标题：Nanoporous PtAu alloy as an electrochemical sensor for glucose and hydrogen peroxide
作者：Wang, Jinping; Gao, Hua; Sun, Fenglei; Xu, Caixia
作者机构：[Wang, Jinping; Xu, Caixia] Univ Jinan, Sch Chem & Chem Engn, Key Lab Chem Sensing & Anal Univ Shandong, Jinan 250022, Peoples R China.; [Gao, Hua; 更多
通讯作者地址：[Xu, CX]Univ Jinan, Sch Chem & Chem Engn, Key Lab Chem Sensing & Anal Univ Shandong, Jinan 250022, Peoples R China.
来源：SENSORS AND ACTUATORS B-CHEMICAL
关键词：Nanoporous; Platinum; Dealloying; Sensor; Glucose; Hydrogen peroxide
摘要：Nanoporous (NP) PtAu alloy is easily fabricated by a simple and general dealloying method. Characterized by three-dimensional nanospongy architecture with a typical dimension around 5 nm, the as-prepared NP-PtAu alloy shows superior sensing performance towards glucose and hydrogen peroxide (H2O2) with highly sensitive response compared with commercial Pt/C and NP-Pt catalysts. Importantly, NP-PtAu exhibits excellent amperometric durability and long-term stability for H2O2 and glucose. After coating additional nafion on the working electrode, NP-PtAu shows a good anti-interference towards ascorbic acid, uric acid, and dopamine during glucose detection. NP-PtAu alloy holds great application potential for electrochemical sensing with simple preparation, high catalytic activity, and high structure stability. (C) 2013 Elsevier B.V. All rights reserved.