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A novel selective H2S sensor using dodecylamine and ethylenediamine functionalized graphene oxide
M. Malek Alaie,M. Jahangiri,A.M. Rashidi,A. Haghighi Asl,N. Izadi 한국공업화학회 2015 Journal of Industrial and Engineering Chemistry Vol.29 No.-
Dodecylamine (DDA) and ethylenediamine (EDA) functionalized graphene oxide (GO) nanosensorswere synthesized by amidation methods and characterized by X-ray photoelectron spectroscopy (XPS),Fourier transform infrared spectroscopy (FTIR) and scanning electron microscope (SEM). The resultsshowed that compared to pristine GO-based sensor, the DDA-GO and EDA-GO chemiresistors have asignificant response to hydrogen sulfide (H2S) down to 50 ppm at room temperature. Furthermore,operating temperature effects, H2S concentration and GO suspension concentration on sensor responseare also investigated. Functionalized graphene oxide chemiresistors offer advantages such asremarkable potential for mass production due to their ease of manufacturing, significant selectivityand performance.