光催化
材料科学
Atom(片上系统)
贵金属
金属有机骨架
氢原子
催化作用
氢
金属
纳米技术
光化学
化学
物理化学
计算机科学
有机化学
冶金
吸附
嵌入式系统
烷基
作者
Guangmei Jiang,Xingyan Liu,Huilong Jian,Peng Lu,Jinwu Bai,Guizhi Zhang,Yun Wen,Siqi Li,Youzhou He
标识
DOI:10.1016/j.cclet.2021.09.047
摘要
Several 2D nanosheets of porphyrin MOFs with various transition-metal clusters as metal nodes were prepared via a simple solvothermal method to apply in the photocatalytic hydrogen evolution, in which the hydrogen production rate of the optimal NS-Cu was as high as 15.39 mmol g−1 h−1. A series of experimental technologies especially cyclic voltammetry (CV) and Mott-Schottky (M-S) had been adopted to investigate the charge-transfer property of photo-generated electron-hole pairs, it was found that the uniformly dispersed Cu-clusters nodes in the original 2D MOFs played a key role in the electron transfer process, that was, the photo-generated electron transferred from excited state eosin-Y to the Cu-clusters nodes for the efficient hydrogen evolution. The excellent photocatalytic performance could be attributed to the reversible oxidation-–reduction process of CuII/CuI, which had excellent electron-receiving and electron-outputting capabilities. Our results provided a novel avenue to adapt the uniformly dispersed metal nodes in the original MOFs as cost-effective noble-metal-free cocatalysts with very high atom-utilization efficiency to improve the photocatalytic hydrogen evolution performance in dye-sensitized system.
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