摘要
以自组装SiO_2纳米球为模板,通过煅烧和模板刻蚀制备具有三维有序大孔结构的TiO_2/CeO_2复合光催化剂(3DOM TiO_2/CeO_2)。用XRD、SEM、FT-IR、DRS、PC等手段对所制备的光催化剂进行表征,在模拟太阳光下,以罗丹明B为模型降解物,对样品的光催化活性进行测试。结果表明,3DOM TiO_2/CeO_2的光催化降解活性与TiO_2/CeO_2相比得到进一步提高,其原因可能是由于3DOM结构可以产生慢光子效应,提高了TiO_2/CeO_2复合光催化剂的光吸收能力,进而提高了TiO_2/CeO_2的光催化性能。
TiO2/CeO2 composite photocatalyst with three dimension ordered macroporous structure( 3 DOM TiO2/CeO2) was prepared by calcination and template etching via self-assembly of SiO2 nanosphere as the template. The obtained photocatalyst was characterized by XRD,SEM,FT-IR,DRS and PC. The photocatalytic activity of 3 DOM TiO2/CeO2 was studied by using rhodamine B as the degradation object under simulated sunlight irradiation. The result shows that the photocatalytic degradation activity of 3 DOM TiO2/CeO2 is further improved compared with TiO2/CeO2. The reason of enhanced photocatalytic performance of 3 DOM TiO2/CeO2 can ascribe to the 3 DOM structure,which can produce slow photons effect and improve the light absorption ability of TiO2/CeO2 composite photocatalyst,and finally improve the photocatalytic properties of TiO2/CeO2.
作者
郑思源
王雅文
樊彩梅
ZHENG Si-yuan;WANG Ya-wen;FAN Cai-mei(Department of Chemistry and Chemical Engineering,Taiyuan University of Technology,Taiyuan 030024,Chin)
出处
《人工晶体学报》
EI
CAS
CSCD
北大核心
2018年第7期1324-1329,共6页
Journal of Synthetic Crystals
基金
国家自然科学基金(21303116)
山西省高等学校优秀青年学术带头人支持计划(154010141-s)