Enhancement of Catalytic Activity Over AuPd Nanoparticles Loaded Metal Organic Framework Under Visible Light Irradiation
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- 作者：Meicheng Wen ; Yasutaka Kuwahara ; Kohsuke Mori ; Hiromi Yamashita
- 关键词：Bimetallic gold/palladium ; Metal–organic framework ; Visible ; light ; Plasmonic photocatalyst
- 刊名：Topics in Catalysis
- 出版年：2016
- 出版时间：December 2016
- 年：2016
- 卷：59
- 期：19-20
- 页码：1765-1771
- 全文大小：
- 刊物主题：Catalysis; Physical Chemistry; Pharmacy; Industrial Chemistry/Chemical Engineering; Characterization and Evaluation of Materials;
- 出版者：Springer US
- ISSN：1572-9028
- 卷排序：59
文摘
In this study, monometallic gold and palladium, and bimetallic gold/palladium were respectively deposited on chromium based amine-functionalized metal–organic framework (NH2-MIL-101) by using the impregnation method, with the aim to enhance the activity of Pd-catalyzed chemical reaction under the assistance of visible light at ambient temperatures. The oxidation state, size and location of metal nanoparticles were determined by XAFS and TEM. The physical properties of as-synthesized catalysts were also well characterized by UV–vis spectroscopy, BET and XRD. The catalytic activities of those metal nanoparticles deposited MOFs were studies for hydrolysis of ammonia borane and Suzuki–Miyaura coupling reaction. Compared with monometallic counterpart, the bimetallic gold/palladium showed much higher catalytic activity for hydrolysis of ammonia borane and Suzuki–Miyaura coupling reaction under visible light irradiation. The enhancement of the catalytic activity might be attributed to the synergistic effect between plasmonic bimetallic nanoparticles and metal organic framework in effective conversion of solar energy for generating electron rich palladium species to activate the electrophilic compounds as well as nucleophilic partner compounds. This investigation offers a new opportunity to explore the high-performance metal nanoparticle loaded MOFs photocatalysts for efficient utilization of sunlight in a wide range of chemical reactions.