文献类型：期刊文献

英文题名：The synthesis of Cu/plate-like ZnO nanostructures and their self-assembly mechanism

作者：Wang, Hongmei[1];Lu, Zhufeng[1];Lu, Dingze[2];Li, Chunhe[2];Fang, Pengfei[2];Wang, Xiao[3]

机构：[1]Jiaxing Univ, Coll Biol Chem Sci & Engn, Jiaxing 314001, Peoples R China;[2]Wuhan Univ, Minist Educ, Key Lab Artificial Micro & Nanostruct, Dept Phys, Wuhan 430072, Peoples R China;[3]E China Univ Sci & Technol, Sch Sci, Shanghai 200237, Peoples R China

年份：2016

卷号：55

起止页码：69

外文期刊名：SOLID STATE SCIENCES

收录：;EI(收录号：20161002057446);WOS:【SCI-EXPANDED(收录号:WOS:000375206400010)】；

基金：This work was financially supported by National Natural Science Foundation of China (No. 51402126), the Program for Science and Technology of Zhejiang Province (No. 2014C37035) and Natural Science Foundation of Zhejiang Province (No. LQ13B010003).

语种：英文

外文关键词：Cu/ZnO nanocomposites; Decomposition/self-reduction mechanism; Self-assembly; Metal oleates

摘要：A composite Cu/ZnO nanostructure with Cu nanoparticles supported on ZnO hexagonal nanoplates has been successfully fabricated by a heating approach, using their metal oleate salts as the precursors without any additives. Combined Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), transmission electron microscopy (TEM) and other examination technologies, the structural properties and formation mechanism of as-synthesized Cu/ZnO nanocomposites are studied in detail. The results reveal that the nanostructures are plate-like with uniform shape and size, and Cu nanoparticles exhibit specific (111) plane matching with the (002) facet of ZnO, indicating a surface-induced interaction mechanism. Further characterization demonstrates that copper nanoparticles can be generated by a decomposition/self-reduction route of copper salts, and the oleate ions act as dual roles in the process: reducing and protecting agents. The difference of decomposition temperature between metal oleates also plays important roles in the formation of Cu/ZnO nanostructure. In addition, the catalytic performance of these nanocomposites is evaluated and it can be found that compared with Cu/rod-like ZnO, as-synthesized samples are highly selective for methanol. (C) 2016 Elsevier Masson SAS. All rights reserved.