Eu掺杂ZnO光催化剂降解垃圾渗滤液实验研究

Study on Eu Doped ZnO Photocatalytic Degradation of Landfill Leachate

以醋酸锌(Zn(CH3COO)2)、六水合硝酸铕(Eu(NO3)3·6H2O)、氢氧化钠(Na OH)、聚乙二醇(PEG2000)、柠檬酸为主要原料,采用水热法制备Eu掺杂Zn O复合纳米棒光催化材料粉体。用制备的粉体对城市垃圾渗滤液进行光催化降解实验,研究了反应温度、反应时间、光照条件、掺杂比对其光催化氧化效果的影响,用XRD、TEM、EDS等测试手段对粉体进行了表征。研究结果表明,水热反应温度160℃,时间为6 h,制备的3%Eu掺杂Zn O复合纳米棒的光催化效果较好,在365 nm紫外灯照射下,150 min后垃圾渗滤液的脱色率达40%,COD降解率达62%。

In this paper,Europium- doped zinc oxide（ Eu · Zn O） nano- particles are prepared by hydrothermal method using Zn（ CH3COO）2,Eu（ NO3）3·6H20,Na OH,PEG2000,Citric acid as precursors. Powder prepared is used to conduct photocatalytic degradation experiments for landfill leachate and the effects of reaction temperature,reaction time,illumination conditions,doping on the photocatalytic oxidation are studied. And the powder is characterized by using XRD,SEM,EDS and other test methods. The results show that the prepared Eu doped Zn O of 3% is better when hydrothermal time is 6 h and hydrothermal temperature 160 ℃. In the 365 nm of UV irradiation for 150 mins,the decolorization rate of garbage leachate and the degradation rate of COD can reach 40% and 62% respectively.