Titania nanowires as substrates for sensing and photocatalysis of common textile industry effluents

Mandal, Soumit S. ; Bhattacharyya, Aninda J. (2010) Titania nanowires as substrates for sensing and photocatalysis of common textile industry effluents Talanta, 82 (3). pp. 876-884. ISSN 0039-9140

Full text not available from this repository.

Official URL: http://www.sciencedirect.com/science/article/pii/S...

Related URL: http://dx.doi.org/10.1016/j.talanta.2010.04.021

Abstract

Sensing and photocatalysis of textile industry effluents such as dyes using mesoporous anatase titania nanowires are discussed here. Spectroscopic investigations show that the titania nanowires preferentially sense cationic (e.g. Methylene Blue, Rhodamine B) over anionic (e.g. Orange G, Remazol Brilliant Blue R) dyes. The adsorbed dye concentration on titania nanowires increased with increase in nanowire dimensions and dye solution pH. Electrochemical sensing directly corroborated spectroscopic findings. Electrochemical detection sensitivity for Methylene Blue increased by more than two times in magnitude with tripling of nanowire average length. Photodegradation of Methylene Blue using titania nanowires is also more efficient than the commercial P25-TiO2 nanopowders. Keeping illumination protocol and observation times constant, the Methylene Blue concentration in solution decreased by only 50% in case of P25-TiO2 nanoparticles compared to a 100% decrease for titania nanowires. Photodegradation was also found to be function of exposure times and dye solution pH. Excellent sensing ability and photocatalytic activity of the titania nanowires is attributed to increased effective reaction area of the controlled nanostructured morphology.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
Keywords:Titana Nanowires; Water Pollution; Textile Dyes; Electrochemical Sensing; Photocatalysis
ID Code:108811
Deposited On:22 Dec 2017 10:11
Last Modified:22 Dec 2017 10:11

Repository Staff Only: item control page