Organic Wastewater Treatment using Two-dimensional Graphene-based Photocatalysts: A Review

Kelvert Kong (School of Energy and Chemical Engineering, Xiamen University Malaysia, Jalan Sunsuria, Bandar Sunsuria, 43900 Sepang, Selangor Darul Ehsan)
Zhiying Zhu (School of Energy and Chemical Engineering, Xiamen University Malaysia, Jalan Sunsuria, Bandar Sunsuria, 43900 Sepang, Selangor Darul Ehsan)
Mukhamad Nurhadi (Department of Chemical Education, Universitas Mulawarman, Kampus Gunung Kelua, Samarinda, 75119, East Kalimantan)
Sumari Sumari (Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Negeri Malang, Jl. Semarang No. 5 Malang, 65145)
Siew Fan Wong (School of Engineering, Asia Pacific University of Technology and Innovation, Jalan Teknologi 5, Taman Teknologi Malaysia, 57000 Kuala Lumpur, Wilayah Persekutuan Kuala Lumpur)
Sin Yuan Lai (School of Energy and Chemical Engineering, Xiamen University Malaysia, Jalan Sunsuria, Bandar Sunsuria, 43900 Sepang, Selangor Darul Ehsan||Malaysia College of Chemistry and Chemical Engineering, Xiamen University, 361005 Xiamen)

Bulletin of Chemical Reaction Engineering & Catalysis
2023: BCREC Volume 18 Issue 3 Year 2023 (October 2023)

Photocatalysts have gained enormous attention in water decontamination due to their economic viable and intriguing properties. Recently, graphene-based semiconductors have become the sparkling star on the horizon of material science. The coupling of two-dimensional graphene and its derivatives (graphene oxide and reduced graphene oxide) with semiconductors could effectively enhance the efficiency in organic wastewater degradation under light irradiation. Hence, a collective study on this topic is necessary.  Four types of graphene-based semiconductors, viz. titania, zinc oxide, cadmium sulfide, and bismuth oxychloride, are explored. Besides, synthesis approaches and properties of these photocatalysts are elucidated too. We hope this review could enable us to rationally design and harness the morphology, structure and electronic properties of these advanced materials. Copyright © 2023 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).