摘要
以偏钒酸铵为钒源,对二氧化钛进行不同比例钒掺杂改性。以对甲醛的降解效率为指标,对钒掺杂比例、煅烧温度、pH值等因素进行探究。结果表明,最佳钒改性掺杂比例为nV∶nTi=1∶100,最佳煅烧温度为500℃,甲醛溶液最佳pH值为5,光照180min后催化剂对甲醛的降解率最高,可达93.4%。
Ammonium metavanadate was used as vanadium source to modify TiO 2 by vanadium doping in different proportions.Taking the degradation efficiency of formaldehyde as an index,the factors such as vanadium doping ratio,calcination temperature and pH value were studied.The results showed that the optimum vanadium modification doping ratio was n V∶n Ti=1∶100,the optimum calcination temperature was 500℃,the optimum pH value of formaldehyde solution was 5,and the degradation rate of formaldehyde was the highest after 180 minutes of illumination,reaching 93.4%.
作者
田松
苏敏
王霞
TIAN Song;SU Min;WANG Xia(School of Materials and Chemical Engineering,Tongren University,Guizhou554300,China)
出处
《黑龙江科学》
2019年第18期20-21,共2页
Heilongjiang Science
关键词
钒
掺杂
二氧化钛
甲醛
催化降解
Vanadium
Doping
TiO 2
Formaldehyde
Catalytic degradation
