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자료유형
학술저널
저자정보
N. M. Naim (Universiti Kebangsaan Malaysia) H. Abdullah (Universiti Kebangsaan Malaysia) A. A. Hamid (Universiti Kebangsaan Malaysia)
저널정보
대한금속·재료학회 Electronic Materials Letters Electronic Materials Letters Vol.15 No.1
발행연도
2019.1
수록면
70 - 79 (10page)

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The use of Ag–Pd bimetallic nanoparticles was reported as an enhanced sensing material in electrochemical sensing application. The composite of bimetallic nanoparticles with conducting polymer has attracted an interest in microbial sensor. Ag–Pd bimetallic nanoparticles embedded in polyaniline (PANI) system was synthesized using sol–gel method and depositedon glass substrate by spin coating technique with various concentrations of Ag and Pd. The fi lms properties were studiedusing XRD, TEM and AFM to analyze the internal structure and surface morphology. Sensor performance was carried outusing current–voltage ( I – V ) measurement and electrochemical impedance spectroscopy (EIS) to monitor the presence ofEscherichia coli bacteria in liquid medium. From XRD analysis, the face-centered cubic of Ag–Pd bimetallic crystal werefound at lattice (1 1 1) and (2 0 0). The crystallite size and lattice parameter were found to be decrease as concentration ofPd increased. TEM analysis shows the particles of Ag–Pd bimetallic in spherical shape with 10–20 nm in diameter. AFManalysis show the surface roughness of PANI–Ag–Pd thin fi lms decrease as the concentration of Pd increased. From I – Vand EIS analysis, the prototype sensor of PANI–Ag–Pd nanocomposite thin fi lms performed well with high sensitivity whenPd concentration is increasing. Graphical

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