TY - JOUR
T1 - Electro- and photocatalytic hydrogen generation in acetonitrile and aqueous solutions by a cobalt macrocyclic Schiff-base complex
AU - Leung, Chi-Fai
AU - Chen, Yong-Zhen
AU - Yu, Han-Qing
AU - Yiu, Shek-Man
AU - Ko, Chi-Chiu
AU - Lau, Tai-Chu
PY - 2011/9
Y1 - 2011/9
N2 - 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.
AB - 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.
KW - Cobalt
KW - Electrocatalyst
KW - Hydrogen Generation
KW - Photocatalyst
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U2 - 10.1016/j.ijhydene.2011.06.062
DO - 10.1016/j.ijhydene.2011.06.062
M3 - RGC 21 - Publication in refereed journal
SN - 0360-3199
VL - 36
SP - 11640
EP - 11645
JO - International Journal of Hydrogen Energy
JF - International Journal of Hydrogen Energy
IS - 18
ER -
