Preparation of hydrophobic SiO2/TiO2 composite aerogel and its photocatalytic

摘要：

　　In this paper, SiO2 wet gel prepared by sol-gel method using methyl trimethoxy silane (MTMS) as precursor and methanol (MeOH) as solvent and nano TiO2 were mixed.Then the hydrophobic SiO2/TiO2 composite aerogels were prepared by atmospheric pressure drying, and the structure and morphology of the composite aerogels were characterized by SEM, XRD,FT-IR, TG, and BET.The photocatalytic property and hydrophobicity of the composite aerogels were studied.The results indicated that SEM showed that the composite aerogels had three-dimensional network porous structure with nanoscale pores and the TiO2 was dispersed uniformly in aerogels.XRD and FT-IR confirmed the successful preparation of SiO2/TiO2 composite aerogels, and TG showed that the SiO2/TiO2 composite aerogel had good thermal stability.The specific surface area of the SiO2/TiO2 composite aerogel was 479.79m2/g.The SiO2/TiO2 composite aerogel showed good hydrophobicity with water contact angle of 153.5°, and excellent photocatalytic performance with photocatalytic degradation rate of methylene blue of 98.13% after 3h UV illumination.

关键词： SiO2/TiO2 composite aerogel photocatalytic superhydrophobic sol-gel method

作者: Ya-Dong Liu Li-Hui Xu Li-Ming Wang YongShen Hong Pan

作者单位: Shanghai University of Engineering Science, Longteng Road, Shang Hai, 201620, China

会议类型: 国际会议

会议名称: 2018上海纺织服装创意创新研究生学术论坛暨第十二届纺织服装创新国际论坛

会议地点: 上海

会议语种:英文

页码: 186-191

在线出版日期: 2018-10-23（万方平台首次上网日期，不代表论文的发表时间）