标题：Ce3+ self-doped CeOx/FeOCl: an efficient Fenton catalyst for phenol degradation under mild conditions
作者：Zhang, Jian; Yang, Mengxue; Lian, Ye; Zhong, Mingliang; Sha, Jingquan; Liu, Guodong; Zhao, Xinfu; Liu, Shaojie
作者机构：[Zhang, Jian; Yang, Mengxue; Lian, Ye; Zhong, Mingliang; Sha, Jingquan; Liu, Guodong] Jining Univ, Dept Chem & Chem Engn, Qufu 273100, Peoples R China 更多
通讯作者：Zhang, Jian;Zhang, J;Liu, GD;Zhao, XF
通讯作者地址：[Zhang, J; Liu, GD]Jining Univ, Dept Chem & Chem Engn, Qufu 273100, Peoples R China;[Zhao, XF]Qilu Univ Technol, Shandong Acad Sci, Adv Mat Inst, Shan 更多
摘要：Herein, a novel Ce3+ self-doped CeOx/FeOCl composite was successfully prepared by a facile method for the first time, which showed remarkable catalytic activity as a Fenton catalyst in the degradation of phenol under the conditions of a neutral solution, room temperature and natural light. In CeOx/FeOCl, 5.23% CeOx is the optimal condition, and the degradation constant (k) of CeOx /FeOCl is greater than that of FeOCl by a factor of 10.8. CeOCl in the composite plays a more important role than CeO2, which greatly increases the production of center dot OH radicals. Furthermore, the Ce-doping in FeOCl accelerates the separation efficiency of the photogenerated electron-hole pairs. The increased surface area and surface potential of CeOx/FeOCl than those of FeOCl effectively promote the adsorption of phenol, which is 4.05 times that of FeOCl. According to the DFT calculations, the Ce-doping in FeOCl enhances the structural stability by increasing the strength of the chemical bonds. The adsorption of H2O2 with Ce3+ is energetically favorable, which promotes the production of center dot OH radicals. A synergistic mechanism for the enhanced catalytic performance of CeOx/FeOCl is proposed.