摘要
以乙酸锌[Zn(CH3COO)2.2H2O]、氢氧化锂(LiOH.H2O)、氯化铕(EuCl3)和氯化铝(AlCl3.6H2O)为原料,采用溶胶-凝胶法制备了铕铝共掺纳米ZnO,并用X射线衍射光谱、傅立叶红外光谱、紫外-可见吸收光谱、电子能谱、透射电子显微镜对其进行了表征。用紫外灯作为光源,一定浓度的偏二甲肼溶液为光催化反应模型降解物,研究了铕铝共掺ZnO的光催化性能并与纯ZnO和单掺铕ZnO进行比较,考察了铕铝掺杂比例对降解率的影响。结果表明,铕铝共掺ZnO比单掺铕ZnO具有更高的光催化活性且都比纯ZnO为高。铕铝摩尔比为0.4时,铕铝共掺纳米ZnO的光催化性能最好,在紫外光下10 mg铕铝共掺纳米ZnO对浓度为20mg/L的偏二甲肼溶液100 ml降解75 min的降解率达到94.28%。
Eu- A1 co- doped ZnO is prepared via sol- gel method with zinc acetate dehydrate, lithium hydroxide, Eu chloride and aluminum chloride used as the raw materials. The samples are characterized by means of X - ray diffraction, infrared absorption spectroscopy, UV - Vis spectroscopy, photoelectron spectrum and transmission electron microscope. The photocatalytic performance of different Eu - A1 co - doped ZnO sam- ples is studied by using ultraviolet lamp as the illumination device and unsymmetrical dimethyl -hydrazine as the stimulant pollutant. Effect of the amount of Eu and A1 as well as their doping rate is studied. Results show that Eu - A1 co - doped ZnO has higher photocatalytic ability than Eu - doped ZnO and pure ZnO. The sample co- doped with Eu and A1 achieves the best photocatalytic performance with the mole ratio being 0.4. Under UV - light, the highest degradation rate of UDMH can reach 94.28%.
出处
《内蒙古工业大学学报（自然科学版）》
2012年第1期24-28,共5页
Journal of Inner Mongolia University of Technology：Natural Science Edition
关键词
溶胶-凝胶
偏二甲肼
光催化降解
铕铝共掺杂
氧化锌
sol - gel, unsymmetrical dimethyl - hydrazine, photocatalytic degradation, Eu - A1 co - doped.
