Formation of needle-like and honeycomb-like magnesium oxide/hydroxide structures by electrodeposition from magnesium nitrate melts
Samo za registrovane korisnike
2018
Autori
Cvetković, Vesna S.Vukićević, Nataša
Nikolić, Nebojša D.
Branković, Goran
Barudžija, Tanja S.
Jovićević, Jovan N.
Članak u časopisu (Objavljena verzija)
Metapodaci
Prikaz svih podataka o dokumentuApstrakt
The processes of electrochemical deposition of magnesium oxide/hydroxide on glassy carbon (GC) electrode from magnesium nitrate hexahydrate melt have been investigated. A novel procedure predicting a possibility of direct formation of magnesium oxide during electrodeposition from the nitrate melt used is reported. XRD analysis of the obtained deposits showed the formation of magnesium oxide along with magnesium hydroxide. The electrodeposition of magnesium oxide/hydroxide commences in magnesium underpotential (UPD) and continues through the magnesium overpotential (OPD) region. Network of individual or intertwined very thin needles as well as those grouped in flower-like aggregates or honeycomb-like structures were formed in both magnesium UPD and OPD regions. Formation of the long needles was explained through theories of mechanisms of dendrite formation. Hydrogen evolution commences in the magnesium OPD region and increases with the applied overpotential. Holes observed in the deposi...t originated from the detached hydrogen bubbles. The number, shape and size of the hole strongly depended on both the applied cathodic potential and the hold time of electrodeposition. Magnesium oxides/hydroxides syntheses taking part simultaneously at various applied potentials are a result of reactions between magnesium cations and products of water and nitrate anions reduction processes. Chemical reactions responsible for direct formation of magnesium oxide observed are those of magnesium ions and oxygen ions, formed by nitrate reduction taking part in the close vicinity of the working electrode.
Ključne reči:
Electrodeposition / Melt / Magnesium oxide/hydroxide / Honeycomb / NeedlesIzvor:
Electrochimica Acta, 2018, 268, 494-502Izdavač:
- Oxford : Pergamon-Elsevier Science Ltd
Finansiranje / projekti:
- Elektrohemijska sinteza i karakterizacija nanostrukturiranih funkcionalnih materijala za primenu u novim tehnologijama (RS-172046)
- Nov pristup dizajniranju materijala za konverziju i skladištenje energije (RS-172060)
Napomena:
- The peer-reviewed version: https://cer.ihtm.bg.ac.rs/handle/123456789/4282
DOI: 10.1016/j.electacta.2018.02.121
ISSN: 0013-4686
WoS: 000427657600054
Scopus: 2-s2.0-85042638607
Institucija/grupa
IHTMTY - JOUR AU - Cvetković, Vesna S. AU - Vukićević, Nataša AU - Nikolić, Nebojša D. AU - Branković, Goran AU - Barudžija, Tanja S. AU - Jovićević, Jovan N. PY - 2018 UR - https://cer.ihtm.bg.ac.rs/handle/123456789/2341 AB - The processes of electrochemical deposition of magnesium oxide/hydroxide on glassy carbon (GC) electrode from magnesium nitrate hexahydrate melt have been investigated. A novel procedure predicting a possibility of direct formation of magnesium oxide during electrodeposition from the nitrate melt used is reported. XRD analysis of the obtained deposits showed the formation of magnesium oxide along with magnesium hydroxide. The electrodeposition of magnesium oxide/hydroxide commences in magnesium underpotential (UPD) and continues through the magnesium overpotential (OPD) region. Network of individual or intertwined very thin needles as well as those grouped in flower-like aggregates or honeycomb-like structures were formed in both magnesium UPD and OPD regions. Formation of the long needles was explained through theories of mechanisms of dendrite formation. Hydrogen evolution commences in the magnesium OPD region and increases with the applied overpotential. Holes observed in the deposit originated from the detached hydrogen bubbles. The number, shape