天津工业大学学报2016，Vol.35Issue(6)：50-54,72,6.DOI:10.3969/j.issn.1671-024x.2016.06.009
碳纳米管负载二氧化钛的制备及其对甲基橙的光催化降解
Preparation of carbon nanotubes supported titanium dioxide and its photocatalytic degradation for methyl orange
摘要
Abstract
By using sol-gel method with tetrabutyl titanate as precursor, carboxylic multi walled carbon nanotubes (oCNTs) as carrier, ethanol as solvent, acetic acid as inhibitor, the composite photocatalyst of TiO2 nanoparticles sup-ported on carbon nanotubes(TiO2/oCNTs) was synthesized successfully. The prepared TiO2/oCNTs nanocomposite materials were characterized through X-ray diffraction (XRD), transmission electron microscopy (TEM), and UV-vis spectra (UV-vis) etc. The results showed that in the TiO2/oCNTs composite prepared by calcination at 450℃for 3 hours, Nano TiO2 was anatase and even coated on the surface of oCNTs. The existence of oCNTs can effectively change the surface properties of the composite in order to realize the sensitivity of TiO2 to UV light. When the TiO2 and oCNTs were dispersed in the solution with the mass ratios of 1∶0.03, and the amount of the TiO2/oCNTs catalyst was 0.8 g/L, the methyl orange solution was 20 mg/L,which was lighted under UV radiation for 1 h, the degradation rate of the methyl orange in the photocatalyst′s experimental was about 99%. At the same conditions , the degradation rate of pure TiO2 for methyl orange was below 50%. This indicated that the oCNTs can improve the photocatalytic activity of TiO2 towards methyl orange. Methyl orange was cyclic degra-dated with five times by the TiO2/3%oCNTs photocatalyst when the mass ratios of TiO2 and oCNTs is 1∶0.03, its degradation rate remained at 95%,catalyst recovery reached 95%.关键词
多壁碳纳米管/纳米二氧化钛/甲基橙/溶胶-凝胶法/光催化/降解Key words
carboxylic multi walled carbon nanotubes (oCNTs)/titanium dioxide nanoparticles/methyl orange/sol-gel method/photocatalytic/degradation分类
化学化工引用本文复制引用
王文一,王恩霞,霍腾波,朱刘勇,山伯晋,连伟涛,李银山..碳纳米管负载二氧化钛的制备及其对甲基橙的光催化降解[J].天津工业大学学报,2016,35(6):50-54,72,6.基金项目
国家自然科学基金资助项目（21206120）；化学工程联合国家重点实验室开放课题 （）
