奈米材料修飾電極的製備、特性及在電化學與生物感測器之應用

Fabrication and Characterization of Nanomaterials Modified Electrodes for the Electrochemical Sensor and Biosensor Applications

S.THIAGARAJAN(Soundappan Thiagarajan)

指導教授 ： 陳生明

國立臺北科技大學/工程學院/工程科技研究所/博士(2009年)

摘要

無資料

關鍵字

奈米粒子 ； 複合薄膜 ； 合金 ； 白金 ； 黃金 ； 銀 ； 鈀 ； 二氧化鈦 ； 多層奈米碳管 ； 多巴胺 ； 腎上腺素 ； 正腎上腺素 ； 抗壞血酸 ； 尿酸 ； 氧氣還原 ； 過氧化氫

並列摘要

Electrochemical fabrication of the nanomaterials modified electrodes hold promise for many scientific and technological applications, such as chemical and biological sensors. Especially, metal and metal oxide nanoparticles fabrication, characterization and application keen a special interest in the field of electroanalytical chemistry. Here, we have successfully fabricated platinum (Pt), gold (Au), silver (Ag) and palladium (Pd) nanoparticles modified electrodes using the electrochemical deposition method. The employment of additive L-cysteine (LC) resulted in the fabrication of two types of PtAu nano hybrid film. Further the gold nanoparticles accompanied with the functionalized multi-walled carbon nanotubes (f-MWCNTs) and glucose oxidase (GOx) nano biocomposite film has been fabricated and successfully characterized by using scanning electrochemical microscopy (SECM). Next, the self adsorbed nano TiO2 modification with nano Au and KI film has also been fabricated. Further attempt has been focused for the successful green synthesis of Ag and Ag-Au bi-metallic nanoparticles using room temperature ionic liquids as greenelectrolyte (1-Butyl-3-methylimidazolium tetrafluoroborate). Furthermore, the oxidized glassy carbon electrode (GCE) has also been employed for the electrode modification process. The scanning electron microscopy (SEM), atomic force microscopy (AFM), X-ray diffraction analysis (XRD), energy dispersive X-ray spectroscopy (EDS) and UV-visible and electrochemical impedance spectroscopic studies (EIS) have been employed for the detailed characterization studies of these nanomaterials modified electrodes. All these proposed film modified electrodes are found to be electrochemically active, stable and successfully employed for the sensing applications of chemically and biologically important compounds. The potential application of the PtAu hybrid film modified electrodes found to be better suited for the simultaneous detection and determination of ascorbic acid (AA), dopamine (DA) and uric acid (UA), epinephrine (EP) and norepinephrine (NEP) in the presence of AA. Next, the Pd nanoparticles modified electrodes directly employed for the selective detection of EP, NEP and DA in the presence of higher concentrations of AA. The f-MWCNT-nano Au-GOx and nano TiO2-Au-KI film modified electrodes have been applied for the detection of LC and hydrogen peroxide. The green synthesized Ag nanoparticles and Ag-Au bimetallic nanoparticles modified electrodes have been successfully utilized for the detection of dissolved oxygen and hydrogen peroxide. The oxidized GCE surface also successfully employed for the simultaneous detection and determination of AA, DA and UA, respectively.

並列關鍵字

Nanoparticles ； Hybrid film ； Bi-metallic ； Platinum ； Gold ； Silver ； Palladium ； TiO2 ； Multi-walled Carbon Nanotubes ； Oxidized Glassy Carbon Electrode ； Dopamine ； Epinephrine ； Norepinephrine ； Ascorbic acid ； Uric acid ； L-Cysteine ； Oxygen Reduction ； H2O2

參考文獻

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