Metalloporphyrin based MOF-545 coupled with solid solution ZnxCd1-xS for efficient photocatalytic hydrogen production

被引:23
|
作者
Chen, Mengxue [1 ]
Umer, Khalid [1 ]
Li, Bonan [1 ]
Li, Zhexu [1 ]
Li, Kongming [1 ]
Sun, Wanjun [1 ,3 ]
Ding, Yong [1 ,2 ]
机构
[1] Lanzhou Univ, Coll Chem & Chem Engn, State Key Lab Appl Organ Chem, Key Lab Adv Catalysis Gansu Prov, Lanzhou 730000, Peoples R China
[2] Chinese Acad Sci, State Key Lab Oxo Synth & Select Oxidat, Lanzhou Inst Chem Phys, Lanzhou 730000, Peoples R China
[3] Lanzhou Jiaotong Univ, Sch New Energy & Power Engn, Lanzhou 730070, Gansu, Peoples R China
基金
中国国家自然科学基金;
关键词
Zn x Cd 1-x S; MOF-545; S-scheme heterojunction; Photocatalytic hydrogen evolution; METAL-ORGANIC FRAMEWORKS; CATALYSTS; CDS;
D O I
10.1016/j.jcis.2023.09.080
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The growing concern over the rapid consumption of fossil fuels has spurred scientists to seek environment friendly and sustainable energy alternatives. The utilization of photocatalytic water splitting shows great potential in generating environmentally friendly hydrogen energy. Zirconium-based porphyrin MOF-545 has drawn extensive attention in photocatalysis since it has strong light absorption and fast electron transfer capability. A series of Zr-based metalloporphyrins containing different metals, MOF-545M (M = Co, Ni, Cu, Zn), were synthesized and assembled with solid solution ZnxCd1-xS (ZCS) nanoparticle to develop the corresponding of hybrid photocatalysts, ZCS/MOF-545M. Various characterizations show that introducing the porphyrin MOF-545Co not only improve the visible light response range of Zn0.5Cd0.5S (ZCS-0.5) but also enhance the carrier separation efficiency of ZCS-0.5. The carrier transfer direction during the reaction was confirmed by surface photovoltage spectroscopy and shows the formation of S-scheme. Under visible light irradiation, the hybrid photocatalyst ZCS0.5/MOF-545Co exhibits a high H2 evolution rate of 148 mu mol h-1, with increases of 52.8, 22.9 and 6.5 times than those of bare ZnS, CdS and ZCS-0.5, respectively. The present work gives a strategy for erecting S-scheme heterojunction to inhibit the photocorrosion of metal sulfides and enhancement the carrier separation efficiency.
引用
收藏
页码:380 / 389
页数:10
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