A visible-light active TiO2 photocatalyst multilayered with WO3

Junjun Jia; Kenta Taniyama; Masaaki Imura; Toshimasa Kanai; Yuzo Shigesato

doi:10.1039/c7cp03291a

A visible-light active TiO₂ photocatalyst multilayered with WO₃

Junjun Jia, Kenta Taniyama, Masaaki Imura, Toshimasa Kanai^*, Yuzo Shigesato

^*Corresponding author for this work

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

22 Citations (Scopus)

Abstract

Sputter-deposited TiO₂ films with high visible-light photocatalytic activity were successfully realized by a hybrid TiO₂/Pt/WO₃ film structure with Pt nanoparticles uniformly distributed at the interface of the TiO₂ and WO₃ films. The TiO₂/Pt/WO₃ hybrid films enable the complete decomposition of CH₃CHO under visible-light irradiation. The water contact angle of the TiO₂/Pt/WO₃ hybrid films reaches below 5° under visible-light irradiation. Pt nanoparticles are considered to act as a cocatalyst to improve the electron-hole separation efficiency. We demonstrate that the photogenerated holes in WO₃ are transferred to the surface of the TiO₂ film with less hole-trapping and induce high visible-light photocatalytic activity and hydrophilic behavior, and the photogenerated electrons are accumulated in the Pt nanoparticles. The highly hydrophilic thin films with high visible-light photocatalytic activity can be applied to various indoor products possessing self-cleaning and antifogging properties.

Original language	English
Pages (from-to)	17342-17348
Number of pages	7
Journal	Physical Chemistry Chemical Physics
Volume	19
Issue number	26
DOIs	https://doi.org/10.1039/c7cp03291a
Publication status	Published - 2017
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy(all)
Physical and Theoretical Chemistry

Access to Document

10.1039/c7cp03291a

Cite this

@article{e2ee89a524584e9bb94b924397a97cda,

title = "A visible-light active TiO2 photocatalyst multilayered with WO3",

abstract = "Sputter-deposited TiO2 films with high visible-light photocatalytic activity were successfully realized by a hybrid TiO2/Pt/WO3 film structure with Pt nanoparticles uniformly distributed at the interface of the TiO2 and WO3 films. The TiO2/Pt/WO3 hybrid films enable the complete decomposition of CH3CHO under visible-light irradiation. The water contact angle of the TiO2/Pt/WO3 hybrid films reaches below 5° under visible-light irradiation. Pt nanoparticles are considered to act as a cocatalyst to improve the electron-hole separation efficiency. We demonstrate that the photogenerated holes in WO3 are transferred to the surface of the TiO2 film with less hole-trapping and induce high visible-light photocatalytic activity and hydrophilic behavior, and the photogenerated electrons are accumulated in the Pt nanoparticles. The highly hydrophilic thin films with high visible-light photocatalytic activity can be applied to various indoor products possessing self-cleaning and antifogging properties.",

author = "Junjun Jia and Kenta Taniyama and Masaaki Imura and Toshimasa Kanai and Yuzo Shigesato",

note = "Publisher Copyright: {\textcopyright} the Owner Societies.",

year = "2017",

doi = "10.1039/c7cp03291a",

language = "English",

volume = "19",

pages = "17342--17348",

journal = "Physical Chemistry Chemical Physics",

issn = "1463-9076",

publisher = "Royal Society of Chemistry",

number = "26",

}

TY - JOUR

T1 - A visible-light active TiO2 photocatalyst multilayered with WO3

AU - Jia, Junjun

AU - Taniyama, Kenta

AU - Imura, Masaaki

AU - Kanai, Toshimasa

AU - Shigesato, Yuzo

N1 - Publisher Copyright: © the Owner Societies.

PY - 2017

Y1 - 2017

N2 - Sputter-deposited TiO2 films with high visible-light photocatalytic activity were successfully realized by a hybrid TiO2/Pt/WO3 film structure with Pt nanoparticles uniformly distributed at the interface of the TiO2 and WO3 films. The TiO2/Pt/WO3 hybrid films enable the complete decomposition of CH3CHO under visible-light irradiation. The water contact angle of the TiO2/Pt/WO3 hybrid films reaches below 5° under visible-light irradiation. Pt nanoparticles are considered to act as a cocatalyst to improve the electron-hole separation efficiency. We demonstrate that the photogenerated holes in WO3 are transferred to the surface of the TiO2 film with less hole-trapping and induce high visible-light photocatalytic activity and hydrophilic behavior, and the photogenerated electrons are accumulated in the Pt nanoparticles. The highly hydrophilic thin films with high visible-light photocatalytic activity can be applied to various indoor products possessing self-cleaning and antifogging properties.

AB - Sputter-deposited TiO2 films with high visible-light photocatalytic activity were successfully realized by a hybrid TiO2/Pt/WO3 film structure with Pt nanoparticles uniformly distributed at the interface of the TiO2 and WO3 films. The TiO2/Pt/WO3 hybrid films enable the complete decomposition of CH3CHO under visible-light irradiation. The water contact angle of the TiO2/Pt/WO3 hybrid films reaches below 5° under visible-light irradiation. Pt nanoparticles are considered to act as a cocatalyst to improve the electron-hole separation efficiency. We demonstrate that the photogenerated holes in WO3 are transferred to the surface of the TiO2 film with less hole-trapping and induce high visible-light photocatalytic activity and hydrophilic behavior, and the photogenerated electrons are accumulated in the Pt nanoparticles. The highly hydrophilic thin films with high visible-light photocatalytic activity can be applied to various indoor products possessing self-cleaning and antifogging properties.

UR - http://www.scopus.com/inward/record.url?scp=85024490553&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85024490553&partnerID=8YFLogxK

U2 - 10.1039/c7cp03291a

DO - 10.1039/c7cp03291a

M3 - Article

C2 - 28649686

AN - SCOPUS:85024490553

SN - 1463-9076

VL - 19

SP - 17342

EP - 17348

JO - Physical Chemistry Chemical Physics

JF - Physical Chemistry Chemical Physics

IS - 26

ER -

A visible-light active TiO₂ photocatalyst multilayered with WO₃

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this