Enhanced visible-light photocatalytic activity in K0.81Ti1.73Li0.27O4/TiO2-xNy sandwich-like composite

Peilin Zhang; Xiangwen Liu; Shu Yin; Tsugio Sato

doi:10.1016/j.apcatb.2009.10.003

Enhanced visible-light photocatalytic activity in K_0.81Ti_1.73Li_0.27O₄/TiO_2-xN_y sandwich-like composite

Peilin Zhang, Xiangwen Liu, Shu Yin, Tsugio Sato

Division of Inorganic Material Research

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

21 Citations (Scopus)

Abstract

A lepidocrocite-type tianate, K_0.81Ti_1.73Li_0.27O₄, was coupled with TiO_2-xN_y by a hydrothermal method in order to give the visible-light responsiveness. After treating K_0.81Ti_1.73Li_0.27O₄ in a HCl aqueous solution to peel off and/or split the titanate plates, nano-sized nitrogen doped titania particles were added to form a sandwich-like bridging structure possessing high specific surface area and porosity. The prepared K_0.81Ti_1.73Li_0.27O₄/TiO_2-xN_y sandwich-like composite showed excellent photocatalytic activity for the decomposition of NO_x gas under both visible-light and UV light irradiation (λ > 510, 400, 290 nm), being superior to that of TiO_2-xN_y or commercial TiO₂ (AEROXIDE^® TiO₂ P 25) powders.

Original language	English
Pages (from-to)	299-303
Number of pages	5
Journal	Applied Catalysis B: Environmental
Volume	93
Issue number	3-4
DOIs	https://doi.org/10.1016/j.apcatb.2009.10.003
Publication status	Published - 2010 Jan 12

Keywords

Coupled catalyst
DeNO
Nitrogen doped titania
Photocatalyst
Titanate

ASJC Scopus subject areas

Catalysis
Environmental Science(all)
Process Chemistry and Technology

Access to Document

10.1016/j.apcatb.2009.10.003

Cite this

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title = "Enhanced visible-light photocatalytic activity in K0.81Ti1.73Li0.27O4/TiO2-xNy sandwich-like composite",

abstract = "A lepidocrocite-type tianate, K0.81Ti1.73Li0.27O4, was coupled with TiO2-xNy by a hydrothermal method in order to give the visible-light responsiveness. After treating K0.81Ti1.73Li0.27O4 in a HCl aqueous solution to peel off and/or split the titanate plates, nano-sized nitrogen doped titania particles were added to form a sandwich-like bridging structure possessing high specific surface area and porosity. The prepared K0.81Ti1.73Li0.27O4/TiO2-xNy sandwich-like composite showed excellent photocatalytic activity for the decomposition of NOx gas under both visible-light and UV light irradiation (λ > 510, 400, 290 nm), being superior to that of TiO2-xNy or commercial TiO2 (AEROXIDE{\textregistered} TiO2 P 25) powders.",

keywords = "Coupled catalyst, DeNO, Nitrogen doped titania, Photocatalyst, Titanate",

author = "Peilin Zhang and Xiangwen Liu and Shu Yin and Tsugio Sato",

note = "Funding Information: This research was partially supported by the Grant-in-Aid for JSPS Fellows (20007574), the Ministry of Education, Culture, Sports, Science and Technology, “Special Education and Research Expenses, Post-Silicon Materials and Devices Research Alliance”.",

year = "2010",

month = jan,

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doi = "10.1016/j.apcatb.2009.10.003",

language = "English",

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journal = "Applied Catalysis B: Environmental",

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T1 - Enhanced visible-light photocatalytic activity in K0.81Ti1.73Li0.27O4/TiO2-xNy sandwich-like composite

AU - Zhang, Peilin

AU - Liu, Xiangwen

AU - Yin, Shu

AU - Sato, Tsugio

N1 - Funding Information: This research was partially supported by the Grant-in-Aid for JSPS Fellows (20007574), the Ministry of Education, Culture, Sports, Science and Technology, “Special Education and Research Expenses, Post-Silicon Materials and Devices Research Alliance”.

PY - 2010/1/12

Y1 - 2010/1/12

N2 - A lepidocrocite-type tianate, K0.81Ti1.73Li0.27O4, was coupled with TiO2-xNy by a hydrothermal method in order to give the visible-light responsiveness. After treating K0.81Ti1.73Li0.27O4 in a HCl aqueous solution to peel off and/or split the titanate plates, nano-sized nitrogen doped titania particles were added to form a sandwich-like bridging structure possessing high specific surface area and porosity. The prepared K0.81Ti1.73Li0.27O4/TiO2-xNy sandwich-like composite showed excellent photocatalytic activity for the decomposition of NOx gas under both visible-light and UV light irradiation (λ > 510, 400, 290 nm), being superior to that of TiO2-xNy or commercial TiO2 (AEROXIDE® TiO2 P 25) powders.

AB - A lepidocrocite-type tianate, K0.81Ti1.73Li0.27O4, was coupled with TiO2-xNy by a hydrothermal method in order to give the visible-light responsiveness. After treating K0.81Ti1.73Li0.27O4 in a HCl aqueous solution to peel off and/or split the titanate plates, nano-sized nitrogen doped titania particles were added to form a sandwich-like bridging structure possessing high specific surface area and porosity. The prepared K0.81Ti1.73Li0.27O4/TiO2-xNy sandwich-like composite showed excellent photocatalytic activity for the decomposition of NOx gas under both visible-light and UV light irradiation (λ > 510, 400, 290 nm), being superior to that of TiO2-xNy or commercial TiO2 (AEROXIDE® TiO2 P 25) powders.

KW - Coupled catalyst

KW - DeNO

KW - Nitrogen doped titania

KW - Photocatalyst

KW - Titanate

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