SCI和EI收录∣中国化工学会会刊

›› 2011, Vol. 19 ›› Issue (4): 674-681.

• • 上一篇    下一篇

Effect of Ethanol on Synthesis and Electrochemical Property of Mesoporous Al-doped Titanium Dioxide via Solid-state Reaction

刘少友1,2, 陆建平1, 冯庆革1, 唐文华2   

  1. 1. College of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China;
    2. Institute of Applied Chemistry, Kaili University, Kaili 556011, China
  • 收稿日期:2011-02-01 修回日期:2011-01-28 出版日期:2011-08-28 发布日期:2011-08-28
  • 通讯作者: FENG Qingge,E-mail:fengqg@gxu.edu.cn
  • 基金资助:
    Supported by the National Natural Science Foundation of China (21061006);the Research of Natural Science and Technology Foundation of Guizhou Province ([2010]2006);the Graduate Scientific Innovation Project of Education Department of Guangxi Autonomous Region (1059330901009)

Effect of Ethanol on Synthesis and Electrochemical Property of Mesoporous Al-doped Titanium Dioxide via Solid-state Reaction

LIU Shaoyou1,2, LU Jianping1, FENG Qingge1, TANG Wenhua2   

  1. 1. College of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China;
    2. Institute of Applied Chemistry, Kaili University, Kaili 556011, China
  • Received:2011-02-01 Revised:2011-01-28 Online:2011-08-28 Published:2011-08-28
  • Supported by:
    Supported by the National Natural Science Foundation of China (21061006);the Research of Natural Science and Technology Foundation of Guizhou Province ([2010]2006);the Graduate Scientific Innovation Project of Education Department of Guangxi Autonomous Region (1059330901009)

摘要: Mesoporous aluminum-doped titanium dioxide(Al-TiO2) materials with high specific surface areas were prepared via a solid-state reaction route.The properties of these materials were characterized by X-ray diffraction(XRD), high resolution transmission electron microscopy(HRTEM), energy dispersive spectroscopy(EDS), N2 absorption-desorption, ultraviolet visible light spectroscopy(UV-Vis) and electrochemical spectroscopy.The results show that the mesoporous structure of the product with ethanol is composed of anatase laced crystal walls with amorphous grain boundaries formed gradually by degradation.Compared with those without ethanol, these samples possess larger crystallite size since ethanol decreases the pore size at higher temperature.With the increase of ethanol amount, however, the crystallite size will grow.The amorphous grain boundaries in the mesoporous material, with a large impedance and low incidental cyclic potential, are difficult to effectively degrade and the phase transformation temperature is changed from 500 to 550℃.The growth rate of Al-TiO2 crystallites that obeys the quadratic polynomial equation may be controlled.

关键词: mesoporous material, Al-doped TiO2, solid-state reaction, ethanol, electrochemical property

Abstract: Mesoporous aluminum-doped titanium dioxide(Al-TiO2) materials with high specific surface areas were prepared via a solid-state reaction route.The properties of these materials were characterized by X-ray diffraction(XRD), high resolution transmission electron microscopy(HRTEM), energy dispersive spectroscopy(EDS), N2 absorption-desorption, ultraviolet visible light spectroscopy(UV-Vis) and electrochemical spectroscopy.The results show that the mesoporous structure of the product with ethanol is composed of anatase laced crystal walls with amorphous grain boundaries formed gradually by degradation.Compared with those without ethanol, these samples possess larger crystallite size since ethanol decreases the pore size at higher temperature.With the increase of ethanol amount, however, the crystallite size will grow.The amorphous grain boundaries in the mesoporous material, with a large impedance and low incidental cyclic potential, are difficult to effectively degrade and the phase transformation temperature is changed from 500 to 550℃.The growth rate of Al-TiO2 crystallites that obeys the quadratic polynomial equation may be controlled.

Key words: mesoporous material, Al-doped TiO2, solid-state reaction, ethanol, electrochemical property