Enhancing catalytic activity by narrowing local energy gaps - X-ray studies of a manganese water oxidation catalyst

Jie Xiao; Munirah Khan; Archana Singh; Edllira Suljoti; Leone Spiccia; Emad 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, Edllira Suljoti, Leone Spiccia, Emad Aziz

School of Chemistry

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

7 Citations (Scopus)

Abstract

Changes in the local electronic structure of the Mn 3d 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 Mn 3d 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
Publication status	Published - 2015

Keywords

charge transfer
electrochemistry
manganese
water chemistry
x-ray absorption spectroscopy

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10.1002/cssc.201403219

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abstract = "Changes in the local electronic structure of the Mn 3d 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 Mn 3d 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 Edllira Suljoti and Leone Spiccia and Emad Aziz",

year = "2015",

doi = "10.1002/cssc.201403219",

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pages = "872--877",

journal = "ChemSusChem",

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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, Edllira

AU - Spiccia, Leone

AU - Aziz, Emad

PY - 2015

Y1 - 2015

N2 - Changes in the local electronic structure of the Mn 3d 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 Mn 3d 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 Mn 3d 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 Mn 3d 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://onlinelibrary.wiley.com.ezproxy.lib.monash.edu.au/doi/10.1002/cssc.201403219/epdf

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DO - 10.1002/cssc.201403219

M3 - Article

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

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Keywords

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ARC Centre of Excellence for Electromaterials Science

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Enhancing catalytic activity by narrowing local energy gaps - X-ray studies of a manganese water oxidation catalyst

Abstract

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ARC Centre of Excellence for Electromaterials Science

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