A simple degradation method for sulfur mustard at ambient conditions using nickelphthalocyanine incorporated polypyrrole modified electrode
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- 作者：Pushpendra K. Sharma (1)
Bhavna Sikarwar (1)
Garima Gupta (1)
Anil K. Nigam (1)
Brijesh K. Tripathi (1)
Pratibha Pandey (1)
Mannan Boopathi (1)
Kumaran Ganesan (1)
Beer Singh (1) - 关键词：Chemical warfare agents ; Electrocatalysis ; Nickelphthalocyanine ; Sulfur mustard
- 刊名：Applied Nanoscience
- 出版年：2014
- 出版时间：January 2014
- 年：2014
- 卷：4
- 期：1
- 页码：37-46
- 全文大小：747 KB
- 作者单位：Pushpendra K. Sharma (1)
Bhavna Sikarwar (1)
Garima Gupta (1)
Anil K. Nigam (1)
Brijesh K. Tripathi (1)
Pratibha Pandey (1)
Mannan Boopathi (1)
Kumaran Ganesan (1)
Beer Singh (1)
1. Defence Research and Development Establishment, DRDO, Gwalior, 474 002, India - ISSN：2190-5517
文摘
Electrocatalytic degradation of sulfur mustard (SM) was studied using a gold electrode modified with nickelphthalocyanine and polypyrrole (NiPc/pPy/Au) in the presence of a cationic surfactant cetyltrimethyl ammonium bromide. Several techniques such as cyclic voltammetry, scanning electron microscopy, electrochemical impedance spectroscopy, energy dispersive X-ray spectroscopy and Raman spectroscopy have been employed for the characterization of modified electrodes. NiPc/pPy/Au modified electrode exhibited excellent electrochemical sensing and degradation ability towards SM. The present modification indicated two electron involvements in the electrocatalytic degradation of SM in addition to being an irreversible adsorption controlled process. Degraded products were identified by gas chromatography-mass spectrometry. Moreover, electrochemical parameters of oxidation of SM such as heterogeneous rate constant (0.436?s?), transfer coefficient (0.47) and the number of electrons involved (2) were deduced from cyclic voltammetry results. The NiPc/pPy/Au modified electrode showed excellent electrocatalytic degradation towards SM when compared to bare gold, pPy/Au and NiPc/Au modified electrode at ambient conditions.