层状双氢氧化物
分解水
析氧
钇
电子
氢氧化物
催化作用
材料科学
化学工程
带隙
化学
无机化学
光催化
光电子学
物理
冶金
电化学
氧化物
电极
物理化学
工程类
量子力学
生物化学
作者
Dannong He,Rui‐Ting Gao,Shujie Liu,Mao Sun,Xianhu Liu,Kan Hu,Yiguo Su,Lei Wang
出处
期刊:ACS Catalysis
日期:2020-09-04
卷期号:10 (18): 10570-10576
被引量:71
标识
DOI:10.1021/acscatal.0c03272
摘要
In situ catalyst regeneration of NiFe-based oxygen evolution catalyst (OEC) has been recognized as one of the best approaches for photocorrosion inhibition on water splitting photoelectrodes. However, it generally suffers from laborious multistep procedures to obtain a controllable film. Herein, we use an electron density modulation to synthesize a stable NiFeY layered double hydroxide (LDH) OEC and then deposit this OEC on BiVO4 as photoanodes. The incorporation of Y modifies the chemical environment of Ni and reduces the bandgap of NiFe LDH, enhancing the electrocatalytic/photoelectrochemical performance. Importantly, Y insertion in NiFe LDH remarkably reduces the surface recombination of the BiVO4/cocatalyst system, thereby establishing a much high stability to the photocatalyst than in conventional NiFe OEC/BiVO4 approaches.
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