纳米材料
抗坏血酸
纳米线
选择性
电化学
催化作用
惰性
纳米技术
生物传感器
材料科学
电极
化学
电化学气体传感器
过氧化物酶
葡萄糖氧化酶
线性范围
化学工程
出处
期刊:Analyst
[The Royal Society of Chemistry]
日期:2011-09-26
卷期号:136 (20): 4241-4246
被引量:136
摘要
Fe2O3 was generally considered to be biologically and electrochemically inert, and its electrocatalytic functionality has been rarely realized directly in the past. In this work, Fe2O3 nanowire arrays were synthesized and electrochemically characterized. The as prepared Fe2O3 nanomaterial was proved to be an ideal electrode material due to the intrinsic peroxidase-like catalytic activity. The Fe2O3 nanowire array modified glucose sensor exhibited excellent biocatalytic performance towards the oxidation of glucose with a response time of <6 s, a linear range between 0.015–8 mM, and sensitivity of 726.9 μA mM−1cm−1. Additionally, a high sensing selectivity towards glucose oxidation in the presence of ascorbic acid (AA) and dopamine (DA) has also been obtained at their maximum physiological concentrations, which makes the Fe2O3 nanomaterial promising for the development of effective electrochemical sensors for practical applications.
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