中文关键词:Bi₄O₅Br₂，卡马西平，反应机理，致畸作用 英文关键词:Bi₄O₅Br₂, carbamazepine, reactionmechanism, teratogeniceffect 基金项目:山西省高等学校科技创新项目(2019L0906)、长治学院科研项目(XJ2020000601)和长治学院基础教育项目(2020J007)资助

作者	单位	E-mail
毛晓明	长治学院化学系 山西长治 046011	maoxiaoming6609144@163.com
李敏	长治学院化学系 山西长治 046011
刘晨	长治学院化学系 山西长治 046011
秦永燕	长治学院化学系 山西长治 046011

摘要点击次数:169 全文下载次数:0 中文摘要: 通过水解法合成了Bi4O5Br2光催化剂。通过XRD，SEM和DRS等手段对催化剂的结构、形貌和光吸收性质进行了表征。结果表明催化剂呈不规则片状结构，其带隙能为2.1 eV，且价带电位EVB和导带电位ECB分别为2.61 eV和0.51 eV。基于反应原理和表征结果，提出了催化剂形成机理。在可见光照射下，Bi4O5Br2对卡马西平表现出高效的光催化氧化活性，光照120 min后，卡马西平的降解率超过90％，反应动力学速率常数k达到0.018 min-1。捕获剂实验结果表明卡马西平降解过程中的主要活性物质是光生空穴(h +)和超氧自由基阴离子(?Oˉ 2)。致畸作用实验结果表明，可见光照射120 min后，卡马西平溶液基本上没有污染。此外，Bi4O5Br2光催化剂在光催化降解卡马西平过程中表现出较高的化学稳定性和可重复性，表明其具有实际应用的潜力。 英文摘要: Bi4O5Br2 photocatalyst was synthesized by a facile and energy-saving hydrolysis method. The structure, morphology and light absorption properties of the catalyst were characterized by XRD, SEM and DRS. The results showed that the catalyst had an irregular sheet structure, its bandgap energy was 2.1 eV, and the valence band potential and conduction band potential were 2.61 eV and 0.51 eV, respectively. Based on the reaction principle and characterization results, the catalyst formation mechanism was proposed. Under visible light irradiation, the Bi4O5Br2 exhibited superb photocatalytic oxidation activity for carbamazepine. After 120 min of light irradiation, the degradation rate of carbamazepine exceeded 90%, and the reaction kinetic rate constant, k, attained 0.018 min-1. The trapping agent experimental results showed that the main active substances in the degradation process of carbamazepine were photogenerated holes (h+) and superoxide radical anion (?Oˉ 2). The results of teratogenicity experiments exhibited that the carbamazepine solution was basically free of pollution after 120 min of visible light irradiation. In addition, the Bi4O5Br2 photocatalyst maintained high chemical stability and repeatability in the process of photocatalytic degradation of carbamazepine, indicating its potential for practical applications. 查看全文查看/发表评论下载PDF阅读器 相关附件：版权转让声明书附件1附件1 -->