Photodecomposition and Surface Adsorption of Methylene Blue on TiO2 Nanofluid Prepared by ASNSS

Ho Chang; Chaochin Su; Chih-Hung Lo; Liang-Chia Chen; Tsing-Tshih Tsung; Ching-Song Jwo

doi:10.2320/matertrans.45.3334

Photodecomposition and Surface Adsorption of Methylene Blue on TiO₂ Nanofluid Prepared by ASNSS

Ho Chang, Chaochin Su, Chih-Hung Lo, Liang-Chia Chen, Tsing-Tshih Tsung, Ching-Song Jwo

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Keywords: arc-submerged nanoparticle synthesis system (ASNSS), nanofluid, photocatalytic properties, surface adsorption

JOURNAL FREE ACCESS

2004 Volume 45 Issue 12 Pages 3334-3337

DOI https://doi.org/10.2320/matertrans.45.3334

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Abstract

This study proposes a low-pressure control method for an arc-submerged nanoparticle synthesis system (ASNSS) developed for TiO₂ nanoparticle fabrication. The photocatalytic and surface adsorptive activity of TiO₂ nanofluid is examined via the decomposition of methylene blue. Experimental results show that the ASNSS can successfully prepare anatase TiO₂. The rate constant of photocatalytic reaction of TiO₂ nanoparticles for methylene blue is 0.0365 (min⁻¹), and the rate constant of surface adsorption of methylene blue on TiO₂ is 0.0437 (min⁻¹). Experimental results indicate that the TiO₂ nanofluid prepared by the ASNSS has excellent photocatalytic activity and surface adsorption property for degradation of methylene blue.

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