[3Ca01-12] SS2

[3Ca11S] Role of missing-linker sites in Zr-MOF for photocatalytic hydrogen peroxide production

*Yoshifumi Kondo¹, Yasutaka Kuwahara^1,2,3, Kohsuke Mori^1,2, Hiromi Yamashita^1,2 (1. Graduate School of Engineering, Osaka University, 2. Elements Strategy Initiative for Catalysts and Batteries, Kyoto University, 3. JST PRESTO)

In this study, we synthesized defective Zr-MOF containing missing-linker defects and applied to photocatalytic hydrogen peroxide production. TG-DTA and NMR results showed that defective Zr-MOF had missing-linker sites terminated by acetates. A much higher hydrogen peroxide concentration was produced when defective Zr-MOF was used under light irradiation than when the pristine Zr-MOF was used. It was demonstrated that not only the improvement of photocatalytic reaction rate originated form promoting the linker-to-cluster charge transfer, but also the suppression of hydrogen peroxide decomposition was due to hydrophobization of Zr-MOFs by introducing missing-linker defects with acetate ligands.