Recent development on Ag2MoO4-based advanced oxidation processes: a review

Advanced oxidation processes can achieve high degradation levels for various recalcitrant contaminants but the cost of their use in water/wastewater treatment is high. In recent years, more effective catalysts have been developed (such as silver molybdate) to minimize this and other drawbacks, offering a lower band gap and larger operational pH range. Silver molybdate (Ag2MoO4) has attracted attention due to its intriguing electronic properties, diversity of morphologies, and physico-chemical characteristics. Even more recently, catalytic activity in photocatalysis, Fenton-like processes, electrocatalysis and disinfection has been reported, highlighting the potential for its use in a broad range of important fields of application, including water and wastewater treatment. This paper provides a brief history of this semiconductor, mainly focusing on the current state of knowledge and the remaining challenges in terms of its synthesis (particularly obtaining the metastable tetragonal alpha-phase), properties and characterization. The application of Ag2MoO4 as a catalyst for application in advanced oxidation processes is also addressed.

Automated summary

This paper introduces the potential of silver molybdate (Ag2MoO4) as a catalyst in water/wastewater treatment, emphasizing its intriguing electronic properties and diverse morphologies, while also mentioning the current challenges in synthesis, properties, and characterization.