demonstrate that the Gibbs free energy of oxygen-terminated Ti2C and TiO2 are much lower than that of Zn0.5Cd0.5S. Therefore, the Ti2C/TiO2 has an active impact on improving the H2 production of Zn0.5Cd0.5S. This study provides a new way to explore the application of inexpensive co-catalysts on a large scale.

AB - Loading co-catalyst is one of the essential ways to strengthen the performance of photocatalyst. Here, a novel non-precious metal co-catalyst Ti2C/TiO2 was successfully synthesized and Zn0.5Cd0.5S nanoparticle grown on the surface of Ti2C/TiO2 equably. In our work, 0.01 g photocatalysts were used in photocatalytic activity measurement. Zn0.5Cd0.5S/Ti2C/TiO2 composite (2 wt% Ti2C/TiO2) exhibited the highest photocatalytic activity and the H2 yield is 32.57 mmol/g−1/h−1 under visible light irradiation. The photoelectrochemical results reveal that Ti2C/TiO2 could improve the separation of the photo-induced carriers in Zn0.5Cd0.5S/Ti2C/TiO2 heterojunction. And DFT calculations demonstrate that the Gibbs free energy of oxygen-terminated Ti2C and TiO2 are much lower than that of Zn0.5Cd0.5S. Therefore, the Ti2C/TiO2 has an active impact on improving the H2 production of Zn0.5Cd0.5S. This study provides a new way to explore the application of inexpensive co-catalysts on a large scale.

KW - Co-catalyst

KW - H production

KW - Photocatalyst

KW - TiC/TiO

KW - ZnCdS

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DO - 10.1016/j.jallcom.2019.153242

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SN - 0925-8388

VL - 817

JO - Journal of Alloys and Compounds

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High-efficiency carrier separation heterostructure improve the photocatalytic hydrogen production of sulfide

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