【作者】 许德平； 黄正宏； 王永刚； 康飞宇；

【Author】 Xu Deping Huang Zhenghong Wang Yonggang KangFeiyu(School of Chemistry and Environmental Engineering China University ofMining and Technology, Beijing 100083) (Department of Materials Science andEngineering, Tsinghua University, Beijing, 100084)

【机构】 中国矿业大学北京校区化学与环境工程学院； 清华大学材料科学与工程系；

【摘要】 论文以活性炭纤维布(ACFC)为载体,利用三种方法进行了担载实验,利用扫描电镜(SEM)观察样品形貌,表明溶胶-凝胶法适合ACFC担载TiO2。通过热处理工艺的研究表明,在氮气中锐钛矿相TiO2在ACFC表面生长较慢;而在空气中锐钛矿相生长较快,但温度超过500℃,ACFC的氧化侵蚀严重。选定的热处理条件为:空气中以5℃/min的速率升温到450℃并恒温10-30 min后随炉冷却到室温。该条件下热处理后样品表面形貌完整,TiO2的晶型为锐钛矿,紫外-可见光漫反射光谱中,在350-400 nm区间有明显吸收边,表明此复合体具有光催化活性。更多还原

【Abstract】 In this paper, loading TiO2 on activated carbon fiber cloth ( ACFC) was carried out, including TiO2 powder dispersing-liquid direct dip-coating, magnetron sputtering and sol-gel dip-coating methods. SEM observation for the morphologies of the samples shows that sol-gel dip-coating is suitable for ACFC supporting. During heat treatment , anatase TiO2 crystal grows slowly in N2 but quickly in air, however, ACFC can be eroded due to oxidation in air when temperature is higher than 500℃ The best treatment condition is that temperature is raised from room temperature to 450℃at5℃/min in air and kept constant for 10 - 30 min then cool down. Hybrids with good morphology can be obtained after heat treatment. XRD results show that the TiO2 on the surface of ACFC is anatase. The obvious adsorp- tion band can be found in the UV-VIS diffuse reflection spectrum at the band of 350 - 400 nm, suggesting that the hybrid materials have photo-catalytic activity.更多还原