Preparation and physical/electrochemical characterization of carbon nanotube–chitosan modified pencil graphite electrode
Source abstract
Abstract
In this work, preparation and characterization of single-walled carbon nanotube–chitosan (SWNT–chitosan) modified disposable pencil graphite electrode (PGE) was carried out. Firstly, commercial single-walled carbon nanotube was purified and characterized using thermal gravimetric analysis (TGA), Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM) and energy dispersive analysis of X-ray (EDX) for this purpose. Purified SWNT was mixed with chitosan polymer for preparing their composite. Then, PGE was modified with this composite. The characterization of the modified electrode was carried out using atomic force microscopy (AFM). The electrochemical behaviour of the obtained electrode was investigated and compared with the electrochemical behaviour of chitosan modified and unmodified PGEs using cyclic voltammetry (CV), differential pulse voltammetry (DPV) and alternative current (AC) impedance spectroscopy. In order to obtain more sensitive electrochemical signals, the effect of SWNT concentration was studied. This modified electrode also showed electrocatalytic effect for hydrogen evolution.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Conducting polymers and applications · Electrochemical sensors and biosensors · Electrochemical Analysis and Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (40)
Show source-provided references
1. Single-walled carbon nanotubes modified graphite electrodes for electrochemical monitoring of nucleic acids and biomoleculer interactions10.1002/elan.200804422 ↗
2. Carbon nanotubes: past, present, and future
3. Mechanical characterization of nanofibers – a review10.1016/j.compscitech.2005.10.003 ↗
4. Mechanical characterization of carbon nanotube composite materials10.1080/15376490590491792 ↗
5. Catalytically grown carbon nanotubes small diameter have a high young's modulus10.1021/nl051034d ↗
6. Supramolecular chemistry on water-soluble carbon nanotubes for drug loading and delivery10.1021/nn700040t ↗
7. Functionalized carbon nanotubes in drug design and discovery10.1021/ar700089b ↗
8. Highly ordered MWNT-based matrixes: topography at the nanoscale conceived for tissue engineering10.1021/la053067e ↗
9. Decreased functions of astrocytes on carbon nanofiber materials10.1016/j.biomaterials.2003.08.006 ↗
10. Polyethyleneimine functionalized single-walled carbon nanotubes as a substrate for neuronal growth10.1021/jp0441137 ↗
11. Role of carbon nanotubes in electroanalytical chemistry10.1016/j.aca.2008.05.070 ↗
12. Screen-printed electrodes based on carbon nanotubes and cytochrome P450scc for highly sensitive cholesterol biosensors10.1016/j.bios.2008.03.008 ↗
13. Carbon nanotubes for electrochemical sensing10.1016/j.talanta.2007.10.013 ↗
14. Complex and new modification techniques of thiocholine detection electrodes with carbon nanotubes10.1016/j.apsusc.2008.06.075 ↗
15. Direct DNA hybridization at disposable graphite electrodes modified with carbon nanotubes10.1021/ac060202z ↗
16. Carbon nanotubes in analytical sciences10.1007/s00604-005-0439-z ↗
17. Development of a microbial biosensor based on carbon nanotube (CNT) modified electrodes10.1016/j.elecom.2007.04.012 ↗
18. Functionalization of single-walled carbon nanotube by the covalent modification with polymer chains10.1016/j.jcis.2006.10.034 ↗
19. Dispersion and alignment of carbon nanotubes in polymer matrix10.1016/j.mser.2005.04.002 ↗
20. Advances toward bioapplications of carbon nanotubes10.1039/b314481j ↗
21. The use of single walled carbon nanotubes dispersed in a chitosan matrix for preparation of a galactose biosensor10.1016/j.bios.2006.08.014 ↗
22. Decoration of carbon nanotubes with chitosan10.1016/j.carbon.2005.06.020 ↗
23. Comparative study of different cross-linking agents for the immobilization of functionalized carbon nanotubes within a chitosan film supported on a graphite–epoxy composite electrode10.1021/ac900464z ↗
24. DNA biosensor based on chitosan film doped with carbon nanotubes10.1016/j.ab.2005.07.037 ↗
25. Glassy carbon electrodes modified with CNT-dispersed in chitosan: analytical applications for sensing DNA-methylene blue interaction10.1016/j.jelechem.2009.07.022 ↗
26. Carbon nanotube–chitosan system for electrochemical sensing based on dehydrogenase enzymes10.1021/ac049519u ↗
27. The direct electron transfer of glucose oxidase and glucose biosensor based on carbon nanotubes/chitosan matrix10.1016/j.bios.2005.03.003 ↗
28. Direct electrochemistry and reagentless biosensing of glucose oxidase immobilized on chitosan wrapped single-walled carbon nanotubes10.1016/j.talanta.2008.03.028 ↗
29. Application of functionalized carbon nanotubes immobilized into chitosan films in amperometric enzyme biosensors10.1016/j.snb.2009.08.012 ↗
30. Composite film of carbon nanotubes and chitosan for preparation of amperometric hudrogen peroxide biosensor10.1016/j.talanta.2005.05.030 ↗
31. A new hydrogen peroxide biosensor based on gold nanoelectrode ensembles/multiwalled carbon nanotubes/chitosan film-modified electrode10.1016/j.colsurfa.2009.02.038 ↗
32. Nitric acid purification of single-walled carbon nanotubes10.1021/jp035719i ↗
33. High yield purification process of singlewalled carbon nanotubes10.1021/jp0102365 ↗
34. Purification of single-walled carbon nanotubes by a higly efficient and nondestructive approach10.1021/cm8001699 ↗
35. A self-catalytic carbon paste electrode for the detection of vitamin B1210.1021/ac030308j ↗
36. Direct electrochemistry and electrocatalysis of cytochrome c immobilized on gold nanoparticles–chitosan–carbon nanotubes modified electrode10.1016/j.talanta.2007.05.050 ↗
37. A novel DNA biosensor based on ssDNA/Cyt c/l-Cys/GNOs/Chits/GCE10.1016/j.electacta.2008.10.040 ↗
38. Hydrogen evolution reaction on glassy carbon electrode modified with titanyl phthalocyanines10.1016/j.ijhydene.2009.01.013 ↗
39. Electrochemical studies of hydrogen evolution, storage and oxidation on carbon nanotube electrodes10.1016/S0378-7753(03)00097-1 ↗
40. Electrochemical behaviour of single walled carbon nanotubes-hydrogen storage and hydrogen evolution reaction10.1016/j.ijhydene.2009.07.076 ↗