Graphene-wrapped ZnO nanospheres as a photocatalyst for high performance photocatalysis

被引：61

作者：

Chen, Da ^{[1
]}

Wang, Dongfang ^{[1
]}

Ge, Qisheng ^{[1
]}

Ping, Guangxing ^{[1
]}

Fan, Meiqiang ^{[1
]}

Qin, Laishun ^{[1
]}

Bai, Liqun ^{[2
]}

Lv, Chunju ^{[1
]}

Shu, Kangying ^{[1
]}

机构：

[1] China Jiliang Univ, Coll Mat Sci & Engn, Hangzhou 310018, Zhejiang, Peoples R China

[2] Zhejiang Agr & Forestry Univ, Sch Sci, Hangzhou 311300, Zhejiang, Peoples R China

来源：

THIN SOLID FILMS | 2015年 / 574卷

基金：

中国国家自然科学基金;

关键词：

Graphene; Zinc Oxide; Nanospheres; Lyophilization; Photocatalytic activity; GRAPHITE OXIDE; VISIBLE-LIGHT; NANOCOMPOSITES; SHEETS; FILMS; NANOCRYSTALS; DEGRADATION; REDUCTION; COMPOSITE; DYES;

D O I：

10.1016/j.tsf.2014.11.051

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this work, graphene-wrapped ZnO nanospheres (ZnO-graphene nanocomposites) were prepared by a simple facile lyophilization method, followed by thermal treatment process. ZnO nanospheres with the size of about 100-400 nm, composed of numerous nanocrystals with hexagonal wurtzite structure, were well separated from each other and wrapped with transparent graphene sheets. Compared to ZnO nanospheres, the ZnO-graphene nanocomposites showed a significant enhancement in the photodegradation of methylene blue. This enhanced photocatalytic activity could be attributed to their favorable dye-adsorption affinity and increased optical absorption as well as the efficient charge transfer of the photogenerated electrons in the conduction band of ZnO to graphene. Thus, this work could provide a facile and low-cost method for the development of graphene-based nanocomposites with promising applications in photocatalysis, solar energy conversion, sensing, and so on. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：1 / 9

页数：9

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