Factors Affecting the Photoelectrochemical Fixation of Carbon Dioxide with Semiconductor Colloids

BR Eggins; PKJ Robertson; EP Murphy; E Woods; John Thomas Sirr Irvine

doi:10.1016/S1010-6030(98)00356-6

Factors Affecting the Photoelectrochemical Fixation of Carbon Dioxide with Semiconductor Colloids

BR Eggins, PKJ Robertson, EP Murphy, E Woods, John Thomas Sirr Irvine

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

Abstract

Carbon dioxide was reduced photocatalytically using aqueous CdS or ZnS colloids containing tetramethylammonium chloride to give the dimeric and tetrameric products namely, oxalate, glyoxylate, glycolate and tartrate. A model is presented to explain the role of the tetramethylammonium ions. Studies were also performed using ZnO, SiC, BaTiO3 and Sr TiO3, which in the absence of tetramethylammonium ions produced formate and formaldehyde. The relative quantum efficiencies of the six semiconductors were related to their band gaps and conduction band potentials. The role and effectiveness of several 'hole acceptor' (electron donor) compounds in this process is shown to be related to their redox potentials. (C) 1998 Elsevier Science S.A. All rights reserved.

Original language	English
Pages (from-to)	31-40
Number of pages	10
Journal	Journal of Photochemistry and Photobiology A: Chemistry
Volume	118
Issue number	1
DOIs	https://doi.org/10.1016/S1010-6030(98)00356-6
Publication status	Published - 15 Oct 1998

Keywords

photochemical fixation
semiconductor colloids
tetramethylammonium ions
ELECTROCHEMICAL REDUCTION
GALLIUM-PHOSPHIDE
SOLAR-CELLS
PHOTOCATALYSIS
PHOTO
PHOTOREDUCTION
SULFIDE
MEDIA
ACIDS

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10.1016/S1010-6030(98)00356-6

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title = "Factors Affecting the Photoelectrochemical Fixation of Carbon Dioxide with Semiconductor Colloids",

abstract = "Carbon dioxide was reduced photocatalytically using aqueous CdS or ZnS colloids containing tetramethylammonium chloride to give the dimeric and tetrameric products namely, oxalate, glyoxylate, glycolate and tartrate. A model is presented to explain the role of the tetramethylammonium ions. Studies were also performed using ZnO, SiC, BaTiO3 and Sr TiO3, which in the absence of tetramethylammonium ions produced formate and formaldehyde. The relative quantum efficiencies of the six semiconductors were related to their band gaps and conduction band potentials. The role and effectiveness of several 'hole acceptor' (electron donor) compounds in this process is shown to be related to their redox potentials. (C) 1998 Elsevier Science S.A. All rights reserved.",

keywords = "photochemical fixation, semiconductor colloids, tetramethylammonium ions, ELECTROCHEMICAL REDUCTION, GALLIUM-PHOSPHIDE, SOLAR-CELLS, PHOTOCATALYSIS, PHOTO, PHOTOREDUCTION, SULFIDE, MEDIA, ACIDS",

author = "BR Eggins and PKJ Robertson and EP Murphy and E Woods and Irvine, {John Thomas Sirr}",

year = "1998",

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doi = "10.1016/S1010-6030(98)00356-6",

language = "English",

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AU - Eggins, BR

AU - Robertson, PKJ

AU - Murphy, EP

AU - Woods, E

AU - Irvine, John Thomas Sirr

PY - 1998/10/15

Y1 - 1998/10/15

N2 - Carbon dioxide was reduced photocatalytically using aqueous CdS or ZnS colloids containing tetramethylammonium chloride to give the dimeric and tetrameric products namely, oxalate, glyoxylate, glycolate and tartrate. A model is presented to explain the role of the tetramethylammonium ions. Studies were also performed using ZnO, SiC, BaTiO3 and Sr TiO3, which in the absence of tetramethylammonium ions produced formate and formaldehyde. The relative quantum efficiencies of the six semiconductors were related to their band gaps and conduction band potentials. The role and effectiveness of several 'hole acceptor' (electron donor) compounds in this process is shown to be related to their redox potentials. (C) 1998 Elsevier Science S.A. All rights reserved.

AB - Carbon dioxide was reduced photocatalytically using aqueous CdS or ZnS colloids containing tetramethylammonium chloride to give the dimeric and tetrameric products namely, oxalate, glyoxylate, glycolate and tartrate. A model is presented to explain the role of the tetramethylammonium ions. Studies were also performed using ZnO, SiC, BaTiO3 and Sr TiO3, which in the absence of tetramethylammonium ions produced formate and formaldehyde. The relative quantum efficiencies of the six semiconductors were related to their band gaps and conduction band potentials. The role and effectiveness of several 'hole acceptor' (electron donor) compounds in this process is shown to be related to their redox potentials. (C) 1998 Elsevier Science S.A. All rights reserved.

KW - photochemical fixation

KW - semiconductor colloids

KW - tetramethylammonium ions

KW - ELECTROCHEMICAL REDUCTION

KW - GALLIUM-PHOSPHIDE

KW - SOLAR-CELLS

KW - PHOTOCATALYSIS

KW - PHOTO

KW - PHOTOREDUCTION

KW - SULFIDE

KW - MEDIA

KW - ACIDS

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DO - 10.1016/S1010-6030(98)00356-6

M3 - Article

SN - 1010-6030

VL - 118

SP - 31

EP - 40

JO - Journal of Photochemistry and Photobiology A: Chemistry

JF - Journal of Photochemistry and Photobiology A: Chemistry

IS - 1

ER -

Factors Affecting the Photoelectrochemical Fixation of Carbon Dioxide with Semiconductor Colloids

Abstract

Keywords

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