Photo-Oxidation of Bisphenol A in Aqueous Solutions at Near Neutral pH by a Fe(III)-Carboxylate Complex with Oxalacetic Acid as a Benign Molecule
作者:Jing Xu、Chuxuan Zhao、Tianbei Wang、Shaojie Yang、Zizheng Liu
DOI:10.3390/molecules23061319
日期:——
was successfully oxidized with Fe(III)/oxalacetic acid with a ratio of 1:5 at pH 6.5, which was primarily attributed to the generated hydroxyl radical. Iron in the Fe(III)-oxalacetic acid system was reused by simple addition of oxalacetic acid to the reaction mixture. Compared to common carboxylate ligands (pyruvic acid, oxalic acid, and citric acid), oxalacetic acid is more efficient and environmentally
已知由铁-羧酸盐络合物引起的有机污染物的光氧化是一种类似光芬顿的过程。研究人员对在接近中性 pH 值下具有更高效率和更低毒性的羧酸盐配体的使用非常感兴趣。在这项工作中,在 395 nm LED 灯下研究了由草乙酸铁配合物在水溶液中引起的双酚 A (BPA) 的光氧化。结果表明,在前 10 分钟内,BPA 的降解速率以 pH 10.0 << 8.0 < 6.5 < 4.0 的顺序增加。在 pH 6.5 条件下,超过 90% 的 BPA 被 Fe(III)/草乙酸以 1:5 的比例成功氧化,这主要归因于生成的羟基自由基。Fe(III)-草乙酸系统中的铁通过简单地将草乙酸添加到反应混合物中而被再利用。