A novel microporous amorphous-ZnO@TiO2/graphene ternary nanocomposite with enhanced photocatalytic activity. Issue 58 (26th July 2017)

• Record Type: Journal Article
• Authors: Guo, Si-Yao; Dai, Jian-Guo; Zhao, Tie-Jun; Hou, Shuai-Dong; Zhang, Peng; Wang, Peng-Gang; Sun, Guo-Xing
• Is Part Of: RSC advances. Volume 7:Issue 58(2017)
• Page Start: 36787
• Page End: 36792
• Publication Date: 2017-07-26
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c7ra06232j
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : Configuration model of the amorphous-TiO2 /RGO heterostructure and the photocatalytic activities. Abstract : Rational design and synthesis of graphene-based photoactive heterostructures is in great demand for various applications. Herein, a novel microporous amorphous-ZnO@TiO2 /graphene heterostructure was developed via a facile approach for the first time. This heterostructure possesses excellent characteristics such as high surface area (336 m 2 g −1 ), excellent mobility of charge carriers, and enhanced photocatalytic activity. The higher photocatalytic activity of the developed novel microporous amorphous-ZnO@TiO2 /graphene hybrid was demonstrated through the degradation of water pollutants, MB and RhB. The mechanistic analysis result shows that the numerous unsaturated sites on the surface of amorphous-ZnO@TiO2 facilitate the separation of photogenerated electrons and holes, and graphene mainly acts as an electron transfer bridge. The combination of amorphous-ZnO@TiO2 and graphene constructs a new class of photocatalysts and also has a synergistic effect on improving the photocatalytic activity. The resultant amorphous-ZnO@TiO2 /graphene ternary nanocomposite as a novel high performance photocatalyst is of a great potential for water pollution treatment due to its high catalytic activity, low cost, long-term stability, and easy recovery.