SnS_(2)/TiO_(2)纳米管阵列光电催化降解诺氟沙星  

Photoelectrocatalytic degradation of norfloxacin by SnS_(2)/TiO_(2)nanotube array

作　　者：张明美 李新勇[2] 金鑫[1,3] ZHANG Mingmei;LI Xinyong;JIN Xin;无(Sinopec Dalian Research Institute of Petroleum and Petrochemicals,Dalian 116045,China;School of Environmental Science and Technology,Dalian University of Technology,Dalian 116024,China;National Local Joint Engineering Research Center of Petrochemical Environmental Pollution Prevention and Control Technology,Dalian 116045,China)

机构地区：[1]中国石化大连石油化工研究院,辽宁大连116045 [2]大连理工大学环境学院,辽宁大连116024 [3]石油化工环境污染防治技术国家地方联合工程研究中心,辽宁大连116045

出　　处：《化工环保》2023年第3期365-370,共6页Environmental Protection of Chemical Industry

基　　金：中国石油化工股份有限公司资助项目(320079)。

摘　　要：通过电沉积法将SnS_(2)纳米颗粒沉积在阳极氧化的TiO_(2)纳米管上,制备了SnS_(2)/TiO_(2)纳米管阵列(NTs)电极。对SnS_(2)/TiO_(2)NTs电极的微观形貌和结构进行了表征,研究了电极的光电化学性质。表征结果显示,SnS_(2)/TiO_(2)NTs电极的光吸收带边发生明显红移,光电流密度可达1.49 mA/cm^(2),短时间光电流密度为0.38 mA/cm^(2)。实验结果表明,SnS_(2)的负载降低了电极中光生电子-空穴的复合率,提高了光电催化对诺氟沙星(NOR)的降解效率,反应180 min后SnS_(2)/TiO_(2)NTs电极对NOR的降解率高达92%。·O_(2)-、·OH及SnS_(2)价带上的空穴是参与光电催化降解NOR的活性氧物种。SnS_(2)nanoparticles were deposited on anodized TiO_(2)nanotubes by electrodeposition method to prepare SnS_(2)/TiO_(2)nanotube array(NTs)electrode.The microstructure and morphology of SnS_(2)/TiO_(2)NTs electrode were characterized and the photoelectrochemical properties of the electrodes were also studied.The characterization results show that the edge of the light absorption band of the electrode is obviously red-shifted,the photocurrent density can reach 1.49 mA/cm^(2),and the short-time photocurrent density is 0.38 mA/cm^(2).The experimental results show that the loading of SnS_(2)reduces the recombination rate of photogenerated electron-hole in the electrode and improves the photocatalytic degradation efficiency of norfloxacin(NOR),and the degradation rate of NOR is up to 92%after 180 min of reaction.·O_(2)^(−),·OH and the holes in valence bands of SnS_(2)are active oxygen species involved in photoelectrocatalytic degradation of NOR.

关 键 词：SnS_(2)/TiO_(2)纳米管阵列电极 光生电子-空穴 光电催化 诺氟沙星 

分 类 号：X703[环境科学与工程—环境工程]