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以ZnSO4 、尿素为原料 ,采用均相沉淀法在 90℃合成出了纳米ZnO ,并就反应温度、反应时间、反应物浓度及物料配比等条件对产物的影响进行了探讨 .XRD物相分析 ,产物为六方晶系 ;TEM形貌观察 ,粒子基本为球形 ,平均粒径 2 0nm ;并用IR ,TG DTA等测试手段对其进行了表征 .利用紫外 -可见分光光度计测试了光吸收性能 ,发现纳米氧化锌对 2 0 0～ 380nm波长范围的光有很强吸收性 ,在可见光范围内 ,也有较强的吸收 .利用纳米氧化锌作为光催化剂对有机染料溶液进行了降解实验 ,发现在日光照射 6 0min后 ,对酸性大红 4BE的降解率可达 10 0 %
Using ZnSO4 and urea as raw materials, nano-ZnO was synthesized by homogeneous precipitation at 90 ℃, and the effects of reaction temperature, reaction time, concentration of reactants and the ratio of materials on the products were discussed.XRD phase analysis , The product of the hexagonal system; TEM morphology observation, the particle is basically spherical, with an average particle size of 20nm, and the use of IR, TG DTA and other means of testing it was characterized by UV-Vis spectrophotometer light absorption properties, It was found that nano-ZnO has a strong absorption of light in the wavelength range of 200 ~ 380nm and a strong absorption in the visible light range.The degradation experiments of organic dye solution using nano-ZnO as a photocatalyst showed that in the sunlight After 60min irradiation, the degradation rate of acid red 4BE was up to 100%