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)

Bibliographische Detailangaben
Parent link:	Key Engineering Materials: Scientific Journal Vol. 712 : Advanced Materials for Technical and Medical Purpose (AMTMP 2016).— 2016.— [P. 117-122]
1. Verfasser:	Perevezentseva D. O. Dariya Olegovna
Körperschaften:	Национальный исследовательский Томский политехнический университет (ТПУ) Институт физики высоких технологий (ИФВТ) Кафедра общей химии и химической технологии (ОХХТ), Национальный исследовательский Томский политехнический университет (ТПУ) Институт природных ресурсов (ИПР) Кафедра геологии и разведки полезных ископаемых (ГРПИ) Лаборатория геологии золота (ЛГЗ)
Weitere Verfasser:	Gorchakov E. V. Eduard, Oskina Yu. A. Yuliya Aleksandrovna
Zusammenfassung:	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
Sprache:	Englisch
Veröffentlicht:	2016
Schriftenreihe:	Electrophysical and Electrochemical Methods and Technologies of Materials Treatment
Schlagworte:	электронный ресурс труды учёных ТПУ микрофазы нанофазы поверхности графитовые электроды щелочные среды оксид серебра серебро
Online-Zugang:	http://dx.doi.org/10.4028/www.scientific.net/KEM.712.117
Format:	Elektronisch Buchkapitel
KOHA link:	https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=651270