Non-enzymatic amperometric detection of hydrogen peroxide in human blood serum samples using a modified silver nanowire electrode

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• 作者：Balamurugan Thirumalraj ; Duo-Han Zhao ; Shen-Ming Chen ; ^{smchen78@ms15.hinet.net" class="auth_mail" title="E-mail the corresponding author} ; Selvakumar Palanisamy
• 关键词：Silver nanowires ; Screen printed carbon electrode ; Hydrogen peroxide ; Non-enzymatic sensor
• 刊名：Journal of Colloid and Interface Science
• 出版年：2016
• 出版时间：15 May 2016
• 年：2016
• 卷：470
• 期：Complete
• 页码：117-122
• 全文大小：1384 K

文摘

In this paper, we report a highly sensitive amperometric H₂O₂ sensor based on silver nanowires (AgNWs) modified screen printed carbon electrode. The AgNWs were synthesized using polyol method. The synthesized AgNWs were characterized by scanning electron microscopy, UV–vis spectroscopy and X-ray diffraction techniques. The average diameter and length of the synthesized AgNWs were found as 86 ± 5 and 385 nm, respectively. Under optimum conditions, the AgNWs modified electrode shows a stable amperometric response for H₂O₂ and was linear over the concentrations ranging from 0.3 to 704.8 μM. The non-enzymatic sensor showed a high sensitivity of 662.6 μA mM⁻¹ cm⁻² with a detection limit of 29 nM. The response time of the sensor was found as 2 s. Furthermore, the AgNWs modified electrode exhibited a good recovery of H₂O₂ (94.3%) in the human blood serum samples.