Facile Preparation of TiO2 Nanoclusters on Graphene Templates for Photodegradation of Organic Compounds

doi:10.1016/j.jmst.2015.01.011

J. Mater. Sci. Technol. ›› 2015, Vol. 31 ›› Issue (8): 840-844.DOI: 10.1016/j.jmst.2015.01.011

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Facile Preparation of TiO₂ Nanoclusters on Graphene Templates for Photodegradation of Organic Compounds

Zaixing Jiang^{1, 2, 4}, Mingqiang Wang^{1, 4}, Hao Cheng¹, Jun Li¹, Aslan Husnu², Haibao Lv³, Yongtao Yao³, Lu Shao¹, Yudong Huang^{1, *}, Mingdong Dong²

1 Department of Polymer Science and Technology, School of Chemical Engineering and Technology, Harbin Institute of Technology, Harbin 150001, China; 2 Interdisciplinary Nanoscience Center (iNANO), Aarhus University, DK-8000 Aarhus C, Denmark; 3 Science and Technology on Advanced Composites in Special Environments Laboratory, Harbin Institute of Technology, Harbin 150080, China

Received:2014-11-01 Online:2015-08-20
Contact: * Corresponding author. Prof., Ph.D.; Tel./Fax: t86 451 86414806.E-mail address: huangyd@hit.edu.cn (Y. Huang).
Supported by:
The authors acknowledge financial support from iNANO through the Danish National Research Foundation and the National Natural Science Foundation of China to the Sino-Danish Center of Excellence on “The Self-assembly and Function of Molecular Nanostructures on Surfaces”, the Carlsberg Foundation, and the Villum Foundation. Z. Jiang and Y. Huang acknowledge the National Natural Science Foundation of China (No. 51003021), China Postdoctoral Science Special Foundation (Nos. 201003420 and 20090460067), UTC Exploration Project (CASC-HIT12-1C03), Opening Project of Key Laboratory of Solid Waste Treatment and Resource Recycle, Ministry of Education (12zxgkI0) and Harbin City Science and Technology Projects (2013DB4BP031). The authors thank the TEM work by Guojian Cao from School of Materials Science and Engineering, Harbin University of Science and Technology, China.

Abstract

Abstract: Graphene is the most attractive carbon-based material at present and attracting increasing attention as promising candidates for applications in numerous areas, because of its extraordinary chemical, thermal and mechanical properties. In this paper, we discussed an innovative and simple method to synthesize titanium dioxide (TiO²) nanoclusters, using graphene as a mid-step template not as a component of final product. Using this method, the graphene was firstly fully coated with TiO₂ nanoparticles by the thermal decomposition of titanium (IV) isopropoxide in a supercritical carbon dioxide (SC-CO²) at 200 °C; the developed TiO²/graphene composites then were heated in an oxygen atmosphere. Eventually the TiO² nanoclusters were obtained. The prepared TiO² nanoclusters showed irregular features with high surface coverage, providing promises in a wide range of applications, especially for photo-degradation of organic compounds in aqueous solution under the radiation of UV-light.

Key words: Titanium dioxide, Graphene, Supercritical CO2, Nanocluster

Zaixing Jiang, Mingqiang Wang, Hao Cheng, Jun Li, Aslan Husnu, Haibao Lv, Yongtao Yao, Lu Shao, Yudong Huang, Mingdong Dong. Facile Preparation of TiO₂ Nanoclusters on Graphene Templates for Photodegradation of Organic Compounds[J]. J. Mater. Sci. Technol., 2015, 31(8): 840-844.

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Facile Preparation of TiO₂ Nanoclusters on Graphene Templates for Photodegradation of Organic Compounds

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