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

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

doi:10.1016/j.ijhydene.2011.06.062

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

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

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

62 Citations (Scopus)

Abstract

The cobalt(III) macrocyclic Schiff-base complex, [Co^III(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. [Co^III(CR) Cl₂]ClO₄ also catalyzes photo-driven (λ > 390 nm) hydrogen production in aqueous acetonitrile at TON of 180 (not optimized), using [Ir^III(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.

Original language	English
Pages (from-to)	11640-11645
Journal	International Journal of Hydrogen Energy
Volume	36
Issue number	18
DOIs	https://doi.org/10.1016/j.ijhydene.2011.06.062
Publication status	Published - Sept 2011

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This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Research Keywords

Cobalt
Electrocatalyst
Hydrogen Generation
Photocatalyst

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10.1016/j.ijhydene.2011.06.062

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@article{b77f95b493ea474289b321d884ce196a,

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

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. {\textcopyright} 2011, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.",

keywords = "Cobalt, Electrocatalyst, Hydrogen Generation, Photocatalyst",

author = "Chi-Fai Leung and Yong-Zhen Chen and Han-Qing Yu and Shek-Man Yiu and Chi-Chiu Ko and Tai-Chu Lau",

year = "2011",

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doi = "10.1016/j.ijhydene.2011.06.062",

language = "English",

volume = "36",

pages = "11640--11645",

journal = "International Journal of Hydrogen Energy",

issn = "0360-3199",

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}

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 Reviews › RGC 21 - Publication in refereed journal › peer-review

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

UR - https://www.scopus.com/pages/publications/80052168099

UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-80052168099&origin=recordpage

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 -

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

Abstract

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