ZnSe/CdS共敏化TiO₂纳米管阵列对大肠杆菌的光电催化灭活作用

Photoelectrocatalytic Inactivation of E. coli by ZnSe/CdS Co-sensitized TiO2 Nanotube Array.

作者信息

Zou Jianmei, Nguyen VanManh, Yin Xuehua, Wu Zeming, Cai Qingyun

机构信息

State Key Lab of Chemo/Biosensing & Chemometrics, College of Chemistry & Chemical Engineering, Hunan University.

出版信息

Anal Sci. 2016;32(6):607-10. doi: 10.2116/analsci.32.607.

DOI:10.2116/analsci.32.607

PMID:27302579

Abstract

A step-wise structural ZnSe/CdS co-sensitized TiO2 nanotube (NT) electrode was prepared by pulse-electrodeposition and successive ionic layer adsorption and reaction (SILAR), with an aim towards enhancing the absorption efficiency of TiO2 NTs in visible light region and enhancing the photo-electrical transform efficiency. The as-prepared CdS/ZnSe/TiO2 NTs were applied to the photoelectrocatalytic inactivation of E. coli. A complete inactivation of 3.0 × 10(8) cfu mL(-1) E. coli was observed after 60 min of photoelectrocatalysis process under the illumination of visble light.

摘要

通过脉冲电沉积和连续离子层吸附与反应（SILAR）制备了一种逐步结构的ZnSe/CdS共敏化TiO₂纳米管（NT）电极，旨在提高TiO₂纳米管在可见光区域的吸收效率并提高光电转换效率。将制备好的CdS/ZnSe/TiO₂纳米管应用于大肠杆菌的光电催化失活。在可见光照射下进行60分钟的光电催化过程后，观察到3.0×10⁸ cfu mL⁻¹的大肠杆菌完全失活。