Removal of dyes from water using a TiO2 photocatalyst supported on black sand

Mingliang Luo; Derek Bowden; Peter Brimblecombe

doi:10.1007/s11270-008-9841-6

Author(s)

Mingliang Luo
Derek Bowden
Peter Brimblecombe

Detail(s)

Original language	English
Pages (from-to)	233-241
Journal / Publication	Water, Air, and Soil Pollution
Volume	198
Issue number	1-4
Publication status	Published - Mar 2009
Externally published	Yes

Link(s)

DOI	DOI https://doi.org/10.1007/s11270-008-9841-6 Final Published version
	Check@CityULib
Link to Scopus	https://www.scopus.com/record/display.uri?eid=2-s2.0-60349087794&origin=recordpage
Permanent Link	https://scholars.cityu.edu.hk/en/publications/publication(927408b1-d024-450f-8101-89e5f8d41cc9).html

Abstract

A TiO₂ photocatalyst was prepared by depositing silica and titanium dioxide on the surface of black sand that made the photocatalyst recoverable using a magnetic field. The magnetic photocatalyst was used to remove six aqueous dyes from water and the removal was attributed to both adsorption and photocatalytic oxidation. Removal by adsorption was more noticeable with the cationic dyes than with the anionic dyes. The difference was related to the electrostatic interaction between the charged dye molecular and the silica-occupied surface of the photocatalyst. Removal by photocatalytic oxidation occurred with anionic dyes, while it was not appreciable with cationic dyes. It was postulated that photocatalytic oxidation might have happened with cationic dyes as well, but the strong adsorption made the photocatalytic oxidation undetectable. © 2008 Springer Science+Business Media B.V.

Research Area(s)

Black sand, Dye, Environmental remediation, Photocatalyst, Titanium dioxide

Citation Format(s)

[ RIS ] [ BibTeX ]

Removal of dyes from water using a TiO₂ photocatalyst supported on black sand. / Luo, Mingliang; Bowden, Derek; Brimblecombe, Peter.
In: Water, Air, and Soil Pollution, Vol. 198, No. 1-4, 03.2009, p. 233-241.

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

Luo, M, Bowden, D & Brimblecombe, P 2009, 'Removal of dyes from water using a TiO₂ photocatalyst supported on black sand', Water, Air, and Soil Pollution, vol. 198, no. 1-4, pp. 233-241. https://doi.org/10.1007/s11270-008-9841-6

Luo, M., Bowden, D., & Brimblecombe, P. (2009). Removal of dyes from water using a TiO₂ photocatalyst supported on black sand. Water, Air, and Soil Pollution, 198(1-4), 233-241. https://doi.org/10.1007/s11270-008-9841-6

Luo M, Bowden D, Brimblecombe P. Removal of dyes from water using a TiO₂ photocatalyst supported on black sand. Water, Air, and Soil Pollution. 2009 Mar;198(1-4):233-241. doi: 10.1007/s11270-008-9841-6

Luo, Mingliang ; Bowden, Derek ; Brimblecombe, Peter. / Removal of dyes from water using a TiO₂ photocatalyst supported on black sand. In: Water, Air, and Soil Pollution. 2009 ; Vol. 198, No. 1-4. pp. 233-241.