Fabrication of High Surface-area Copper Electrodes for the Application of Electrochemical Sensors
碩士 === 國立中興大學 === 生物產業機電工程學系所 === 100 === In the development of commercial biosensors, it is one of the important trends to reduce the electrode fabrication costs, improve the sensitivity, and lower the detection limit. In this study, a method of fabricating high surface-area copper electrode has be...
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ndltd-TW-100NCHU54150082018-04-10T17:21:58Z http://ndltd.ncl.edu.tw/handle/kf5sst Fabrication of High Surface-area Copper Electrodes for the Application of Electrochemical Sensors 高表面積化銅電極的製作與在電化學感測器的應用 Chiuan-Ting Jiang 江權庭 碩士 國立中興大學 生物產業機電工程學系所 100 In the development of commercial biosensors, it is one of the important trends to reduce the electrode fabrication costs, improve the sensitivity, and lower the detection limit. In this study, a method of fabricating high surface-area copper electrode has been developed. By applying -0.181 V potential at 50oC in 1 M NaOH, the 2.84 ± 0.31-μm long needles-like Cu(OH)2 nanostructures can be reproducibly produced. However, the Cu(OH)2-deposited electrodes presented a poor conductivity without obvious redox reaction. Therefore, the dipping treatment for the alteration from the Cu(OH)2 nanostrctures to the sheet-like Cu3(PO4)2.2H2O nanostructures in pH-varied 100 mM Na2HPO4.Cu(OH)2 (pH5.0-7.0) has been discussed by the dissolution of Cu(OH)2 and the redeposition of Cu3(PO4)2.2H2O. The results show that the thickness, 51.9 ± 8.63 nm, of Cu3(PO4)2.2H2O nanosheets produced in 100 mM Na2HPO4 of pH 5.0 has the least variation and the best uniformity. To compare the electrochemical properties of Cu3(PO4)2.2H2O electrodes deposited in pH-varied 100 mM Na2HPO4 solution, the redox overpotential of Cu(0) and Cu(+2) increased with the decrase of Na2HPO4 pH values, and the redox peak current increased with the decreasing pH. Especially, the Cu3(PO4)2.2H2O-deposited electrodes fabricated in 100 mM Na2HPO4 of pH 5.0 exhibited high stability and reproducibility. Ching-Chou Wu 吳靖宙 博士 2012 學位論文 ; thesis 76 zh-TW |
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碩士 === 國立中興大學 === 生物產業機電工程學系所 === 100 === In the development of commercial biosensors, it is one of the important trends to reduce the electrode fabrication costs, improve the sensitivity, and lower the detection limit. In this study, a method of fabricating high surface-area copper electrode has been developed. By applying -0.181 V potential at 50oC in 1 M NaOH, the 2.84 ± 0.31-μm long needles-like Cu(OH)2 nanostructures can be reproducibly produced. However, the Cu(OH)2-deposited electrodes presented a poor conductivity without obvious redox reaction. Therefore, the dipping treatment for the alteration from the Cu(OH)2 nanostrctures to the sheet-like Cu3(PO4)2.2H2O nanostructures in pH-varied 100 mM Na2HPO4.Cu(OH)2 (pH5.0-7.0) has been discussed by the dissolution of Cu(OH)2 and the redeposition of Cu3(PO4)2.2H2O. The results show that the thickness, 51.9 ± 8.63 nm, of Cu3(PO4)2.2H2O nanosheets produced in 100 mM Na2HPO4 of pH 5.0 has the least variation and the best uniformity. To compare the electrochemical properties of Cu3(PO4)2.2H2O electrodes deposited in pH-varied 100 mM Na2HPO4 solution, the redox overpotential of Cu(0) and Cu(+2) increased with the decrase of Na2HPO4 pH values, and the redox peak current increased with the decreasing pH. Especially, the Cu3(PO4)2.2H2O-deposited electrodes fabricated in 100 mM Na2HPO4 of pH 5.0 exhibited high stability and reproducibility.
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author2 |
Ching-Chou Wu |
author_facet |
Ching-Chou Wu Chiuan-Ting Jiang 江權庭 |
author |
Chiuan-Ting Jiang 江權庭 |
spellingShingle |
Chiuan-Ting Jiang 江權庭 Fabrication of High Surface-area Copper Electrodes for the Application of Electrochemical Sensors |
author_sort |
Chiuan-Ting Jiang |
title |
Fabrication of High Surface-area Copper Electrodes for the Application of Electrochemical Sensors |
title_short |
Fabrication of High Surface-area Copper Electrodes for the Application of Electrochemical Sensors |
title_full |
Fabrication of High Surface-area Copper Electrodes for the Application of Electrochemical Sensors |
title_fullStr |
Fabrication of High Surface-area Copper Electrodes for the Application of Electrochemical Sensors |
title_full_unstemmed |
Fabrication of High Surface-area Copper Electrodes for the Application of Electrochemical Sensors |
title_sort |
fabrication of high surface-area copper electrodes for the application of electrochemical sensors |
publishDate |
2012 |
url |
http://ndltd.ncl.edu.tw/handle/kf5sst |
work_keys_str_mv |
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