文献类型：期刊文献

英文题名：Metal organic frameworks derived C/TiO2 for visible light photocatalysis: Simple synthesis and contribution of carbon species

作者：He, Xin[1];Wu, Ming[1];Ao, Zhimin[1];Lai, Bo[2];Zhou, Yanbo[3];An, Taicheng[1];Wang, Shaobin[4]

机构：[1]Guangdong Univ Technol, Guangdong Key Lab Environm Catalysis & Hlth Risk, Guangzhou Key Lab Environm Catalysis & Pollut Con, Sch Environm Sci & Engn,Inst Environm Hlth & Poll, Guangzhou 510006, Peoples R China;[2]Sichuan Univ, State Key Lab Hydraul & Mt River Engn, Coll Architecture & Environm, Chengdu 610065, Peoples R China;[3]East China Univ Sci & Technol, State Environm Protect Key Lab Environm Risk Asse, 130 Meilong Rd, Shanghai 200237, Peoples R China;[4]Univ Adelaide, Sch Chem Engn & Adv Mat, Adelaide, SA 5005, Australia

年份：2021

卷号：403

外文期刊名：JOURNAL OF HAZARDOUS MATERIALS

收录：;EI(收录号：20204009263945);WOS:【SCI-EXPANDED(收录号:WOS:000595862200001)】；

基金：This work is financially supported by the National Natural Science Foundation of China (Grant Nos. 21777033, 21806023, 41425015), Science and Technology Program of Guangdong Province (2017B020216003), and the Innovation Team Project of Guangdong Provincial Department of Education (No. 2017KCXTD012).

语种：英文

外文关键词：MIL-125(Ti); Carbon doping; TiO2; Photocatalysis; Bisphenol A

摘要：A series of in-situ carbon-doped TiO2 (Cx/TiO2) composites with a porous and crystalline structure were successfully synthesized via one-step and low-temperature calcination of titanium metal-organic framework (MOF), MIL-125(Ti). The resultant materials were comprehensively investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), N-2 adsorption-desorption measurements, UV-vis diffuse reflectance spectrum (DRS), photoluminescence (PL) spectra and photoelectrochemical measurements, and their photocatalytic activities for bisphenol A (BPA) degradation were assessed. Compared with the benchmark TiO2 photocatalyst (P25), the Cx/TiO2 composite material with high specific surface, lower band gap, and reduced photogenerated electron hole ratio exhibited outstanding photodegradation activity and durability for BPA, which could be attributed to the combined effect of co-doping of multiple carbon species (substituent carbon and carbonate) and porous structure. During BPA degradation, the holes and superoxide radicals were the primary role oxidative species in the reaction process. Therefore, this new efficient photo catalyst is promising candidate for photodegradation of organic pollutants.