Graphene-Based Photocatalysts for the Elimination of Pollutants in Water

Kumar, Ajay; Ramirez, Irwing; Chaudhary, Priyanka; Kumar, Kuldeep; Sharma, Munish and Rana, Rohit (2023). Graphene-Based Photocatalysts for the Elimination of Pollutants in Water. In: Kumar, Neerj; Gusain, Rashi and Sinha-Ray, Suprakas eds. Two-Dimensional Materials for Environmental Applications. Springer Series in Materials Science, 332. Springer, pp. 161–177.



Water is an essential part of living things as the life cycle, and water cycle are inextricably linked. The development of industrialization caused the water to become hazardous by emitting dyes, pollutants, organic wastes and other harmful chemicals into the water bodies. It’s a big challenge to treat wastewater for human health and to preserve the ecosystem. In recent years, graphene-based photocatalytic materials have gained much attention to eliminate liquid pollutants. This is due to the tremendous optical, electrical and physicochemical properties of this unique two-dimensional material. On integration with other semiconducting, metallic or polymeric materials, graphene remarkably boosts the photocatalytic activity of materials toward contaminants destruction. The high charge carrier mobility, high surface area and excellent mechanical strength of graphene-based nanocomposites make them suitable for photocatalytic applications. This book chapter will focus on the recent significant advances in developing graphene-based photocatalytic materials. The principle of photocatalysis, the basic properties of graphene and the mechanism of how the photocatalytic efficiency against the removal of the liquid pollutant can be enhanced when coupled with graphene has been discussed in this book chapter. Furthermore, current challenges and future recommendations for developing graphene-based photocatalysts are also discussed.

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