Facile Preparation of TiO_2 Nanoclusters on Graphene Templates for Photodegradation of Organic Compounds  

作　　者：Zaixing Jiang Mingqiang Wang Hao Cheng Jun Li Aslan Husnu Haibao Lv Yongtao Yao Lu Shao Yudong Huang Mingdong Dong 

机构地区：[1]Department of Polymer Science and Technology,School of Chemical Engineering and Technology,Harbin Institute of Technology [2]Interdisciplinary Nanoscience Center(iNANO),Aarhus University [3]Science and Technology on Advanced Composites in Special Environments Laboratory,Harbin Institute of Technology

出　　处：《Journal of Materials Science & Technology》2015年第8期840-844,共5页材料科学技术（英文版）

基　　金：financial support from iNANO through the Danish National Research Foundation;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;the Villum Foundation;the National Natural Science Foundation of China(No.51003021);China Postdoctoral Science Special Foundation(Nos.201003420 and20090460067);UTC Exploration Project(CASC-HIT12-1C03);Opening Project of Key Laboratory of Solid Waste Treatment and Resource Recycle,Ministry of Education(12zxgk10);Harbin City Science and Technology Projects(2013DB4BP031)

摘　　要：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 ℃; 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.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 ℃; 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.

关 键 词：Titanium dioxide GRAPHENE Supercritical CO2 NANOCLUSTER 

分 类 号：TQ134.11[化学工程—无机化工] TB383.1[一般工业技术—材料科学与工程]