The shape effect of TiO2 in VOx/TiO2 catalysts for selective reduction of NO by NH3

Quanquan Shi; Yong Li; Yan Zhou; Shu Miao; Na Ta; Ensheng Zhan; Jingyue Liu; Wenjie Shen

doi:10.1039/c5ta02897c

The shape effect of TiO₂ in VO_x/TiO₂ catalysts for selective reduction of NO by NH₃

Quanquan Shi, Yong Li, Yan Zhou, Shu Miao, Na Ta, Ensheng Zhan, Jingyue Liu, Wenjie Shen

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

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Abstract

Anatase TiO₂ nanosheets exposing 74% of {001} facets and nanospindles exposing 81% of {101} facets were hydrothermally synthesized with the aid of F^- and CH₃COO^-, respectively. Upon vanadia loading at a monolayer amount level, the {001} facets on TiO₂ nanosheets favored the deposition of octahedral vanadia species, but the {101} facets on TiO₂ nanospindles resulted in the formation of tetrahedral vanadia species. The shape effect of TiO₂, in terms of its predominantly exposed crystal facets, on the catalytic performance of VO_x/TiO₂ samples for selective reduction of NO with NH₃ was examined. The octahedral vanadia species on TiO₂ nanosheets showed a significantly higher activity than the tetrahedral vanadia species on TiO₂ nanospindles.

Original language	English (US)
Pages (from-to)	14409-14415
Number of pages	7
Journal	Journal of Materials Chemistry A
Volume	3
Issue number	27
DOIs	https://doi.org/10.1039/c5ta02897c
State	Published - Jul 21 2015

ASJC Scopus subject areas

Chemistry(all)
Renewable Energy, Sustainability and the Environment
Materials Science(all)

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abstract = "Anatase TiO2 nanosheets exposing 74% of {001} facets and nanospindles exposing 81% of {101} facets were hydrothermally synthesized with the aid of F- and CH3COO-, respectively. Upon vanadia loading at a monolayer amount level, the {001} facets on TiO2 nanosheets favored the deposition of octahedral vanadia species, but the {101} facets on TiO2 nanospindles resulted in the formation of tetrahedral vanadia species. The shape effect of TiO2, in terms of its predominantly exposed crystal facets, on the catalytic performance of VOx/TiO2 samples for selective reduction of NO with NH3 was examined. The octahedral vanadia species on TiO2 nanosheets showed a significantly higher activity than the tetrahedral vanadia species on TiO2 nanospindles.",

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T1 - The shape effect of TiO2 in VOx/TiO2 catalysts for selective reduction of NO by NH3

AU - Shi, Quanquan

AU - Li, Yong

AU - Zhou, Yan

AU - Miao, Shu

AU - Ta, Na

AU - Zhan, Ensheng

AU - Liu, Jingyue

AU - Shen, Wenjie

PY - 2015/7/21

Y1 - 2015/7/21

N2 - Anatase TiO2 nanosheets exposing 74% of {001} facets and nanospindles exposing 81% of {101} facets were hydrothermally synthesized with the aid of F- and CH3COO-, respectively. Upon vanadia loading at a monolayer amount level, the {001} facets on TiO2 nanosheets favored the deposition of octahedral vanadia species, but the {101} facets on TiO2 nanospindles resulted in the formation of tetrahedral vanadia species. The shape effect of TiO2, in terms of its predominantly exposed crystal facets, on the catalytic performance of VOx/TiO2 samples for selective reduction of NO with NH3 was examined. The octahedral vanadia species on TiO2 nanosheets showed a significantly higher activity than the tetrahedral vanadia species on TiO2 nanospindles.

AB - Anatase TiO2 nanosheets exposing 74% of {001} facets and nanospindles exposing 81% of {101} facets were hydrothermally synthesized with the aid of F- and CH3COO-, respectively. Upon vanadia loading at a monolayer amount level, the {001} facets on TiO2 nanosheets favored the deposition of octahedral vanadia species, but the {101} facets on TiO2 nanospindles resulted in the formation of tetrahedral vanadia species. The shape effect of TiO2, in terms of its predominantly exposed crystal facets, on the catalytic performance of VOx/TiO2 samples for selective reduction of NO with NH3 was examined. The octahedral vanadia species on TiO2 nanosheets showed a significantly higher activity than the tetrahedral vanadia species on TiO2 nanospindles.

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The shape effect of TiO₂ in VO_x/TiO₂ catalysts for selective reduction of NO by NH₃

Abstract

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