Electro- and photocatalytic hydrogen generation in acetonitrile and aqueous solutions by a cobalt macrocyclic Schiff-base complex

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Author(s)

  • Chi-Fai Leung
  • Yong-Zhen Chen
  • Han-Qing Yu
  • Shek-Man Yiu
  • Tai-Chu Lau

Detail(s)

Original languageEnglish
Pages (from-to)11640-11645
Journal / PublicationInternational Journal of Hydrogen Energy
Volume36
Issue number18
Publication statusPublished - Sept 2011

Abstract

The cobalt(III) macrocyclic Schiff-base complex, [CoIII(CR)Cl] ClO4 (CR = 2,12-dimethyl-3,7,11,17-tetra-azabicyclo[11.3.1]- heptadeca-1(17),2,11,13,15-pentaene), is an active catalyst for the electrocatalytic proton reduction to generate dihydrogen in both acetonitrile and 100% aqueous solution (at -0.57 and -0.85 V vs SCE, respectively), using p-cyanoanilinium tetrafluoroborate and acetic acid as proton sources, respectively. Bulk electrolysis confirmed that dihydrogen is produced with >90% Faradaic yields and >50 TON in both solvents. [CoIII(CR) Cl2]ClO4 also catalyzes photo-driven (λ > 390 nm) hydrogen production in aqueous acetonitrile at TON of 180 (not optimized), using [IrIII(ppy)2(bpy)]PF6 as the photosensitizer, triethanolamine (TEOA) as the sacrificial donor and acetic acid as the proton source. © 2011, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.

Research Area(s)

  • Cobalt, Electrocatalyst, Hydrogen Generation, Photocatalyst

Citation Format(s)

Electro- and photocatalytic hydrogen generation in acetonitrile and aqueous solutions by a cobalt macrocyclic Schiff-base complex. / Leung, Chi-Fai; Chen, Yong-Zhen; Yu, Han-Qing et al.
In: International Journal of Hydrogen Energy, Vol. 36, No. 18, 09.2011, p. 11640-11645.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review