高等学校化学学报

高等学校化学学报 ›› 2000, Vol. 21 ›› Issue (10): 1534.

• 论文 • 上一篇    下一篇

3d过渡金属掺杂TiO2纳米晶膜电极的光电化学研究

李卫华2, 乔学斌1, 高恩勤1, 杨迈之1, 郝彦忠1, 蔡生民1   

  1. 1. 安徽省宿州师范专科学校, 宿州 234000;
    2. 北京大学化学与分子工程学院, 北京 100871
  • 收稿日期:1999-08-26 出版日期:2000-10-24 发布日期:2000-10-24
  • 通讯作者: 杨迈之(1956年出生),女,博士,教授,从事光电化学和金属腐蚀与防护研究.
  • 基金资助:

    国家自然科学基金(批准号:2977303)资助

Photoelectrochemical Behavior of 3d Transition Metal Nanostructured film Electrode Doped with TiO2

LI Wei-Hua2, QIAO Xue-Bin1, GAO En-Qin1, YANG Mai-Zhi1, HAO Yan-Zhong1, CAI Sheng-Min1   

  1. 1. Collegeof Chemistryand Molecular Engineerig, Peking University, Beijign 100871, China;
    2. Suzhou Teacher's College, Suzhou 234000, China
  • Received:1999-08-26 Online:2000-10-24 Published:2000-10-24

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摘要： 应用原子力显微镜和X射线粉末法对3d过渡金属离子Cr(Ⅲ),Fe(Ⅲ),Mn(Ⅱ),Co(Ⅱ),Ni(Ⅱ),Cu(Ⅱ)和Zn(Ⅱ)掺杂TiO2纳米晶粒(简写为m3d-TiO2)作了表征,并用光电化学方法研究了m3d-TiO2纳米结构多孔膜电极.实验结果表明,m3d-TiO2纳米粒子的颗粒较均匀,粒径约为15nm,其晶型为锐钛矿和板钛矿的混晶.在所研究的m3d-TiO2中,只有Zn2+-TiO2电极的光电流大于未掺杂的TiO2纳米结构多孔膜电极.3d金属离子的掺杂引起各电极的光电流信号在一定波长范围内出现p-n转型现象.

关键词: 3d过渡金属掺杂, TiO2纳米结构多孔膜电极, n-p转型, 光电化学

Abstract: The 3d transition metal ions [Cr(Ⅲ), Fe(Ⅲ), Mn(Ⅱ), Co(Ⅱ), Ni(Ⅱ), Cu(Ⅱ), Zn(Ⅱ)] nanocrystalline doped with TiO2(abbr. m3d-TiO2) were characterized by AFMand XRD. The m3d-TiO2 nanostructured film electroede was prepared and investigated with photoelectrochemical techniques. The results show that the size of m3d-TiO2 nanocrystalline particles was quite uniform and the radii were about 15 nm. The m3d-TiO2 nanocrystalline particles were a mixture of brookite and anatase crystal forms. Of all the m3d-TiO2 investigated in this paper, however, the photocurrent intensity of Zn2+-TiO2 nanostructured film electode was higher than that of the electrode undoped with TiO2. The phenomenon of p-n type inversion was observed in certain wavelength range, which was caused by 3d transition ions doping.

Key words: Doping of 3d transition metal, TiO2 nanostructured porous film electrode, n-p Type inver sion, Photoelectrochemistry

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