Catalytic ozonation of Orange-G through highly interactive contributions of hematite and SBA-16 - To better understand azo-dye oxidation in nature

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• 作者：Safa Larouk^a ; ^b ; Rachida Ouargli^c ; ^d ; Dariush Shahidi^a ; Leanne Olhund^a ; Tze Chieh Shiao^a ; Nacira Chergui^e ; Tahar Sehili^b ; René ; Roy^a ; Abdelkrim Azzouz^a ; ^{azzouz.a@uqam.ca}
• 关键词：Ozone ; Hematite ; SBA-16 ; Orange-G ; Parameter interaction
• 刊名：Chemosphere
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：168
• 期：Complete
• 页码：1648-1657
• 全文大小：1607 K
• 卷排序：168

文摘

Hematite and SBA-16 silica showed synergy in the ozonation of orange-G in water. Phenyl ring hydroxylation and desulfonation and azo bridge hydration are involved. Acidic pH promotes hematite dissolution into Fe3+ and adsorption on SBA-16 silica. Fe3+ act as catalyst in both dispersed and adsorbed forms around Si-OH groups.