In this work,the chitosan and N-doped graphene natively grown on hierarchical porous carbon（N-PC-G/CS） nanocomposite was obtained by ultrasonic method,as a novel sensor platform for determination of tartrazine（TT）...In this work,the chitosan and N-doped graphene natively grown on hierarchical porous carbon（N-PC-G/CS） nanocomposite was obtained by ultrasonic method,as a novel sensor platform for determination of tartrazine（TT）.The nanocomposite as prepared had well dispersivity in water and excellent conductivity.The N-PC-G/CS nanocomposite was characterized by scanning electron microscopy（SEM）,transmission electron microscopy（TEM）,nitrogen adsorption-desorption,fourier transform infrared（FTIR） and electrochemical impedance spectroscopy（EIS）.The application of N-PC-G/CS for determination of tartrazine（TT） was investigated by chronocoulometry（CC）,cyclic voltammetry（CV） and differential pulse voltammetry（DPV）.Under optimized conditions,the sensor displayed a sensitive response to TT within a wide concentration range of 0.05-15.0 μmol/L,the detection limits is 0.036 μmol/L（S/N = 3）.Furthermore,this nanocomposite could be efficiently applied for determination of TT in soft drink samples.展开更多
基金supported by the National Natural Science Foundation of China(Nos.21165016,21175108,21265018)the Science and Technology Support Projects of Gansu Province(Nos.1011GKCA025,090GKCA036,1208RJZM289)
文摘In this work,the chitosan and N-doped graphene natively grown on hierarchical porous carbon（N-PC-G/CS） nanocomposite was obtained by ultrasonic method,as a novel sensor platform for determination of tartrazine（TT）.The nanocomposite as prepared had well dispersivity in water and excellent conductivity.The N-PC-G/CS nanocomposite was characterized by scanning electron microscopy（SEM）,transmission electron microscopy（TEM）,nitrogen adsorption-desorption,fourier transform infrared（FTIR） and electrochemical impedance spectroscopy（EIS）.The application of N-PC-G/CS for determination of tartrazine（TT） was investigated by chronocoulometry（CC）,cyclic voltammetry（CV） and differential pulse voltammetry（DPV）.Under optimized conditions,the sensor displayed a sensitive response to TT within a wide concentration range of 0.05-15.0 μmol/L,the detection limits is 0.036 μmol/L（S/N = 3）.Furthermore,this nanocomposite could be efficiently applied for determination of TT in soft drink samples.
