Application of BiOX Based Composites in the Field of Energy and Environmental Photocatalysis
At present,as a new class of photocatalysts,BiOX(X=Cl,Br,I)based compounds have received more and more attention.Suitable band gap and tunability of X elements enable BiOX to adapt to a variety of photocatalytic reactions.Its unique layered structure and semiconductor properties of indirect band gap enable BiOX-based composites to exhibit excellent photogenerated electron-hole separation efficiency.Therefore,BiOX-based composite photocatalysts have shown prime activity in many photocatalytic reactions.However,the BiOX material itself still has the disadvantages of weak light absorption capacity and low carrier separation efficiency,so it needs to be modified to obtain BiOX composite materials with stronger catalytic activity.Various modification methods of BiOX based composite photocatalysts are introduced,and the application progresses of BiOX based composite photocatalysts in the field of photocatalytic hydrogen evolution,nitrogen fixation,CO2 reduction and photocatalytic degradation of organic pollutants in wastewater are reviewed.
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