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Method to Control the Phase of TiO2 in Porous Carbon–TiO2 Composite

  • Yu Xiang Chen
  • Bin Hui Luo
  • Bin Yuan Zhao
  • Yi Jian Lai
  • Hao Zhe Wang
  • Meng Yao Gao
  • Wei Xun Zhang
  • Ke Bin Chen
Article

Abstract

Activated carbon (AC)-supported composites are emerging as a novel class of materials that hold great promise for environment-protecting applications. In this paper, we present an approach for the preparation of the AC–TiO2 composite with mold-pressing using pure anatase TiO2 and self-sinterable corn straw derivative as the carbon mesophase. In order to explore the effects of the carbon mesophase and some dopants on the phase transition of anatase to rutile TiO2, the samples were characterized by X-ray diffraction (XRD) and transmission electron microscope (TEM). It was discovered that the transition could be validly influenced by the sort and content of the adulterants. As a result, the ratio between anatase and rutile could be controlled in order to improve the photocatalysis and sensing properties of TiO2. Therefore, a method for preparing the formed AC–TiO2 composite powders and monoliths with controllable anatase phase proportion for different applications could be established.

Keywords

Activated carbon Carbon mesophase Doping TiO2 Phase transition 

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Copyright information

© Springer Science+Business Media, LLC 2011

Authors and Affiliations

  • Yu Xiang Chen
    • 1
  • Bin Hui Luo
    • 1
  • Bin Yuan Zhao
    • 1
  • Yi Jian Lai
    • 2
  • Hao Zhe Wang
    • 1
  • Meng Yao Gao
    • 1
  • Wei Xun Zhang
    • 1
  • Ke Bin Chen
    • 1
  1. 1.State Key Lab in Metal Matrix Composite MaterialsShanghai Jiao Tong UniversityShanghaiPeople’s Republic of China
  2. 2.Physical and Chemical Characterization CenterShanghai Jiao Tong UniversityShanghaiPeople’s Republic of China

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