| Strategies to enhance the photocatalytic performance of metal oxide semiconductors for wastewater remediation |
| Paper ID : 1128-ISCHU |
| Authors |
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Nour M. Hanafy *1, Norhan abdelnaeem2, Yasmeen Tawfik3, Mennatullah Saeed4, Sahar K. Mohamed5 1faculty of science helwan university chemistry department 2Chemistry department, Faculty of science, Helwan university. 3Faculty of science Helwan university Department of chemistry and Biochemistry 4Chemistry department, faculty of science, Helwan University 5Chemistry Department, Faculty of Science, Helwan University |
| Abstract |
| Photocatalysis is the most promising eco-friendly, low-cost technique for wastewater remediation. Light irradiation of semiconductors produces electron-hole pairs that initiate the redox reaction via the formation of reactive species, such as superoxide radical (O2 · −), hydroxyl radical (OH·), and hydroperoxyl radical (HOO·). Electron-hole recombination is a fast process, consequently, significant efforts have been dedicated to enhance photocatalysis efficiency by suppressing electron-hole recombination. Metal oxide semiconductors are widely used as photocatalysts due to their abundance, chemical and thermal stability, and tunable band gap energy. Various approaches have been applied to improve the photocatalytic efficiency of metal oxide semiconductors such as doping, coupling with a metal, composite with a carbonaceous compound, and coupling with another semiconductor forming a heterojunction. This study gives a brief overview of some modifications applied for metal oxide semiconductors including metal/metal oxide hybrid, metal oxide/graphene oxide composite, metal oxide /metal oxide heterojunction, and metal oxide/metal chalcogenide heterojunction and their applications in wastewater remediation. |
| Keywords |
| Keywords: Photocatalysis, metal oxide semiconductor, heterojunction, metal/metal oxide hybrid, Wastewater remediation. |
| Status: Abstract Accepted (Poster Presentation) |