One-Dimensional Copper(II) Coordination Polymer as an Electrocatalyst for Water Oxidation

Mishra R., UElker E., Karadas F.

CHEMELECTROCHEM, cilt.4, sa.1, ss.75-80, 2017 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 4 Sayı: 1
  • Basım Tarihi: 2017
  • Doi Numarası: 10.1002/celc.201600518
  • Dergi Adı: CHEMELECTROCHEM
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.75-80
  • Anahtar Kelimeler: copper paddle wheel, electrocatalysis, phosphine dioxide, water oxidation, X-ray diffraction, IRIDIUM OXIDE NANOPARTICLES, OXYGEN EVOLUTION REACTION, THIN-FILM, GAS-ADSORPTION, NEUTRAL PH, CATALYST, COMPLEX, LIGANDS, SURFACE, ACID
  • Recep Tayyip Erdoğan Üniversitesi Adresli: Evet

Özet

Although cobalt-based heterogeneous catalysts are the central focus in water oxidation research, interest in copper-based water oxidation catalysts has been growing thanks the great abundance of copper and its biological relevance. Several copper oxides have recently been reported to be active catalysts for water oxidation. In this study, a heterogeneous copper-based water oxidation catalyst that is not an oxide has been reported for the first time. Single-crystal XRD studies indicate that the compound is a one-dimensional coordination compound incorporating copper paddle-wheel units connected through phosphine dioxide ligands. The catalyst exhibits an onset potential of 372mV at pH10.2, whereas an overpotential of only 563mV is required to produce a current density of 1mAcm(-2). In addition to cyclic voltammetric and chronoamperometric studies, an investigation into the effect of pH on the catalytic activity and the robustness of the catalyst using long-term bulk electrolysis (12h) is presented.