Review on metal oxide for photocatalysis based green strategies for organic pollutant removal from aquatic environment

Abstract

There have been review about modifications of metal oxides synthesis, characterization, and applications over the last 10 years approximately 35000 journals from Sciencedirect.com as data sources for metal oxide synthesis as photocatalysts. From a search engine of 35,000 journals discussing this matter, the filtering process in specific areas involved green and chemical environmental methods with the results of about 145 journals. Then a specific assessment was carried out that referred to natural molecular and non-toxic processes and improved the photocatalytic properties of the oxide to produce 19 comprehensively reviewed journals. The aim of this metal is to determine the potential of plant extracts or natural sources as support system agents in the synthesis of oxides from previously published journals by researchers. The properties of (solid) nanomaterials for photocatalyst applications from the last 10 years trend to produce catalysts with relatively good physical, electronic or chemical characteristics compared to previous strategies in semiconductor production. This study is not only a wider field of view in the development of the discovery of metal oxide nanoparticle catalysts but also useful for increasing the efficiency of photocatalysts for various applications in organic waste treatment. Modifications on the surface can be carried out using nature-based methods with the aim of improving various surface characteristics involving surface energy, and reactivity as well as charge kinetics, active sites, biocompatibility, and hydrophilicity to control physicochemical developments in photocatalysis. Keyword: metal oxide, synthesis, photocatalysts, green method