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Synthesis of stainless steel nanoballs via submerged glow-discharge plasma and its photocatalytic performance in methylene blue decomposition

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Title: Synthesis of stainless steel nanoballs via submerged glow-discharge plasma and its photocatalytic performance in methylene blue decomposition
Authors: bin Julaihi, Muhammad Rafiq Mirza Browse this author
Yatsu, Shigeo Browse this author →KAKEN DB
Jeem, Melbert Browse this author
Watanabe, Seiichi Browse this author →KAKEN DB
Keywords: stainless steel
photocatalytic
nanoballs
methylene blue
Issue Date: 14-Aug-2015
Publisher: Taylor & Francis
Journal Title: Journal of experimental nanoscience
Volume: 10
Issue: 12
Start Page: 965
End Page: 982
Publisher DOI: 10.1080/17458080.2014.951408
Abstract: Stainless steel nanoparticles or 'nanoballs' have been synthesised using submerged glow-discharge plasma. Transmission electron microscopy showed that the nanoballs are uniformly spherical and size distribution estimation showed that their diameters are below 200nm. The decomposition of methylene blue solution under ultraviolet light with the wavelength of 354nm was observed in the presence of stainless steel nanoballs. A mixture of stainless steel nanoballs and 0.1% methylene blue dye was irradiated with ultraviolet light. The concentration of methylene blue was reduced to baseline level in 72hours. This shows that the stainless steel nanoballs have photocatalytic ability. In stainless steel nanoballs, methylene blue showed two different decomposition pathways; showing fast and slow reactions. Also, methylene blue was oxidised into sulphoxide before reducing into lighter by-products. X-ray diffraction analysis has shown that the nanoballs consist of Fe2O3 and Cr2O3, which are photocatalytically active species.
Rights: This is an Accepted Manuscript of an article published by Taylor & Francis in Journal of Experimental Nanoscience on 2015-08-14, available online: http://www.tandfonline.com/doi/full/10.1080/17458080.2014.951408.
Type: article (author version)
URI: http://hdl.handle.net/2115/62684
Appears in Collections:エネルギー・マテリアル融合領域研究センター (Center for Advanced Research of Energy and Material) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

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