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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
Source PublicationNANOTECHNOLOGY
2017-08-11
Volume28Issue:32Pages:10.1088/1361-6528/aa7995
ISSN0957-4484
Abstract

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.

KeywordCarbon Encapsulated Nanocrystals Core-shell Low Temperature Synthesis Metal Pi-complex
DOI10.1088/1361-6528/aa7995
Indexed BySCI ; EI
Language英语
WOS IDWOS:000406010300001
WOS KeywordLOW-TEMPERATURE SYNTHESIS ; HIGH-PERFORMANCE ANODE ; LITHIUM-ION BATTERIES ; ELECTROPHILIC OXIDATION ; NANOPARTICLES
WOS Research AreaScience & Technology - Other Topics ; Materials Science ; Physics
WOS SubjectNanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied
Funding OrganizationNatural 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)
DepartmentLNM生物材料微结构和力学性能
Classification二类/Q1
Ranking2
Citation statistics
Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/60918
Collection非线性力学国家重点实验室
Corresponding AuthorLiu BY
Recommended Citation
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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