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通过溶剂热法合成了花状的AgInS_2微球,采用X射线衍射(XRD)、扫描电子显微镜(SEM)、透射电镜(TEM)、高倍透射电镜(HRTEM)、N_2等温吸脱附和紫外可见漫反射光谱(DRS)手段对所制备的样品进行了表征,同时以K_2Cr_2O_7作为目标降解物研究了AgInS_2微球的光催化性能.光催化降解结果显示,AgInS_2微球可对Cr(Ⅵ)实现高达95.4%的还原率,并保持了较好的结构稳定性,确保固体催化剂具备了良好再循环使用的性能,其高的还原效率是由于其高的结晶度以及大的比表面积可以产生更多的光生电子-空穴对,提供更多的反应活性位点所致.
The flower-like AgInS 2 microspheres were synthesized by solvothermal method. The structure of AgInS 2 microspheres was characterized by X-ray diffraction, scanning electron microscopy, The photocatalytic performance of AgInS_2 microspheres was studied by K_2Cr_2O_7 as target degradants.Results of photocatalytic degradation show that AgInS_2 microspheres can achieve up to 95.4% Cr (Ⅵ) Reduction rate and maintain a good structural stability to ensure that the solid catalyst has a good recycling performance, its high reduction efficiency is due to its high crystallinity and large specific surface area can produce more photo-generated electrons - hole pairs, providing more reactive sites.