文献类型：期刊文献

中文题名：Spherical Polyelectrolyte Brush Nanoreactor:Preparation of Hollow TiO_(2) Nanospheres and Characterization by Small Angle X-Ray Scattering

作者：Yu-Hua Zhang[1];Zi-Yu Zhang[1];Xin Liu[1];En-Guang Ma[2];Jiang-Tao Guo[1];Li Li[1];Xu-Hong Guo[1,3]

机构：[1]State Key Laboratory of Chemical Engineering,East China University of Science and Technology,Shanghai,200237,China;[2]Shandong Provincial Key Laboratory of Monocrystalline Silicon Semiconductor Materials and Technology,College of Chemistry and Chemical Engineering,Dezhou University,Dezhou,253023,China;[3]Institute of Bast Fiber Crops&Center of Southern Economic Crops,Chinese Academy of Agricultural Sciences,Changsha,410205,China

年份：2024

卷号：42

期号：9

起止页码：1393

中文期刊名：Chinese Journal of Polymer Science

外文期刊名：高分子科学（英文版）

收录：CSTPCD;;Scopus;CSCD:【CSCD2023_2024】；

基金：funded by the National Key Research and Development Program of China,grant number 2023YFD1700303.

语种：英文

中文关键词：Spherical polyelectrolyte brush;Nanoreactor;Hollow titanium dioxide;X-ray scattering

摘要：Titanium dioxide(TiO_(2))hollow nanoparticles present significant potential for photocatalytic applications while their straightforward preparation with precise structure control is still challenging.This work reports the approach to preparing tunable hollow TiO_(2) nanospheres by utilization of spherical polyelectrolyte brushes(SPB)as nanoreactors and templates.During the preparation,the evolution of the structure was characterized by small angle X-ray scattering(SAXS),and in combination with dynamic light scattering and transmission electron microscopy.The formation of TiO_(2) shell within the brush(SPB@TiO_(2))is confirmed by the significant increase of the electron density,and its internal structure has been analyzed by fitting SAXS data,which can be influenced by Titanium precursors and ammonia concentration.After calcining SPB@TiO_(2) in a muffle furnace,hollow TiO_(2) nanospheres are produced,and their transition to the anatase crystal form is triggered,as confirmed by X-ray diffraction analysis.Utilizing the advantages of their hollow structure,these TiO_(2) nanospheres exhibit exceptional catalytic degradation efficiency of methylene blue(MB),tetracycline(TC),and 2,4-dichlorophenoxyacetic acid(2,4-D),and also demonstrate excellent recyclability.