Detection of Nitrite by Copper Interdigital with Nickel-Cobalt Nanowires

• Main Authors: Guo-Hao Shen, 沈國豪
• Other Authors: Yaw-Jen Chang
• Format: Others
• Language: zh-TW
• Published: 2016
• Online Access: http://ndltd.ncl.edu.tw/handle/77983662030623508230

碩士 === 中原大學 === 機械工程研究所 === 104 === This study presents an analytic chip consisting of copper interdigital electrodes (Cu-IDE) and nickel-cobalt alloy nanowires (Ni-Co NWs) for the measurement of nitrate. Surface modification using 5-amino-1,3,4-thiadiazole-2-thio (ATT) was performed to promote the binding ability of Ni-Co NWs with NO_2^- by adding H_2 N functional group. Therefore, the electrical measurement through the Cu-IDE can provide stronger signal of the ionic bond of H_2 N functional group and NO_2^-, based on the principle of adsorption chromatography.In this study, nitrate crystal (measured in dry condition) and nitrate ion (measured in wet condition) were the experimental samples. Measurement result was the current-voltage response. The experimental results show that the lowest concentration of nitrate ion can be measured is 0.04 mM in wet condition. It is better than dry measurement of nitrate crystal with detection limit of 3 mM.