Mesoporous-TiO2 nanoparticles based carbon paste electrodes exhibit enhanced electrochemical sensitivity for phenols

2.50
Hdl Handle:
http://hdl.handle.net/2173/87545
Title:
Mesoporous-TiO2 nanoparticles based carbon paste electrodes exhibit enhanced electrochemical sensitivity for phenols
Authors:
Lin, Huogang; Ji, Xiaobo; Chen, Qiyuan; Zhou, Yikai; Banks, Craig E.; Wu, Kangbing
Citation:
Electrochemistry communications, 2009, vol. 11, no. 10, pp.1990-1995
Publisher:
Elsevier Inc.
Issue Date:
2009
URI:
http://hdl.handle.net/2173/87545
DOI:
10.1016/j.elecom.2009.08.034
Additional Links:
http://www.elsevier.com/locate/elecom
Abstract:
Mesoporous-TiO2 nanoparticles (meso-TiO2) and nano-TiO2 particles (nano-TiO2) were synthesized and characterized using scanning electron microscopy. The electrochemical behaviours of carbon paste electrodes (CPE), nano-TiO2/CPE and meso-TiO2/CPE were investigated using K3[Fe(CN)6] as the electrochemical probe. It was observed that the peak potential separation was remarkably decreased at the meso-TiO2/CPE with higher peak currents in comparison with the other two CPEs. Moreover, the electrochemical performance towards phenol and p-substituted phenol detection was studied with remarkably enhanced oxidation signals at meso-TiO2/CPE. The meso-TiO2 shows considerable surface enhancement effects towards phenols which increase linearly with Hammett’s constants. Additionally at higher NaCl concentrations, the oxidation peak currents of phenols notably increases at meso-TiO2/CPE, while remaining unchanged at CPE and nano-TiO2/CPE. In summary meso-TiO2 nanoparticles are superior electrode materials for electrocatalysis.
Type:
Article
Language:
en
Description:
Full-text of this article is not available in this e-prints service. This article was originally published following peer-review in Electrochemistry Communications, published by and copyright Elsevier.
Keywords:
Mesoporous-TiO2 nanoparticles; Phenol; Carbon paste electrodes; Electrochemistry
ISSN:
1388-2481
EISSN:
1873-1902

Full metadata record

DC FieldValue Language
dc.contributor.authorLin, Huogangen
dc.contributor.authorJi, Xiaoboen
dc.contributor.authorChen, Qiyuanen
dc.contributor.authorZhou, Yikaien
dc.contributor.authorBanks, Craig E.en
dc.contributor.authorWu, Kangbingen
dc.date.accessioned2009-12-08T15:01:19Z-
dc.date.available2009-12-08T15:01:19Z-
dc.date.issued2009-
dc.identifier.citationElectrochemistry communications, 2009, vol. 11, no. 10, pp.1990-1995en
dc.identifier.issn1388-2481-
dc.identifier.doi10.1016/j.elecom.2009.08.034-
dc.identifier.urihttp://hdl.handle.net/2173/87545-
dc.descriptionFull-text of this article is not available in this e-prints service. This article was originally published following peer-review in Electrochemistry Communications, published by and copyright Elsevier.en
dc.description.abstractMesoporous-TiO2 nanoparticles (meso-TiO2) and nano-TiO2 particles (nano-TiO2) were synthesized and characterized using scanning electron microscopy. The electrochemical behaviours of carbon paste electrodes (CPE), nano-TiO2/CPE and meso-TiO2/CPE were investigated using K3[Fe(CN)6] as the electrochemical probe. It was observed that the peak potential separation was remarkably decreased at the meso-TiO2/CPE with higher peak currents in comparison with the other two CPEs. Moreover, the electrochemical performance towards phenol and p-substituted phenol detection was studied with remarkably enhanced oxidation signals at meso-TiO2/CPE. The meso-TiO2 shows considerable surface enhancement effects towards phenols which increase linearly with Hammett’s constants. Additionally at higher NaCl concentrations, the oxidation peak currents of phenols notably increases at meso-TiO2/CPE, while remaining unchanged at CPE and nano-TiO2/CPE. In summary meso-TiO2 nanoparticles are superior electrode materials for electrocatalysis.en
dc.language.isoenen
dc.publisherElsevier Inc.en
dc.relation.urlhttp://www.elsevier.com/locate/elecomen
dc.subjectMesoporous-TiO2 nanoparticlesen
dc.subjectPhenolen
dc.subjectCarbon paste electrodesen
dc.subjectElectrochemistryen
dc.titleMesoporous-TiO2 nanoparticles based carbon paste electrodes exhibit enhanced electrochemical sensitivity for phenolsen
dc.typeArticleen
dc.identifier.eissn1873-1902-
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