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采用无水液相体系醇解溶胶-凝胶法制备ZnO/CdSe-ZnO纳米材料。利用IR和XRD对其进行了表征。结果表明,在温度为140℃、乙酸锌二水的体积分数为10%制备得到的ZnO纳米材料纯度较高。XRD说明产物为六方纤锌矿结构ZnO,衍射峰尖锐,结晶性良好。以有机染料废水作为模拟降解对象研究其光催化性能。因该制备方法直接生成的产物为金属氧化物,故无需锻烧,这避免了由于锻烧导致的粒子形成的二次团聚,使制备纳米粒子的粒径可控。此实验致力与探索具有操作简单、无水体系、自然风干免煅烧、不对产物进行任何处理等特点的制备ZnO/CdSe-ZnO方法。
ZnO / CdSe-ZnO nanomaterials were prepared by alcohol sol-gel method in anhydrous liquid phase. It was characterized by IR and XRD. The results show that ZnO nanomaterials prepared at 10% volume fraction of zinc acetate dihydrate at 140 ℃ have higher purity. XRD shows that the product is hexagonal wurtzite structure ZnO, sharp diffraction peak, good crystallinity. The photocatalytic performance of organic dye wastewater was studied as a simulated degradation target. Because the product directly produced by the preparation method is a metal oxide, no calcination is needed, which avoids the secondary agglomeration of the particles formed by the calcination, so that the particle size of the prepared nanoparticles can be controlled. This experiment is devoted to exploring the preparation of ZnO / CdSe-ZnO method with simple operation, anhydrous system, air-dry and calcination without any treatment of the product.