Spherical Tin Oxide, SnO2 Particles Fabricated via Facile Hydrothermal Method for Detection of Mercury (II) Ions.

Smooth-surface spherical tin oxide particles were fabricated via hydrothermal processing route. X-ray diffraction (XRD) revealed that the particles consisted of the rutile phase of SnO2 with tetragonal structure. The spherical morphology was realized with the aid of ammonia. The aggregation of Sn...

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Main Authors: Lim, Hong Ngee, R., Nurzulaikha, Harrison, Ian, Lim, S.S., Tan, Wee Tee, Yeo, M.C.
Format: Article
Language:English
English
Published: 2011
Online Access:http://psasir.upm.edu.my/id/eprint/25244/1/Spherical%20Tin%20Oxide.pdf
http://psasir.upm.edu.my/id/eprint/25244/
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Institution: Universiti Putra Malaysia
Language: English
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spelling my.upm.eprints.252442015-10-05T02:43:49Z http://psasir.upm.edu.my/id/eprint/25244/ Spherical Tin Oxide, SnO2 Particles Fabricated via Facile Hydrothermal Method for Detection of Mercury (II) Ions. Lim, Hong Ngee R., Nurzulaikha Harrison, Ian Lim, S.S. Tan, Wee Tee Yeo, M.C. Smooth-surface spherical tin oxide particles were fabricated via hydrothermal processing route. X-ray diffraction (XRD) revealed that the particles consisted of the rutile phase of SnO2 with tetragonal structure. The spherical morphology was realized with the aid of ammonia. The aggregation of SnO2 particles could be avoided by adjusting the concentration of tin (II) chloride. Bare glassy carbon electrode (GCE) was modified with the hydrothermally prepared SnO2 particles to detect the presence of mercury (II) ions (Hg2+), in the presence of potassium chloride (KCl) as a supporting electrolyte. GCE modified with the spherical SnO2 particles that possessed small crystallite size and smooth surface exhibited significantly enhanced oxidative and reductive current of Hg2+ during cyclic voltammetry compared with its bare counterpart. The reductive current was observed to increase by two fold and the detection limit of 75 nM for Hg 2+ was achieved. This suggests that SnO2 particles are a promising chemical sensor for the detection of Hg2+ in natural waters. 2011 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/25244/1/Spherical%20Tin%20Oxide.pdf Lim, Hong Ngee and R., Nurzulaikha and Harrison, Ian and Lim, S.S. and Tan, Wee Tee and Yeo, M.C. (2011) Spherical Tin Oxide, SnO2 Particles Fabricated via Facile Hydrothermal Method for Detection of Mercury (II) Ions. International Journal of Electrochemical Science, 6. pp. 4329-4340. ISSN 1452-3981 English
institution Universiti Putra Malaysia
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content_provider Universiti Putra Malaysia
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language English
English
description Smooth-surface spherical tin oxide particles were fabricated via hydrothermal processing route. X-ray diffraction (XRD) revealed that the particles consisted of the rutile phase of SnO2 with tetragonal structure. The spherical morphology was realized with the aid of ammonia. The aggregation of SnO2 particles could be avoided by adjusting the concentration of tin (II) chloride. Bare glassy carbon electrode (GCE) was modified with the hydrothermally prepared SnO2 particles to detect the presence of mercury (II) ions (Hg2+), in the presence of potassium chloride (KCl) as a supporting electrolyte. GCE modified with the spherical SnO2 particles that possessed small crystallite size and smooth surface exhibited significantly enhanced oxidative and reductive current of Hg2+ during cyclic voltammetry compared with its bare counterpart. The reductive current was observed to increase by two fold and the detection limit of 75 nM for Hg 2+ was achieved. This suggests that SnO2 particles are a promising chemical sensor for the detection of Hg2+ in natural waters.
format Article
author Lim, Hong Ngee
R., Nurzulaikha
Harrison, Ian
Lim, S.S.
Tan, Wee Tee
Yeo, M.C.
spellingShingle Lim, Hong Ngee
R., Nurzulaikha
Harrison, Ian
Lim, S.S.
Tan, Wee Tee
Yeo, M.C.
Spherical Tin Oxide, SnO2 Particles Fabricated via Facile Hydrothermal Method for Detection of Mercury (II) Ions.
author_facet Lim, Hong Ngee
R., Nurzulaikha
Harrison, Ian
Lim, S.S.
Tan, Wee Tee
Yeo, M.C.
author_sort Lim, Hong Ngee
title Spherical Tin Oxide, SnO2 Particles Fabricated via Facile Hydrothermal Method for Detection of Mercury (II) Ions.
title_short Spherical Tin Oxide, SnO2 Particles Fabricated via Facile Hydrothermal Method for Detection of Mercury (II) Ions.
title_full Spherical Tin Oxide, SnO2 Particles Fabricated via Facile Hydrothermal Method for Detection of Mercury (II) Ions.
title_fullStr Spherical Tin Oxide, SnO2 Particles Fabricated via Facile Hydrothermal Method for Detection of Mercury (II) Ions.
title_full_unstemmed Spherical Tin Oxide, SnO2 Particles Fabricated via Facile Hydrothermal Method for Detection of Mercury (II) Ions.
title_sort spherical tin oxide, sno2 particles fabricated via facile hydrothermal method for detection of mercury (ii) ions.
publishDate 2011
url http://psasir.upm.edu.my/id/eprint/25244/1/Spherical%20Tin%20Oxide.pdf
http://psasir.upm.edu.my/id/eprint/25244/
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