ZnO纳米片的室温绿色法制备及光催化性能研究  

Room temperature preparation of ZnO nanosheets by an environmental friendly method and their photocatalytic properties

作　　者：刘哲[1] 李庆[1] 林华[1] 覃礼钊[1] 李元[1] 聂明[1] 解国猛 LIU Zhe LI Qing LIN Hua QIN Lizhao LI Yuan NIE Ming XIE Guomeng(Faculty of Materials and Energy, Southwest University, Chongqing 400715,China)

机构地区：[1]西南大学材料与能源学部,重庆400715

出　　处：《功能材料》2016年第B06期217-222,共6页Journal of Functional Materials

基　　金：重庆市自然科学基金重点资助项目(cstc2012jjB50011);重庆市自然科学基金资助项目(cstc2013jcyjA50015);中央高校基本科研业务费专项资金资助项目(XDJK2016C003)

摘　　要：以聚乙二醇为表面活性剂,在室温下采用简便、高效、环保的均匀沉淀法制得ZnO纳米片,并用XRD、SEM、TEM、UV-Vis等方法对产物进行了表征。研究表明,ZnO纳米片平均直径为300nm,平均厚度约为40nm,产物形貌规则且分散均匀,结晶性良好。通过对ZnO纳米片形成机理和实验条件进行系统探讨,提出了三步反应机理。发现聚乙二醇对产物的形貌和尺寸起着关键作用,反应温度对其也有着重要影响。通过甲基橙光催化实验,发现ZnO纳米片具有优良的光催化性能,在日光照射2h下对甲基橙溶液的脱色率可达99.3%。该法简便、绿色、快捷,具有良好的工业化生产前景,并可推广于其它纳米功能材料的制备。With PEG-1000 as the surface active agent,ZnO nanosheets were prepared using a convenient,effi-cient and environmental friendly method at room temperature.The products were characterized by XRD,SEM, TEM,UV-Vis.The results show that the average diameter of the products is 300 nm,the average thickness is about 40 nm.The products were uniform nanosheets,which have good crystallinity.The mechanism of the for-mation of ZnO nanosheets and the experimental conditions were discussed.It was found that the PEG-1 000 was the key factor effecting the morphology and size of the products.Besides,the temperature had important influ-ence on the products.The photocatalytic experiments shown that the as-prepared ZnO nanosheets had excellent photocatalytic properties.The photocatalytic degradation of methyl orange mediated by the as-prepared ZnO nanosheets under sunlight irradiation reached 9 9 .3%.This method is convenient,green,fast and has a good prospect of industrial production.It can also be used in the preparation of other nanomaterials.

关 键 词：ZNO 纳米片 绿色制备法 光催化 

分 类 号：TB34[一般工业技术—材料科学与工程]