A Silicon Nanowire‐Based Electrochemical Sensor with High Sensitivity and Electrocatalytic Activity. (8th February 2013)

• Record Type: Journal Article
• Authors: Su, Shao; Wei, Xinpan; Guo, Yuanyuan; Zhong, Yiling; Su, Yuanyuan; Huang, Qing; Fan, Chunhai; He, Yao
• Is Part Of: Particle and particle systems characterization. Volume 30:Number 4(2013:Apr.)
• Page Start: 326
• Page End: 331
• Publication Date: 2013-02-08
• Subjects: Particles -- Periodicals; 620.43
• DOI: 10.1002/ppsc.201200076
• Languages: English
• ISSNs: 0934-0866

Abstract

<abstract abstract-type="main" xml:lang="en"> <title> <x xml:space="preserve">Abstract</x> </title> <p>A new kind of silicon nanowire (SiNWs)‐based nanoelectrode assembly, a gold‐nanoparticle‐decorated silicon nanowire array (AuNPs@SiNWsAr), is employed for the construction of high‐performance electrochemical sensors. Significantly, the electrochemical nanosensors are capable of sensitive detection of various electroactive molecules (e.g., dopamine (DA), ascorbic acid (AA), hydrogen peroxide (H₂O₂), and glucose). Further, DA molecules loaded on the surface of AuNPs@SiNWsAr preserve stable high electroactivity overnight without special protection, while free DA molecules may lose their biological activity due to severe oxidization in ambient environment. These findings may offer new opportunities for the design of high‐performance electrochemical nanosensors with high sensitivity and robust stability.</p> </abstract>