Rational design 2D/3D MoS2/In2O3 composites for great boosting photocatalytic H2 production coupled with dye degradation

被引:50
|
作者
Hong, Yuanzhi [1 ,2 ]
Yang, Lan [1 ]
Tian, Yuwen [1 ]
Lin, Xue [1 ]
Liu, Enli [1 ]
Sun, Wei [1 ]
Liu, Yanan [1 ]
Zhu, Chengzhang [3 ]
Li, Xiangyu [1 ,2 ]
Shi, Junyou [1 ,2 ]
机构
[1] Beihua Univ, Sch Mat Sci & Engn, Jilin 132013, Peoples R China
[2] Beihua Univ, Wood Mat Sci & Engn Key Lab Jilin Prov, Jilin 132013, Peoples R China
[3] Nanjing Tech Univ, Sch Environm Sci & Engn, Nanjing 210009, Peoples R China
基金
中国国家自然科学基金;
关键词
MoS2; 2D; 3D composites; PhotocatalyticH2; production; RhB photodegradation; IN-SITU SYNTHESIS; HYDROGEN-PRODUCTION; G-C3N4; NANOSHEETS; HETEROJUNCTION PHOTOCATALYSTS; FABRICATION; EVOLUTION; MOS2; HETEROSTRUCTURE; NANOCOMPOSITES; PERFORMANCE;
D O I
10.1016/j.jtice.2023.104862
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
Background: Currently, the solar-driven photocatalytic H2 evolution coupled with pollutants photodegradation is a promising strategy for the developing sustainable solar energy and environmental processes. Thus, development of the high-efficiency, robust, and low-cost photocatalysts for photocatalytic H2 production combined with pollutants photodegradation in a one-pot system is urgently needed.Methods: In this study, the two-dimension (2D) thin-layered molybdenum disulfide (MoS2) was decorated on the surface of three-dimension (3D) cube-like indium oxide (In2O3) to forming the new 2D/3D MoS2/In2O3 composites by a hydrothermal method. The photoreactivities of as-obtained MoS2/In2O3 composites were carefully studied by the photocatalytic H2 generation coupled with dye (Rhodamine B, RhB) degradation.Significant findings: The photocatalysis results suggested that all of the as-formed composites could greatly boost photocatalytic H2 production simultaneous with RhB degradation performance with respect to pristine In2O3. Moreover, it was found that the 10 wt% MoS2 content of sample (10-MoS2/In2O3) showed the optimum activities both in H2 generation and RhB photodegradation under simulated sunlight irradiation. The H2 evolved rate of 10-MoS2/In2O3 was 15.5 mu mol/g/h, which was 77.5 times higher than that of pure In2O3. Meanwhile, The RhB photodegraded efficiency of 10-MoS2/In2O3 could achieve nearly 100%, and the total organic carbon (TOC) removal rate was 12.1-folds greater than that of single In2O3. Eventually, the charge carrier's transferring from In2O3 photocatalyst to MoS2 co-catalyst was evidenced by density functional theory (DFT) calculations, and further a dramatical improvement of photocatalytic mechanism was proposed.
引用
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页数:11
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