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Electrocrystallization of silver nanoparticles from silver halides in polypyrrole evidenced by their SERS activity—thermodynamic and kinetic conditions
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نویسنده
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Kamil Wójcik ,Tomasz Czaja ,Roman Szostak ,Maria Grzeszczuk
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منبع
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journal of solid state electrochemistry - 2018 - دوره : 22 - شماره : 12 - صفحه:3933 -3945
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چکیده
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silver(i) halide particles embodied in polypyrrole matrices are synthesized and further processed electrochemically to get nanoparticles of silver with significant activity in the surface-enhanced raman spectroscopy (sers) of the rhodamine 6g test solute, which is considered as a clear evidence of ag nanocrystallization. the electrocrystallization of ag nanoparticles is analyzed using redox charges of composites determined from cyclic voltammograms recorded at various time scales and/or cycle numbers. pristine ppy/agx and modified ppy/agx/agnp composites are characterized using electrochemical impedance spectroscopy, scanning electron microscopy, and x-ray electron dispersive spectroscopy. the thermodynamic and kinetic conditions of the electrochemical modification of pristine polypyrrole–agx composites leading to the electrocrystallization of ag nanoparticles are discussed.
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کلیدواژه
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Polymer composite ,Silver(I) halides ,Silver nanoparticles ,SERS platform
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آدرس
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University of Wrocław, Poland, University of Wrocław, Poland, University of Wrocław, Poland, University of Wrocław, Poland
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Authors
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