期刊
ANALYST
卷 138, 期 17, 页码 5025-5030出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3an00317e
关键词
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资金
- Global Research Laboratory (GRL) Program through the National Research Foundation of Korea (NRF) [K20704000003TA050000310]
- Ministry of Science, ICT (Information and Communication Technologies) and Future Planning
- International Cooperation program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP)
- Korea government of Ministry of Trade, Industry Energy [2011T100100369]
- Nano-Material Technology Development Program [2012035286]
- World Class University (WCU) Program through the NRF [R31-10092]
- Ministry of Science, ICT and Future Planning
- Korea Evaluation Institute of Industrial Technology (KEIT) [20118510010020] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- National Research Foundation of Korea [R31-2012-000-10092-0, 2011-0022757, 2012M3A7B4035287, 2013R1A2A2A03015161, 2013K1A1A2032443] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Robust composite nanofibers (NFs) are prerequisite for highly efficient electrochemical sensors. We report the electrochemical application of gold nanoparticle (Au NP)-composite Nafion NFs using a facile electrospinning technique. Owing to the uniform distribution and large surface area of the Au NPs in the NFs, the Au NP-composite electrodes gave rise to greatly improved electrochemical properties, compared to AuNP-free composite electrodes. When they were employed as reservoirs for immobilizing horseradish peroxidase (HRP), reliable and sensitive electrochemical detection by the enzyme reaction was achieved. The detection sensitivity for H2O2 was determined to be as low as 38 nM, which was one order higher than that of previous electrochemical sensors. In addition, there was no change in the enzyme stability over three weeks. In this regard, the developed NP/NF-based electrochemical sensors are anticipated to be very suitable for monitoring other enzyme reactions with high sensitivity and stability.
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