Enhanced electrocatalytic hydrogen evolution reaction: Supramolecular assemblies of metalloporphyrins on glassy carbon electrodes

Camila Canales; Felipe Varas-Concha; Thomas E. Mallouk; Galo Ramírez

doi:10.1016/j.apcatb.2016.01.066

Enhanced electrocatalytic hydrogen evolution reaction: Supramolecular assemblies of metalloporphyrins on glassy carbon electrodes

Camila Canales, Felipe Varas-Concha, Thomas E. Mallouk^*, Galo Ramírez

^*Corresponding author for this work

University of Iceland

Research output: Contribution to journal › Article › peer-review

34 Citations (Scopus)

Abstract

Chemically modified electrodes formed by π-stacking of metalloporphyrins provide a stable and efficient electrocatalytic system for the hydrogen evolution reaction at pH 7.0. Metalloporphyrins M-OEP (M = Co(II), Cu(II), Zn(II), Ru(II), Fe(III) and Ni(II), OEP = 2,3,7,8,12,13,17,18-Octaethyl-21H,23H-porphine) were deposited on glassy carbon electrodes that had been previously modified by using NaOH and 4-aminopyridine, which served as a bridging molecule between the metalloporphyrins and the electrode surface. Different supramolecular architectures, as revealed by AFM and SEM, were obtained with bare and oxidized glassy carbon electrode surfaces. The most active systems were those obtained with Co(II) and Cu(II) porphyrins. Raman spectra showed the presence of the linking molecules and metalloporphyrins in the electrocatalytic metalloporphyrin films.

Original language	English
Pages (from-to)	169-176
Number of pages	8
Journal	Applied Catalysis B: Environmental
Volume	188
DOIs	https://doi.org/10.1016/j.apcatb.2016.01.066
Publication status	Published - 5 Jul 2016

Bibliographical note

Funding Information:
The authors would like to acknowledge the financial support provided by FONDECYT Project No.: 1120049 and No.: 1141199 , Doctoral Scholarship CONICYT Project No.: 21140095 and Project RC 130006 , CILIS.

Funding Information:
TEM acknowledges support from the Office of Basic Energy Sciences, Division of Chemical Sciences, Geosciences, and Energy Biosciences, Department of Energy under contract DE-FG02-07ER15911

Publisher Copyright:
© 2016 Elsevier B.V.

Other keywords

Glassy carbon electrodes
Graphene
Hydrogen evolution reaction
Metalloporphyrins
Supramolecular system

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10.1016/j.apcatb.2016.01.066

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title = "Enhanced electrocatalytic hydrogen evolution reaction: Supramolecular assemblies of metalloporphyrins on glassy carbon electrodes",

abstract = "Chemically modified electrodes formed by π-stacking of metalloporphyrins provide a stable and efficient electrocatalytic system for the hydrogen evolution reaction at pH 7.0. Metalloporphyrins M-OEP (M = Co(II), Cu(II), Zn(II), Ru(II), Fe(III) and Ni(II), OEP = 2,3,7,8,12,13,17,18-Octaethyl-21H,23H-porphine) were deposited on glassy carbon electrodes that had been previously modified by using NaOH and 4-aminopyridine, which served as a bridging molecule between the metalloporphyrins and the electrode surface. Different supramolecular architectures, as revealed by AFM and SEM, were obtained with bare and oxidized glassy carbon electrode surfaces. The most active systems were those obtained with Co(II) and Cu(II) porphyrins. Raman spectra showed the presence of the linking molecules and metalloporphyrins in the electrocatalytic metalloporphyrin films.",

keywords = "Glassy carbon electrodes, Graphene, Hydrogen evolution reaction, Metalloporphyrins, Supramolecular system",

author = "Camila Canales and Felipe Varas-Concha and Mallouk, {Thomas E.} and Galo Ram{\'i}rez",

note = "Funding Information: The authors would like to acknowledge the financial support provided by FONDECYT Project No.: 1120049 and No.: 1141199 , Doctoral Scholarship CONICYT Project No.: 21140095 and Project RC 130006 , CILIS. Funding Information: TEM acknowledges support from the Office of Basic Energy Sciences, Division of Chemical Sciences, Geosciences, and Energy Biosciences, Department of Energy under contract DE-FG02-07ER15911 Publisher Copyright: {\textcopyright} 2016 Elsevier B.V.",

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doi = "10.1016/j.apcatb.2016.01.066",

language = "English",

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journal = "Applied Catalysis B: Environmental",

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T1 - Enhanced electrocatalytic hydrogen evolution reaction

T2 - Supramolecular assemblies of metalloporphyrins on glassy carbon electrodes

AU - Canales, Camila

AU - Varas-Concha, Felipe

AU - Mallouk, Thomas E.

AU - Ramírez, Galo

N1 - Funding Information: The authors would like to acknowledge the financial support provided by FONDECYT Project No.: 1120049 and No.: 1141199 , Doctoral Scholarship CONICYT Project No.: 21140095 and Project RC 130006 , CILIS. Funding Information: TEM acknowledges support from the Office of Basic Energy Sciences, Division of Chemical Sciences, Geosciences, and Energy Biosciences, Department of Energy under contract DE-FG02-07ER15911 Publisher Copyright: © 2016 Elsevier B.V.

PY - 2016/7/5

Y1 - 2016/7/5

N2 - Chemically modified electrodes formed by π-stacking of metalloporphyrins provide a stable and efficient electrocatalytic system for the hydrogen evolution reaction at pH 7.0. Metalloporphyrins M-OEP (M = Co(II), Cu(II), Zn(II), Ru(II), Fe(III) and Ni(II), OEP = 2,3,7,8,12,13,17,18-Octaethyl-21H,23H-porphine) were deposited on glassy carbon electrodes that had been previously modified by using NaOH and 4-aminopyridine, which served as a bridging molecule between the metalloporphyrins and the electrode surface. Different supramolecular architectures, as revealed by AFM and SEM, were obtained with bare and oxidized glassy carbon electrode surfaces. The most active systems were those obtained with Co(II) and Cu(II) porphyrins. Raman spectra showed the presence of the linking molecules and metalloporphyrins in the electrocatalytic metalloporphyrin films.

AB - Chemically modified electrodes formed by π-stacking of metalloporphyrins provide a stable and efficient electrocatalytic system for the hydrogen evolution reaction at pH 7.0. Metalloporphyrins M-OEP (M = Co(II), Cu(II), Zn(II), Ru(II), Fe(III) and Ni(II), OEP = 2,3,7,8,12,13,17,18-Octaethyl-21H,23H-porphine) were deposited on glassy carbon electrodes that had been previously modified by using NaOH and 4-aminopyridine, which served as a bridging molecule between the metalloporphyrins and the electrode surface. Different supramolecular architectures, as revealed by AFM and SEM, were obtained with bare and oxidized glassy carbon electrode surfaces. The most active systems were those obtained with Co(II) and Cu(II) porphyrins. Raman spectra showed the presence of the linking molecules and metalloporphyrins in the electrocatalytic metalloporphyrin films.

KW - Glassy carbon electrodes

KW - Graphene

KW - Hydrogen evolution reaction

KW - Metalloporphyrins

KW - Supramolecular system

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ER -

Enhanced electrocatalytic hydrogen evolution reaction: Supramolecular assemblies of metalloporphyrins on glassy carbon electrodes

Abstract

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