Abstract
Host-guest supramolecular interactions, which exist widely between diverse metal cations and polyoxometalate (POM) anions, have always been utilized to construct metal-organic frameworks (MOF) /POMs bulk composites. Actually, the interactions can also be found application in realizing shape-controlled synthesis of MOF nanocrystals (NCs). In this context, simply by introducing Keggin-type POMs into MOF precursors, various uniform [Cu3(BTC)2] n (BTC = benzene-1,3,5-tricarboxylate) NCs, including (truncated) octahedrons, hollow hierarchical spheres and octahedrons, are fabricated. Besides, such reaction system can be applied to construct noble metal@MOF nanocomposite, which significantly enhances the catalytic performance of the noble metal.
摘要
在金属阳离子和多酸阴离子之间广泛存在着一种超分子相互作用, 它经常被用来合成多酸基金属-有机骨架晶态材料. 这种相互作用还可以用来调控金属-有机骨架材料的成核生长过程, 从而实现其纳米晶体的可控制备. 本文将Keggin型多酸阴离子引入到金属-有机骨架材料的前驱体溶液中作为调节剂, 得到一系列形貌规则、尺寸均一的[Cu3(BTC)2] n (BTC = 1,3,5-苯三甲酸)纳米晶, 包括八面体、截角八面体、多级空心球、空心八面体等. 此外, 这种体系可以用于构建贵金属纳米晶@金属-有机骨架复合材料, 其催化性质相对于单纯的贵金属纳米晶有较大提高.
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Xu Xiaobin was born in 1990. He received his BSc degree from the Faculty of Chemistry, Northeast Normal University (NENU) in 2012. Then he joined the Department of Chemistry at Tsinghua University and conducted research under the supervision of Prof. Xun Wang. His research interests include synthesis, self-assembly and application of polyoxometalates and metal-organic frameworks nanomaterials.
Wang Xun was born in 1976. He received his PhD degree in Chemistry from the Department of Chemistry, Tsinghua University, Beijing, China, in 2004. Currently, he is a professor at the Department of Chemistry, Tsinghua University, Beijing, China. His research interests include synthesis, assembly, characterization and application of ultrathin nanomaterials. His main awards include the Finalist for the IUMRS-MRS Singapore Young Researchers Award (2014), the Science and Technology Award for Chinese Youth (2009), the National Fund for Outstanding Young Scientists (2007) and the IUPAC Prize for Young Chemists (2005).
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Xu, X., Lu, Y., Yang, Y. et al. Tuning the growth of metal-organic framework nanocrystals by using polyoxometalates as coordination modulators. Sci. China Mater. 58, 370–377 (2015). https://doi.org/10.1007/s40843-015-0053-2
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DOI: https://doi.org/10.1007/s40843-015-0053-2