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Catalytic Current Based on Direct Electron Transfer Reactions of Enzymes Immobilized onto Carbon Nanotubes

机译：基于固定在碳纳米管上的酶直接电子转移反应的催化电流

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Multi-walled and single-walled carbon nanotubes were synthesized on platinum plate (MWCNTs/pt) and gold wire (SWCNTs/Au) electrodes, respectively, using a chemical vapor deposition (CVD) method. These carbon nanotube-modified electrodes were immersed into solutions of glucose oxidase (GOX) and D-fructose dehydrogenase (FDH) to immobilize these enzymes onto the electrode surfaces. After GOX was immobilized onto the MWCNT/Pt electrode, the well-defined catalytic oxidation current was increased from ca. -0.45V (vs. Ag/AgCl/saturated KCl), which was close to the redox potential of flavin adenine dinucleotide as a prosthetic group of GOX under physiological pH values. Furthermore, catalytic oxidation currents of fructose based on direct heterogeneous electron transfer reactions between FDH and the SWCNT/Pt electrode were observed.
机译：使用化学气相沉积（CVD）方法，在铂板（MWCNTS / PT）和金线（SWCNTS / AU）电极上合成多壁和单壁碳纳米管。将这些碳纳米管改性的电极浸入葡萄糖氧化酶（GOX）和D-果糖脱氢酶（FDH）的溶液中以将这些酶固定到电极表面上。在将GOX固定到MWCNT / PT电极上后，从CA增加了明确限定的催化氧化电流。 -0.45V（与Ag / AgCl /饱和Kcl），其接近生理pH值下Flavin腺嘌呤二核苷酸的氧化还原潜力作为Gox的假体。此外，观察到基于FDH和SWCNT / PT电极之间的直接非均相电子转移反应的果糖催化氧化电流。

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