Chen Xin, Zhang Li, Xu Bin, Chen Tingting, Hu Lianhong, Yao Wei, Zhou Mengxiang, Xu Hui
Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University Nanjing 211816 China
Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment of the People's Republic of China Nanjing 210042 China.
Nanoscale Adv. 2021 Mar 22;3(10):2879-2886. doi: 10.1039/d1na00020a. eCollection 2021 May 18.
Hairy materials can act as a sort of scaffold for the fabrication of functional hybrid composites. In this work, silica nanospheres modified with covalently grafted poly(4-vinylpyridine) (P4VP) brushes, namely, "hairy" silica spheres, were utilized as a support for the anchorage of metal nanoparticles (MNPs), thus resulting in the hierarchical SiO@P4VP/MNP structure. In this triple-phase boundary heteronanostructure, the SiO-supported MNPs are well stabilized by the P4VP matrix to avoid aggregation and leaching. These SiO@P4VP/MNP nanocomposites exhibit good catalytic activity in the reductive degradation of organic dyes, , 4-nitrophenol and rhodamine B and possess excellent stability and recyclability for five successive cycles.
毛发状材料可作为制备功能性杂化复合材料的一种支架。在本工作中，用共价接枝聚（4-乙烯基吡啶）（P4VP）刷修饰的二氧化硅纳米球，即“毛发状”二氧化硅球，被用作金属纳米颗粒（MNP）锚固的载体，从而形成分级的SiO@P4VP/MNP结构。在这种三相边界异质纳米结构中，SiO负载的MNP被P4VP基质很好地稳定，以避免聚集和浸出。这些SiO@P4VP/MNP纳米复合材料在有机染料、4-硝基苯酚和罗丹明B的还原降解中表现出良好的催化活性，并且在连续五个循环中具有优异的稳定性和可回收性。
