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Retracted: Synthesis of Novel Ag-Doped S-Mgo Nanosphere As an Efficient Uva/Led-Activated Photocatalyst for Non-Radical Oxidation of Diclofenac: Catalyst Preparation and Characterization and Photocatalytic Mechanistic Evaluation Publisher



Moradi M1 ; Moussavi G1 ; Yaghmaeian K2 ; Yazdanbakhsh A3 ; Srivastava V4 ; Sillanpaa M4
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Authors Affiliations
  1. 1. Department of Environmental Health Engineering, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
  2. 2. Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
  3. 3. Workplace Health Promotion Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
  4. 4. Department of Green Chemistry, School of Engineering Science, Lappeenranta-Lahti University of Technology, Sammonkatu 12, Mikkeli, FI-50130, Finland

Source: Applied Catalysis B: Environmental Published:2020


Abstract

Ag-doped S-MgO powder was synthesized by doping of S-MgO with Ag and its photocatalytic activity was investigated under UVA-LED light irradiation for diclofenac (DCF) degradation. The S-MgO doped with 1 mol% of Ag showed the highest photocatalytic activity under UVA irradiation. The Ag-doped S-MgO was nanosphere with a band gap of 2.20 eV and the surface defects. Introducing Ag in the lattice of S-MgO accelerated the charge transfer and thus its photocatalytic activity. Complete degradation of 50 mg/L DCF was achieved via non-radical singlet oxygen mechanism within 15 min in the UVA/LED photocatalytic process with Ag-doped S-MgO in natural pH. In addition, 86% of DCF was mineralized within 60 min in the process. Reusability of the catalyst was successfully carried out for five consecutive runs. Accordingly, the Ag-doped S-MgO nanosphere is an efficient and durable catalyst effectively activated using a relatively low dose of UVA radiation for the degradation and mineralization of emerging water contaminants. © 2019 Elsevier B.V.
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