Functionalized multi walled carbon nanotubes nano biocomposite film for the amperometric detection of L-cysteine.
The development of nano biocomposite film (f-MWCNTs-Au-GO(x)) for L-cysteine (LC) detection is proposed by using glassy carbon electrode (GCE). The proposed nano biocomposite film has been fabricated on ITO for scanning electron microscopy (SEM) and atomic force microscopy (AFM) analysis. Next, the f-MWCNTs-Au-GO(x) nano biocomposite film modified GCE's surface was examined by scanning electrochemical microscopy (SECM). The proposed nano biocomposite film has been successfully applied for the detection of LC using cyclic voltammetry (CV) and amperometry. The f-MWCNTs-Au-GO(x) film modified GCE exhibited a linear response for LC detection in the lower and higher concentrations ranges of 2 to 42 x 10(-6), 0.1 to 1.08 x 10(-3) mol L(-1). Also, the proposed nano biocomposite film possesses high sensitivity and good repeatability for LC detection.
Thiagarajan
Soundappan
S
Electroanalysis and Bioelectrochemistry Lab, Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No. 1, Section 3, Taipei 106, Taiwan, Republic of China.
Umasankar
Yogeswaran
Y
Chen
Shen-Ming
SM
D003545:Cysteine / Q000032:analysis*; D004563:Electrochemistry / Q000379:methods*; D004566:Electrodes; D018625:Microscopy, Atomic Force; D008855:Microscopy, Electron, Scanning; D037742:Nanotubes, Carbon; D015203:Reproducibility of Results
D037742:Nanotubes, Carbon; D003545:Cysteine