Construction of 2D/2D Ti 3 C 2 T x MXene/CdS heterojunction with photothermal effect for efficient photocatalytic hydrogen production

被引：48
作者：
Huang, T. Y. [1 ]
Yang, Z. [1 ]
Yang, S. Y. [1 ]
Dai, Z. H. [1 ]
Liu, Y. J. [1 ]
Liao, J. H. [2 ]
Zhong, G. Y. [3 ]
Xie, Z. J. [2 ]
Fang, Y. P. [1 ]
Zhang, S. S. [1 ,3 ]
机构：
[1] South China Agr Univ, Coll Mat & Energy, Key Lab Biobased Mat & Energy, Guangdong Lab Lingnan Modern Agr,Minist Educ, Guangzhou 510643, Peoples R China
[2] South China Univ Technol, Sch Phys & Optoelect, Guangzhou 510640, Peoples R China
[3] Dongguan Univ Technol, Sch Chem Engn & Energy Technol, Guangdong Prov Key Lab Distributed Energy Syst, Dongguan 523808, Peoples R China
来源：
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY | 2024年 / 171卷
关键词：
Two-dimensional structure; Heterostructure; Photothermal effect; Photocatalyst; Hydrogen evolution; Z-SCHEME HETEROJUNCTION; TI3C2; COCATALYST; CONVERSION;
D O I：
10.1016/j.jmst.2023.07.010
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The insensitivity of semiconductors to visible and infrared light is a key constraint on the utilization of light energy in photocatalytic reactions. Constructing photocatalysts with full-spectrum absorption through surface engineering is an effective approach to fully harnessing light energy in semiconductor materials. Herein, a novel stable Ti 3 C 2 T x MXene/CdS heterojunction catalyst is obtained by in-situ epitaxial growth of two-dimensional (2D) CdS nanosheets on 2D MXene interface via a solvothermal method. The exceptional light absorption properties of MXene confer outstanding full-spectrum driven photocatalytic hydrogen evolution capability upon the heterogeneous catalyst. The unique 2D/2D structure effectively mitigated the recombination of photogenerated carriers, enhancing the photocatalytic performance of the catalyst. Moreover, the composite catalyst exhibits a significantly higher surface temperature of 80.4 & DEG;C under visible light irradiation at an intensity of 0.1 W/cm 2 , which is 1.84 times higher than that of CdS. Under irradiation of visible and near infrared light, the composite catalyst with photothermal effect demonstrates a remarkable hydrogen evolution rate of 65.4 mmol & BULL;g - 1 & BULL;h - 1 , which is 7.2 times higher than that of CdS catalyst. This study introduces a novel approach for constructing full-spectrum absorption catalysts and expands the application of the photothermal effect in photocatalytic hydrogen evolution research. & COPY; 2023 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
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页码：1 / 9
页数：9
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