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Ozonation of carbamazepine in the presence of sulfur-dopped graphene: Effect of process parameters and formation of main transformation products by Anam Asghar; Mohaned Hammad; Klaus Kerpen; Felix Niemann; Ahmed K. Al-Kamal; Doris Segets; Hartmut Wiggers; Torsten C. Schmidt is a Environmental Science article available to read on EtoBox.
What is Ozonation of carbamazepine in the presence of sulfur-dopped graphene: Effect of process parameters and formation of main transformation products about?
The stability of graphene structure in sulfur-doped graphene catalyst is demonstrated to be a key aspect during the ozonation process. Enhancing the stability of the sulfur-doped graphene structure is therefore important to improve its catalytic activity during the ozonation process. However, this has remained a challenge so far. Therefore, we adopted a low-energy microwave plasma technique to synthesize a high purity sulfur-doped graphene (S ⎯ Gr) catalyst for the ozonation process. The effect of S ⎯ Gr in the ozonation process was tested using carbamazepine (CBZ; 0.05 mM) as a probe compound. A complete CBZ removal was obtained at an ozone concentration of 0.08 mM while in comparison with single O 3 , ∼1.5 and 2.5 times decrease in the formation of the two important intermediate transformation products i.e., BQM (1-(2-benzaldehyde) -4-hydroxy (1H, 3H)-quinazoline-2-one) and BQD (1-(2-benzaldehyde) -(1H, 3H)-quinazoline-2, 4-dione) was observed. Radical scavenging experiments confirmed the formation of HO•. The XPS results showed that the activity of S ⎯ Gr towards the formation of HO• was positively related to S-bearing carbon atoms at the edge of the graphene structure. Therefor
Who reads Ozonation of carbamazepine in the presence of sulfur-dopped graphene: Effect of process parameters and formation of main transformation products?
It is typically read by researchers, students, and practitioners in Environmental Science.
- Author
- Anam Asghar; Mohaned Hammad; Klaus Kerpen; Felix Niemann; Ahmed K. Al-Kamal; Doris Segets; Hartmut Wiggers; Torsten C. Schmidt
- Publisher
- Elsevier BV
- Published
- 2023
- Language
- EN
- Field
- Environmental Science (Physical Sciences)