摘要
以多壁碳纳米管(MWCNTs)为载体,硝酸锶铵为锶源。采用水热法制备CeO2/CNTs复合管光催化剂。采用场发射扫描电子显微镜(FE.SEM)对碳纳米管负载CeO2前后的形貌进行了表征。以阿莫西林溶液的降解为目标反应,考察了催化剂的紫外光、可见光(A>420 nm)催化活性。结果表明:所制备的催化剂基本保持了原始MWCNTs的纤维状形貌,二氧化锶在MWCNTs表面分布均匀,MWCNTs增强了污染物在催化剂表面的吸附,提高了对光的吸收和利用。因此所制备的CeO2/MWCNTs复合光催化剂表现出较高的光催化活性。
CeO2 coated muhiwalled carbon nanotubes （MWCNTs） composite photocatalysts were prepared by hydrothermal method using MWCNTs as a reaction template and ammonium ceric nitrate as a ceric source. The samples were characterized by field emission scanning electron microscopy （SEM）. The photodegradation of amoxi- cillin solution was used to evaluate the photocatalytic activity of the catalyst under UV and visible light irradiation. The results suggest that the CeO2 coated MWCNTs keep tube morphology with the pristine MWCNTs. The prepared CeO2/CNTs photocatalyst shows higher light photocatalytic activity because the M.WCNTs increase the adsorption of reactant on the photocatalyst a, which can enhance the absorption and utilization of light.
出处
《科学技术与工程》
北大核心
2012年第24期6226-6228,共3页
Science Technology and Engineering
基金
浙江省大学生科技推广项目(2011R428026)
浙江省青年基金项目(Q12B030006)资助
关键词
碳纳米管
光催化
二氧化锶
碳掺杂
carbon nanotubes photocatalysis CeO2 Carbon doping
