Photocatalytic degradation of acetaminophen over Ag, Au and Pt loaded TiO2 using solar light
作者:Osama Nasr、Omima Mohamed、Al-Sayed Al-Shirbini、Aboel-Magd Abdel-Wahab
DOI:10.1016/j.jphotochem.2019.01.032
日期:2019.4
including pH, surfactants and drug excipients. However, lower degradation rate constants of AP were obtained under simulated and direct solar light as compared to UV light. The degradation mechanism of AP under UV as well as simulated solar light was found to follow similar, though not identical, reaction pathways leading to hydroxylated intermediates (e.g. 4-acetamidoresorcinol (4-AR), 4-acetamidocatechol
在光催化中使用太阳辐射代替紫外线的可持续性和可行性是一种有前途的水修复方法。在这项研究中,研究了广泛使用的镇痛和退热药对乙酰氨基酚(AP)与负载有贵金属的TiO 2光催化剂(Ag / TiO 2,Au / TiO 2和Pt / TiO 2)的光催化降解(PCD)。使用太阳光悬挂。贵金属(Ag,Au和Pt)在TiO 2上的沉积在不同的操作条件(包括pH,表面活性剂和药物赋形剂)下,表面增强了AP的PCD。但是,在模拟和直接太阳光下,与紫外线相比,AP的降解速率常数较低。发现在紫外线和模拟太阳光下,AP的降解机理遵循相似但不完全相同的反应途径,这些反应途径可导致羟基化中间体(例如4-乙酰氨基间苯二酚(4-AR),4-乙酰氨基二十二酚(4-AC)和对苯二酚(HQ))。根据Langmiur-Hinshelwood模型,AP的PCD遵循伪一级动力学。负载有贵金属(Ag,Au和Pt)的TiO 2光催化