标题:
氨水量对微波制备花状ZnO光催化性能的影响Effect of Precursor Ammonia on Photocatalysis of Flower-Like ZnO Microstructures Prepared by Microwave Method
作者:
刘冬, 马青兰, 黄远明
关键字:
微波法, 花状ZnO, 形貌, 光催化Microwave Method; Flower-Like ZnO; Morphology; Photocatalysis
期刊名称:
《Optoelectronics》, Vol.3 No.4, 2013-12-17
摘要:
通过一种简便高效的微波法在不同氨水量下制备了花状ZnO。采用X射线衍射仪(XRD)、扫描电子显微镜(SEM)及光致发光光谱仪(PL)对产物的结构、形貌以及光学特性进行表征。发现此种方法制备的ZnO为微米量级，花状结构是由一系列底部粗、顶部细的纳米棒组合而成，光致发光显示有很强的绿光发光峰。光催化测试表明ZnO对甲基橙有较强的降解作用，1小时的降解率约95%。氨水量对ZnO的结构形貌有影响，对光致发光和光催化效果无明显影响。Flower-like ZnO was prepared by using a simple and efficient microwave method in different amount of ammonia. The structure, morphology and optical properties of the products were characterized by XRD, SEM and PL. It was found that ZnO prepared by this method was micro dimension. Flower-like structure was consisted of a series of the thick bottom and thin top nanorods; photoluminescence showed a strong green emission peak. Photocatalytic meas- ure showed that ZnO had a strong function of degradation on methyl orange, and the degradation rate is about 95% after 1 hour. The amount of ammonia had effects on structure and morphology of ZnO, but had no significant effects on pho- toluminescence and photocatalysis.