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掺Pb的TiO2纳米功能材料的制备及其光催化性能
引用本文:孙晓君,井立强,蔡伟民,周德瑞,徐朝鹏,王志平,马洪志.掺Pb的TiO2纳米功能材料的制备及其光催化性能[J].压电与声光,2002,24(3):232-235.
作者姓名:孙晓君  井立强  蔡伟民  周德瑞  徐朝鹏  王志平  马洪志
作者单位:哈尔滨工业大学,环境科学与工程系,哈尔滨,150001
摘    要:采用溶胶-凝胶法制备了掺Pb的摩尔比分别为0.5%、1%、3%、5%、7%、10%的改性TiO2纳米粒子,并利用XRD和UV-VIS检测技术对所制得的样品进行了表征,考察了焙烧温度和掺Pb量对材料组成、结构和光学性质的影响;另外,以模拟太阳光下苯酚的光催化降解为模型反应,对Pb改性的TiO2纳米粒子的光催化活性进行了评价,考察了掺Pb量对材料催化性能的影响。结果表明,掺入适量的Pb后,TiO2纳米粒子的光催化活 性得到较大的提高,这可能是由于Pb进入TiO2晶格中生长成了新相PbxTi1-xO2,从而使材料的光响应范围向可见光区移动,提高了对可见光的利用率。本实验表明,掺Pb的摩尔比为3%的改性TiO2纳米粒子的光催化活性最高。

关 键 词:二氧化钛  Pb  改性  溶胶-凝胶  光催化降解
文章编号:1004-2474(2002)03-0232-04
修稿时间:2001年12月3日

The Preparation and Photocatalytic Properties of Pb Doped TiO2 Nanoparticles Functional Material
SUN Xiao jun,JING Li qiang,CAI Wei min,ZHOU De rui,XU Zhao peng,WANG Zhi ping,MA Hong zhi.The Preparation and Photocatalytic Properties of Pb Doped TiO2 Nanoparticles Functional Material[J].Piezoelectrics & Acoustooptics,2002,24(3):232-235.
Authors:SUN Xiao jun  JING Li qiang  CAI Wei min  ZHOU De rui  XU Zhao peng  WANG Zhi ping  MA Hong zhi
Abstract:TiO 2 nanoparticles were modified by doping Pb ions for improving the efficiency of using the solar light.Pb doped TiO 2 nanoparticles were prepared by Sol Gel method with Pb content of 0 5%,1%,3%,5%,7% and 10 %.The properties of as prepared samples were tested using the techniques such as XRD and UV VIS.The influences of some factors such as calcined temperature and the content of doped Pb on the optical properties of as prepared material and its composition as well as construct were investigated.In addition,the photocatalytic activities of as prepared Pb/TiO 2 samples were evaluated by the result of photocatalytic degradation of phenol under artificial sunlight.Meanwhile,the effect of doped Pb content on the photocatalytic activities of the functional material was studied.The results showed that the photocatalytic activities of Pb doped TiO 2 nanoparticles could be enhanced.It may be attributed to the formation of a new phase,Pb x Ti 1- x O 2,by doping Pb ions in the lattice of TiO 2.That would induce the light response of material to shift to the visible region.It would increase the efficiency of visible light utilization.The experiment proved that the photocatalytic activities of 3 % Pb doped TiO 2 nanoparticles were the best of all the prepared samples.
Keywords:titanium dioxide  Pb  modification  Sol  Gel  photocatalytic degradation
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