Synthesis of 0D/2D CdSe/HSr2Nb3O10 n-n heterojunction with excellent visible-light-driven photocatalytic performance

被引：1
作者：
Chen, Yibin [1 ,3 ]
Luo, Dan [1 ,3 ]
Wei, Yuelin [2 ,3 ]
Liu, Haining [4 ]
Huang, Yunfang [1 ,3 ]
Fan, Leqing [2 ,3 ]
Wu, Jihuai [2 ,3 ]
机构：
[1] Huaqiao Univ, Coll Chem Engn, Xiamen 361021, Peoples R China
[2] Huaqiao Univ, Coll Mat Sci & Engn, Xiamen 361021, Peoples R China
[3] Huaqiao Univ, Engn Res Ctr Environm Friendly Funct Mat, Minist Educ, Xiamen 361021, Peoples R China
[4] Chinese Acad Sci, Qinghai Inst Salt Lakes, Key Lab Comprehens & Highly Efficient Utilizat Sal, Qinghai Prov Key Lab Resources & Chem Salt Lakes, Xining, Qinghai, Peoples R China
来源：
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS | 2023年 / 290卷
关键词：
CE-QDs/HSNO-ns; n-n Heterojunction; Photocatalysis; Visible light response; Z-SCHEME; QUANTUM DOTS; 2-DIMENSIONAL PHOTOCATALYST; WATER; DEGRADATION; POLLUTANTS;
D O I：
10.1016/j.mseb.2023.116304
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this study, a novel CdSe/HSr2Nb3O10 n-n heterojunction was developed through successive hydrothermal reaction of zero-dimensional (0D) CdSe (CE) quantum dots (QDs) anchored on two-dimensional (2D) HSr2Nb3O10 nanosheets (HSNO-ns) with the assistance of microwave heating. The physicochemical properties of CE-QDs/HSNO-ns composites were systematically discussed by XRD, SEM, TEM, DRS, and XPS. The photocatalytic performance of samples was evaluated through photo-degradation of methyl orange (MO). The n-n heterojunctions on the impact of the enhanced photocatalytic activity mechanism was studied through the photocurrent and PL curves. The CE50/HSNO-ns photocatalyst exhibited the highest photo-degradation efficiency, which decomposed MO solution (25 mg.L-1) completely as few as 5 min under the visible light irradiation (lambda > 420 nm). Based on the physicochemical and catalytic properties, the enhancement of photocatalytic performance is mainly attributed to the construction of a n-n heterojunction between CE-QDs and HSNO-ns, as well as the increase in the visible-light region.
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页数：10
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