摘要
以Ce(NO3)3·6H2O为铈源,采用水热合成法制备了Ce O2纳米球催化剂,利用N2吸附-脱附、X射线粉末衍射、扫描电镜等技术对其进行了表征,并以甲基橙(MO)为模拟污染物评价了Ce O2纳米球的光催化性能,探讨了催化剂加入量、甲基橙初始浓度、p H值、H2O2的添加对Ce O2纳米球光催化性能的影响。结果表明,采用水热合成法制备了Ce O2纳米球光催化活性高于尿素共沉淀法制备的Ce O2纳米粒子;当甲基橙的初始浓度为10 mg/L,催化剂用量为1 g/L,p H值6.2,光照3 h后,甲基橙降解率为75%。
CeO2 nanospheres were synthesized by a hydrothermal method using Ce（NO3 ） 3 ·6H2 O and ammonia as precur-sors. The CeO2 nanospheres were characterized by N2 adsorption - desorption, X-ray diffraction, and scan electron microscopy. The photodegradation of methyl orange catalyzed by CeO2 nanospheres were studied under UV irradiation. The effect of catalyst amount, initial MO concentration, initial pH value, and H2 O2 were studied and the obtained results indicated that CeO2 nanospheres showed higher photocatalytic activity than CeO2 nanoparticles and 75 % degradation was obtained with 1. 0 g/ L CeO2 nanospheres at pH 6. 2 within 3 h.
出处
《阜阳师范学院学报（自然科学版）》
2015年第2期41-45,共5页
Journal of Fuyang Normal University(Natural Science)
基金
安徽省教育厅自然科学基金项目(KJ2013Z266)
环境污染物降解与监测安徽省重点实验室委托专项(2011HJJC04YB
2012HJJC02
2014HJJC03)资助
关键词
CEO2
纳米球
水热法
光催化
甲基橙
ceria
nanosphere
hydrothermal method
photodegradation
methyl orange
