TiO2 nanotube/CdS hybrid electrodes: extraordinary enhancement in the inactivation of Escherichia coli

Steven C Hayden; Nageh K Allam; Mostafa A El-Sayed

doi:10.1021/ja107034z

TiO2 nanotube/CdS hybrid electrodes: extraordinary enhancement in the inactivation of Escherichia coli

J Am Chem Soc. 2010 Oct 20;132(41):14406-8. doi: 10.1021/ja107034z.

Authors

Steven C Hayden¹, Nageh K Allam, Mostafa A El-Sayed

Affiliation

¹ Laser Dynamics Laboratory, School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332-0400, USA.

PMID: 20863106
DOI: 10.1021/ja107034z

Abstract

Titanium dioxide nanotubes offer distinct advantages over films of the same material in the production of hydroxyl radicals and subsequent inactivation of Escherichia coli in wastewater. However, their visible light absorption capabilities are limited. Semiconducting nanocrystals of cadmium sulfide have been used to increase the sensitivity of TiO(2) nanotubes to visible light. A small applied potential, using CdS-coated TiO(2) nanotube arrays, allowed for total inactivation of E. coli in hitherto record short time.

Publication types

Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

Cadmium Compounds / chemistry*
Electrodes*
Escherichia coli / drug effects*
Metal Nanoparticles*
Microscopy, Electron, Scanning
Sulfides / chemistry*
Titanium / chemistry*
Titanium / pharmacology

Substances

Cadmium Compounds
Sulfides
cadmium sulfide
titanium dioxide
Titanium