摘要
以Ce(NO3)3·6H2O为铈源,酸性橙7(AO7)为碳源,通过水热-煅烧法合成了CeO2@C催化剂.利用FT-IR,XRD,Raman,XPS,UV-VIS,SEM等技术对合成样品的结构、形貌进行了表征,证明制得的CeO2@C为萤石面心立方结构,具有类圆形外形.以AO7为探针分子对合成的CeO2@C光催化性能进行评价,并考察了AO7使用量、水热温度、煅烧温度等因素对光催化效率的影响.结果表明,在Ce(NO3)3·6H2O与AO7质量百分比为145∶1,水热温度为180 ℃,煅烧温度为600 ℃时合成的CeO2@C对AO7的光催化效率最好.
Abstract
CeO2@C was synthesized by hydrothermal and calcination method using Ce(NO3)3·6H2O as cerium source and acid Orange 7(AO7)as carbon source.The structure and morphology of the synthesized samples were characterized by FT-IR,XRD,Raman,XPS,UV-VIS and SEM techniques and the results show that the resulted CeO2@C is fluorite face-centered cubic structure and has a similar circular shape.AO7 was used as the probe molecule to evaluate the photocatalytic activity of the prepared CeO2@C and the effects of AO7 content,hydrothermal temperature and calcination temperature on the photocatalytic activity of the resulted catalyst were investigated.The results show that the synthesized CeO2@C performs the best photocatalytic activity when the mass percentage of Ce(NO3)3·6H2O and AO7 is 145∶1,the hydrothermal temperature is 180 ℃,and the calci-nation temperature is 6OO ℃.
基金项目
国家自然科学基金(21876158)
浙江省金华市重点科技项目(2022-1-077)
浙江省大学生科技创新活动计划(新苗人才计划)(2023R404052)
NETL
NSTL
万方数据