摘要
以乙酸锌和氢氧化锂为原料,采用溶胶凝胶法制备了纯纳米ZnO和掺钕ZnO,并用X射线衍射、紫外可见吸收光谱、X射线能谱仪、透射电镜对其进行了表征.用15 W紫外灯作为光源,一定浓度的偏二甲肼污水为光催化反应模型污染物,研究了ZnO的光催化性能,考察了钕掺杂量对降解率的影响.结果表明,掺杂钕离子提高了ZnO的光催化活性,钕锌摩尔比为0.025时光催化性能最好;在30℃下,当加入催化剂质量浓度为0.1 g/L,降解时间为100 min时,对偏二甲肼污水(UDMH)的降解率达到92%.
Pure ZnO and Nd-doped ZnO were prepared via sol-gel method with zinc acetate dehydrate and lithium hydroxide monohydrate as raw material.The samples were characterized by means of X-ray diffraction,X-ray energy spectrum,UV-Vis spectroscopy and high resolution transmission electron microscope.The photocatalytic performance of different ZnO particles was studied using 15W ultraviolet lamp as the illumination device and unsymmetrical dimethyl-hydrazine as the stimulant pollutant.Effect of the amount of Nd was investigated.The results indicated that doping improved the photocatalytic performance of ZnO,the most active mole ratio being 0.025.When the reaction temperature was 30℃,the degradation rate of UDMH could reach 92% by catalysis of 0.1g/L in 100min.
出处
《北京理工大学学报》
EI
CAS
CSCD
北大核心
2009年第3期266-269,共4页
Transactions of Beijing Institute of Technology
基金
高等学校学科创新引智计划(B07012)
关键词
溶胶凝胶
偏二甲肼
光催化降解
钕掺杂
sol-gel
unsymmetrical dimethylhydrazine
photocatalytic degradation
Nd-doped
