A comprehensive review on the application of semiconductor nanometal oxides photocatalyst for the treatment of wastewater

The nanophotocatalytic technology demonstrates an environmentally friendly and sustainable route to overcome environmental and energy issues. The successful production of a nanophotocatalyst depends on four key elements such as light absorption ability, density of active sites, redox capacity, and photoinduced electron-hole recombination rate. Since most intrinsic nanosemiconductor photocatalysts cannot meet all these requirements they are often modified to boost their photocatalytic properties. Many strategies have been adopted to design novel and efficient nanophotocatalysts for diverse applications. Herein, a review is the most efficient of these strategies and methods focused on effectively overcoming the efficiency limitations of nanophotocatalysts to promote their application. Subsequently, a particular aim is put on the most current studies for photocatalytic applications such as pollutant degradation. Finally, it highlights the current advances in photocatalytic principles and mechanisms for environmental pollutants degradation, synthesis, and various methods of nanomaterials, photocatalytic degradation of environmental pollutants by nanophotocatalytic materials, and different enhancement strategies for semiconductor photocatalysis that increase the elimination efficiency of semiconductor nanophotocatalysts. Therefore, it is foreseen that this review will work as a guide for future research and provide a variety of strategies to develop novel and high-performance nanophotocatalysts for various applications.

Preparation and application of semiconductor nanometal oxides photocatalyst for the treatment of wastewater.