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

被引：50

作者：

Lin, Huogang ^{[2
]}

Ji, Xiaobo ^{[1
]}

Chen, Qiyuan ^{[1
]}

Zhou, Yikai ^{[2
]}

Banks, Craig E. ^{[3
]}

Wu, Kangbing ^{[2
]}

机构：

[1] Cent S Univ, Coll Chem & Chem Engn, Changsha 410083, Hunan, Peoples R China

[2] Huazhong Univ Sci & Technol, Dept Chem, MOE Key Lab Environm & Hlth, Wuhan 430074, Peoples R China

[3] Manchester Metropolitan Univ, Div Chem & Mat, Fac Sci & Engn, Sch Biol Chem & Hlth Sci, Manchester M1 5GD, Lancs, England

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2009年 / 11卷 / 10期

关键词：

Mesoporous-TiO2; nanoparticles; Phenol; Carbon paste electrodes; Electrochemistry; PLATINUM-ELECTRODE; TIO2; OXIDATION; OXIDE;

D O I：

10.1016/j.elecom.2009.08.034

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

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 K-3[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. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：1990 / 1995

页数：6

共 20 条

[1] Structured Mesoporous Tin Oxide with Electrical Conductivity. Application in Electroluminescence [J].

Aprile, Carmela ;

Teruel, Laura ;

Alvaro, Mercedes ;

Garcia, Hermenegildo .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2009, 131 (04) :1342-+

[2] Modification of mesoporous TiO2 electrodes with cross-linkable B12 derivatives [J].

Asaftei, Simona ;

Walder, Lorenz .

LANGMUIR, 2006, 22 (13) :5544-5547

[3] Solid-state dye-sensitized mesoporous TiO2 solar cells with high photon-to-electron conversion efficiencies [J].

Bach, U ;

Lupo, D ;

Comte, P ;

Moser, JE ;

Weissörtel, F ;

Salbeck, J ;

Spreitzer, H ;

Grätzel, M .

NATURE, 1998, 395 (6702) :583-585

[4] Ionic strength-controlled virtual area of mesoporous platinum electrode [J].

Boo, H ;

Park, S ;

Ku, BY ;

Kim, Y ;

Park, JH ;

Kim, HC ;

Chung, TD .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2004, 126 (14) :4524-4525

[5]

DEAN J.A., 1987, HDB ORGANIC CHEM

[6] Electrocatalytic activity and simultaneous determination of catechol and hydroquinone at mesoporous platinum electrode [J].

Ghanem, Mohamed A. .

ELECTROCHEMISTRY COMMUNICATIONS, 2007, 9 (10) :2501-2506

[7] Preparation of Pt/mesoporous carbon (MC) electrode catalyst and its reactivity toward oxygen reduction [J].

Hayashi, Akari ;

Notsu, Hideo ;

Kimijima, Ken'ichi ;

Miyamoto, Junichi ;

Yagi, Ichizo .

ELECTROCHIMICA ACTA, 2008, 53 (21) :6117-6125

[8] ORDERED MESOPOROUS MOLECULAR-SIEVES SYNTHESIZED BY A LIQUID-CRYSTAL TEMPLATE MECHANISM [J].

KRESGE, CT ;

LEONOWICZ, ME ;

ROTH, WJ ;

VARTULI, JC ;

BECK, JS .

NATURE, 1992, 359 (6397) :710-712

[9] Mesoporous Au/TiO2 nanocomposites with enhanced photocatalytic activity [J].

Li, Hexing ;

Bian, Zhenfeng ;

Zhu, Jian ;

Huo, Yuning ;

Li, Hui ;

Lu, Yunfeng .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2007, 129 (15) :4538-+

[10] Synthesis of mesostructured titania with controlled crystalline framework [J].

Luo, HM ;

Wang, C ;

Yan, YS .

CHEMISTRY OF MATERIALS, 2003, 15 (20) :3841-3846

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