摘要
以新型SiO2为载体,通过钛酸丁酯溶液的浸渍、原位水解以及高温煅烧制备出新型的大尺寸大孔径的TiO2/SiO2光催化剂。利用该催化剂设计出空气净化器进行空气净化实验,通过实验发现:大孔催化剂对甲醛、氨、苯这样的小分子物质表现出异常的吸附性能,由此提高了净化速率和效果;大孔催化剂能有效杀灭流动空气中的细菌,其中大孔结构对细菌的俘获作用强化了纳米TiO2光催化剂的杀菌能力;光催化剂本身具有长期的结构稳定性和催化活性。
A new photocatalyst material applied in a novel air cleaner was prepared and tested on lab-scale.The experiment on air purification showed that the catalyst with a macro-porous structure exhibited unusual adsorption ability towards small molecular weight substances such as formaldehyde,ammonia and benzene,enhancing air cleaning with higher rate and quality.It was the macroporous structure that made the catalyst very efficient in capturing bacteria,strengthening sterilization of nano-TiO2;besides,the photocatalyst was of long-term structural stability and activity.
出处
《环境科学与技术》
CAS
CSCD
北大核心
2011年第8期30-33,69,共5页
Environmental Science & Technology
基金
国家自然科学基金项目资助(20674041)
973前期专项基金(2010CB635116)
