Silver-containing visible-light photocatalysts including silver-containing non-metal compound, silver-containing multi-metal oxide and other silver-containing composites, have attracted more attention due to their high catalytic activities for oxidation and reduction ability under visible light irradiation. This paper summarizes the research achievements on silver-containing oxides photocatalysts. Silver oxide with a narrow energy gap is a kind of high efficient photocatalysts with photosensitive and unstable properties. In order to overcome the above problems, it is the efficient way to incorporate p/d/s-block non-metal and metal elements to improve photocatalystic activities by hybridizing orbitals. The properties of Ag₂O, Ag₃PO₄, Ag₂CO₃, Ag₆Si₂O₇ and silver-containing multi-metal oxides are introduced in detail. The photocatalystic activities and stability of some composites based on the silver-containing oxides are improved further through forming heterojunction structure and adjusting energy band structure. Finally, some feasible ways to design and improve the visible-light responding photocatalysts are concluded, and the development of silver-containing oxides semiconductor photocatalysts is also proposed.

Contents
1 Introduction
2 The application of silver in the synthesis of photocatalysts
3 Silver oxide and silver oxide based composite
4 Silver-containing non-metal compound/multi-metal oxides and photocatalytic mechanism
4.1 Silver-containing non-metal compound and composite
4.2 Silver-containing multi-metal oxides and composite
5 Other silver-containing composite photocatalysts
6 Conclusion