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首页> 外文期刊>International Journal of Electrochemical Science >Platinum Nanoparticles (PtNPs) - Laccase Assisted Biocathode Reduction of Oxygen for Biofuel Cells
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Platinum Nanoparticles (PtNPs) - Laccase Assisted Biocathode Reduction of Oxygen for Biofuel Cells

机译：铂纳米颗粒（PtNPs）-漆酶辅助生物阴极减少生物燃料电池的氧气

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摘要

Reduction of dioxygen catalyzed by laccase was studied at platinum nanoparticles (PtNPs) modifiedelectrodes. PtNPs with laccase are directly fabricated on glassy carbon electrode (GCE) and indium tinoxide electrode (ITO) by simple process. The PtNPs/laccase modified ITO electrode surface has beenstudied in detail using atomic force microscopy (AFM). This PtNPs/laccase modified GCE effectivelyexhibits the electro reduction signals for the detection of oxygen. PtNPs provided large surface area forlaccase base on modified electrode. The PtNPs present on the electrode provided electricalconnectivity between the electrode and the enzyme active sites. The cyclic voltammetry (CVs) hasbeen used for the measurement of electroanalytical properties of analytes by means of modifiedelectrodes. The stabilities of laccase, the reduction potentials and ratios of catalytic to background2 currents were compared. The power densities of biofuel cell was 84 璚/cm at 0.62 V, respectively.The biofuel cell showed highly stable output in long-term performance. Efforts are underway toimprove the interface transfer to achieve higher potential and current output.
机译：在铂纳米粒子（PtNPs）修饰电极上研究了漆酶催化的双氧还原反应。带有漆酶的PtNPs可通过简单的工艺直接在玻璃碳电极（GCE）和氧化铟锡电极（ITO）上制备。 PtNPs /漆酶修饰的ITO电极表面已使用原子力显微镜（AFM）进行了详细研究。这种PtNPs /漆酶修饰的GCE有效地展示了用于检测氧气的电还原信号。 PtNPs在修饰电极的基础上提供了大表面积的漆酶。电极上存在的PtNP在电极和酶活性位点之间提供电连接。循环伏安法（CV）已用于通过修饰电极测量分析物的电分析性能。比较了漆酶的稳定性，还原电位和催化电流与背景电流的比率。在0.62 V下，生物燃料电池的功率密度分别为84璚/ cm。在长期性能方面，该生物燃料电池显示出高度稳定的输出。正在努力改善接口传输，以实现更高的电位和电流输出。

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