Department of Physics, Sri Sivasubramaniya Nadar College of Engineering, Chennai, 603 110, India.
Department of Physics, Sri Sivasubramaniya Nadar College of Engineering, Chennai, 603 110, India.
Chemosphere. 2022 Aug;300:134391. doi: 10.1016/j.chemosphere.2022.134391. Epub 2022 Mar 31.
Water is the lifeblood of all living things; we often overlook the fact that the water cycle and the life cycle are inextricably linked. However, it has become contaminated as a result of industrialization, which has impacted the ecosystem by emitting numerous dyes, organic solvents, petroleum products, heavy metals, chemicals, diseases, and solid wastes. The absence of treatment in reusing wastewater is the root of the issues. Hence it is essential to treat the water to preserve the ecosystem and also for human health. In recent years, graphene-based photocatalysts are attracted much in the waste water treatment process due to their outstanding physical, chemical, and mechanical properties. Since in the graphene-based photocatalyst, graphene has exceptional electron conductivity, a broad range of light absorption, a large surface area, and a high adsorption capacity. When it is integrated into metals, metal-containing nanocomposites, semiconductor nanocomposites, polymers, MXene, and other compounds, it can greatly boost the photocatalytic activity towards the photo destruction of contaminants. Hence in this review, water pollution, methods of waste water treatment, fundamental principles of photocatalysis, the photocatalytic activity of other materials in wastewater treatment, and how the photocatalytic efficiency against the removal of organic dyes can be enhanced when coalesced with graphene are detailed.
水是所有生物的生命线；我们常常忽略这样一个事实，即水循环和生命周期是紧密相连的。然而，由于工业化，水已经被污染，工业排放了大量的染料、有机溶剂、石油产品、重金属、化学品、疾病和固体废物，从而影响了生态系统。在废水再利用中缺乏处理是问题的根源。因此，处理水对于保护生态系统和人类健康都是至关重要的。近年来，由于其出色的物理、化学和机械性能，基于石墨烯的光催化剂在废水处理过程中引起了广泛关注。在基于石墨烯的光催化剂中，石墨烯具有优异的导电性、广泛的光吸收、大的表面积和高的吸附能力。当它与金属、含金属纳米复合材料、半导体纳米复合材料、聚合物、MXene 和其他化合物结合时，可以极大地提高光催化活性，从而促进污染物的光破坏。因此，在这篇综述中，详细介绍了水污染、废水处理方法、光催化的基本原理、其他材料在废水处理中的光催化活性，以及与石墨烯结合如何提高光催化效率以去除有机染料。
