Photocatalytic effect of nano-TiO2 loaded cement on dye decolorization and Escherichia coli inactivation under UV irradiation

Photocatalytic effect of nano-TiO2 loaded cement on dye decolorization and Escherichia coli... In the present study, titanium dioxide (TiO2) nano-particles were synthesized by sol–gel technique and then used to provide nano-TiO2 loaded cement samples at 1, 5, and 10 wt% for investigation of Malachite green pigment decomposition and Escherichia coli inactivation under UV irradiation. Surveys conducted on the synthesized TiO2 nano-particles showed a 100 % anatase phase with a mean particle size of 66.5 nm, surface area of 64.352 m2 g−1, and a porosity volume of 0.1278 cm3 g−1. Cement samples containing this catalyst exhibited stronger photocatalytic properties as compared to the same amount of pure catalyst. Considering both photocatalytic performance and cost of catalyst, 5 wt% titanium dioxide was suggested to be added to cement. By addition of 1 wt% polycarboxylic copolymer as super-plasticizer to the cement paste, the photocatalytic sample activities were reinforced so that a similar performance could be obtained at 1 wt% catalyst as compared to 5 wt% catalyst without super-plasticizer. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Research on Chemical Intermediates Springer Journals

Photocatalytic effect of nano-TiO2 loaded cement on dye decolorization and Escherichia coli inactivation under UV irradiation

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Publisher
Springer Netherlands
Copyright
Copyright © 2015 by Springer Science+Business Media Dordrecht
Subject
Chemistry; Catalysis; Physical Chemistry; Inorganic Chemistry
ISSN
0922-6168
eISSN
1568-5675
D.O.I.
10.1007/s11164-015-2374-x
Publisher site
See Article on Publisher Site

Abstract

In the present study, titanium dioxide (TiO2) nano-particles were synthesized by sol–gel technique and then used to provide nano-TiO2 loaded cement samples at 1, 5, and 10 wt% for investigation of Malachite green pigment decomposition and Escherichia coli inactivation under UV irradiation. Surveys conducted on the synthesized TiO2 nano-particles showed a 100 % anatase phase with a mean particle size of 66.5 nm, surface area of 64.352 m2 g−1, and a porosity volume of 0.1278 cm3 g−1. Cement samples containing this catalyst exhibited stronger photocatalytic properties as compared to the same amount of pure catalyst. Considering both photocatalytic performance and cost of catalyst, 5 wt% titanium dioxide was suggested to be added to cement. By addition of 1 wt% polycarboxylic copolymer as super-plasticizer to the cement paste, the photocatalytic sample activities were reinforced so that a similar performance could be obtained at 1 wt% catalyst as compared to 5 wt% catalyst without super-plasticizer.

Journal

Research on Chemical IntermediatesSpringer Journals

Published: Nov 27, 2015

References

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