Microstructure and photocatalytic activity of electrospun carbon nanofibers decorated by TiO2 nanoparticles from hydrothermal reaction/blended spinning

作者：Xu, Zhiwei^*; Li, Xianhua; Wang, Wei; Shi, Jie; Teng, Kunyue; Qian, Xiaoming^*; Shan, Mingjing; Li, Cuiyu; Yang, Caiyun; Liu, Liangsen

来源：Ceramics International, 2016, 42(13): 15012-15022.

DOI：10.1016/j.ceramint.2016.06.150

• Heat treatment temperature
• Hydrothermal reaction
• Blended spinning
• Photocatalytic activity

Recently, carbon nanofibers@TiO2 (CNFs@TiO2) composites as photocatalysts for dye degradation have attracted intense attention. However, only few contributions had been made to investigate systematically the differences between the various preparation approaches and the influence of thermal treatment on the photocatalytic activity. In this work, the electrospun CNFs@TiO2 composites which were prepared by hydrothermal reaction and blended spinning, respectively, have been fabricated via stabilization in air at 280 degrees C and then carbonization in N-2 at heat treatment temperature between 500 and 1100 degrees C. The composites which were prepared by hydrothermal reaction and blended spinning showed the outstanding photocatalytic activity at 900 degrees C and 1100 degrees C, respectively. And the photocatalytic activity of composites prepared by hydrothermal reaction was higher than that prepared by blended spinning, but reversibility of the composites showed a reverse trend. These results indicated that the effect of heat treatment temperature on the photocatalytic activity depended on the synergistic effect among the adsorptive property of CNFs, TiO2 loading amount and anatase phase content in composites. Hence, combining the merits of hydrothermal reaction and blended spinning, a novel method for preparing CNFs@TiO2 composites with high TiO2 loading amount and strong interfacial interaction could be envisioned.

• 出版日期2016-10
• 单位天津工业大学