Microwave-assisted preparation of a carbon nanotube/La(OH)3 nanocomposite, and its application to electrochemical determination of adenine and guanine

Abstract.A carbon nanotube (CNTs)/lanthanum hydroxide(La(OH)3)nanocomposite was firstly synthesized, and characterized in terms of structure and morphology through X-ray diffraction analysis and transmission electron microscopy. The electrochemical behavior and potential electrochemical applications of the nanocomposite modified electrode were also studied. Cyclic voltammetry was used to probe the characterization of the modified electrode. The modified electrode was used for the determination of adenine and guanine, and the, accelerated electron transfer mechanism was investigated. The result demonstrated that the CNTs/La(OH)3 modified electrode provides an effective method for the determination of adenine and guanine with detection limits 0.22 and 0.26 µM, respectively.

[1]  Jun Li,et al.  The fabrication and electrochemical characterization of carbon nanotube nanoelectrode arrays , 2004 .

[2]  Young Hee Lee,et al.  Crystalline Ropes of Metallic Carbon Nanotubes , 1996, Science.

[3]  Jae Ryoun Youn,et al.  Influence of dispersion states of carbon nanotubes on physical properties of epoxy nanocomposites , 2005 .

[4]  Yuehe Lin,et al.  Low-potential stable NADH detection at carbon-nanotube-modified glassy carbon electrodes , 2002 .

[5]  Y. Liu,et al.  Beaded Cobalt Oxide Nanoparticles along Carbon Nanotubes: Towards More Highly Integrated Electronic Devices , 2005 .

[6]  Ping Zhang,et al.  Selective response of dopamine in the presence of ascorbic acid at multi-walled carbon nanotube modified gold electrode. , 2005, Bioelectrochemistry.

[7]  S. Iijima.  Helical microtubules of graphitic carbon , 1991, Nature.

[8]  S. Jiang,et al.  Synthesis and characterization of platinum catalysts on multiwalled carbon nanotubes by intermittent microwave irradiation for fuel cell applications. , 2006, The journal of physical chemistry. B.

[9]  Ji Liang,et al.  Oxidation of multiwalled carbon nanotubes by air: benefits for electric double layer capacitors , 2004 .

[10]  Guillermina L. Luque,et al.  Glucose Biosensor Based on the Use of a Carbon Nanotube Paste Electrode Modified with Metallic Particles , 2006 .

[11]  Liyi Shi,et al.  Ultrasonic-assisted preparation of carbon nanotube/cerium oxide composites , 2006 .

[12]  C. Dekker,et al.  Logic Circuits with Carbon Nanotube Transistors , 2001, Science.

[13]  Joseph Wang,et al.  Carbon nanotube/teflon composite electrochemical sensors and biosensors. , 2003, Analytical chemistry.

[14]  Yuehe Lin,et al.  PtRu/carbon nanotube nanocomposite synthesized in supercritical fluid: a novel electrocatalyst for direct methanol fuel cells. , 2005, Langmuir : the ACS journal of surfaces and colloids.

[15]  Hongyuan Chen,et al.  Simultaneous determination of guanine and adenine in DNA using an electrochemically pretreated glassy carbon electrode , 2002 .

[16]  N. Nasirizadeh,et al.  Voltammetric studies of an oracet blue modified glassy carbon electrode and its application for the simultaneous determination of dopamine, ascorbic acid and uric acid , 2006 .

[17]  Daoben Zhu,et al.  Carbon Nanotubes Coated with Alumina as Gate Dielectrics of Field‐Effect Transistors , 2006 .

[18]  Yi Chen,et al.  Electrostatic layer-by-layer assembled carbon nanotube multilayer film and its electrocatalytic activity for O2 reduction. , 2004, Langmuir : the ACS journal of surfaces and colloids.

[19]  G. Rivas,et al.  Carbon nanotubes paste electrode , 2003 .

[20]  Cengiz S. Ozkan,et al.  Covalent Coupling of Quantum Dots to Multiwalled Carbon Nanotubes for Electronic Device Applications , 2003 .

[21]  P. He,et al.  Applications of Carbon Nanotubes in Electrochemical DNA Biosensors , 2005 .

[22]  Richard G Compton,et al.  Glucose biosensor prepared by glucose oxidase encapsulated sol-gel and carbon-nanotube-modified basal plane pyrolytic graphite electrode. , 2004, Analytical biochemistry.

[23]  D. Bethune,et al.  Storage of hydrogen in single-walled carbon nanotubes , 1997, Nature.

[24]  Kunlin Wang,et al.  Coated double-walled carbon nanotubes with ceria nanoparticles , 2005 .

[25]  Dusan Losic,et al.  Protein electrochemistry using aligned carbon nanotube arrays. , 2003, Journal of the American Chemical Society.

[26]  S. Dong,et al.  Electrochemical characteristics of facile prepared carbon nanotubes-ionic liquid gel modified microelectrode and application in bioelectrochemistry , 2006 .

[27]  P. Ajayan,et al.  Applications of Carbon Nanotubes , 2001 .

[28]  W. D. de Heer,et al.  Carbon Nanotubes--the Route Toward Applications , 2002, Science.

[29]  Yuehe Lin,et al.  Solubilization of carbon nanotubes by Nafion toward the preparation of amperometric biosensors. , 2003, Journal of the American Chemical Society.

[30]  Peng Hu,et al.  Coating Carbon Nanotubes with Rare Earth Oxide Multiwalled Nanotubes , 2004 .

[31]  Guangfeng Wang,et al.  Determination of rutin using a CeO2 nanoparticle-modified electrode , 2007 .

[32]  Wei-Hua Huang,et al.  Carbon fiber nanoelectrodes modified by single-walled carbon nanotubes. , 2003, Analytical chemistry.

[33]  Richard J. Coles,et al.  Protein electrochemistry at carbon nanotube electrodes , 1997 .

[34]  P. Ajayan.  Nanotubes from Carbon. , 1999, Chemical reviews.

[35]  Todd D. Krauss,et al.  Attachment of Single CdSe Nanocrystals to Individual Single-Walled Carbon Nanotubes , 2002 .

[36]  F. Wu,et al.  CeO2 nanorods and gold nanocrystals supported on CeO2 nanorods as catalyst. , 2005, The journal of physical chemistry. B.

[37]  Tianyan You,et al.  Characterization of platinum nanoparticle-embedded carbon film electrode and its detection of hydrogen peroxide. , 2003, Analytical chemistry.

[38]  Zonghua Wang,et al.  β-Cyclodextrin incorporated carbon nanotubes-modified electrodes for simultaneous determination of adenine and guanine , 2006 .

[39]  Guangfeng Wang,et al.  Fabrication of CeO2 nanoparticles modified glassy carbon electrode and its application for electrochemical determination of UA and AA simultaneously , 2006 .

[40]  M. Pumera,et al.  New materials for electrochemical sensing VI: Carbon nanotubes , 2005 .

[41]  Rajesh R Naik,et al.  Peptide-mediated formation of single-wall carbon nanotube composites. , 2006, Nano letters.

[42]  Joseph Wang,et al.  Carbon nanotube-modified glassy carbon electrode for adsorptive stripping voltammetric detection of ultratrace levels of 2,4,6-trinitrotoluene , 2004 .

[43]  Hongwu Zhang,et al.  Layer-by-layer assembled carbon nanotubes for selective determination of dopamine in the presence of ascorbic acid. , 2004, Biosensors & bioelectronics.

[44]  Hua Song,et al.  A simple sol–gel technique for preparing lanthanum oxide nanopowders , 2006 .