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Interactions between Vitamin C and Nanocolloidal Silver Particles Studied by Cyclic Voltammetry and UV‐Vis Spectrophotometry
Author(s) -
Samide Adriana,
Tutunaru Bogdan
Publication year - 2017
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.201700281
Subject(s) - silver nanoparticle , cyclic voltammetry , ascorbic acid , electrolysis , chemistry , spectrophotometry , reaction rate constant , vitamin c , nanoparticle , kinetics , nuclear chemistry , electrochemistry , inorganic chemistry , voltammetry , vitamin , materials science , nanotechnology , chromatography , electrode , biochemistry , physics , food science , quantum mechanics , electrolyte
The effect of silver nanoparticles on human health has been investigated and the controversial opinions about their use in a wide variety of commercial products were expressed. Their interactions with vitamins and salts constitute an important step to elucidate the possible improper transformations knowing that the silver nanoparticles could have the effect on cell viability. In this circumstance, in our study we investigated the electrochemical behavior of ascorbic acid, in NaCl blank solution and NaCl solution containing the silver nanoparticles using the cyclic voltammetry and current constant electrolysis associated to UV‐Vis spectrophotommetry. The presence of silver nanoparticles (nAg) leads to a more rapid electrodegradation of vitamin C (VitC) in solution of NaCl, the zero ‐order reaction kinetics being followed. The rate constant value of 0.78 u.A. min −1 was obtained compared to the value of 0.39 u.A. min −1 that was computed in the absence of nAg. The Vitamin C degradation mechanism was also proposed.