Journal
ELECTROCHIMICA ACTA
Volume 222, Issue -, Pages 1007-1012Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2016.11.069
Keywords
Gold nanocluster; one-phase method; ion selective electrode; solid contact transducer
Categories
Funding
- NSFC, China [21225524, 21375124, 21475122, 21405147, 21575136, 21505127, 21501169, 21527806]
- Jilin Province Youth Science Foundation [20150520012JH]
- Department of Science and Techniques of Jilin Province [20150203002YY, 20150201001GX, 20150204065GX]
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Gold nanoclusters are ideal materials as solid transducer in all-solid-state ion-selective electrodes (ISEs) due to their high hydrophobicity, excellent ion-to-electron transduction, high specific capacitance and outstanding chemical stability. In this paper, monolayer-protected gold nanoclusters (MPCs) were synthesized by a simple one-phase method requiring a relatively short reaction time with high yield (60%). Transmittance electronic microscopy (TEM) and atomic-force microscopy (AFM) were used to characterize the morphology of MPCs. The composition of MPCs was studied by UV-vis spectrometry, Matrix-assisted laser desorption ionization (MALDI) mass spectrometry, X-ray diffraction (XRD) measurement and X-ray photoelectron spectroscopy (XPS) measurements. The performance of MPCs based ISEs was thoroughly characterized by electrochemical impedance, electromotive force and chronopotentiometry measurement. Comparison with the performance of ISE with other signal transducing materials such as conductive polymer, carbon nanotube, graphene and fullerene, the MPCs based ISEs have higher potential st ability and reproducibility, lower detection limit, longer operating life (one year) and higher anti-interference ability. (C) 2016 Elsevier Ltd. All rights reserved.
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