Non-Aqueous Approach to Synthesize Amorphous/Crystalline Metal Oxide-Graphene Nanosheet Hybrid Composites

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• 作者：Xiangbo Meng ; Dongsheng Geng ; Jian Liu ; Mohammad Norouzi Banis ; Yong Zhang ; Ruying Li ; Xueliang Sun
• 刊名：Journal of Physical Chemistry C
• 出版年：2010
• 出版时间：November 4, 2010
• 年：2010
• 卷：114
• 期：43
• 页码：18330-18337
• 全文大小：576K
• 年卷期：v.114,no.43(November 4, 2010)
• ISSN：1932-7455

文摘

Presently, there is a dramatically increasing interest in developing graphene-supported nanocomposites, due to their unprecedented properties. Apart from the methods exposed in previous studies, this work presents a nonaqueous approach of using atomic layer deposition (ALD) to constitute novel metal oxide-graphene hybrid nanocomposites based on graphene nanosheet (GNS) powders. It is demonstrated that this gas−solid strategy exhibits many unique benefits. It reports for the first time that the as-prepared SnO₂-GNS nanocomposites are featured with not only tunable morphologies but controllable amorphous and crystalline phases of SnO₂ component as well, using SnCl₄ and H₂O as the ALD precursors. Furthermore, the determinant factors and underlying mechanisms were outlined and discussed in this work. As a consequence, besides the demonstration of ALD as an important approach for nanoarchitecturing novel metal oxide-GNS composites, the as-synthesized SnO₂-GNS hybrid nanocomposites provide more choices for many important applications, such as lithium-ion batteries, solar cells, and gas sensing.