Key Laboratory of Environmental Material and Environmental Engineering of Jiangsu Province, College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, China.
Department of Applied Chemistry, Faculty of Engineering, Kyushu Institute of Technology, 1-1 Sensui, Tobata, Kitakyushu, Fukuoka 804-8550, Japan.
J Hazard Mater. 2015 Jun 15;290:134-41. doi: 10.1016/j.jhazmat.2015.01.033. Epub 2015 Jan 13.
Crystalline TiO2 nanoparticles with different phase compositions were fabricated on carbon fibers. The fabrication is achieved at low temperature. The process includes the treatment of Ti(OH)4 with hydrogen peroxide in the presence of carbon fibers. Neither additional acids nor bases, or additives are used during the process. Carbon fibers prior to and after TiO2 loading are characterized by FE-SEM, XRD, and UV-vis absorption spectroscopy. The photocatalytic activity was assessed via photocatalytic degradation of methyl orange solution, and found to be phase composition-dependent & pH dependent. Carbon fibers loaded with mixed-phase TiO2 led to the best photocatalytic performance. HRTEM reveals the anatase/rutile heterojunction which helps explain the high efficiency of photocatalysis. They have been demonstrated to be re-usable in the continuous photocatalytic degradation process.
不同晶相组成的 TiO2 纳米晶体被负载在碳纤维上。这种制备方法是在低温下实现的。该过程包括在碳纤维存在的条件下，用双氧水对 Ti(OH)4 进行处理。在整个过程中，既不使用额外的酸、碱或添加剂。负载 TiO2 前后的碳纤维通过 FE-SEM、XRD 和 UV-vis 吸收光谱进行了表征。通过光催化降解甲基橙溶液来评估光催化活性，发现其活性与晶相组成和 pH 值有关。负载混合相 TiO2 的碳纤维表现出最佳的光催化性能。HRTEM 揭示了锐钛矿/金红石异质结，这有助于解释其高效的光催化性能。在连续的光催化降解过程中，它们被证明是可重复使用的。
