纳米NiO光催化剂性质对降解亚甲基蓝染料的影响  

Effects of Catalyst Characters on the Photocatalytic Activities of NiO Nanoparticles in the Degradation of Methylene Blue

作　　者：袁梦[1] 万霞[1] 铁绍龙[1] 

机构地区：[1]华南师范大学化学与环境学院,广东广州510006

出　　处：《华南师范大学学报（自然科学版）》2013年第1期62-67,共6页Journal of South China Normal University(Natural Science Edition)

基　　金：广东省自然科学基金项目(031505)

摘　　要：采用水热合成并辅助以高温煅烧的方法,获得了系列不同形貌和大小的纳米NiO样品,通过SEM、XRD、TG和UV-vis等方法进行性质表征.使用不同性质的NiO样品做催化剂,在紫外光(UV)照射下降解亚甲基蓝(MB)的研究表明,由强碱NaOH与镍盐反应获得前驱体,再经600℃煅烧得到的NiO光催化剂,有晶体结构完整,粒径小,比表面积大,紫外吸收强,光照下产生的羟基自由基OH-含量高,降解效率最好.By hydrothermal method combining a calcination process, phologies and sizes were synthesized. The properties of NiO samples UV - vis analysis. In the photodegradation of methylene blue （MB） the NiO nano- catalysts with different mor- were characterized by SEM, XRD, TG and under UV- light irradiation on NiO surface, the result showed that the NiO sample which was synthesized by the reaction of nickel nitrate with sodium hydroxide and calcination at 600 ℃ exhibits the highest photocatalytic activity in all of as - prepared NiO samples. This is be- cause the NiO has a small particle size, large surface area, and intense UV absorption, inducing the increase of hy- droxy radical OH · and the enhance of degradation efficiency

关 键 词：水热合成 纳米NIO 降解亚甲基蓝 光催化 

分 类 号：O614.81[理学—无机化学]