A Z-scheme Bi2MoO6/CdSe-diethylenetriamine heterojunction for enhancing photocatalytic hydrogen production activity under visible light

被引：66
作者：
Mei, Feifei [1 ]
Zhang, Jinfeng [1 ]
Dai, Kai [1 ]
Zhu, Guangping [1 ]
Liang, Changhao [2 ,3 ,4 ]
机构：
[1] Huaibei Normal Univ, Anhui Key Lab Energet Mat, Coll Phys & Elect Informat, Huaibei 235000, Peoples R China
[2] Chinese Acad Sci, Inst Solid State Phys, Hefei Inst Phys Sci, Key Lab Mat Phys, Hefei 230031, Anhui, Peoples R China
[3] Chinese Acad Sci, Inst Solid State Phys, Hefei Inst Phys Sci, Anhui Key Lab Nanomat & Nanotechnol, Hefei 230031, Anhui, Peoples R China
[4] Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Anhui, Peoples R China
来源：
DALTON TRANSACTIONS | 2019年 / 48卷 / 03期
基金：
中国国家自然科学基金;
关键词：
CO2; REDUCTION; FACILE PREPARATION; CHARGE SEPARATION; HYBRID NANOFIBERS; TIO2; NANOSHEETS; LARGE-SCALE; COMPOSITE; G-C3N4; WATER; COCATALYST;
D O I：
10.1039/c8dt04578j
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Recently, cadmium selenide (CdSe) has been deeply studied because of its excellent photocatalytic hydrogen (H-2) production performance. However, pure CdSe has poor stability and severe photocorrosion, which seriously affect its application prospect. In this work, we successfully deposit Bi2MoO6 on an inorganic-organic CdSe-diethylenetriamine (DETA) hybrid to design Bi2MoO6/CdSe-DETA composites by an in situ solvothermal method. The morphology, crystal structure, electrochemical properties, H-2 evolution performance and the photostability of Bi2MoO6/CdSe-DETA composites are explored using various techniques. The results show that the as-prepared Bi2MoO6/CdSe-DETA composites exhibit excellent photocatalytic performance and photostability under visible light irradiation. Among them, the Bi2MoO6/CdSe-DETA hybrid system exhibits excellent photocatalytic H-2 production performance (5.92 mmol g(-1) h(-1)), which is approximately 3.6 and 1.8 times higher than that of pure CdSe and CdSe-DETA, respectively. After 4 cycles, the photocatalyst still maintains high H-2 production. This study develops a new type of photocatalyst that can respond to visible light. This provides an effective way to solve the energy problem by using solar energy.
引用
收藏
页码：1067 / 1074
页数：8
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