Advances in metal-based vanadate compound photocatalysts: synthesis, properties and applications

Abstract

Among the ongoing research on photocatalysis under visible-light, it has been shown that doped or hybrid catalysts are more active than a single catalyst alone. However, problems including visible light absorption, a low quantity of energetic sites on surfaces, and rapid recombination of the photo-electron hole pair produced by light have prohibited photocatalysts from being used in a practical and widespread manner. To overcome these problems, synthesis of nanostructure hybrid catalyst using several methods has attracted much attention. Several procedures have been suggested for the preparation of photocatalysts with the desired structure and morphology. Preparation methods similar to partial modification may lead to diverse structures and qualities. In this regard, the development of efficient, low-cost photocatalysts and rapid synthesis is the most important issues that should be considered. This review discusses various methods and mechanisms that work with the modification of vanadium compounds as photocatalysts to progress their photocatalytic efficiency. In addition, the effects of synthesis temperature, solution pH and concentration on the photocatalytic performance are also described in detail.

LaVO4 with alkali metal doping for enhanced photocatalytic water splitting

“…It is an inexpensive photocatalysis material with an appropriate electronic band structure and relatively stable physicochemical properties. 5,6 Wei et al proposed an oxygen vacancy (Ov)-rich LaVO 4 (LaVO 4 -Ov) catalyst that can effectively dehydrogenate undiluted ethane through the comediated mechanism of a dynamic lattice oxygen (Olatt.) and Ov, thereby increasing the photocatalytic efficiency.…”

Synthesis of Spherical Copper Oxide Nanoparticles by Chemical Precipitation Method and Investigation of Their Photocatalytic and Antibacterial Activities

“…Recently, magnetic-MXene-based nanocomposites were also used in photodegradation [15]. Further, the photocatalytic activity of metal-based compounds was also assessed [16]. There are a good number of studies on the abovementioned metal oxides.…”

New strategies in the preparation of binary g-C3N4/MXene composites for visible-light-driven photocatalytic applications

“…Regardless, efforts have been made to optimize its photoelectric properties, and increase visible spectrum absorption and charge separation efficiency [14]. Therefore, several experiments have been designed to increase the efficiency of g-C3N4 by making binary or ternary composites with compounds such as BiVO 4 , InVO 4 , AgVO 3 , V 2 O 5 , TiO 2 , and ZnO [15][16][17][18][19]. Another strategy that has been significantly explored is the non-metallic elemental doping of O, S, N, and P, which are used as cocatalysts.…”