Tin oxide-surface modified anatase titanium(iv) dioxide with enhanced UV-light photocatalytic activity

Musashi Fujishima; Qiliang Jin; Hironori Yamamoto; Hiroaki Tada; Michael Nolan

doi:10.1039/c1cp22708d

Tin oxide-surface modified anatase titanium(iv) dioxide with enhanced UV-light photocatalytic activity

Musashi Fujishima
, Qiliang Jin
, Hironori Yamamoto
, Hiroaki Tada
, Michael Nolan

Kindai University

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

Abstract

[Sn(acac)₂]Cl₂ is chemisorbed on the surfaces of anatase TiO₂via ion-exchange between the complex ions and H ⁺ released from the surface Ti-OH groups without liberation of the acetylacetonate ligand (Sn(acac)₂/TiO₂). The post-heating at 873 K in air forms tin oxide species on the TiO₂ surface in a highly dispersed state on a molecular scale ((SnO₂) _m/TiO₂). A low level of this p block metal oxide surface modification (∼0.007 Sn ions nm^-2) accelerates the UV-light-activities for the liquid- and gas-phase reactions, whereas in contrast to the surface modification with d block metal oxides such as FeO_x and NiO, no visible-light response is induced. Electrochemical measurements and first principles density functional theory (DFT) calculations for (SnO ₂)_m/TiO₂ model clusters (m = 1, 2) indicate that the bulk (TiO₂)-to-surface interfacial electron transfer (BS-IET) enhances charge separation and the following electron transfer to O₂ to increase the photocatalytic activity.

Original language	English
Pages (from-to)	705-711
Number of pages	7
Journal	Physical Chemistry Chemical Physics
Volume	14
Issue number	2
DOIs	https://doi.org/10.1039/c1cp22708d
Publication status	Published - 14 Jan 2012

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10.1039/c1cp22708d

https://hdl.handle.net/10468/1646Licence: CC BY-NC-ND

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title = "Tin oxide-surface modified anatase titanium(iv) dioxide with enhanced UV-light photocatalytic activity",

abstract = "[Sn(acac)2]Cl2 is chemisorbed on the surfaces of anatase TiO2via ion-exchange between the complex ions and H + released from the surface Ti-OH groups without liberation of the acetylacetonate ligand (Sn(acac)2/TiO2). The post-heating at 873 K in air forms tin oxide species on the TiO2 surface in a highly dispersed state on a molecular scale ((SnO2) m/TiO2). A low level of this p block metal oxide surface modification (∼0.007 Sn ions nm-2) accelerates the UV-light-activities for the liquid- and gas-phase reactions, whereas in contrast to the surface modification with d block metal oxides such as FeOx and NiO, no visible-light response is induced. Electrochemical measurements and first principles density functional theory (DFT) calculations for (SnO 2)m/TiO2 model clusters (m = 1, 2) indicate that the bulk (TiO2)-to-surface interfacial electron transfer (BS-IET) enhances charge separation and the following electron transfer to O2 to increase the photocatalytic activity.",

author = "Musashi Fujishima and Qiliang Jin and Hironori Yamamoto and Hiroaki Tada and Michael Nolan",

year = "2012",

month = jan,

day = "14",

doi = "10.1039/c1cp22708d",

language = "English",

volume = "14",

pages = "705--711",

journal = "Physical Chemistry Chemical Physics",

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publisher = "Royal Society of Chemistry",

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TY - JOUR

T1 - Tin oxide-surface modified anatase titanium(iv) dioxide with enhanced UV-light photocatalytic activity

AU - Fujishima, Musashi

AU - Jin, Qiliang

AU - Yamamoto, Hironori

AU - Tada, Hiroaki

AU - Nolan, Michael

PY - 2012/1/14

Y1 - 2012/1/14

N2 - [Sn(acac)2]Cl2 is chemisorbed on the surfaces of anatase TiO2via ion-exchange between the complex ions and H + released from the surface Ti-OH groups without liberation of the acetylacetonate ligand (Sn(acac)2/TiO2). The post-heating at 873 K in air forms tin oxide species on the TiO2 surface in a highly dispersed state on a molecular scale ((SnO2) m/TiO2). A low level of this p block metal oxide surface modification (∼0.007 Sn ions nm-2) accelerates the UV-light-activities for the liquid- and gas-phase reactions, whereas in contrast to the surface modification with d block metal oxides such as FeOx and NiO, no visible-light response is induced. Electrochemical measurements and first principles density functional theory (DFT) calculations for (SnO 2)m/TiO2 model clusters (m = 1, 2) indicate that the bulk (TiO2)-to-surface interfacial electron transfer (BS-IET) enhances charge separation and the following electron transfer to O2 to increase the photocatalytic activity.

AB - [Sn(acac)2]Cl2 is chemisorbed on the surfaces of anatase TiO2via ion-exchange between the complex ions and H + released from the surface Ti-OH groups without liberation of the acetylacetonate ligand (Sn(acac)2/TiO2). The post-heating at 873 K in air forms tin oxide species on the TiO2 surface in a highly dispersed state on a molecular scale ((SnO2) m/TiO2). A low level of this p block metal oxide surface modification (∼0.007 Sn ions nm-2) accelerates the UV-light-activities for the liquid- and gas-phase reactions, whereas in contrast to the surface modification with d block metal oxides such as FeOx and NiO, no visible-light response is induced. Electrochemical measurements and first principles density functional theory (DFT) calculations for (SnO 2)m/TiO2 model clusters (m = 1, 2) indicate that the bulk (TiO2)-to-surface interfacial electron transfer (BS-IET) enhances charge separation and the following electron transfer to O2 to increase the photocatalytic activity.

UR - https://www.scopus.com/pages/publications/83455237929

U2 - 10.1039/c1cp22708d

DO - 10.1039/c1cp22708d

M3 - Article

AN - SCOPUS:83455237929

SN - 1463-9076

VL - 14

SP - 705

EP - 711

JO - Physical Chemistry Chemical Physics

JF - Physical Chemistry Chemical Physics

IS - 2

ER -

Tin oxide-surface modified anatase titanium(iv) dioxide with enhanced UV-light photocatalytic activity

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