Enhanced visible light photocatalytic activity and mechanism of ZnSn(OH)6 nanocubes modified with AgI nanoparticles
•AgI/ZSH was synthesized by a facile deposition–precipitation method at room temperature for the first time.•The composite exhibited much superior photocatalytic activity.•AgI loading, catalysts dosage and initial dye concentration were investigated in detail.•High mineralization ability and photostability were achieved.
Novel visible-light-driven photocatalyst AgI/ZnSn(OH)6 (AgI/ZSH) was synthesized by a facile deposition–precipitation method. The effect of several parameters such as the AgI loading, catalysts dosage and initial dye concentration on the photodegradation of rhodamine B (RhB) was investigated. The degradation efficiency of RhB could be almost 100% within 40 min and the removal rate of TOC reached 91% within 60 min at 20% AgI/ZSH dosage 1 g/L, which was 34 and 4.6 times of ZSH and AgI, respectively. The enhanced photoactivity of AgI/ZSH should be contributed to the faster separation of electron–hole pairs with ZSH as an electron trap.
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Journal: Catalysis Communications - Volume 73, 5 January 2016, Pages 1–6