Abstract
Nanocrystalline Titania Coated Metakaolin and Rice Hull Ash Based Geopolymer Spheres for Photocatalytic Degradation of Dye in Wastewater
Patricia Isabel Bravo1, Eiza Shimizu1, Roy Alvin Malenab2,April Anne Tigue2, Kimmie Mae Dela Cerna2, Jose Isagani Janairo3,4, Michael Angelo Promentilla2,4 and Derrick Ethelbhert Yu*1,4
DOI : http://dx.doi.org/10.13005/ojc/350118
Abstract:
Geopolymer spheres made from metakaolin and rice hull ash have exceptional chemical and mechanical stability, making them promising catalyst support matrix for photoactive compounds. In this paper, titania was deposited on geopolymer sphere via horizontal vapor phase growth method, which produced nanotitania crystals embedded on the surface. The titania-coated geopolymer spheres resulted in 90% dye photodegradation activity that can be used repeatedly, thus qualifying the products as sustainable materials for wastewater treatment.
Keywords:Degradation; Geopolymer; Nanotitania Photocatalyst; Photocatalytic Nanotitania Deposition
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