Self-Healing of Molecular Catalyst and Photosensitizer on Metal-Organic Framework: Robust Molecular System for Photocatalytic H2 Evolution from Water

被引：164

作者：

Kim, Dongha ^{[1
]}

Whang, Dong Ryeol ^{[1
]}

Park, Soo Young ^{[1
]}

机构：

[1] Seoul Natl Univ, Dept Mat Sci & Engn, Ctr Supramol Optoelect Mat, 1 Gwanak Ro, Seoul 151744, South Korea

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2016年 / 138卷 / 28期

基金：

新加坡国家研究基金会;

关键词：

HYDROGEN-PRODUCTION; VISIBLE-LIGHT; HETEROGENEOUS CATALYSIS; HIGHLY EFFICIENT; COMPLEXES; PLATINUM; TRANSFORMATIONS; REDUCTION; MECHANISM; OXIDATION;

D O I：

10.1021/jacs.6b04552

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Inspired by self-repair mechanism of PSII in plants, we report a self-healing system which spontaneously repairs molecular catalyst and photosensitizer during photocatalytic H-2 evolution. A bipyridine-embedded UiO-type metal-organic framework (MOF), namely Pt-n_Ir_BUiO, which incorporated H-2-evolving catalyst and photosensitizer, was synthesized and subject to photo catalytic H2 evolution reaction (HER). Impressively, HER with Pt-0.1_Ir_BUiO showed very stable molecular photo catalysis without significant decrease in its activity and colloidal formation for 6.5 days at least; in the homogeneous counterpart, the molecular catalyst became a colloid just after 7.5 h. It was revealed that the arrangement of diimine sites which closely and densely surrounded the H-2-evolving catalyst and photosensitizer in the MOF enabled such a highly efficient self-healing.

引用

页码：8698 / 8701

页数：4

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