Abstract
ZnIn2S4/In2O3 composites were prepared by the oil-bath method at a low temperature using metal-organic frameworks (MOFs) as the precursor. The as-synthesized specimens were characterized by the comprehensive utilization of XRD, SEM, UV-vis DRS, and BET. Characterization results proved the composites consisted of In2O3 with micro-columnar structures and ZnIn2S4 nanosheets, the visible-light absorption range and the BET surface area of the composites were larger than the pure In2O3. Besides, the effect of ZnIn2S4 on ZnIn2S4/In2O3 composites was analyzed in detail, the results show ZnIn2S4/In2O3 composites exhibited improved visible-light photocatalytic activities for the degradation of methyl blue (MB), among them, ZnIn2S4/In2O3-1:1 exhibited the highest photocatalytic activity of 75.5%. The improvement of photocatalytic performance could be attributed to the enhanced visible-light absorption range and BET surface area, which improved the visible-light utilization rate and provided more reactive sites for photocatalytic reaction.
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