کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4766784 | 1424108 | 2017 | 39 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Layer-by-Layer AuNPs-SiPy+/Prussian blue nanoparticles modified electrodes: characterization and electrocatalytic effects
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
This paper reports the electrocatalytic properties of layer by layer (LbL) films formed by gold nanoparticles stabilized in propylpyridinium silsesquioxane polymer (AuNPs-SiPy+) as polycation, and prussian blue nanoparticles (PB) as polyanion with synergistic effect in the H2O2 reduction. Under optimized synthesis conditions by factorial design, the TEM images of gold nanoparticles showed spherical shape with diameter ranging from 2 to 35Â nm. All modified electrodes with inorganic materials were explored by spectroscopy (UV-Vis and FTIR) and electrochemical techniques (Cyclic Voltammetry, Chronoamperometry and Electrochemical Impedance Spectroscopy). We demonstrated that the presence of gold nanoparticles greatly enhanced the electroactive properties of the multilayer films providing interesting electrochemical features and excellent sensitivity in the electrocatalytic reduction of hydrogen peroxide, compared to electrode containing only the silsesquioxane polymer as cationic polyelectrolyte.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 249, 20 September 2017, Pages 104-112
Journal: Electrochimica Acta - Volume 249, 20 September 2017, Pages 104-112
نویسندگان
Giselle Nathaly Calaça, Cristiane Andreia Erdmann, Ana LetÃcia Soares, Christiana Andrade Pessôa, Sergio Toshio Fujiwara, Jarem Raul Garcia, Marcio Vidotti, Karen Wohnrath,