Interfacial structure and photocatalytic degradation performance of graphene oxide bridged chitin-modified TiO2/carbon fiber composites

• Published in: Journal of cleaner production Vol. 361; p. 132261
• Main Authors: Yu, Wenhe, Zheng, Baogui, Mao, Kui, Jiang, Jiacheng, Luo, Bingcheng, Wu, Xiaowen, Tao, Tianyi, Min, Xin, Mi, Ruiyu, Huang, Zhaohui, Liu, Yan-gai, Fang, Minghao, Zhao, Zilong
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 10.08.2022
• Subjects: Chitin modified TiO2; Graphene oxide; Interfacial engineering; Photodegradation; Rhodamine B; Photodegradation; Graphene oxide; Rhodamine B; Chitin modified TiO2; Interfacial engineering
• ISSN: 0959-6526; 1879-1786
• DOI: 10.1016/j.jclepro.2022.132261

With the advancement of industrialization, developing efficient photocatalysts are needed to resolve the more serious water pollution problems. In this study, the chitin-modified and graphene oxide (GO) bridged TiO2/carbon fibers (CGTC) were synthesized by a facile hydrothermal treatment. The CGTC80 (adding 80 mg GO) exhibited high adsorption and higher photodegradation ability than pure TiO2. The results shows that 50 ml of 50 mg L−1 RhB solution could be almost completely degraded (97%) in 60min. The racial trapping examination shows that the photogenerated holes (h+) is the may active species in the photocatalytic system. After 3 cycles degradation, the photocatalyst still has high photocatalytic performance (>90%). Meanwhile, the high performance of CGTC for pollutants may due to the creation of more adsorption sites by dispersion of chitin and rapid conduction of electrons effected by GO. In general, this visible-light-driven chitin-modified graphene oxide bridged TiO2/CF catalyst exhibits significant potential in terms of stability and reproducibility for sewage treatment applications.