碳量子点修饰的BiOCl/MIL-101的光催化性能研究
Improved Photocatalytic Performance Over BiOCl/MIL-101 Modified with Carbon Quantum Dots
朵芳芳 1张明亮 1冯晓婷 2党坦1
作者信息
- 1. 新乡学院 化学与材料工程学院,河南 新乡 453003
- 2. 吕梁学院 化学化工系,山西 吕梁 033001
- 折叠
摘要
采用常温水解法制备出碳量子点(CQDs)修饰的BiOCl/MIL-101(CBM)光催化剂,并探究其光催化降解抗生素性能.通过X射线衍射仪、扫描电子显微镜、氮气吸附-脱附仪和固体荧光仪等对所制备样品的结构、形貌、比表面积和电子-空穴分离情况等进行表征分析.结果表明:CQDs/BiOCl(CB)和MIL-101复合后制备的CBM光催化剂结晶性良好,形貌规整,大小均匀,具有较大的比表面积和较低的光生电子-空穴复合率,从而表现出更高的光催化性能.通过对盐酸环丙沙星的降解实验,发现其在可见光照射 180 min后降解率提高了一倍.因此,铋基金属有机框架材料(Bi-MOF)在光催化领域有很大的应用空间.
Abstract
BiOCl/MIL-101(CBM)photocatalyst modified with carbon quantum dots(CQDs)was prepared by simple hydrolysis at room temperature,and its photocatalytic degradation of antibiotics was investigated.The structure,morphology,specific surface area and electron-hole separation of the samples were characterized by X-ray diffractometer,scanning electron microscope,nitrogen adsorption-desorption and solid state fluorometer characteraction.The results show that the CBM photocatalyst prepared by the combination of CQDs/BiOCl(CB)and MIL-101 has good crystallization,uniform morphology,large specific surface area and low photoelectron-hole recombination rate,which shows the improvement of photocatalytic performance.Through the degradation experiment of ciprofloxacin hydrochloride,it was found that the degradation rate was doubled after 180 min under visible light irradiation.Therefore,bismuth organic framework materials(Bi-MOF)are expected to open up a new system of photocatalytic materials.
关键词
CQDs/BiOCI/MIL-101(CBM)/可见光/光催化降解/盐酸环丙沙星Key words
CQDs/BiOCI/MIL-101(CBM)/visible light/photocatalytic degradation/ciprofloxacin hydrochloride引用本文复制引用
基金项目
河南省高等学校重点科研项目(22B150014)
河南省高等学校重点科研项目(22B480004)
出版年
2024
NETL
NSTL
万方数据