摘要
采用水热法在160℃条件下以活性炭(AC)为载体合成了光催化剂Bi2WO6/AC,用X射线衍射仪(XRD)、电子扫描电镜(SEM)对催化剂进行了表征.同时,以邻硝基苯酚为目标污染物,在可见光照射下,讨论了催化剂用量、溶液的pH、污染物初始浓度等因素对催化剂光催化活性的影响.结果表明,当[Bi2WO6/AC]=5g·L-1、pH=5、[邻硝基苯酚]0=100mg·L-1时,催化剂可见光降解活性最好,60min后邻硝基苯酚的降解率可达到99.81%.
A Bi2WO6/AC visible-light photocatalyst was synthesized at 160℃ via a hydrothermal method. The phase and morphologies of prepared catalyst were characterized by X-ray diffraction （XRD） and scanning electron microscopy （SEM）. The photocatalytic activity of Bi2WO6/AC was investigated using o-nitrophenol as a model compound under visible light irradiation. The factors that influence the photocatalytic activity of Bi2 WO6/AC include the amount of catalyst, initial pH value and initial o-nitrophenol concentration. The results indicate that the maximum photocatalytic activity is obtained at pH 5.0 by adding 5 g·L^-1 Bi2WO6/AC into 100 mg·L^-1 o-nitrophenol solution. After 60 min illumination, 99.81% removal efficiency was found for o-nitrophenol.
出处
《环境科学学报》
CAS
CSCD
北大核心
2009年第8期1720-1725,共6页
Acta Scientiae Circumstantiae
基金
河南省重点科技攻关项目(No.0523032200)
河南省自然科学基金(No. 0611020900)~~
