Next Article in Journal
The Plant Decapeptide OSIP108 Can Alleviate Mitochondrial Dysfunction Induced by Cisplatin in Human Cells
Next Article in Special Issue
Surface Properties and Photocatalytic Activity of KTaO3, CdS, MoS2 Semiconductors and Their Binary and Ternary Semiconductor Composites
Previous Article in Journal
New Uses for Old Drugs: The Tale of Artemisinin Derivatives in the Elimination of Schistosomiasis Japonica in China
Article Menu

Export Article

Open AccessReview
Molecules 2014, 19(9), 15075-15087; doi:10.3390/molecules190915075

Are TiO2 Nanotubes Worth Using in Photocatalytic Purification of Air and Water?

"Photocatalyse et Environnement", CNRS/Ecole Centrale de Lyon (STMS), 69134 Ecully CEDEX, France
Received: 24 July 2014 / Revised: 29 August 2014 / Accepted: 9 September 2014 / Published: 19 September 2014
(This article belongs to the Special Issue Photocatalysis)
View Full-Text   |   Download PDF [2242 KB, uploaded 19 September 2014]   |  


Titanium dioxide nanotubes (TNT) have mainly been used in dye sensitized solar cells, essentially because of a higher transport rate of electrons from the adsorbed photo-excited dye to the Ti electrode onto which TNT instead of TiO2 nanoparticles (TNP) are attached. The dimension ranges and the two main synthesis methods of TNT are briefly indicated here. Not surprisingly, the particular and regular texture of TNT was also expected to improve the photocatalytic efficacy for pollutant removal in air and water with respect to TNP. In this short review, the validity of this expectation is checked using the regrettably small number of literature comparisons between TNT and commercialized TNP referring to films of similar thickness and layers or slurries containing an equal TiO2 mass. Although the irradiated geometrical area differed for each study, it was identical for each comparison considered here. For the removal of toluene (methylbenzene) or acetaldehyde (ethanal) in air, the average ratio of the efficacy of TNT over that of TiO2 P25 was about 1.5, and for the removal of dyes in water, it was around 1. This lack of major improvement with TNT compared to TNP could partially be due to TNT texture disorders as seems to be suggested by the better average performance of anodic oxidation-prepared TNT. It could also come from the fact that the properties influencing the efficacy are more numerous, their interrelations more complex and their effects more important for pollutant removal than for dye sensitized solar cells and photoelectrocatalysis where the electron transport rate is the crucial parameter. View Full-Text
Keywords: photocatalysis; purification of air and water; titanium dioxide nanotubes; TiO2 photocatalysis; purification of air and water; titanium dioxide nanotubes; TiO2

This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Pichat, P. Are TiO2 Nanotubes Worth Using in Photocatalytic Purification of Air and Water? Molecules 2014, 19, 15075-15087.

Show more citation formats Show less citations formats

Related Articles

Article Metrics

Article Access Statistics



[Return to top]
Molecules EISSN 1420-3049 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top