Zekkari Meriem, Ouargli-Saker Rachida, Boudissa Farida, Lachachi Asma Kawther, El Houda Sekkal Kawter Nor, Tayeb Rachida, Boukoussa Bouhadjar, Azzouz Abdelkrim
Nanoqam, Department of Chemistry, University of Quebec at Montreal, H3C3P8, Canada; Laboratoire des Sciences, Technologie et Génie des Procédés, Université des Sciences et de La Technologie D'Oran Mohamed Boudiaf, El M'naouer, BP, 1505, Oran, Algeria.
Nanoqam, Department of Chemistry, University of Quebec at Montreal, H3C3P8, Canada.
Chemosphere. 2022 Jul;298:134312. doi: 10.1016/j.chemosphere.2022.134312. Epub 2022 Mar 15.
A promising route for thorough removal of 17α-ethinyl estradiol (EE2) from aqueous media was achieved through ozonation using mesoporous silicas such SBA-15, SBA-16, MCM-41 and MCM-48 as catalysts. Comparison with aluminosilicates along with Zeta potential and particle size measurements allowed demonstrating that EE2 interaction with silanols and hydrophobic -Si-O-Si- groups are essential requirements for the catalytic activity. Acid-base interactions, if any, should have minor contribution. EE2 hydroxylation appears to be an early step in the ozonation on all catalysts, but MCM-41 showed increased activity in phenolic ring cleavage. Confrontation of HPLC-UV and UV-Vis and HPLC-UV measurements revealed highest catalytic activity for MCM-41 and to a lesser extend of MCM-48 due to their higher specific surface area and weaker acid character. These results provide valuable findings for judiciously tailoring optimum [EE2-Silica:Water] interactions for thorough oxidative degradation of endocrine disrupting compounds (EDC).
通过使用介孔二氧化硅（如SBA - 15、SBA - 16、MCM - 41和MCM - 48）作为催化剂进行臭氧化，实现了从水介质中彻底去除17α - 乙炔雌二醇（EE2）的一条有前景的途径。与铝硅酸盐的比较以及Zeta电位和粒径测量表明，EE2与硅醇和疏水的 -Si-O-Si- 基团的相互作用是催化活性的基本要求。酸碱相互作用（如果有的话）贡献较小。EE2羟基化似乎是所有催化剂臭氧化过程中的早期步骤，但MCM - 41在酚环裂解方面表现出更高的活性。HPLC - UV和UV - Vis以及HPLC - UV测量结果表明，由于MCM - 41和MCM - 48具有更高的比表面积和较弱的酸性，它们具有最高的催化活性，其中MCM - 48的活性稍低。这些结果为明智地调整最佳的[EE2 - 二氧化硅：水]相互作用以彻底氧化降解内分泌干扰化合物（EDC）提供了有价值的发现。
