摘要
采用简单的一步室温水解法,制备了氯氧化铋(BiOCl)纳米片,除水外无任何特殊溶剂。采用X射线衍射仪(XRD)和扫描电子显微镜(SEM)表征了样品的晶相结构和微观形貌。光催化研究结果表明,在模拟日光的照射下,BiOCl对环丙沙星(CIP)具有突出的光催化降解活性。光照7min后,BiOCl对CIP的光降解率达到91%,降解速率常数为0.37min^(-1);P25对CIP的光降解率只有76%,降解速率常数为0.19min^(-1)。自由基捕获实验结果表明,空穴和超氧自由基是BiOCl光催化降解CIP过程中最主要的活性种。
A simple one-step room temperature hydrolysis method was used to prepare bismuth chloride oxide(BiOCl)nanosheets,without any special solvent except for water.The crystalline structure and microscopic morphology of the samples were characterized by X-ray diffractometer(XRD)and scanning electron microscope(SEM).Photocatalytic studied showed that the prepared BiOCl exhibited outstanding photocatalytic degradation activity over ciprofloxacin(CIP)under simulated sunlight irradiation.The photocatalytic degradation of CIP by BiOCl reached 91%with a degradation rate constant of 0.37/min after 7min of irradiation,while the photodegradation of CIP by P25 was only 76%with a degradation rate constant of 0.19/min.The radical trapping experiments showed that holes and superoxide radicals were the most important active species in the photocatalytic degradation of CIP by BiOCl.
作者
苗志强
王立艳
MIAO ZhiQiang;WANG Liyan(Key Laboratory of Building Energy-Saving Technology Engineering of Jilin Provincial,School of Materials Science and Engineering,Jilin Jianzhu University,Changchun 130118,China)
出处
《化工技术与开发》
CAS
2023年第4期71-74,共4页
Technology & Development of Chemical Industry
关键词
BiOCl
光催化
环丙沙星
室温
bismuth chloride oxide
photocatalysis
ciprofloxacin
room temperature
