文献类型：期刊文献

英文题名：VO2@SiO2/Poly(N-isopropylacrylamide) Hybrid Nanothermochromic Microgels for Smart Window

作者：Wang, Yu[1];Zhao, Fang[1];Wang, Jie[1];Khan, Ali Raza[1];Shi, Yulin[2];Chen, Zhang[3];Zhang, Kaiqiang[3];Li, Li[1];Gao, Yanfeng[3,4];Guo, Xuhong[1]

机构：[1]East China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[2]Shihezi Univ, Engn Res Ctr Mat Chem Engn Xinjiang Bingtuan, Key Lab Mat Chem Engn Xinjiang Uygur Autonomous R, Shihezi 832000, Peoples R China;[3]Shanghai Univ, Sch Mat Sci & Engn, Shanghai 200444, Peoples R China;[4]Foshan Univ, Sch Mat Sci & Energy Engn, Foshan 528000, Peoples R China

年份：2018

卷号：57

期号：38

起止页码：12801

外文期刊名：INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH

收录：;EI(收录号：20183905857659);WOS:【SCI-EXPANDED(收录号:WOS:000446142600019)】；

基金：We gratefully thank the financial support from the National Natural Science Foundation of China (21476143, 51773061, and 5171101370), 111 Project Grant (B08021).

语种：英文

外文关键词：Hydrogels - Gels - Silica nanoparticles - Vanadium dioxide - Amides - Hybrid materials

摘要：VO2/PNIPAm hybrid thermochromic material has been verified as promising to improve optical performance of smart windows. However, VO2 can be easily oxidized especially when being dispersed in the hydrogel matrix, and also the nonuniform dispersion of VO2 in a host will worsen the material's optical performance. Herein, pure VO2(M)@SiO2 nanoparticles (NPs) were first prepared using a surfactant-free method. Then VO2(M)@SiO2/PNIPAm hybrid microgels were synthesized through suspension polymerization. The VO2(M)@SiO2 NPs in the hydrogel matrix exhibited obviously improved resistance to oxidation. Monodispersed hybrid microgel with uniformly distributed VO2(M)@SiO2 NPs (Sample I) was obtained. Meanwhile, compared with the best VO2 film reported, our composite microgel (Sample III) demonstrated a 164% increase in the solar modulating ability at a relatively high average luminous transmittance (38.4%). All these remarkable features of VO2(M)@SiO2/PNIPAm microgel synthesized in our work will help a lot in the practical application of the inorganic-organic hybrid nanothermochromic materials.