Derivatised carbon powder electrodes: reagentless pH sensors

被引:86
作者
Leventis, HC
Streeter, I
Wildgoose, GG
Lawrence, NS
Jiang, L
Jones, TGJ
Compton, RG
机构
[1] Univ Oxford, Phys & Theoret Chem Lab, Oxford OX1 3QZ, England
[2] Schlumberger Cambridge Res Ltd, Cambridge CB3 0EL, England
关键词
pH; derivatised carbon; physical adsorption; chemical adsorption; temperature;
D O I
10.1016/j.talanta.2004.01.017
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
In this report, we derivatise carbon powder with anthracene, azobenzene, diphenylamine, 9,10-diphenylanthracene, methylene blue, 3-nitrofluoranthene, 6-nitrochrysene, 9-nitroanthracene, 9, 10-phenanthraquinone (PAQ), thionin, and fast black K (2,5-dimethoxy-4-[(4-nitrophenyl)azo]benzenediazonium chloride) and separately immobilise the resulting material onto a bppg electrode. We use cyclic voltammetry (CV) to demonstrate that the observed voltammetric response for each derivatised carbon is consistent with that of an immobilised species. Further, we use CV and square wave voltammetry (SWV) to investigate the effect of pH on the peak potentials of each compound studied over the range pH 1-12 and at elevated temperatures up to 70degreesC in order to demonstrate the versatility of derivatised carbon electrodes as reagentless pH sensors. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码:1039 / 1051
页数:13
相关论文
共 63 条
[1]   ELECTROCHEMICAL STUDY OF KINETICS OF A CHEMICAL REACTION COUPLED BETWEEN 2 CHARGE TRANSFER REACTIONS - POTENTIOSTATIC REDUCTION OF P-NITROSOPHENOL [J].
ALBERTS, GS ;
SHAIN, I .
ANALYTICAL CHEMISTRY, 1963, 35 (12) :1859-&
[2]   Covalent modification of carbon surfaces by aryl radicals generated from the electrochemical reduction of diazonium salts [J].
Allongue, P ;
Delamar, M ;
Desbat, B ;
Fagebaume, O ;
Hitmi, R ;
Pinson, J ;
Saveant, JM .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1997, 119 (01) :201-207
[3]  
[Anonymous], 1987, Biosensors Fundamentals and Applications
[4]   Fabrication and characterization of a hydroquinone-functionalized polypyrrole thin-film pH sensor [J].
AquinoBinag, CN ;
Kumar, N ;
Lamb, RN ;
Pigram, PJ .
CHEMISTRY OF MATERIALS, 1996, 8 (11) :2579-2585
[5]   Control of the electrochemical reduction of o-nitrophenol by pH imposition in acetonitrile [J].
Baeza, A ;
Ortiz, JL ;
Gonzalez, I .
JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1997, 429 (1-2) :121-127
[6]   Electrochemical synthesis of highly electroactive polydiphenylamine/polybenzidine copolymer in aqueous solutions [J].
Bagheri, A ;
Nateghi, MR ;
Massoumi, A .
SYNTHETIC METALS, 1998, 97 (02) :85-89
[7]   New IUPAC recommendations on the measurement of pH - background and essentials [J].
Baucke, FGK .
ANALYTICAL AND BIOANALYTICAL CHEMISTRY, 2002, 374 (05) :772-777
[8]   THE GLASS-ELECTRODE - APPLIED ELECTROCHEMISTRY OF GLASS SURFACES [J].
BAUCKE, FGK .
JOURNAL OF NON-CRYSTALLINE SOLIDS, 1985, 73 (1-3) :215-231
[9]   MECHANISTIC STUDY OF THE VOLTAMMETRY OF NONCONDUCTING MICROCRYSTALLINE CIS-CR(CO)(2)(DPE)(2) AND TRANS-CR(CO)(2)(DPE)(2) COMPLEXES (DPE=PH(2)PCH(2)CH(2)PPH(2)) MECHANICALLY ATTACHED TO A GRAPHITE ELECTRODE AND IMMERSED IN DIFFERENT AQUEOUS-ELECTROLYTE MEDIA - IDENTIFICATION BY INFRARED-SPECTROSCOPY OF CIS-[CR(CO)(2)(DPE)(2)](+) STABILIZED AT THE ELECTRODE SOLID-SOLUTION INTERFACE [J].
BOND, AM ;
COLTON, R ;
MARKEN, F ;
WALTER, JN .
ORGANOMETALLICS, 1994, 13 (12) :5122-5131
[10]   Electrochemical and X-ray diffraction study of the redox cycling of nanocrystals of 7,7,8,8-tetracyanoquinodimethane - Observation of a solid-solid phase transformation controlled by nucleation and growth [J].
Bond, AM ;
Fletcher, S ;
Marken, F ;
Shaw, SJ ;
Symons, PG .
JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS, 1996, 92 (20) :3925-3933