陈孝云,陆东芳,谭非,林淑芳

• 1:福建农林大学材料工程学院
• 2:福建农林大学园林学院

摘要(Abstract)：

以四氯化钛为钛源,离子液体1-丁基-3-甲基咪唑六氟磷酸盐([Bmim]PF6)/水为混合溶剂,采用液相水解-沉淀法合成纳米TiO2光催化剂。以苯酚为模型物,考察了TiO2紫外下催化活性。采用XRD、TG/DSC、TEM、FTIR、DRS、低温N2物理吸附-脱附等技术对催化剂的结构进行表征。结果表明,在离子液体/水混合溶剂中合成TiO2的光催化活性较纯水溶剂中合成TiO2的光催化活性高,且在较宽的活化温度范围内(500~700℃)都表现出较高的光催化活性。这一结果可归因于在离子液体/水混合介质中合成的TiO2颗粒小、分散性好、比表面积大(138 m2/g)、吸附性能强。另外,离子液体的存在一定程度上降低了TiO2粒子表面羟基数量及表面酸度,提高了锐钛矿相TiO2向金红石相转变的温度。

关键词(KeyWords)： 离子液体;二氧化钛;介孔;光催化

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(31000269);; 福建省高校杰出青年科研人才培育计划(JA11072);; 福建省教育厅基金(JA10121)

作者(Author): 陈孝云,陆东芳,谭非,林淑芳

DOI: 10.13289/j.issn.1009-6264.2013.10.003

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