Enhancing Catalytic Activity by Narrowing Local Energy Gaps - X-Ray Studies of a Manganese Water Oxidation Catalyst

Jie Xiao; Munirah Khan; Archana Singh; Edlira Suljoti; Leone Spiccia; Emad F. Aziz

doi:10.1002/cssc.201403219

Enhancing Catalytic Activity by Narrowing Local Energy Gaps - X-Ray Studies of a Manganese Water Oxidation Catalyst

Jie Xiao, Munirah Khan, Archana Singh, Edlira Suljoti, Leone Spiccia, Emad F. Aziz

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

7 Scopus citations

Abstract

Changes in the local electronic structure of the Mn3d orbitals of a Mn catalyst derived from a dinuclear Mn^III complex during the water oxidation cycle were investigated ex situ by X-ray absorption spectroscopy (XAS) and resonant inelastic X-ray scattering (RIXS) analyses. Detailed information about the Mn3d orbitals, especially the local HOMO-LUMO gap on Mn sites revealed by RIXS analyses, indicated that the enhancement in catalytic activity (water oxidation) originated from the narrowing of the local HOMO-LUMO gap when electrical voltage and visible light illumination were applied simultaneously to the Mn catalytic system.

Original language	English
Pages (from-to)	872-877
Number of pages	6
Journal	ChemSusChem
Volume	8
Issue number	5
DOIs	https://doi.org/10.1002/cssc.201403219
State	Published - Mar 2015
Externally published	Yes

Keywords

charge transfer
electrochemistry
manganese
water chemistry
x-ray absorption spectroscopy

Access to Document

10.1002/cssc.201403219

Cite this

@article{a936172d85ba49af904688467480cb89,

title = "Enhancing Catalytic Activity by Narrowing Local Energy Gaps - X-Ray Studies of a Manganese Water Oxidation Catalyst",

abstract = "Changes in the local electronic structure of the Mn3d orbitals of a Mn catalyst derived from a dinuclear MnIII complex during the water oxidation cycle were investigated ex situ by X-ray absorption spectroscopy (XAS) and resonant inelastic X-ray scattering (RIXS) analyses. Detailed information about the Mn3d orbitals, especially the local HOMO-LUMO gap on Mn sites revealed by RIXS analyses, indicated that the enhancement in catalytic activity (water oxidation) originated from the narrowing of the local HOMO-LUMO gap when electrical voltage and visible light illumination were applied simultaneously to the Mn catalytic system.",

keywords = "charge transfer, electrochemistry, manganese, water chemistry, x-ray absorption spectroscopy",

author = "Jie Xiao and Munirah Khan and Archana Singh and Edlira Suljoti and Leone Spiccia and Aziz, {Emad F.}",

note = "Publisher Copyright: {\textcopyright} 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.",

year = "2015",

month = mar,

doi = "10.1002/cssc.201403219",

language = "English",

volume = "8",

pages = "872--877",

journal = "ChemSusChem",

issn = "1864-5631",

publisher = "Wiley-VCH Verlag",

number = "5",

}

TY - JOUR

T1 - Enhancing Catalytic Activity by Narrowing Local Energy Gaps - X-Ray Studies of a Manganese Water Oxidation Catalyst

AU - Xiao, Jie

AU - Khan, Munirah

AU - Singh, Archana

AU - Suljoti, Edlira

AU - Spiccia, Leone

AU - Aziz, Emad F.

PY - 2015/3

Y1 - 2015/3

N2 - Changes in the local electronic structure of the Mn3d orbitals of a Mn catalyst derived from a dinuclear MnIII complex during the water oxidation cycle were investigated ex situ by X-ray absorption spectroscopy (XAS) and resonant inelastic X-ray scattering (RIXS) analyses. Detailed information about the Mn3d orbitals, especially the local HOMO-LUMO gap on Mn sites revealed by RIXS analyses, indicated that the enhancement in catalytic activity (water oxidation) originated from the narrowing of the local HOMO-LUMO gap when electrical voltage and visible light illumination were applied simultaneously to the Mn catalytic system.

AB - Changes in the local electronic structure of the Mn3d orbitals of a Mn catalyst derived from a dinuclear MnIII complex during the water oxidation cycle were investigated ex situ by X-ray absorption spectroscopy (XAS) and resonant inelastic X-ray scattering (RIXS) analyses. Detailed information about the Mn3d orbitals, especially the local HOMO-LUMO gap on Mn sites revealed by RIXS analyses, indicated that the enhancement in catalytic activity (water oxidation) originated from the narrowing of the local HOMO-LUMO gap when electrical voltage and visible light illumination were applied simultaneously to the Mn catalytic system.

KW - charge transfer

KW - electrochemistry

KW - manganese

KW - water chemistry

KW - x-ray absorption spectroscopy

UR - http://www.scopus.com/inward/record.url?scp=84929995179&partnerID=8YFLogxK

U2 - 10.1002/cssc.201403219

DO - 10.1002/cssc.201403219

M3 - Article

C2 - 25605663

AN - SCOPUS:84929995179

SN - 1864-5631

VL - 8

SP - 872

EP - 877

JO - ChemSusChem

JF - ChemSusChem

IS - 5

ER -

Enhancing Catalytic Activity by Narrowing Local Energy Gaps - X-Ray Studies of a Manganese Water Oxidation Catalyst

Abstract

Keywords

Access to Document

Fingerprint

Cite this