Controlled Synthesis of ZnS Quantum Dots and ZnS Quantum Flakes with Graphene as a Template

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• 作者：Caixia Li ; Danyu Jiang ; Linlin Zhang ; Jinfeng Xia ; Qiang Li
• 刊名：Langmuir
• 出版年：2012
• 出版时间：June 26, 2012
• 年：2012
• 卷：28
• 期：25
• 页码：9729-9734
• 全文大小：421K
• 年卷期：v.28,no.25(June 26, 2012)
• ISSN：1520-5827

文摘

Novel ZnS quantum dots (QDs) and ZnS quantum flakes (QFs) were successfully prepared with graphene nanosheets (GNs) as a special template, and two unique heterostructures of ZnS/GNs were also obtained. Due to the structure-directing template effect of GNs, the as-synthesized ZnS with different morphologies, dots or flakes, were uniformly distributed on the surface of GNs by controlling nucleation and growth. The two different heterostructures of ZnS/GNs exhibited obvious photovoltaic response, and ZnS/GN QFs-on-sheet heterostructures show higher photovoltage than that of ZnS/GN QDs-on-sheet.