Bi_(2)WO_(6)-N-TiO_(2)纳米管电极的制备及性能分析  

Preparation and performance analysis of Bi_(2)WO_(6)-N-TiO_(2)nanotube electrodes

作　　者：张甜 王理明[1] 刘成国 刘婷婷 魏超 李伟 陈洋洋 ZHANG Tian;WANG Liming;LIU Chengguo;LIU Tingting;WEI Chao;LI Wei;CHEN Yangyang(School of Environmental and Chemical Engineering,Xi'an Polytechnic University,Xi'an 710048,China;China National Chemical Urban Investment Co.,Ltd.,Xi'an 710054,China)

机构地区：[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

出　　处：《功能材料》2024年第5期5210-5214,5231,共6页Journal of Functional Materials

基　　金：陕西省科技厅重点研发计划项目(2023-YBSF-475);陕西省高校科协青年人才托举计划项目(20210424);西安市碑林区科技计划项目(GX2208);陕西省重点产业创新链(群)项目(2022ZDLSF06-05)。

摘　　要：采用水热法与低温等离子体法制备了Bi_(2)WO_(6)-N-TiO_(2)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,Bi_(2)WO_(6)纳米片成功的负载到TiO_(2)纳米管电极表面,Bi_(2)WO_(6)和N的共同改性显著增强了TiO_(2)对可见光的吸收。电化学分析结果表明经过改性后的TiO_(2)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。Bi_(2)WO_(6)-N-TiO_(2)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 Bi_(2)WO_(6)-N-TiO_(2)纳米管电极的降解速率最高,可以达到0.00683 min^(-1)。Bi_(2)WO_(6)-N-TiO_(2)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 Bi_(2)WO_(6)nanosheets were successfully loaded onto the surface of TiO_(2)nanotube electrode,and the co-modification of Bi_(2)WO_(6)and N significantly enhanced the absorption of visible light by TiO_(2).Electrochemical analysis results showed that the modified TiO_(2)nanotube electrode had excellent photoelectric conversion performance,and the photocurrent density was about 5-9 times that of the modified TiO_(2)nanotube electrode.The degradation of ciprofloxacin by Bi_(2)WO_(6)-N-TiO_(2)nanotube electrode followed the first-order kinetic reaction equation,in which 0.8 mmol Bi_(2)WO_(6)-N-TiO_(2)nanotube electrode had the highest degradation rate,reaching 0.00683 min^(-1).

关 键 词：Bi_(2)WO_(6)-N-TiO_(2)纳米管电极 光电催化 环丙沙星 

分 类 号：X703.1[环境科学与工程—环境工程]