TiO₂ Supported Clinoptilotile: Characterization and Optimization of Operational Parameters for Methyl Orange Removal

Abstract:

Titania dispersed on dealuminated Clinoptilotile (TiO₂/HCP) was synthesized and characterized by Scanning Electron Microscope (SEM). Supporting characterization techniques reveals partly dispersion of TiO₂ within the cavities of dealuminated Clinoptilotile (HCP) and TiO₂ exist as nanoparticles or clusters on the HCP surface ascribed to lower loading of TiO₂. The photocatalytic degradation of methyl orange solution was conducted under UV-irradiation in the presence of TiO₂/HCP. The photocatalytic degradation of methyl orange in the presence of the photocatalyst was optimized at lower loading of TiO₂, at a lower initial dye concentration (30 ppm), calcination temperature of 873K and nitrate ion accelerates degradation activities of methyl orange. Kinetic studies depict the photocatalytic degradation of methyl orange follows the pseudo-first order reaction.

• Periodical: Advanced Materials Research (Volumes 781-784)
• Pages: 2249-2252
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.781-784.2249
• Online since: September 2013
• Authors: Sanni O. Saheed, Sekomeng J. Modise, Allworth M. Sipamla
• Keywords: Methyl Orange, Optimization, Photocatalytic Degradation, TiO₂/HCP, Uv Irradiation

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