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

被引：125

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.

引用

页数：10

共 56 条

[1] Charge-Transfer Effects in Ni-Fe and Ni-Fe-Co Mixed-Metal Oxides for the Alkaline Oxygen Evolution Reaction [J].