【摘要】 以ZnSO4 为原料 ,采用水热法在 180℃ ,1MPa以下合成出了纳米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 30nm ;利用紫外 -可见分光光度计测试了光吸收性能 ,发现纳米ZnO对2 0 0～ 380nm波长范围的光有很强的吸收性 ,在可见光范围内 ,也有较强的吸收 .利用纳米ZnO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 70min后 ,对酸性黑 2 34的降解率可达 10 0 % .更多还原

【Abstract】 Using ZnSO 4 and NH 3·H 2O as the raw materials, nanometer ZnO is prepared at 180 ℃,1 MPa by hydrothemal method. The effects of the reaction temperature, time and concentration on the nanometer ZnO are discussed. XRD shows that the product is ZnO with hexagonal structure .TEM measurement indicates that the ZnO is spherial particles,and the average diameter of the particles is 30 nm. The UV light absorbent properties are detected by UV spectrophotometer. The results show that the nanometer ZnO has stronger absorption at 200～370 nm and at the visible region . Photodegradation of dyes in an aqueous solution is investigated using nanometer ZnO as a photocatalyer.The results show that after 70 minutes illumination, the decolorization rate of the acidic black dye 234 # is almost 100%.更多还原