کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1461555 | 989620 | 2014 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A perovskite-type KNbO3 nanoneedles based biosensor for direct electrochemistry of hydrogen peroxide
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
A KNbO3 nanoneedles (KNs) based hydrogen peroxide (H2O2) biosensor was first proposed. Perovskite-type KNs can directly catalyze H2O2. The mechanism can be explained by Molecular Orbital Principles, with the formation of σ-bonding between the eg orbital of surface niobium ions and surface adsorbed oxygen-related intermediate species. Direct electron transfer between the Horseradish peroxidase (HRP) and electrode surface was achieved. Co-catalyst system of both HRP and KNbO3 was introduced to the oxidation of H2O2, thus the as-prepared biosensor exhibited high sensitivity (750 μA mM−1 cm−2) and ultrafast response (1–2 s) to H2O2. Therefore, KNs provide a promising material for enzymes assembly and sensing application.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 40, Issue 6, July 2014, Pages 8111–8116
Journal: Ceramics International - Volume 40, Issue 6, July 2014, Pages 8111–8116
نویسندگان
Bin Cai, Minggang Zhao, Ye Wang, Yu Zhou, Hui Cai, Zhizheng Ye, Jingyun Huang,