Enhancement of photocatalytic degradation of methyl orange by supported zinc oxide nanorods/zinc stannate (ZnO/ZTO) on porous substrates
2013 (English)In: Industrial and Engineering Chemistry Research, ISSN 0888-5885, Vol. 52, no 38, 13629-13636 p.Article in journal (Refereed) Published
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.
IdentifiersURN: urn:nbn:se:kth:diva-175194DOI: 10.1021/ie4019726ISI: 000330098700014ScopusID: 2-s2.0-84884958525OAI: oai:DiVA.org:kth-175194DiVA: diva2:914342
QC 201604012016-03-232015-10-102016-04-01Bibliographically approved