磷酸银光催化降解甲磺酸吉米沙星的研究Study on Photocatalytic Degradation of Gemifioxacin Mesylate Using Ag3PO4 Under Visible Light
王如意,徐会佳,茹世杰,高竹青
摘要(Abstract):
以AgNO_3和Na3PO4为原料,采用微波水热合成法制备具有可见光响应的高活性光催化剂Ag3PO4.。采用X射线粉末衍射、紫外-可见漫反射光谱等手段对其进行表征。以甲磺酸吉米沙星模拟自然水体中残留的抗生素污染物对光催化剂的性能进行了测定,主要通过光降解动力学分析考查了溶液初始pH值、甲磺酸吉米沙星初始浓度、催化剂用量对光催化降解甲磺酸吉米沙星效果的影响。结果表明:Ag3PO4光催化剂对甲磺酸吉米沙星的光降解符合一级动力学模型,当反应溶液pH为3.47、催化剂用量为50 mg、500 W的可见光照115 min时,对初始浓度为20 mg/L甲磺酸吉米沙星降解率达到92.7%.
关键词(KeyWords): 磷酸银;可见光催化剂;光降解;甲磺酸吉米沙星;光解动力学
基金项目(Foundation): 山西省高等学校大学生创新创业训练项目(S2015278)
作者(Author): 王如意,徐会佳,茹世杰,高竹青
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