Gold/MnO2 particles decorated on electrodeposited polyaniline toward non-enzymatic electrochemical sensor for glucose
Gold/MnO2 particles decorated on electrodeposited polyaniline toward non-enzymatic electrochemical sensor for glucose
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DOI：
10.1016/j.mne.2023.100175
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发表时间：
2023-04
影响因子：
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通讯作者：
Keisuke Okamoto;Hiroki Kawakami;Yu-An Chien;Tomoyuki Kurioka;W. Chiu;Parthojit Chakraborty;T. Nakamoto;Y. Hsu;M. Sone;T. Chang
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文献类型：
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作者：
Keisuke Okamoto;Hiroki Kawakami;Yu-An Chien;Tomoyuki Kurioka;W. Chiu;Parthojit Chakraborty;T. Nakamoto;Y. Hsu;M. Sone;T. Chang
将纳米金和二氧化锰负载在聚苯胺载体上，作为葡萄糖的非酶电化学传感催化剂。采用电聚合法制备聚苯胺，分别用KAuCl4和KMnO4溶液直接滴加到聚苯胺上，对纳米金粉和MnO2进行修饰。在含0∼50 mM葡萄糖的0.1M KOH溶液中，用循环伏安法评价了其催化氧化葡萄糖的活性。研究发现，修饰顺序对催化剂的催化活性有影响。先进行MnO2修饰，再进行金纳米颗粒修饰，其催化活性较高。在葡萄糖浓度为0.5~10.0 mm范围内，金纳米二氧化锰电极在聚苯胺膜上的灵敏度为13.1cm2 A/μ·mm。
Gold nano-particles and MnO2are decorated on polyaniline support to be used as the catalyst in non-enzymatic electrochemical sensing of glucose. The polyaniline is prepared by electro-polymerization, and decoration of the gold nano-particles and MnO2are conducted by direct-dropping KAuCl4and KMnO4solutions onto the polyaniline, respectively. The catalytic activity in glucose oxidation is evaluated by cyclic voltammetry in 0.1 M KOH containing 0∼50 mM of glucose. The catalytic activity is found to be affected by the sequence of the decoration process. The catalytic activity is higher when the MnO2decoration is conducted before the gold nano-particle decoration. The sensitivity was 13.1 μA/cm2·mM in a glucose concentration of 0.5 to 10.0 mM for an electrode comprised of gold nanoparticles-MnO2on polyaniline.