In this work, a chemiresistor gas sensor based on chemically reduced graphene oxide (CRGO) for selective detection of dimethyl methyl phosphonate (DMMP) as a nerve agent simulant was developed. The reduction of graphene oxide was performed by various reducing agents such as glucose, ascorbic acid, hydrazine hydrate and p-phenylenediamine (PPD). The efficient dispersion of CRGOs in distilled water were drop-cast onto an interdigitated electrode. Also tetrafluorohydroquinone (TFQ) was used as a second coating layer for improving sensor selectivity and sensitivity. LCR-Meter device is used for measurement of resistance changes. The sensor showed a linear dynamic range of 2-4.5 mg/L with a detection limit 0.3 mg/L for DMMP determination. Also the RSD to evaluate the repeatability of sensor for 4 replicate measurements was 1%.
Najafi, M. (2016). Sensing Properties Investigation of Graphene Oxide Reduced by Various Agents for Detection of DMMP. Journal of Advanced Defense Science & Technology, 7(4), 269-276.
MLA
Mostafa Najafi. "Sensing Properties Investigation of Graphene Oxide Reduced by Various Agents for Detection of DMMP", Journal of Advanced Defense Science & Technology, 7, 4, 2016, 269-276.
HARVARD
Najafi, M. (2016). 'Sensing Properties Investigation of Graphene Oxide Reduced by Various Agents for Detection of DMMP', Journal of Advanced Defense Science & Technology, 7(4), pp. 269-276.
VANCOUVER
Najafi, M. Sensing Properties Investigation of Graphene Oxide Reduced by Various Agents for Detection of DMMP. Journal of Advanced Defense Science & Technology, 2016; 7(4): 269-276.
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