and size of the hole strongly depended on both the applied cathodic potential and the hold time of electrodeposition. Magnesium oxides/hydroxides syntheses taking part simultaneously at various applied potentials are a result of reactions between magnesium cations and products of water and nitrate anions reduction processes. Chemical reactions responsible for direct formation of magnesium oxide observed are those of magnesium ions and oxygen ions, formed by nitrate reduction taking part in the close vicinity of the working electrode. PB - Oxford : Pergamon-Elsevier Science Ltd T2 - Electrochimica Acta T1 - Formation of needle-like and honeycomb-like magnesium oxide/hydroxide structures by electrodeposition from magnesium nitrate melts VL - 268 SP - 494 EP - 502 DO - 10.1016/j.electacta.2018.02.121 ER -
@article{ author = "Cvetković, Vesna S. and Vukićević, Nataša and Nikolić, Nebojša D. and Branković, Goran and Barudžija, Tanja S. and Jovićević, Jovan N.", year = "2018", abstract = "The processes of electrochemical deposition of magnesium oxide/hydroxide on glassy carbon (GC) electrode from magnesium nitrate hexahydrate melt have been investigated. A novel procedure predicting a possibility of direct formation of magnesium oxide during electrodeposition from the nitrate melt used is reported. XRD analysis of the obtained deposits showed the formation of magnesium oxide along with magnesium hydroxide. The electrodeposition of magnesium oxide/hydroxide commences in magnesium underpotential (UPD) and continues through the magnesium overpotential (OPD) region. Network of individual or intertwined very thin needles as well as those grouped in flower-like aggregates or honeycomb-like structures were formed in both magnesium UPD and OPD regions. Formation of the long needles was explained through theories of mechanisms of dendrite formation. Hydrogen evolution commences in the magnesium OPD region and increases with the applied overpotential. Holes observed in the deposit originated from the detached hydrogen bubbles. The number, shape and size of the hole strongly depended on both the applied cathodic potential and the hold time of electrodeposition. Magnesium oxides/hydroxides syntheses taking part simultaneously at various applied potentials are a result of reactions between magnesium cations and products of water and nitrate anions reduction processes. Chemical reactions responsible for direct formation of magnesium oxide observed are those of magnesium ions and oxygen ions, formed by nitrate reduction taking part in the close vicinity of the working electrode.", publisher = "Oxford : Pergamon-Elsevier Science Ltd", journal = "Electrochimica Acta", title = "Formation of needle-like and honeycomb-like magnesium oxide/hydroxide structures by electrodeposition from magnesium nitrate melts", volume = "268", pages = "494-502", doi = "10.1016/j.electacta.2018.02.121" }
Cvetković, V. S., Vukićević, N., Nikolić, N. D., Branković, G., Barudžija, T. S.,& Jovićević, J. N.. (2018). Formation of needle-like and honeycomb-like magnesium oxide/hydroxide structures by electrodeposition from magnesium nitrate melts. in Electrochimica Acta Oxford : Pergamon-Elsevier Science Ltd., 268, 494-502. https://doi.org/10.1016/j.electacta.2018.02.121
Cvetković VS, Vukićević N, Nikolić ND, Branković G, Barudžija TS, Jovićević JN. Formation of needle-like and honeycomb-like magnesium oxide/hydroxide structures by electrodeposition from magnesium nitrate melts. in Electrochimica Acta. 2018;268:494-502. doi:10.1016/j.electacta.2018.02.121 .
Cvetković, Vesna S., Vukićević, Nataša, Nikolić, Nebojša D., Branković, Goran, Barudžija, Tanja S., Jovićević, Jovan N., "Formation of needle-like and honeycomb-like magnesium oxide/hydroxide structures by electrodeposition from magnesium nitrate melts" in Electrochimica Acta, 268 (2018):494-502, https://doi.org/10.1016/j.electacta.2018.02.121 . .