Electrolytic Behavior Silver Microphases and Nanophases on the Graphite Electrode Surface; Key Engineering Materials; Vol. 712 : Advanced Materials for Technical and Medical Purpose (AMTMP 2016)
| Parent link: | Key Engineering Materials: Scientific Journal Vol. 712 : Advanced Materials for Technical and Medical Purpose (AMTMP 2016).— 2016.— [P. 117-122] |
|---|---|
| Autor principal: | |
| Autor corporatiu: | , |
| Altres autors: | , |
| Sumari: | Title screen The stepwise mechanism of electrooxidation and reduction of silver nanophases and microphases is proposed on the graphite electrodes surface in alkaline medium. The electrochemical splitting of silver nanophases peak is observed on the anodic branch of the cyclic current-voltage curve. There is the shoulder at E=0.2 V on the he anodic branch of cyclic current-voltage curve. The appearance of additional cathodic wave at E=-0.08 V is observed on the cathodic branch of the cyclic current-voltage curve that is caused by the reduction of silver nanoparticles. The additional cathode maximum is represented at 0.3 V on the cathodic branch of the cylic current-voltage curves of only silver nanophases. This effect is associated the catalytic process of decomposition of hydrogen peroxide on silver nanoparticles surface. The offset of the cathodic maxima of current-voltage curves of silver nanophases obtained with an excess of a reducing agent are observed to more negative potentials. There is a significant decrease of the all currents maxima compared to silver nanophases obtained with an equal molar ratio of reactants. These results may be connected with the formation of silver oxide monolayers in the different oxidation in the presence of large amounts a reducing agent. The excess of the reducing agent required for the preparation of silver nanoparticles leads to decrease of the cathodic maximum of silver nanoparticles. Режим доступа: по договору с организацией-держателем ресурса |
| Idioma: | anglès |
| Publicat: |
2016
|
| Col·lecció: | Electrophysical and Electrochemical Methods and Technologies of Materials Treatment |
| Matèries: | |
| Accés en línia: | http://dx.doi.org/10.4028/www.scientific.net/KEM.712.117 |
| Format: | Electrònic Capítol de llibre |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=651270 |
MARC
| LEADER | 00000nla2a2200000 4500 | ||
|---|---|---|---|
| 001 | 651270 | ||
| 005 | 20240118154402.0 | ||
| 035 | |a (RuTPU)RU\TPU\network\16519 | ||
| 035 | |a RU\TPU\network\16513 | ||
| 090 | |a 651270 | ||
| 100 | |a 20161108a2016 k y0engy50 ba | ||
| 101 | 0 | |a eng | |
| 105 | |a y z 100zy | ||
| 135 | |a drgn ---uucaa | ||
| 181 | 0 | |a i | |
| 182 | 0 | |a b | |
| 200 | 1 | |a Electrolytic Behavior Silver Microphases and Nanophases on the Graphite Electrode Surface |f D. O. Perevezentseva, E. V. Gorchakov, Yu. A. Oskina | |
| 203 | |a Text |c electronic | ||
| 225 | 1 | |a Electrophysical and Electrochemical Methods and Technologies of Materials Treatment | |
| 300 | |a Title screen | ||
| 330 | |a The stepwise mechanism of electrooxidation and reduction of silver nanophases and microphases is proposed on the graphite electrodes surface in alkaline medium. The electrochemical splitting of silver nanophases peak is observed on the anodic branch of the cyclic current-voltage curve. There is the shoulder at E=0.2 V on the he anodic branch of cyclic current-voltage curve. The appearance of additional cathodic wave at E=-0.08 V is observed on the cathodic branch of the cyclic current-voltage curve that is caused by the reduction of silver nanoparticles. The additional cathode maximum is represented at 0.3 V on the cathodic branch of the cylic current-voltage curves of only silver nanophases. This effect is associated the catalytic process of decomposition of hydrogen peroxide on silver nanoparticles surface. The offset of the cathodic maxima of current-voltage curves of silver nanophases obtained with an excess of a reducing agent are observed to more negative potentials. There is a significant decrease of the all currents maxima compared to silver nanophases obtained with an equal molar ratio of reactants. These results may be connected with the formation of silver oxide monolayers in the different oxidation in the presence of large amounts a reducing agent. The excess of the reducing agent required for the preparation of silver nanoparticles leads to decrease of the cathodic maximum of silver nanoparticles. | ||
| 333 | |a Режим доступа: по договору с организацией-держателем ресурса | ||
| 461 | 0 | |0 (RuTPU)RU\TPU\network\11477 |t Key Engineering Materials |o Scientific Journal | |
| 463 | 0 | |0 (RuTPU)RU\TPU\network\16425 |t Vol. 712 : Advanced Materials for Technical and Medical Purpose (AMTMP 2016) |o The Workshop , February 15-17, 2016, Tomsk, Russia |o [proceedings] |f National Research Tomsk Polytechnic University (TPU) ; eds. G. E. Osokin [et al.] |v [P. 117-122] |d 2016 | |
| 610 | 1 | |a электронный ресурс | |
| 610 | 1 | |a труды учёных ТПУ | |
| 610 | 1 | |a микрофазы | |
| 610 | 1 | |a нанофазы | |
| 610 | 1 | |a поверхности | |
| 610 | 1 | |a графитовые электроды | |
| 610 | 1 | |a щелочные среды | |
| 610 | 1 | |a оксид серебра | |
| 610 | 1 | |a серебро | |
| 700 | 1 | |a Perevezentseva |b D. O. |c Chemist |c Associate Professor of Tomsk Polytechnic University, Candidate of chemical sciences |f 1979- |g Dariya Olegovna |3 (RuTPU)RU\TPU\pers\33799 |9 17397 | |
| 701 | 1 | |a Gorchakov |b E. V. |g Eduard | |
| 701 | 1 | |a Oskina |b Yu. A. |c Chemical Engineer |c Engineer-researcher of Tomsk Polytechnic University |f 1990- |g Yuliya Aleksandrovna |3 (RuTPU)RU\TPU\pers\33252 | |
| 712 | 0 | 2 | |a Национальный исследовательский Томский политехнический университет (ТПУ) |b Институт физики высоких технологий (ИФВТ) |b Кафедра общей химии и химической технологии (ОХХТ) |3 (RuTPU)RU\TPU\col\21253 |
| 712 | 0 | 2 | |a Национальный исследовательский Томский политехнический университет (ТПУ) |b Институт природных ресурсов (ИПР) |b Кафедра геологии и разведки полезных ископаемых (ГРПИ) |b Лаборатория геологии золота (ЛГЗ) |3 (RuTPU)RU\TPU\col\19128 |
| 801 | 2 | |a RU |b 63413507 |c 20170120 |g RCR | |
| 856 | 4 | |u http://dx.doi.org/10.4028/www.scientific.net/KEM.712.117 | |
| 942 | |c CF | ||