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使用氯化锌和精氨酸作为反应物,通过简单的微波水热技术制备花状纳米氧化锌。利用X射线衍射(XRD)和扫描电镜(SEM)对所合成的纳米氧化锌进行晶体结构和形貌的表征。通过拉曼光谱和光致发光(PL)光谱对纳米氧化锌的光学性能进行研究,证实了合成物为高结晶度的纳米氧化锌。在紫外光辐射下,合成的ZnO光催化降解亚甲基蓝(MB)有较好的效果,紫外光催化2h后亚甲基蓝的降解率达到95.60%。ZnO光催化降解亚甲基蓝可以描叙为一级动力学反应,降解速率常数在1.0675～1.6275h-1的范围中,这与所合成的ZnO形貌有关。
Using zinc chloride and arginine as reactants, flower-like nano zinc oxide was prepared by a simple microwave hydrothermal technique. The crystal structure and morphology of the synthesized ZnO nanowires were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The optical properties of nano-ZnO were studied by Raman spectroscopy and photoluminescence (PL) spectroscopy. The results showed that the composite was nano-ZnO with high crystallinity. Under UV irradiation, the synthesis of ZnO photocatalytic degradation of methylene blue (MB) has a good effect, UV degradation of methylene blue after 2h 95.60%. The photocatalytic degradation of methylene blue by ZnO can be described as a first-order kinetic reaction with a degradation rate constant in the range of 1.0675 ~ 1.6275h-1, which is related to the ZnO morphology synthesized.