水热制备掺锑纳米TiO2及其光活性抑制研究

无机材料学报

水热制备掺锑纳米TiO₂及其光活性抑制研究

丘永樑; 陈洪龄; 徐南平

南京工业大学化学化工学院江苏材料化学工程重点实验室, 南京 210009

收稿日期:2004-04-23 修回日期:2004-05-27 出版日期:2005-05-20 网络出版日期:2005-05-20

Preparation of Sb₂O₃-doped TiO₂ by Hydrothermal Method and the Inhibition of Photocatalytic Activity

QIU Yong-Liang; CHEN Hong-Ling; XU Nan-Ping

Key Laboratory of Materials-Oriented Chemical Engineering of Jiangsu Province; College of Chemistry and Chemical Engineering; Nanjing University of Technology; Nanjing 210009; China

Received:2004-04-23 Revised:2004-05-27 Published:2005-05-20 Online:2005-05-20

摘要/Abstract

摘要： 在200℃,6h条件下水热制备两种掺锑二氧化钛,Sb₂O₃:TiO₂介于0-0.35mol%.第一种以二氧化钛和SbCl₃为原料;第二种以偏钛酸和SbCl₃为原料.用XRD、SEM、EDS、TG、IR表征样品,谢乐公式估算晶粒直径.EDS检测到Sb₂O₃的存在,XRD检测表明掺锑TiO₂均为锐钛型.锑的掺入可有效抑制第二种掺锑二氧化钛晶粒的长大.通过罗丹明B的光降解,表明两种掺锑纳米TiO₂光活性均得到有效抑制.以偏钛酸为原料制得的掺锑TiO₂ 的光活性低于以二氧化钛为原料制得的掺锑TiO₂.当Sb₂O₃:TiO₂为0.21%时,掺锑二氧化钛光活性最低.

关键词: 水热法, 三氧化二锑, 二氧化钛, 光催化, 罗丹明B

Abstract: Two kinds of Sb₂O₃-doped TiO₂(Sb₂O₃:TiO₂=0～0.35mol%) nano-particles were synthesized
by the hydrothermal method at 200℃ for 6h. The first kind of Sb₂O₃-doped TiO₂ was prepared by using titania and antimony trichloride as reactants.
The second kind of Sb₂O₃-doped TiO₂ was prepared by using metatitanic acid and antimony trichloride as reactants. The Sb₂O₃-doped TiO₂
powders were characterized by XRD, SEM, EDS, TG, IR and the diameter of the particles was evaluated by Scherrer equation. EDS characterization shows that
Sb₂O₃ exists in Sb₂O₃-doped TiO₂. The crystallines of all samples are anatase in XRD patterns. The dopant of Sb₂O₃ can inhibit
the particle growth of the second kind of Sb₂O₃-doped TiO2 when the crystalline is changed into anatase TiO₂. The photocatalytic activities
of the two kinds of Sb₂O₃-doped TiO₂ were characterized by photodegradation of rhodamine B. The photocatalytic activity of Sb₂O₃-doped TiO₂ is
effectively suppressed by the doping of Sb₂O₃. When Sb₂O₃:TiO₂ is 0.21%, the photocatalytic activity of Sb₂O₃-doped TiO₂
is the lowest. The photocatalytic activity of the second kind of Sb₂O₃-doped TiO₂ is lower than that of the first.

Key words: hydrothermal method, Sb₂O₃, TiO₂, photocatalysis, rhodamine B

中图分类号:

O643

丘永樑,陈洪龄,徐南平. 水热制备掺锑纳米TiO₂及其光活性抑制研究[J]. 无机材料学报.

QIU Yong-Liang,CHEN Hong-Ling,XU Nan-Ping. Preparation of Sb₂O₃-doped TiO₂ by Hydrothermal Method and the Inhibition of Photocatalytic Activity[J]. Journal of Inorganic Materials.

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水热制备掺锑纳米TiO₂及其光活性抑制研究

Preparation of Sb₂O₃-doped TiO₂ by Hydrothermal Method and the Inhibition of Photocatalytic Activity

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