光催化
制氢
非阻塞I/O
表面光电压
材料科学
氧化物
氢
分解水
光催化分解水
载流子
电化学
化学工程
介电谱
光化学
光电子学
催化作用
化学
电极
冶金
光谱学
物理化学
有机化学
工程类
物理
量子力学
生物化学
作者
Xingang Kong,Fangchao Lv,Hao Zhang,Yu Fan,Yong Wang,Lixiong Yin,Jianfeng Huang,Qi Feng
标识
DOI:10.1016/j.jallcom.2022.163864
摘要
Improving the efficiency of photocatalytic water splitting hydrogen production of iron-containing metal oxide photocatalysts is still a huge challenge. Herein, the new application of K2Fe4O7 for photocatalytic hydrogen production was proposed, and its photocatalytic performance was studied. Moreover, NiO was loaded on the surface of the K2Fe4O7, and improved the photocatalytic performance of K2Fe4O7. To understand the reason for the performance improvement, electrochemical impedance spectra, Surface photovoltage (SPV) and Transient photovoltage (TPV) were used to investigate the photogenerated carrier transportation mechanism of the samples. The result shows that the excellent photocatalytic performance of the samples was mainly due to the photogenerated electrons of K2Fe4O7 transferred to NiO, which enhanced the separation and transport of photogenerated carriers.
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