文献类型：期刊文献

英文题名：One-Pot Syntheses of Porous Hollow Silica Nanoreactors Encapsulating Rare Earth Oxide Nanoparticles for Methylene Blue Degradation

作者：Xu, Pengyao;Li, Kaijie;Yu, Hongbo;Stuart, Martien A. Cohen;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; East China Univ Sci & Technol, Shanghai Key Lab Multiphase Mat Chem Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2019

卷号：58

期号：9

起止页码：3726

外文期刊名：INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH

收录：;EI(收录号：20191006592093);WOS:【SCI-EXPANDED(收录号:WOS:000460996700018)】；

基金：This work is sponsored by the National Natural Science Foundation of China (Grant No. 21776090) and the Natural Science Foundation of Shanghai (Grant No. 17ZR1440500).

语种：英文

外文关键词：Micelles - Metal nanoparticles - Nanospheres - Rare earth elements - Synthesis (chemical) - Metal ions - Cerium compounds - Copper compounds - Aromatic compounds - Rare earths

摘要：In this study, a one-pot method for preparing porous hollow silica nanospheres (PHSNs) encapsulating rare earth metal oxide nanoparticles (NPs) is reported. The synthetic route employs charge-driven micelles as templates, which consists of negatively charged complex chains of bis-ligand-bound rare earth metal ions and positively charged diblock copolymer. By deposition of silica onto the micellar coronas and subsequent calcination, a series of MxOy@PHSNs (M = La, Ce, Eu, and Gd) were synthesized. The relevant characterizations confirm that these nanostructures consist of similar to 30 nm hollow silica nanospheres and small-sized metal oxide NPs inside similar to 12 nm cavities. Degradations of methylene blue and new coccine with H2O2 over MxOy@PHSNs reveal that the CexOy NP integrated PHSNs show the best catalytic properties among these MxOy@PHSNs, and incorporation of CuxOy with CexOy further increases the activity for methylene blue degradation.