Pb-N共掺杂TiO2纳米晶的制备、表征及光催化性能的研究

Pb-N共掺杂TiO2纳米晶的制备、表征及光催化性能的研究

王振华¹,主沉浮^1*,董厚欢¹,蔡元兴²

1. 山东大学化学与化工学院, 山东济南 250100； 2. 山东建筑大学材料学院，山东济南 250101

收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2006-10-24 发布日期:2006-10-24
通讯作者: 王振华

Preparation,characterization and photo-catalysis of TiO2 nanoparticles co-doped with nitrogen and plumbum

WANG Zhen-hua¹,ZHU Chen-fu^1*,DONG Hou-huan¹,CAI Yuan-xing²

1. College of Chemistry and Chemical Engineering, Shandong University, Jinan 250100;2. College of Material Science and Engineering, Shandong Jianzhu University, Jinan 250101, Shandong

Received:1900-01-01 Revised:1900-01-01 Online:2006-10-24 Published:2006-10-24
Contact: WANG Zhen-hua

摘要/Abstract

摘要： 通过溶胶凝胶法制备了Pb掺杂TiO2纳米晶、在管式炉中NH3（67%）/Ar气氛下制备N掺杂及Pb-N共掺杂的TiO2纳米晶，利用XRD, XPS, SEM及UV-VIS对样品进行了表征，并研究了样品对甲基橙溶液的降解.结果表明：Pb掺杂可以降低纳米晶的粒径，Pb-N共掺杂可以起到协同作用，降低样品的带隙能，提高样品对可见光的吸收，Pb-N共掺杂的TiO2在可见光作用下表现出较高的催化活性，0.5% Pb-N共掺杂的TiO2，可将20mg/L的甲基橙水溶液在35min内完全降解.

关键词: 二氧化钛, 共掺杂, 光催化 , 制备

Abstract: The Pb doped titanium dioxide nanoparticles were prepared by the sol-gel method. Nanoparticles of TiO2 powder co-doped with Pb and N were prepared using a sol-gel method followed by being calcined for two hours at a temperature ranging from 500 to 600℃ in a NH3/Ar atmosphere. Particle appearances were characterized by XPS, XPS, SEM and UV-VIS, and the photo-catalysis of TiO2 was studied by degrading methyl orange. Results indicate that Pb doping could decrease the particle size of nanoparticles, and Pb-N co-doping has a synergistic effect that could decrease the band gap energy and increase the visible absorption capacity of samples. Pb-N co-doped TiO2 appears to have higher photo-catalysis activity under visible light than TiO2 and Pb doped TiO2. 0.5% Pb-N co-doped TiO2 could degrade aqueous methyl orange (20mg/L) within 35minutes.

Key words: photo-catalysis , preparation, co-dope, titanium dioxide

中图分类号:

O643.3

王振华,主沉浮*,董厚欢,蔡元兴 . Pb-N共掺杂TiO2纳米晶的制备、表征及光催化性能的研究[J]. J4, 2007, 42(9): 25-29 .

WANG Zhen-hua,ZHU Chen-fu*,DONG Hou-huan,CAI Yuan-xing . Preparation,characterization and photo-catalysis of TiO2 nanoparticles co-doped with nitrogen and plumbum[J]. J4, 2007, 42(9): 25-29 .

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