|
| Determination of Caffeine Using an Electrochemical Sensor Based on the Electropolymerized Molecularly Imprinted Film on a Multi-walled Carbon Nanotube Modified Glassy Carbon Electrode |
| |
| View Full Text Download reader |
| DOI：10.3969/j.issn.1004-4957.年份.月份 |
| KeyWord:multi-walled carbon nanotubes molecular imprinting technique caffeine electrochemical sensor |
| Author | Institution |
| 彭友元 |
泉州师范学院化学与生物科学学院 |
|
| Hits: 4336 |
| Download times: 1364 |
| Abstract: |
| A sensitive molecularly imprinted electrochemical sensor was fabricated for selective detection of caffeine by electroploymerization of o-phenylenediamine on glassy carbon electrode（GCE） modified with multi-walled carbon nanotubes（MWNTs）.The template can be quickly removed in 0.1 mol?L-1 HCl.The molecularly imprinted sensor was characterized by cyclic voltammetry and linear sweep voltammetry.The molecular imprinted polymer based sensor displayed an excellent recognition capacity toward caffeine.The linear sweep voltammetry peak current was linear in the analyte concentration range of 2.0×10-7-2.0×10-5 mol?L-1,with a detection limit of 4.0×10-8 mol?L-1.The sensor was applied in the determination of caffeine in Tieguanyin teas,with recoveries of 94%-106%． |
| Close |