Preparation of La3+,Carbon Nanotube Doped Nanometer TiO2 with Sol-Gel Method and Photocatalytic Activity of Doped Nanometer TiO2

郭秀生; 于德梅; 张宁; 翁博丰; 乔春苗; 解云川; 万炜涛

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Preparation of La³⁺,Carbon Nanotube Doped Nanometer TiO₂ with Sol-Gel Method and Photocatalytic Activity of Doped Nanometer TiO₂

更新时间：2025-12-08

- Preparation of La³⁺,Carbon Nanotube Doped Nanometer TiO₂ with Sol-Gel Method and Photocatalytic Activity of Doped Nanometer TiO₂
- Vol. 42, Issue 10, Pages: 1304-1308(2008)
- 作者机构：
  
  西安交通大学理学院,西安,710049
- 作者简介：
- 基金信息：
- DOI：
  CLC： TQ031.7
- Online First：10 October 2008，
  
  Published：2008
- 稿件说明：
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郭秀生, 于德梅, 张宁, et al. Preparation of La³⁺,Carbon Nanotube Doped Nanometer TiO₂ with Sol-Gel Method and Photocatalytic Activity of Doped Nanometer TiO₂[J]. 2008, 42(10): 1304-1308.
DOI：

郭秀生, 于德梅, 张宁, et al. Preparation of La³⁺,Carbon Nanotube Doped Nanometer TiO₂ with Sol-Gel Method and Photocatalytic Activity of Doped Nanometer TiO₂[J]. 2008, 42(10): 1304-1308. DOI：

摘要

采用溶胶-凝胶法

分别制备了不同掺杂量的La

掺杂TiO

、多壁碳纳米管掺杂TiO

及La

与碳纳米管共掺杂纳米TiO

粒子.通过紫外光照射甲基橙溶液的光催化降解实验

研究了掺杂对TiO

光催化活性的影响.实验表明

适量的La

掺杂可以提高TiO

的光催化活性

最佳掺杂浓度为La

摩尔分数等于0.08%

碳纳米管掺杂也可以提高TiO

的光催化活性

与碳纳米管共掺杂TiO

具有最高的光催化活性.10%(碳原子的摩尔分数)碳纳米管、0.08%La

(摩尔分数)共掺杂TiO

在1 h内对甲基橙溶液的降解率达到84%

而纯TiO

在1 h内对甲基橙溶液的降解率只有约53%.X衍射图谱和透射电镜分析表明

制得的TiO

均为锐钛矿型

晶粒直径约为8～25 nm.

Abstract

Three kinds of doped TiO

particles

include La

doped

multi-wall carbon nanotube(MWCNT)doped and their co-doped TiO

were prepared by sol-gel method. The catalytic activity of doped TiO

was evaluated via ultraviolet light degradation experiments of methyl orange. It is found that La

doped TiO

particles demonstrates a higher photocatalytic activity than that of pure TiO

and an o

ptimum value is reached at doped concentration of 0.08%(mole fraction). CNT doped TiO

can also improve the photocatalytic activity of TiO

. Besides

TiO

particles co-doped with La

and CNT show the highest photocatalytic activity. As for co-doped TiO

the decomposition ratio of methyl orange solution reaches 84% in 1 h

while it gets 53% for pure TiO

. The microstructure of the particles is characterized with XRD and TEM techniques. These particles are endowed with anatase crystal phase of about 8-25 nm diameter.

关键词

Keywords

references

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GUO Xiusheng, YU Demei, GAO Yan, et al. Dielectric properties of filled carbon nanotubes/epoxy composites with high dielectric constant[C]∥2006 1st IEEE International Conference on Nano/Micro Engineered and Molecular Systems. Piscataway,NJ,USA:IEEE,2006:295-298.

甘露,郭秀生,周林. 镍掺杂对二氧化钛光催化性能影响的研究[J]. 工业催化,2005,13(12):58-61.

GAN Lu, GUO Xiusheng, ZHOU Lin.Influence of nickel doping on behavior of titania photocatalyst [J]. Industral Catalysis, 2005,13(12):58-61.

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