Bi2WO6-N-TiO2纳米管电极的制备及性能分析
Preparation and performance analysis of Bi2WO6-N-TiO2 nanotube electrodes
张甜 1王理明 1刘成国 2刘婷婷 1魏超 2李伟 2陈洋洋2
作者信息
- 1. 西安工程大学环境与化学工程学院,西安 710048
- 2. 中化学城市投资有限公司,西安 710054
- 折叠
摘要
采用水热法与低温等离子体法制备了Bi2WO6-N-TiO2纳米管电极,对其进行SEM、EDS、XRD、UV-VIS-DRS、CV和I-t等手段表征,并应用于环丙沙星抗生素废水的降解.结果表明,Bi2WO6纳米片成功的负载到TiO2纳米管电极表面,Bi2WO6和N的共同改性显著增强了 TiO2对可见光的吸收.电化学分析结果表明经过改性后的TiO2纳米管电极具有优异的光电转换性能,光电流密度约是改性前的5～9倍.Bi2WO6-N-TiO2纳米管电极对环丙沙星污染物的降解过程遵循一级动力学反应方程,其中0.8 mmol Bi2WO6-N-TiO2纳米管电极的降解速率最高,可以达到0.00683 min-1.
Abstract
Bi2WO6-N-TiO2 nanotube electrodes were prepared by hydrothermal method and low temperature plasma method,which were characterized by SEM,EDS,XRD,UV-Vis-DRS,CV and I-t,and applied to the degradation of ciprofloxacin antibiotic wastewater.The results showed that Bi2WO6 nanosheets were successful-ly loaded onto the surface of TiO2 nanotube electrode,and the co-modification of Bi2WO6 and N significantly en-hanced the absorption of visible light by TiO2.Electrochemical analysis results showed that the modified TiO2 nanotube electrode had excellent photoelectric conversion performance,and the photocurrent density was about 5-9 times that of the modified TiO2 nanotube electrode.The degradation of ciprofloxacin by Bi2WO6-N-TiO2 nanotube electrode followed the first-order kinetic reaction equation,in which 0.8 mmol Bi2WO6-N-TiO2 nano-tube electrode had the highest degradation rate,reaching 0.00683 min-1.
关键词
Bi2WO6-N-TiO2纳米管电极/光电催化/环丙沙星Key words
Bi2WO6-N-TiO2 nanotube electrode/photoelectrocatalysis/ciprofloxacin引用本文复制引用
基金项目
陕西省科技厅重点研发项目(2023-YBSF-475)
陕西省高等学校科协青年人才托举计划(20210424)
西安市碑林区科技计划(GX2208)
陕西省重点产业创新链(群)项目(2022ZDLSF06-05)
出版年
2024
NETL
NSTL
万方数据