材料科学
异质结
无定形固体
外延
离子
纳米技术
化学工程
晶体结构
格子(音乐)
光电子学
图层(电子)
结晶学
化学
物理
有机化学
工程类
声学
作者
Rui Dai,Anqi Zhang,Zhichang Pan,Abdullah M. Al‐Enizi,Ahmed A. Elzatahry,Linfeng Hu,Gengfeng Zheng
出处
期刊:Small
[Wiley]
日期:2016-04-09
卷期号:12 (20): 2792-2799
被引量:77
标识
DOI:10.1002/smll.201600237
摘要
Core-shell structured nanohybrids are currently of significant interest due to their synergetic properties and enhanced performances. However, the restriction of lattice mismatch remains a severe obstacle for heterogrowth of various core-shells with two distinct crystal structures. Herein, a controlled synthesis of lattice-mismatched core-shell TiO2 @MoS2 nano-onion heterostructures is successfully developed, using unilamellar Ti0.87 O2 nanosheets as the starting material and the subsequent epitaxial growth of MoS2 on TiO2 . The formation of these core-shell nano-onions is attributed to an amorphous layer-induced heterogrowth mechanism. The number of MoS2 layers can be well tuned from few to over ten layers, enabling layer-dependent synergistic effects. The core-shell TiO2 @MoS2 nano-onion heterostructures exhibit significantly enhanced energy storage performance as lithium-ion battery anodes. The approach has also been extended to other lattice-mismatched systems such as TiO2 @MoSe2 , thus suggesting a new strategy for the growth of well-designed lattice-mismatched core-shell structures.
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