Electrochemical Sensing of Chemical Warfare Agent Based on Hybrid Material Silver‐aminosilane Graphene Oxide,Electroanalysis

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Electrochemical Sensing of Chemical Warfare Agent Based on Hybrid Material Silver‐aminosilane Graphene Oxide
Electroanalysis ( IF 2.7 ) Pub Date : 2020-04-17 , DOI: 10.1002/elan.202000014
Virendra V. Singh ₁ , Pushpendra K. Sharma ₁ , Anchal Shrivastava ₁ , Pranav K. Gutch ₁ , Kumaran Ganesan ₁ , Mannan Boopathi ₁

Affiliation

The threat from chemical warfare agents (CWAs) imparts an alarming call for the global community not limited to human being but also extends as unprecedented environmental threat, hence, timely detection and degradation in the event of CWAs attack is very crucial. Herein, we describe a hybrid material of 3‐aminopropyltriethoxysilane (APTES) modified graphene oxide (GO) on glassy carbon (GC) electrode along with electrodeposited silver nanodendrimers (AgNDs) for the electrochemical detection and degradation of CWA sulphur mustard (HD). The AgNDs/APTES‐GO hybrid material was characterized by SEM, EDX, BET, TGA, Raman, UV‐Vis, XPS and XRD techniques. The AgNDs/APTES‐GO modified GC electrode was also characterized by cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). Electrochemical studies indicated presence of electrocatalysis owing to the synergistic effect of AgNDs and GO for sensing CWA HD via reductive dehalogenation. The AgNDs/APTES‐GO modified GC electrode exhibited linearity for CWA HD from 5.3 μM to 42.4 μM. Constant potential electrolysis was performed with modified electrode and degradation products were analysed using GC‐MS, highlighting the great potential of graphene based hybrid material. This new strategy provides an opportunity for the development of “detect and destroy” system for the CWAs and other environmental toxic pollutant, which could help in mitigation of on‐ site events for first responders.

中文翻译：

基于杂化材料银-氨基硅烷氧化石墨烯的化学战剂的电化学传感

化学战剂（CWA）的威胁向全球社会发出了令人震惊的呼吁，全球社会不仅限于人类，而且由于前所未有的环境威胁而不断扩大，因此，在CWA遭到攻击时及时发现和降级至关重要。在本文中，我们描述了在玻璃碳（GC）电极上由3-氨基丙基三乙氧基硅烷（APTES）修饰的氧化石墨烯（GO）以及电沉积的银纳米树枝状聚合物（AgNDs）的杂化材料，用于电化学检测和降解CWA芥菜（HD）。通过SEM，EDX，BET，TGA，拉曼，UV-Vis，XPS和XRD技术对AgNDs / APTES-GO混合材料进行了表征。AgNDs / APTES‐GO修饰的GC电极还通过循环伏安法（CV）和电化学阻抗谱（EIS）进行了表征。电化学研究表明，由于AgNDs和GO通过还原性脱卤感测CWA HD的协同作用，因此存在电催化作用。AgNDs / APTES‐GO修饰的GC电极对CWA HD的线性范围为5.3μM至42.4μM。用修饰的电极进行恒电位电解，并使用GC-MS分析降解产物，突出了石墨烯基杂化材料的巨大潜力。这项新策略为CWA和其他环境有毒污染物的“检测和销毁”系统的开发提供了机会，这可能有助于减轻急救人员的现场事件。用修饰的电极进行恒电位电解，并使用GC-MS分析降解产物，突出了石墨烯基杂化材料的巨大潜力。这项新策略为CWA和其他环境有毒污染物的“检测和销毁”系统的开发提供了机会，这可能有助于减轻急救人员的现场事件。用修饰的电极进行恒电位电解，并使用GC-MS分析降解产物，突出了石墨烯基杂化材料的巨大潜力。这项新策略为CWA和其他环境有毒污染物的“检测和销毁”系统的开发提供了机会，这可能有助于减轻急救人员的现场事件。

更新日期：2020-04-17

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