摘要
以V2O5、NaOH和AgNO3为原料,采用水热法制备了可见光催化剂Ag3VO4.考察了水热温度对该催化剂可见光吸收以及可见光催化性能的影响.以有机染料甲基橙（MO）和罗丹明B（RhB）为指标反应,测试了Ag3VO4的可见光催化活性.结果表明,不同水热温度下的催化剂均在可见光区有明显的吸收,吸收带边约为590-650nm;在160℃水热反应4h制得的Ag3VO4光催化活性最高,当Ag3VO4用量为0.1g时,对于10mg/L甲基橙溶液3h的脱色率可达到94%,对10mg/L罗丹明B 1h的脱色率则可达到98%.
Ag3 VO4 ,a visible‐light‐driven photocatalyst ,was prepared by hydrothermal method with V2 O5 、NaOH and AgNO3 acted as materials .The effect of hydrothermal temperature on the visible light absorption and photocatalytic activity of Ag3 VO4 were systematically investiga‐ted .The visible light photocatalytic activity of Ag3 VO4 was evaluated by using organic dye methyl orange （MO） and rhodamine B （RhB） as evaluation system ,respectively .The results indicated that the obtained Ag3 VO4 photocatalyst at different hydrothermal temperature showed obvious absorbance in the visible light region and the absorption band edge centered at ca 590-650 nm .Moreover ,Ag3 VO4 obtained at 160 ℃ for 4 h exhibited the highest visible‐light‐driven activity .As Ag3 VO4 dosage being 0 .1 g ,the degradation yield of methyl orange with the concentration of 10 mg/L reached 94% after 3 h and while that of rhodamine B with the same concentration reached 98% after 1 h .
出处
《化学研究》
CAS
2015年第5期519-523,共5页
Chemical Research
基金
国家自然科学基金(21471047
20973054)
关键词
Ag3VO4
水热法
可见光催化
甲基橙
罗丹明B
Ag3 VO4
hydrothermal method
visible-light-driven photocatalysis
methyl orange
rhodamine B
作者简介
王擎龙（1989-），男，硕士生，研究方向为光催化．
通讯联系人，E-mail：yangjianjun@henu．edu．cn．
