Glucose oxidase-loaded amorphous FeNi-Pt fan-shaped nanostructures and their electrochemical behaviors.
Glucose oxidase-loaded amorphous FeNi-Pt fan-shaped nanostructures and their electrochemical behaviors.
复制标题
负载葡萄糖氧化酶的非晶 FeNi-Pt 扇形纳米结构及其电化学行为。
DOI：
10.1016/j.colsurfb.2013.06.012
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发表时间：
2013
期刊：
影响因子：
--
通讯作者：
Qingsheng Wu
中科院分区：
文献类型：
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作者：
Na Wang;M. Wen;Qingsheng Wu
为了提高酶电极材料的电化学活性，制备了平均长度为1.7 μm的葡萄糖氧化酶（GOD）负载非晶态FeNi-Pt扇形纳米结构。由于FeNi-Pt扇形纳米结构具有非晶态的结构，因此利用其负载GOD的特性成功地促进了葡萄糖溶液的电化学氧化。壳聚糖可以提供比Nafion更好的纳米结构电极的响应。与壳聚糖/Fe 40 Ni 40-Pt 20/GOD/GCE修饰的玻碳电极相比，壳聚糖/Fe 45 Ni 45-Pt 10/GOD/GCE在0.2912 V处的氧化还原峰电位分离较小。当该电极体系中不存在FeNi-Pt时，没有观察到任何电化学响应。此外，还进行了一组壳聚糖与全氟磺酸的平行实验。当将Fe 40 Ni 40-Pt 20纳米结构用于电极系统时，氧化和还原峰电位分别为-0.7341 V和-0.4943 V，峰电位间隔为0.3371 V。
Glucose oxidase (GOD) loaded amorphous FeNi–Pt fan-shaped nanostructures with the average length of ∼7 μm have been synthesized for improving the electrochemical activity of enzyme electrode materials. The electrochemical oxidation of glucose solution has been successfully facilitated using FeNi–Pt fan-shaped nanostructures to load GOD due to their fan-shaped constitution and amorphous nanostructure. Chitosan could provide better response of nanostructure electrode than nafion. Compared with glassy carbon electrode (GCE) modified by chitosan/Fe40Ni40–Pt20/GOD/GCE (GOD-loaded Fe40Ni40–Pt20nanoalloys using chitosan as immobilization-agent), chitosan/Fe45Ni45–Pt10/GOD/GCE presents smaller oxidation and reduction peak potential separation at 0.2912 V. No any electrochemical response can be observed when FeNi–Pt was absent in this electrode system. Additionally, a group of parallel experiments were tested when chitosan was changed to nafion. When Fe40Ni40–Pt20nanostructure was employed to the electrode system, the oxidation and reduction peaks potentials were −0.7341 V and −0.4943 V, respectively, with a peak potential separation of 0.3371 V.