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Enhancement of photocatalytic degradation of methyl orange by supported zinc oxide nanorods/zinc stannate (ZnO/ZTO) on porous substrates
Center of Excellence in Nanotechnology, Asian Institute of Technology,Thailand.ORCID iD: 0000-0002-0074-3504
2013 (English)In: Industrial and Engineering Chemistry Research, ISSN 0888-5885, Vol. 52, no 38, 13629-13636 p.Article in journal (Refereed) Published
Abstract [en]

Dye wastewater from textile industries is reported to be a major river pollutant. Zinc stannate (ZTO) was grown directly on zinc oxide (ZnO) nanorod-coated polyester fiber membranes and porous ceramic substrates by a mild hydrothermal method, where the nanorods supplied zinc ions for ZTO growth. Photocatalytic degradation of a methyl orange aqueous solution under UV-light irradiation was monitored for up to 3 h duration. The higher photocatalytic activity of ZnO/ZTO catalysts on ceramic substrates was attributed to the large surface area of the nanocomposites. 50% methyl orange and similar to 95% methyl orange could be degraded within 1 and 3 h of UV-light irradiation, respectively, by using the porous-ceramic-supported catalysts (C-ZnO/10ZTO), because of efficient charge separation. Moreover, the formation of ZTO islands on ZnO nanorods led to an enhancement in the photocatalytic activity in the exposed areas of electron-rich ZnO nanorods.

Place, publisher, year, edition, pages
American Chemical Society (ACS), 2013. Vol. 52, no 38, 13629-13636 p.
National Category
Nano Technology
URN: urn:nbn:se:kth:diva-175194DOI: 10.1021/ie4019726ISI: 000330098700014ScopusID: 2-s2.0-84884958525OAI: diva2:914342

QC 20160401

Available from: 2016-03-23 Created: 2015-10-10 Last updated: 2016-04-01Bibliographically approved

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Dutta, Joydeep
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