Post-synthesis modification of a metal–organic framework to construct a bifunctional photocatalyst for hydrogen production

作者：Tianhua Zhou, Yonghua Du, Armando Borgna, Jindui Hong, Yabo Wang, Jianyu Han, Wei Zhang, Rong Qing Xu · 发表于：Energy & Environmental Science · 年份：2013 · DOI：10.1039/c3ee41548a · 被引用次数：379 · 研究领域：Metal-Organic Frameworks: Synthesis and Applications、Advanced Photocatalysis Techniques、Advanced Nanomaterials in Catalysis

To construct photocatalytically active MOFs, various strategies have recently been developed. We have synthesized and characterized a new metal–organic framework (MOF-253-Pt) material through immobilizing a platinum complex in 2,2′-bipyridine-based microporous MOF (MOF-253) using a post-synthesis modification strategy. The functionalized MOF-253-Pt serves both as a photosensitizer and a photocatalyst for hydrogen evolution under visible-light irradiation. The photocatalytic activity of MOF-253-Pt is approximately five times higher than that of the corresponding complex. The presence of the short Pt⋯Pt interactions in the framework was revealed with extended X-ray absorption fine structure (EXAFS) spectroscopy and low temperature luminescence. These interactions play an important role in improving the photocatalytic activity of the resulting MOF.