A tetranuclear nickel(II) complex for water oxidation

Meeting new challenges

Gouhar Azadi, Zahra Zand, Younes Mousazade, Robabeh Bagheri, Junfeng Cui, Zhenlun Song, Rahman Bikas, Krzysztof Wozniak, Suleyman Allakhverdiev, Mohammad Mahdi Najafpour

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Ni complexes are promising catalysts for water splitting. Herein, a tetranuclear nickel(II) complex with bis-[(E)-N′-(1-(pyridin-2-yl)ethylidene)]carbohydrazide (HL), was synthesized and characterized by spectroscopic methods and single crystal X-ray analysis. The complex is a tetranuclear complex and the ligands are coordinated to the metal ions in the mono-negative form, (L)- to form a tetranuclear [NiL]4 4+ unit. Each Ni(II) ion is six-coordinated by pyridine nitrogen, azomethine nitrogen and oxygen atoms of two perpendicular carbohydrazone ligands in the mer configuration. The complex was studied as a water-oxidizing catalyst. In the next step, the role of the Ni-based compound for water oxidation on the surface of fluorine doped tin oxide as one of the true catalysts was investigated by scanning transmission electron microscopy, scanning transmission electron microscopy, spectroelectrochemistry, and electrochemistry. The electrode after water oxidation by the complex was studied and a relation between the decomposition of the Ni complex and water-oxidation reaction was proposed. The experiments show that under water-oxidation condition in the presence of the complex, a Ni-based compound on the electrode is a candidate as a contributor to the observed catalysis.

Original languageEnglish
Pages (from-to)2857-2867
Number of pages11
JournalInternational Journal of Hydrogen Energy
Volume44
Issue number5
DOIs
Publication statusPublished - Jan 28 2019
Externally publishedYes

Fingerprint

Nickel
nickel
Oxidation
oxidation
water
Water
catalysts
Catalysts
Ligands
transmission electron microscopy
ligands
scanning electron microscopy
water splitting
electrodes
Spectroelectrochemistry
Transmission electron microscopy
Nitrogen
electrochemistry
Scanning electron microscopy
Electrodes

Keywords

  • Electrocatalysis
  • Nickel(II) complex
  • True catalyst
  • Water oxidation

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

Cite this

Azadi, G., Zand, Z., Mousazade, Y., Bagheri, R., Cui, J., Song, Z., ... Najafpour, M. M. (2019). A tetranuclear nickel(II) complex for water oxidation: Meeting new challenges. International Journal of Hydrogen Energy, 44(5), 2857-2867. https://doi.org/10.1016/j.ijhydene.2018.12.059

A tetranuclear nickel(II) complex for water oxidation : Meeting new challenges. / Azadi, Gouhar; Zand, Zahra; Mousazade, Younes; Bagheri, Robabeh; Cui, Junfeng; Song, Zhenlun; Bikas, Rahman; Wozniak, Krzysztof; Allakhverdiev, Suleyman; Najafpour, Mohammad Mahdi.

In: International Journal of Hydrogen Energy, Vol. 44, No. 5, 28.01.2019, p. 2857-2867.

Research output: Contribution to journalArticle

Azadi, G, Zand, Z, Mousazade, Y, Bagheri, R, Cui, J, Song, Z, Bikas, R, Wozniak, K, Allakhverdiev, S & Najafpour, MM 2019, 'A tetranuclear nickel(II) complex for water oxidation: Meeting new challenges', International Journal of Hydrogen Energy, vol. 44, no. 5, pp. 2857-2867. https://doi.org/10.1016/j.ijhydene.2018.12.059
Azadi, Gouhar ; Zand, Zahra ; Mousazade, Younes ; Bagheri, Robabeh ; Cui, Junfeng ; Song, Zhenlun ; Bikas, Rahman ; Wozniak, Krzysztof ; Allakhverdiev, Suleyman ; Najafpour, Mohammad Mahdi. / A tetranuclear nickel(II) complex for water oxidation : Meeting new challenges. In: International Journal of Hydrogen Energy. 2019 ; Vol. 44, No. 5. pp. 2857-2867.
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