Preparation and characterization of nano-TiO2 doped with iron and niobium using sol-gel method

Authors

Nhat Mihn Doan, De La Salle University, Manila
Carl Renan Estrellan, De La Salle University, Manila
Anton Purnomo, De La Salle University, Manila
Susan M. Gallardo, De La Salle University, Manila
Chris Salim, Tokyo Institute of Technology
Hirofumi Hinode, Tokyo Institute of Technology

College

Gokongwei College of Engineering

Department/Unit

Chemical Engineering

Document Type

Archival Material/Manuscript

Publication Date

10-2011

Abstract

The nanoTiO₂ photocatalyst doped with iron (Fe) and niobium (Nb) for dye wastewater treatment was prepared by temperature-controlled sol-gel method. 0.1% Fe:Nb co-doped TiO_2, 0.1% Fe doped TiO_2, 0.1% Nb doped TiO_2, bare TiO₂ were compared to that of the commercially available Degussa TiO₂ P25. Among these characteristics are crystal size, the presence of absolute anatase crystal phase, UV-VIS absorption and specific surface area. The characterization data were correlated to photocatalytic activities using turquoise blue dye (TBD) as model pollutant. With initial concentration of 30 ppm TBD, catalyst loading of 0.5 g/l, initial pH ~ 5.2, single doping (with Nb) and co-doping (Fe and Nb) catalyst have reached complete decolorization within 2.5 hours and 3 hours. And the kinetic reaction rate constant of apparent first-order model is 0.0258 min^-1 and 0.0225 min^-1, respectively.

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Recommended Citation

Doan, N. M., Estrellan, C., Purnomo, A., Gallardo, S. M., Salim, C., & Hinode, H. (2011). Preparation and characterization of nano-TiO2 doped with iron and niobium using sol-gel method. Retrieved from https://animorepository.dlsu.edu.ph/faculty_research/5095

Disciplines

Chemical Engineering

Note

Presented at the 18th Regional Symposium on Chemical Engineering, October 27-28, 2011, Ho Chi Minh City, Vietnam

Keywords

Photocatalysis; Titanium dioxide; Iron; Niobium; Water—Purification—Photocatalysis

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