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In this study,a novel layer-by-layer polyaniline/graphene(PANi/Gr)structure for electrochemical detection of atrazine was developed.Gr film was synthesized by thermal chemical vapor deposition(CVD)method and transferred onto the PANi-predeposited microelectrode.The properties of PANi/Gr film were thoroughly investigated by high-resolution transmission electron microscopy and Raman techniques.The most attractive feature of this system is a suitable microenvironment,which could provide an amplification of the conductive signal,thus may contribute to enhancing electron transfer and subsequently improve the sensitivity in electrochemical measurements.With low detection limit(～43×10~(-12)g/L),acceptable stability and good reproducibility,the proposed electrochemical immunosensor could be advantageously extended for multiplexed detection of other agents of environmental pollution.
In this study, a novel layer-by-layer polyaniline / graphene (PANi / Gr) structure for electrochemical detection of atrazine was developed. Grl film was synthesized by thermal chemical vapor deposition (CVD) method and transferred onto PANi-predeposited microelectrode. The properties of PANi / Gr film were thoroughly investigated by high-resolution transmission electron microscopy and Raman techniques. The most attractive feature of this system is a suitable microenvironment, which could provide an amplification of the conductive signal, thus may contribute to enhancing electron transfer and subsequently improve the sensitivity in electrochemical measurements. Low detection limit (~ 43 × 10 ~ (-12) g / L), acceptable stability and good reproducibility, the proposed electrochemical immunosensor could be be extended for multiplexed detection of other agents of environmental pollution.