模板電化學沉積法製備金奈米線電極於 強化循環伏安法之研究

Enhanced Cyclic Voltammetry Using Gold Nanoelectrodes Synthesized Via Template Electrochemical Deposition

林敬傑(CHING-CHIEH LIN)

指導教授 ： 王宏文

中原大學/理學院/化學研究所/碩士(2008年)

https://doi.org/10.6840/cycu200900566

摘要

本論文成功地利用電化學沉積法在聚碳酸酯和陽極氧化鋁膜製備
金奈米線，此外奈米金管也可藉由奈米鎳條和氯金酸溶液進行氧化還原
反應來達到，但效果卻不彰，以至於之後選用較大600 nm 孔徑的聚碳
酸酯膜來和成奈米金管，所有這些的金奈米電極都放在鍍金的不鏽鋼平
板電極上面，用於檢測循環伏安計的氧化還原電流值，由實驗結果可以
清楚地發現經過奈米線修飾過的電極因為表面積增大，而可使得偵測靈
敏度增加，並且進一步研究發現，排列整齊的金奈米線會比排列散亂的
金奈米線氧化還原電流值更大，總結一維的奈米線容易增加電催化反
應，因為在奈米結構容易增加擴散的發生。
在這實驗中所有修飾過的奈米金電極都以循環伏安儀進行檢測，此
外簡單的在奈米金電極覆蓋一層葡萄糖氧化酶( GOD )，藉由循環伏安
儀也可檢溶液中測葡萄糖含量。也可將奈米金電極應用在生物晶片上，
使用寡核酸修飾過的奈米金條電極在電催化核甘酸上的分析，可以提供
很好的靈敏度在奈米DNA 感測系統上。

關鍵字

金奈米線

並列摘要

Gold nanarods were successfully fabricated by using polycarbonate
membranes and anodic aluminum oxide (AAO) membranes as growing
templates under electrochemical deposition. Gold nanotubes are carried out
by redox reaction between Nickel and HAuCl4. We have used 600 nm
polycarbonate membranes as growing templates to fabricate gold nanotubes.
These gold nanoelectrodes were deposited on the gold-coated working
electrode of cyclic voltammetry, where an enhanced current-voltage
voltammograms were obtained. The enhanced sensitivity is achieved with
the large electrocatalytic signals at amplified surface area using
nanorod-modified working electrodes. Current-voltage voltammograms
using ordered gold nanorod arrays are enhanced more than those using
disordered gold nanorods. Current-voltage voltammograms using gold
nanotubes are enhanced more than those of gold nanorods. The results
strongly suggested that the gold nanoelectrodes facilitated the
electrocatalytic reactions due to enhanced diffusion occurring around these
nano-structures.
In this study, the modified gold nanoelectrodes and the related
electrochemical characteristics were analyzed using cyclic voltammetry
(CV). The glucose electrodes by simple surface coatings of GOD on gold
nanorods were constructed. The sensitivity was also analyzed by cyclic
voltammetry. A nanoscale approach to DNA biosensing that uses
oligonucleotide-functionalized Au nanoelectrode was also studied.The
marriage of these novel electrodes with an electrocatalytic nucleic acid
detection assay provides a very sensitive nanoscale DNA detection system.

並列關鍵字

Gold nanarods were

參考文獻

organic/inorganic hybrid nanocomposite film for label-free

53呂剛劦，2003，奈米金修飾壓電晶體生物感測器之研究，國立雲林

characterization of high-density ferromagnetic nanowire

galactose oxidase-mediated electrocatalysis using a virtual beaker array’’

Biotechnology letters,28(17),(2006),1401-8