文献类型：期刊文献

英文题名：A Generic Method for Preparing Hollow Mesoporous Silica Catalytic Nanoreactors with Metal Oxide Nanoparticles inside Their Cavities

作者：Li, Kaijie[1];Wei, Jinxia[1];Yu, Hongbo[1];Xu, Pengyao[1];Wang, Jiahua[1];Yin, Hongfeng[2];Stuart, Martien A. Cohen[1];Wang, Junyou[1];Zhou, Shenghu[1]

机构：[1]East China Univ Sci & Technol, State key Lab Chem Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, 1219 Zhongguan West Rd, Ningbo 315201, Zhejiang, Peoples R China

年份：2018

卷号：57

期号：50

起止页码：16458

外文期刊名：ANGEWANDTE CHEMIE-INTERNATIONAL EDITION

收录：;EI(收录号：20184706108589);WOS:【SCI-EXPANDED(收录号:WOS:000453346300036)】；

基金：S.Z. and H.Y. thank the Ningbo Municipal Science and Technology Innovative Research Team (Grant No. 2014B81004 and 2016B10005) for funding. This work is also sponsored by the Natural Science Foundation of Shanghai (Grant No. 17ZR1440500) and the National Natural Science Foundation of China (Grant No. 21776090 and 21571183). We thank Yuewu Zeng and Kai Du at the Center for Electron Microscopy, Zhejiang University, for help with HAADF-STEM, EDS line scans, and phase mapping.

语种：英文

外文关键词：dye degradation; heterogeneous catalysis; mesoporous materials; nanoreactors; transition-metal oxides

摘要：We report a facile and generic method for the synthesis of hollow mesoporous silica nanoreactors (HMSNs) with small-sized metal oxide nanoparticles (NPs) inside their cavities. They were made by deposition of silica onto metal-containing charge-driven polymer micelles and subsequent calcination. The micelles consist of 1)negatively charged supramolecular polyelectrolyte chains of bis-ligand-bound metal ions, and 2)water-soluble, neutral/positive diblock copolymers. Owing to the facile coordination between transition-metal ion and the employed bidentate ligand, a series of HMSNs with <2nm MxOy NPs inside cavities (M=Mn, Co, Ni, Cu, or Zn) were obtained by simply varying the metal ions inside the micelles. The developed method circumvents the pre- and post-synthesis of metal oxide NPs; after calcination, hollow mesoporous nanostructures containing small-sized metal oxide NPs inside their cavities are directly obtained. The CoxOy-functionalized HMSNs catalyze the degradation of various dyes with H2O2.