摘要
为考察稀土Gd的掺杂对纳米Zn O光催化性能的影响,以醋酸锌和硝酸钆为原料,丙烯酰胺为单体,N,N'-亚甲基双丙烯酰胺为网络剂,过硫酸铵为引发剂,采用高分子网络凝胶法制备得到掺钆(Gd)的Zn O纳米粉体。用制得的粉体对配制的甲基橙溶液进行光催化降解实验,并用X-射线衍射仪、透射电子显微镜、紫外-可见-近红外分光光度计、比表面积与孔隙率分析仪等对其进行表征。结果表明,Gd的掺杂摩尔分数为0.05%时,光催化降解效果最好,高压汞灯下反应1 h,甲基橙的脱色率及COD去除率分别为95.6%和87.4%,而未掺杂的Zn O脱色率和COD去除率分别为85%和77.7%,分别提高了10.6%和9.7%。
In order to investigate the effect of gadolinium dopant on potocatalytic properties of zinc oxide nanoparticles, gadolinium-doped zinc oxide was prepared by polyacrylamide gel method using zinc actate and gadolinium nitrate as raw material, acrylamid as monomer, N,N＇-methylenediacrylamide as lattice reagent and ammonium as initiator. The prepared powder was used for photocatalytic degradation of methyl orange. Analytical methods, such as XRD, TEM, UV-Vis and BET were utilized to characterize the prepared powder. The analysis results showed that nanomaterial reached the maximum photocatalytic effect when the doping amount of mole fraction of Gd was 0.05%, after treatment under high pressure mercury lamp irraditation for one hour, the decolorization rate and COD removal rates of methyl orange were 95.6% and 87.4%, respectively. Meanwhile, the decolorization rate and COD removal rate of the undoped zinc oxide were 85% and 77.7%, respectively, which increased by 10.6% and 9.7%, respectively.
出处
《水处理技术》
CAS
CSCD
北大核心
2016年第3期52-55,共4页
Technology of Water Treatment
基金
国家自然科学基金项目(51272189)
关键词
GD掺杂
纳米氧化锌
光催化
染料废水
gadolinium doped
zinc oxide nanoparticle
photocatalysis
dye wastewater
