Preparation and characterization of Sn doped TiO2/ACF photocatalytic composite material

doi:10.16085/j.issn.1000-6613.2016.02.032

Abstract

Abstract: Sn/TiO₂ was prepared with Ti(OC₄H₉)₄ and SnCl₄ by peptization-refluxing method.TiO₂ was loaded to the surface of ACF by the use of dip-coating method.TiO₂/ACF was characterized by Scanning Electron Microscopy,X-ray Diffraction,X-ray Photoelectron Spectroscopy and UV-VIS- Diffuse Reflectance Spectroscopy,and the degradation of CH₂O was investigated. When Sn was incorporated into TiO₂,the growth of TiO₂ grains was inhibited and the conversion of TiO₂ was promoted from anatase to rutile. The range of light absorbed by TiO₂ was redshift. When 0.015 mol HNO₃ were used and 6% Sn were doped content,the removal rate of CH₂O was 85.2 percent by two layer TiO₂/ACF-50 under UV irradiation,while that of only 65.3 percent was obtained under the visible light.

Key words: TiO₂/ACF composites, adsorption, catalysis, Sn doped

摘要： 以Ti(OC₄H₉)₄为前体,SnCl₄为Sn源,采用胶溶-回流法制备了Sn掺杂的TiO₂,利用浸渍提拉法将其负载到活性炭纤维(ACF)表面,并运用SEM、XRD、XPS、DRS等手段对TiO₂/ACF复合材料进行表征,考察了复合材料光催化降解气相甲醛的性能。研究结果表明,Sn元素掺入TiO₂晶格中,有利于抑制TiO₂晶粒的生长,促进TiO₂由锐钛矿型向金红石型的转化,光吸收范围发生一定程度红移;HNO₃的用量为0.015mol、掺锡量为6%、负载两层的TiO₂/ACF-50复合材料在紫外光照射下对甲醛的去除率复合材料可达85.2%,而在可见光下仅为65.3%。

关键词: TiO₂/ACF复合材料, 吸附, 催化剂, 锡掺杂

CLC Number:

TJ55

LIN Botao, SHI Dongmei. Preparation and characterization of Sn doped TiO₂/ACF photocatalytic composite material[J]. Chemical Industry and Engineering Progree, 2016, 35(02): 549-554.

蔺波涛, 施冬梅. Sn掺杂TiO₂/ACF复合材料的制备、表征及光催化性能[J]. 化工进展, 2016, 35(02): 549-554.

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Preparation and characterization of Sn doped TiO₂/ACF photocatalytic composite material

Sn掺杂TiO₂/ACF复合材料的制备、表征及光催化性能

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