Photoreactivity of TSP: A novel microporous titanosilicate

Morag Murdoch; Rachel Yeates; Russell Francis Howe

doi:10.1016/j.micromeso.2006.10.029

Photoreactivity of TSP: A novel microporous titanosilicate

Morag Murdoch, Rachel Yeates, Russell Francis Howe

Chemistry

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

5 Citations (Scopus)

Abstract

The photoreactivity of TSP, a microporous titanosilicate with the pharmacosiderite structure consisting of nanoclusters of titania octahedra linked through silicate tetrahedra, has been studied by EPR spectroscopy. UV irradiation of TSP in the presence of O-2 produces the EPR signal of holes trapped at. oxide ion sites (O-). This is attributed to the scavenging of electrons by O-2. The trapped holes in TSP are much more stable than the corresponding species in TiO2. Reaction of O-2 with O- to form O-3(-) is also observed. Trapped holes can be seen as well when TSP is irradiated in the presence of adsorbed CO2, which can also act as an electron scavenger.

Original language	English
Pages (from-to)	184-190
Number of pages	7
Journal	Microporous and Mesoporous Materials
Volume	101
Issue number	1-2
Early online date	5 Dec 2006
DOIs	https://doi.org/10.1016/j.micromeso.2006.10.029
Publication status	Published - 19 Apr 2007

Keywords

pharmacosiderite
titanosilicate
EPR
hole trapping
photoreactivity
electron trapping
electron-paramagnetic-resonance
anatase TIO2 particles
ion-exchange
molecular-oxygen
magnesium-oxide
ETS-10
reactivity
surfaces

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10.1016/j.micromeso.2006.10.029

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@article{59256f89d82647baa4805101a7095412,

title = "Photoreactivity of TSP: A novel microporous titanosilicate",

abstract = "The photoreactivity of TSP, a microporous titanosilicate with the pharmacosiderite structure consisting of nanoclusters of titania octahedra linked through silicate tetrahedra, has been studied by EPR spectroscopy. UV irradiation of TSP in the presence of O-2 produces the EPR signal of holes trapped at. oxide ion sites (O-). This is attributed to the scavenging of electrons by O-2. The trapped holes in TSP are much more stable than the corresponding species in TiO2. Reaction of O-2 with O- to form O-3(-) is also observed. Trapped holes can be seen as well when TSP is irradiated in the presence of adsorbed CO2, which can also act as an electron scavenger.",

keywords = "pharmacosiderite, titanosilicate, EPR, hole trapping, photoreactivity, electron trapping, electron-paramagnetic-resonance, anatase TIO2 particles, ion-exchange, molecular-oxygen, magnesium-oxide, ETS-10, reactivity, surfaces",

author = "Morag Murdoch and Rachel Yeates and Howe, {Russell Francis}",

year = "2007",

month = apr,

day = "19",

doi = "10.1016/j.micromeso.2006.10.029",

language = "English",

volume = "101",

pages = "184--190",

journal = "Microporous and Mesoporous Materials",

issn = "1387-1811",

publisher = "Elsevier",

number = "1-2",

}

TY - JOUR

T1 - Photoreactivity of TSP

T2 - A novel microporous titanosilicate

AU - Murdoch, Morag

AU - Yeates, Rachel

AU - Howe, Russell Francis

PY - 2007/4/19

Y1 - 2007/4/19

N2 - The photoreactivity of TSP, a microporous titanosilicate with the pharmacosiderite structure consisting of nanoclusters of titania octahedra linked through silicate tetrahedra, has been studied by EPR spectroscopy. UV irradiation of TSP in the presence of O-2 produces the EPR signal of holes trapped at. oxide ion sites (O-). This is attributed to the scavenging of electrons by O-2. The trapped holes in TSP are much more stable than the corresponding species in TiO2. Reaction of O-2 with O- to form O-3(-) is also observed. Trapped holes can be seen as well when TSP is irradiated in the presence of adsorbed CO2, which can also act as an electron scavenger.

AB - The photoreactivity of TSP, a microporous titanosilicate with the pharmacosiderite structure consisting of nanoclusters of titania octahedra linked through silicate tetrahedra, has been studied by EPR spectroscopy. UV irradiation of TSP in the presence of O-2 produces the EPR signal of holes trapped at. oxide ion sites (O-). This is attributed to the scavenging of electrons by O-2. The trapped holes in TSP are much more stable than the corresponding species in TiO2. Reaction of O-2 with O- to form O-3(-) is also observed. Trapped holes can be seen as well when TSP is irradiated in the presence of adsorbed CO2, which can also act as an electron scavenger.

KW - pharmacosiderite

KW - titanosilicate

KW - EPR

KW - hole trapping

KW - photoreactivity

KW - electron trapping

KW - electron-paramagnetic-resonance

KW - anatase TIO2 particles

KW - ion-exchange

KW - molecular-oxygen

KW - magnesium-oxide

KW - ETS-10

KW - reactivity

KW - surfaces

U2 - 10.1016/j.micromeso.2006.10.029

DO - 10.1016/j.micromeso.2006.10.029

M3 - Article

SN - 1387-1811

VL - 101

SP - 184

EP - 190

JO - Microporous and Mesoporous Materials

JF - Microporous and Mesoporous Materials

IS - 1-2

ER -

Photoreactivity of TSP: A novel microporous titanosilicate

Abstract

Keywords

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