Metal Nanoparticles Covered with a Metal–Organic Framework: From One-Pot Synthetic Methods to Synergistic Energy Storage and Conversion Functions

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• 作者：Hirokazu Kobayashi ; Yuko Mitsuka ; Hiroshi Kitagawa
• 刊名：Inorganic Chemistry
• 出版年：2016
• 出版时间：August 1, 2016
• 年：2016
• 卷：55
• 期：15
• 页码：7301-7310
• 全文大小：935K
• 年卷期：0
• ISSN：1520-510X

文摘

Hybrid materials composed of metal nanoparticles and metal–organic frameworks (MOFs) have attracted much attention in many applications, such as enhanced gas storage and catalytic, magnetic, and optical properties, because of the synergetic effects between the metal nanoparticles and MOFs. In this Forum Article, we describe our recent progress on novel synthetic methods to produce metal nanoparticles covered with a MOF (metal@MOF). We first present Pd@copper(II) 1,3,5-benzenetricarboxylate (HKUST-1) as a novel hydrogen-storage material. The HKUST-1 coating on Pd nanocrystals results in a remarkably enhanced hydrogen-storage capacity and speed in the Pd nanocrystals, originating from charge transfer from Pd nanocrystals to HKUST-1. Another material, Pd–Au@Zn(MeIM)₂ (ZIF-8, where HMeIM = 2-methylimidazole), exhibits much different catalytic activity for alcohol oxidation compared with Pd–Au nanoparticles, indicating a design guideline for the development of composite catalysts with high selectivity. A composite material composed of Cu nanoparticles and Cr₃F(H₂O)₂O{C₆H₃(CO₂)₃}₂ (MIL-100-Cr) demonstrates higher catalytic activity for CO₂ reduction into methanol than Cu/γ-Al₂O₃. We also present novel one-pot synthetic methods to produce composite materials including Pd/ZIF-8 and Ni@Ni₂(dhtp) (MOF-74, where H₄dhtp = 2,5-dihydroxyterephthalic acid).