摘要
本研究以La2O3和Ti O2为前驱体,采用煅烧法制备了La2O3/TiO2光催化剂,并对La2O3/TiO2进行了扫描电镜、X-射线衍射、光致发光光谱、紫外-可见漫反射、红外光谱表征。以亚甲基蓝为光催化降解的模型化合物,考察了La2O3含量、煅烧温度、催化剂用量对La2O3/TiO2光催化性能的影响。结果表明,在0.040~0.150 g之间,随着催化剂用量的增加,降解底物的降解率也随之提高。当催化剂用量为0.150 g、亚甲基蓝浓度为5 mg/L、亚甲基蓝体积为300 mL时,光照60 min后,亚甲基蓝的降解率可达90.1%。
La2O3/TiO2 photocatalysts were prepared by calcining with La2O3 and TiO2 as precursors,and La2O3/TiO2 photocatalysts were characterized by scanning electron microscopy,X-ray diffraction,photoluminescence spectrum,ultraviolet-visible diffuse reflection and infrared spectrum.The effects of La2O3 content,calcination temperature and catalyst amount on the photocatalytic performance of La2O3/TiO2 were investigated with methylene blue as photocatalytic degradation model compound.The results showed that the degradation rate of degraded substrates increased with the increase of catalyst dosage between 0.040 and0.150 g.When the catalyst dosage is 0.150 g,the methylene blue concentration is 5 mg·L-1 and the volume of the methylene blue is 300 mL,the degradation rate of methylene blue can reach 90.1%after 60 minutes of light.
作者
胡丹丹
胡向阳
殷榕灿
张颖
崔玉民
HU Dandan;HU Xiangyang;YIN Rongcan;ZHANG Ying;CUI Yumin(School of Chemistry and Materials Engineering,Fuyang Normal University,Fuyang Anhui 236037,China;Anhui Provincial Key Laboratory for Degradation and Monitoring of Pollution of the Environmen,Fuyang Normal University,Fuyang Anhui 236037,China)
出处
《阜阳师范大学学报（自然科学版）》
2020年第4期27-32,共6页
Journal of Fuyang Normal University:Natural Science
基金
安徽省高校自然科学研究重点项目(KJ2018A0340)
安徽省自然科学基金项目(2008085QB93)
阜阳师范大学横向合作科研项目(XDHX201737,XDHXPT201702)
阜阳师范大学博士科研启动费项目(2019KYQD0002)
安徽省大学生创新创业计划项目(S201910371030)资助。
关键词
二氧化钛
三氧化二镧
亚甲基蓝
光催化
titanium dioxide
lanthanum trioxide
methylene blue
photocatalytic
