Constructing NiFe-metal-organic frameworks from NiFe-layered double hydroxide as a highly efficient cocatalyst for BiVO4 photoanode PEC water splitting

被引：91
|
作者：
Li, Yan [1 ]
Wang, Qizhao [1 ,2 ,3 ]
Hu, Xingsheng [1 ]
Meng, Yan [1 ]
She, Houde [1 ]
Wang, Lei [1 ]
Huang, Jingwei [1 ]
Zhu, Gangqiang [4 ]
机构：
[1] Northwest Normal Univ, Gansu Int Sci & Technol Cooperat Base Water Reten, Coll Chem & Chem Engn, Lanzhou 730070, Peoples R China
[2] Changan Univ, Sch Environm Sci & Engn, Key Lab Subsurface Hydrol & Ecol Effects Arid Reg, Minist Educ, Xian 710054, Peoples R China
[3] Tianjin Chengjian Univ, Tianjin Key Lab Bldg Green Funct Mat, Tianjin 300384, Peoples R China
[4] Shaanxi Normal Univ, Sch Phys & Informat Technol, Xian 710062, Peoples R China
来源：
CHEMICAL ENGINEERING JOURNAL | 2022年 / 433卷
基金：
中国国家自然科学基金;
关键词：
BiVO4; Layered double hydroxides; Metal-organic frameworks; Photoelectrochemical water splitting; P-N-JUNCTION; OXYGEN EVOLUTION; PHOTOELECTROCHEMICAL PERFORMANCE; OXIDE; ALPHA-FE2O3; ARRAYS; FEOOH;
D O I：
10.1016/j.cej.2021.133592
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
In this work, NiFe-metal-organic frameworks (NiFe-MOFs) cocatalyst was prepared from NiFe-layered double hydroxide (NiFe-LDH) through ligand assistance and constructed with BiVO4 as a novel composite photoanode. The photocurrent density of BiVO4 modified by NiFe-MOFs is increased by about 300%, and its stability is also remarkable improved. In addition, the incident photon-current conversion efficiency (IPCE) value of NiFe-MOFs/BiVO4 photoelectrode increases to 58% at 410 nm, and both the injection and separation efficiency have also been enhanced. The ameliorated OER performance can be put down to the NiFe-MOFs which significantly lifts the kinetics of water oxidation. These findings provide new ideas for the production of bimetal MOFs for efficiently promoting the performance of photoanode PEC.
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页数：10
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