棒状纳米氧化锌的制备及其光催化性能分析

以硫酸锌和尿素为原料、十六烷基三甲基溴化铵为表面活性剂，采用水热法在230℃条件下制备棒状纳米氧化锌。XRD物相分析表明，合成ZnO纳米粒子均为六方晶系纤锌矿结构；SEM形貌观察结果显示，产物为棒状，平均直径约为60～80nm、长度约为260—280nm。水溶液中次甲基蓝染料在棒状纳米ZnO光催化下、pH值8．0时可迅速分解，降解90min时，次甲基蓝的降解率达100％。

Preparation of Bar-like Nano ZnO and Analysis on Its Photocatalytic Property

With ZnSO4 and CO(NH2)2 as the materials and CTAB as the surface active agent,bar-like nano ZnO was prepared at 230 ℃ by hydrothermal method.The phase analysis by XRD showed that the nano-particles of the synthesized ZnO showed hexagonal wurtzite structure.The observation results By SEM showed that the products showed rod-like with average diameter of about 60-80 nm and length of about 260-580 nm.The methylene blue in aqueous solution could decompose rapidly under photocatalysis of bar-like nano ZnO when pH value of the solution was 8.0,and the degradation rate of methylene blue reached 100% after 90 min of degradation.