文献类型：期刊文献

英文题名：Synthesis of Yolk Shell Structured Fe3O4@void@CdS Nanoparticles: A General and Effective Structure Design for Photo-Fenton Reaction

作者：Shi, Wen[1,2];Du, Dan[1,2];Shen, Bin[1,2];Cui, Chuanfeng[1,2];Lu, Liujia[1,2];Wang, Lingzhi[1,2];Zhang, Jinlong[1,2,3]

机构：[1]East China Univ Sci & Technol, Key Lab Adv Mat, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Sch Chem & Mol Engn, Inst Fine Chem, 130 Meilong Rd, Shanghai 200237, Peoples R China;[3]Suzhou Jukang New Mat Co Ltd Sci & Technol, 558 Fenhu Rd, Suzhou 201211, Peoples R China

年份：2016

卷号：8

期号：32

起止页码：20831

外文期刊名：ACS APPLIED MATERIALS & INTERFACES

收录：;EI(收录号：20163502741877);WOS:【SCI-EXPANDED(收录号:WOS:000381715900037)】；

基金：This work has been supported by National Nature Science Foundation of China (U140710223, 21237003 and 21377038), the National Basic Research Program of China (973 Program, 2013CB632403), the Science and Technology Commission of Shanghai Municipality (14230710500 and 16JC1401400), PetroChina Innovation Foundation 2015D-5006-0402, the Science and Technology Commission of Jiangsu Province (BC2015135), the Fundamental Research Funds for the Central Universities.

语种：英文

外文关键词：Fe3O4@void@CdS; yolk-shell; photo-Fenton; wide pH range; semiconductors

摘要：Yolk-shell (Y-S) structured Fe3O4@void@CdS nanoparticles (NPs) are synthesized through a one-pot coating-etching process with Fe3O4@ SiO2 as the core, where the coating of an outer CdS shell from a chemical bath deposition (CBD) process is simultaneously accompanied by the gradual etching of an inner SiO2 shell. The as-prepared Fe3O4@void@CdS NPs (ca. 200 nm) possess good monodispersity and a uniform cdS shell of ca E15 This composite exhibits excellent photo-Fenton (ph-F) activity toward the degradation of methylene blue (MB) in a wide pH working range of 4.5-11 under the visible light irradiation. A series of control experiments demonstrate the unique Y S structure contributes to the enhanced activity, where the separation of hole electron pair from cdS and the reduction of Fe2+ from Fe3+ are mutually promoted. The similar efficiency can also be achieved when the shell component changes to TiO2, or CeO2, demonstrating a general strategy for the design of robust ph-F agent.