TiO/CN 复合材料增强的双酚 A 的光降解。
The enhanced photodegradation of bisphenol A by TiO/CN composites.
机构信息
MOE Key Laboratory of Resources and Environmental System Optimization, College of Environmental Science and Engineering, North China Electric Power University, Beijing, 102206, PR China.
Department of Mathematics, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah, 21589, Saudi Arabia.
出版信息
Environ Res. 2020 Mar;182:109090. doi: 10.1016/j.envres.2019.109090. Epub 2019 Dec 24.
A new photocatalyst of TiO/CN composite (TiO/g-CN) was synthesized by the hydrothermal method. The characterization showed that TiO/g-CN extended absorption light range and enhanced generation efficiency of photo-induced electron. Under the simulated solar irradiation, the photodegradation rate of bisphenol A (BPA) by TiO/g-CN was twice as fast as that of g-CN. Furthermore, TiO/g-CN presented the good stability and excellent selectivity for BPA degradation. The high degradation rate of BPA by TiO/g-CN was demonstrated to be superoxide radical (·O) and singlet oxygen (O) by radical quenching experiment, which was further evidenced by EPR, XPS, DRS and PL analysis. These findings revealed that TiO/g-CN can be used as a potential photocatalyst for removing organic pollutants in actual environmental remediation.
通过水热法合成了一种新型的 TiO/CN 复合光催化剂（TiO/g-CN）。表征结果表明，TiO/g-CN 扩展了吸收光范围并增强了光致电子的产生效率。在模拟太阳光照射下，TiO/g-CN 对双酚 A（BPA）的光降解速率是 g-CN 的两倍。此外，TiO/g-CN 对 BPA 降解表现出良好的稳定性和优异的选择性。通过自由基猝灭实验证明，TiO/g-CN 中 BPA 的高降解率是超氧自由基（·O）和单线态氧（1O），进一步通过 EPR、XPS、DRS 和 PL 分析得到证实。这些发现表明，TiO/g-CN 可用作实际环境修复中去除有机污染物的潜在光催化剂。
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