以纳米颗粒TiO2 (P25)为原料,采用水热合成法制备了具有锐钛矿晶型的TiO2纳米管(TNTs),考察了水热反应温度和焙烧温度对TNTs形貌和结构的影响.以具有双官能团结构的有机分子2-巯基丙酸为偶联剂,采用原位合成和在线组装的方法将CdS量子点(QDs)负载于TNTs上,制得了CdS/TNTs可见光催化剂,研究了2-巯基丙酸浓度对CdS负载量和CdS/TNTs光催化活性的影响.结果表明,在水热温度为150℃,焙烧温度为400℃的条件下,可制得管径为8～10 nm,管壁为2～3 nm,管长为数百纳米的锐钛矿型TNTs.经CdS QDs修饰后,TNTs的吸收阈值拓展至580 nm,在模拟可见光照射下,CdS/TNTs表现出优异的光催化降解罗丹明B性能.
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