Hairy silica nanosphere supported metalnanoparticles for reductive degradation of dye pollutants

Xin Chen,^aLi Zhang,^aBin Xu,^bTingting Chen,^aLianhong Hu,^aWei Yao,^aMengxiang Zhou^aand Hui Xu *^a

^aInstitute of Advanced Synthesis, School of Chemistry and Molecular Engineering,Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing TechUniversity, Nanjing 211816, China. E-mail: ias_hxu@njtech.edu.cn

^bNanjing Institute of Environmental Sciences, Ministry of Ecology and Environment ofthe People's Republic of China, Nanjing 210042, China

Abstract: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 SiO₂@P4VP/MNP structure. In this triple-phase boundary heteronanostructure, the SiO₂-supported MNPs are well stabilized by the P4VP matrix to avoid aggregation and leaching. These SiO₂@P4VP/MNP nanocomposites exhibit good catalytic activity in the reductive degradation of organic dyes, i.e., 4-nitrophenol and rhodamine B and possess excellent stability and recyclability for five successive cycles.

Nanoscale Adv.,2021,3,2879–2886影响因子：4.553

论文链接：https://doi.org/10.1039/D1NA00020A