上海科技大学知识管理系统

本发明提供了CuInS2量子点、CuInS2//ZnS量子点及其制备和应用。所述的CuInS2量子点的制备方法，其特征在于，包括：步骤1：将铜源化合物、铟源化合物和谷胱甘肽加入水中，调节pH为7-10，得到混合液A，加入含有硫源化合物的水溶液，得到混合物B；步骤2：将混合物B升温至70-100℃并在此温度下搅拌2-4h后冷却，加入乙醇，离心分离，纯化，得到CuInS2量子点。本发明的量子点光催化剂毒性较低，具有在无共催化剂的条件下实现高效的光解水制氢的能力，具有良好的可见光吸收性质，在可见光波段的光催化制氢量子效率可达10％左右。

The invention provides CuInS2 quantum dots, CuInS2//ZnS quantum dots and their preparation and application. A preparation method of the CuInS2 quantum dots is characterized by comprising the steps of 1, adding a copper-source compound, an indium-source compound and glutathione into water, adjusting pH to 7-10 to obtain mixed liquid A, and adding an aqueous solution containing a sulfur-source compound to obtain mixture B; 2, heating the mixture B to 70-100 DEG C, stirring at this temperature for 2-4 h, cooling, adding ethanol, centrifugally separating, and purifying to obtain the CuInS2 quantum dots. A quantum dot photocatalyst obtained herein has low toxicity, is able to produce hydrogen by water photocatalysis under zero co-catalysts, has good visible light absorption, and reaches about 10/% of quantum efficiency in hydrogen production by photocatalysis at visible light band.