Highly efficient one-step synthesis of carbon encapsulated nanocrystals by the oxidation of metal pi-complexes | |
Liu BY; Shao YF(邵颖峰); Xiang X; Zhang FH; Yan SC; Li WG; Liu BY | |
发表期刊 | NANOTECHNOLOGY |
2017-08-11 | |
卷号 | 28期号:32页码:10.1088/1361-6528/aa7995 |
ISSN | 0957-4484 |
摘要 | Various carbon encapsulated nanocrystals, including MnS and MnO, Cr2O3, MoO2, Fe7S8 and Fe3O4, and ZrO2, are prepared in one step and in situ by a simple and highly efficient synthesis approach. The nanocrystals have an equiaxed morphology and a median size smaller than 30 nm. Tens and hundreds of these nanocrystals are entirely encapsulated by a wormlike amorphous carbon shell. The formation of a core-shell structure depends on the strongly exothermic reaction of metal pi-complexes with ammonium persulfate in an autoclave at below 200 degrees C. During the oxidation process, the generated significant amounts of heat will destroy the molecular structure of the metal pi-complex and cleave the ligands into small carbon fragments, which further transform into an amorphous carbon shell. The central metal atoms are oxidized to metal oxide/sulfide nanocrystals. The formation of a core-shell structure is independent of the numbers of ligands and carbon atoms as well as the metal types, implying that any metal pi-complex can serve as a precursor and that various carbon encapsulated nanocrystals can be synthesized by this method. |
关键词 | Carbon Encapsulated Nanocrystals Core-shell Low Temperature Synthesis Metal Pi-complex |
DOI | 10.1088/1361-6528/aa7995 |
收录类别 | SCI ; EI |
语种 | 英语 |
WOS记录号 | WOS:000406010300001 |
关键词[WOS] | LOW-TEMPERATURE SYNTHESIS ; HIGH-PERFORMANCE ANODE ; LITHIUM-ION BATTERIES ; ELECTROPHILIC OXIDATION ; NANOPARTICLES |
WOS研究方向 | Science & Technology - Other Topics ; Materials Science ; Physics |
WOS类目 | Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied |
项目资助者 | Natural Science Foundation of Shanghai(14ZR1419400 ; National Natural Science Foundation of China(11572326) ; Opening fund of State Key Laboratory of Nonlinear Mechanics ; Technology Innovation Action of Shanghai(12nm0503100) ; 15ZR1420500) |
课题组名称 | LNM生物材料微结构和力学性能 |
论文分区 | 二类/Q1 |
力学所作者排名 | 2 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://dspace.imech.ac.cn/handle/311007/60918 |
专题 | 非线性力学国家重点实验室 |
通讯作者 | Liu BY |
推荐引用方式 GB/T 7714 | Liu BY,Shao YF,Xiang X,et al. Highly efficient one-step synthesis of carbon encapsulated nanocrystals by the oxidation of metal pi-complexes[J]. NANOTECHNOLOGY,2017,28,32,:10.1088/1361-6528/aa7995. |
APA | Liu BY.,Shao YF.,Xiang X.,Zhang FH.,Yan SC.,...&Liu BY.(2017).Highly efficient one-step synthesis of carbon encapsulated nanocrystals by the oxidation of metal pi-complexes.NANOTECHNOLOGY,28(32),10.1088/1361-6528/aa7995. |
MLA | Liu BY,et al."Highly efficient one-step synthesis of carbon encapsulated nanocrystals by the oxidation of metal pi-complexes".NANOTECHNOLOGY 28.32(2017):10.1088/1361-6528/aa7995. |
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