Improved thermochromic and photocatalytic activities of F–VO2/Nb–TiO2 multifunctional coating films

Anung Riapanitra; Yusuke Asakura; Shu Yin

doi:10.1007/s42864-020-00032-y

Improved thermochromic and photocatalytic activities of F–VO₂/Nb–TiO₂ multifunctional coating films

Anung Riapanitra, Yusuke Asakura, Shu Yin^*

^*Corresponding author for this work

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

10 Citations (Scopus)

Abstract

Multifunctional photocatalytic and thermochromic composites consisting of fluorine-doped vanadium dioxide (F–VO₂) and niobium-doped TiO₂ (NTO) were prepared by a simple physical mixing. The composites exhibited a higher thermochromic activity and nitrogen oxide (NO_x) decomposition activity than that of pristine VO₂/NTO. Both VO₂ and NTO materials were synthesized using an environmentally friendly soft chemical solvothermal/hydrothermal process, which produced NTO nanoparticles with a controllable morphology and particle size by changing the ratio of ethanol and acetic acid solvent. F–VO₂/NTO showed a better multifunctionality of thermochromic and photocatalytic activities than those of VO₂/NTO samples. The coexistence coating films showed a better effect on thermochromic and deNO_x (NO_x reduction) activity than those of double-sided films for F–VO₂/NTO samples. The best thermochromic and photocatalytic activities obtained from sample F–VO₂/NTO 60 showed the ΔT_{1500 nm} [difference of transmittance (ΔT) at the wavelength of 1500 nm under 25 °C and 95 °C] of up to 29.5% and deNO_x activity of up to 40% at λ > 290 nm under mercury lamp irradiation. The use of F–VO₂/NTO coexistence coating films showed the appropriateness for multifunctional materials.

Original language	English
Pages (from-to)	306-317
Number of pages	12
Journal	Tungsten
Volume	1
Issue number	4
DOIs	https://doi.org/10.1007/s42864-020-00032-y
Publication status	Published - 2019 Dec
Externally published	Yes

Keywords

Multifunctional coating
Nb-doped TiO
Photocatalytic NO decomposition
Thermochromic
VO(M)

ASJC Scopus subject areas

Materials Chemistry
Metals and Alloys
Surfaces, Coatings and Films
Materials Science (miscellaneous)

Access to Document

10.1007/s42864-020-00032-y

Cite this

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title = "Improved thermochromic and photocatalytic activities of F–VO2/Nb–TiO2 multifunctional coating films",

abstract = "Multifunctional photocatalytic and thermochromic composites consisting of fluorine-doped vanadium dioxide (F–VO2) and niobium-doped TiO2 (NTO) were prepared by a simple physical mixing. The composites exhibited a higher thermochromic activity and nitrogen oxide (NOx) decomposition activity than that of pristine VO2/NTO. Both VO2 and NTO materials were synthesized using an environmentally friendly soft chemical solvothermal/hydrothermal process, which produced NTO nanoparticles with a controllable morphology and particle size by changing the ratio of ethanol and acetic acid solvent. F–VO2/NTO showed a better multifunctionality of thermochromic and photocatalytic activities than those of VO2/NTO samples. The coexistence coating films showed a better effect on thermochromic and deNOx (NOx reduction) activity than those of double-sided films for F–VO2/NTO samples. The best thermochromic and photocatalytic activities obtained from sample F–VO2/NTO 60 showed the ΔT1500 nm [difference of transmittance (ΔT) at the wavelength of 1500 nm under 25 °C and 95 °C] of up to 29.5% and deNOx activity of up to 40% at λ > 290 nm under mercury lamp irradiation. The use of F–VO2/NTO coexistence coating films showed the appropriateness for multifunctional materials.",

keywords = "Multifunctional coating, Nb-doped TiO, Photocatalytic NO decomposition, Thermochromic, VO(M)",

author = "Anung Riapanitra and Yusuke Asakura and Shu Yin",

note = "Funding Information: This research was financially supported by the JSPS KAKENHI [Grant-in-Aid for Scientific Research on Innovative Areas “Mixed Anion” (Grant No. 16H06439)]; the Cooperative Research Program of “Network Joint Research Center for Materials and Devices”; and the Dynamic Alliance for Open Innovations Bridging Human, Environment, and Materials. Publisher Copyright: {\textcopyright} 2020, The Nonferrous Metals Society of China.",

year = "2019",

month = dec,

doi = "10.1007/s42864-020-00032-y",

language = "English",

volume = "1",

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T1 - Improved thermochromic and photocatalytic activities of F–VO2/Nb–TiO2 multifunctional coating films

AU - Riapanitra, Anung

AU - Asakura, Yusuke

AU - Yin, Shu

N1 - Funding Information: This research was financially supported by the JSPS KAKENHI [Grant-in-Aid for Scientific Research on Innovative Areas “Mixed Anion” (Grant No. 16H06439)]; the Cooperative Research Program of “Network Joint Research Center for Materials and Devices”; and the Dynamic Alliance for Open Innovations Bridging Human, Environment, and Materials. Publisher Copyright: © 2020, The Nonferrous Metals Society of China.

PY - 2019/12

Y1 - 2019/12

N2 - Multifunctional photocatalytic and thermochromic composites consisting of fluorine-doped vanadium dioxide (F–VO2) and niobium-doped TiO2 (NTO) were prepared by a simple physical mixing. The composites exhibited a higher thermochromic activity and nitrogen oxide (NOx) decomposition activity than that of pristine VO2/NTO. Both VO2 and NTO materials were synthesized using an environmentally friendly soft chemical solvothermal/hydrothermal process, which produced NTO nanoparticles with a controllable morphology and particle size by changing the ratio of ethanol and acetic acid solvent. F–VO2/NTO showed a better multifunctionality of thermochromic and photocatalytic activities than those of VO2/NTO samples. The coexistence coating films showed a better effect on thermochromic and deNOx (NOx reduction) activity than those of double-sided films for F–VO2/NTO samples. The best thermochromic and photocatalytic activities obtained from sample F–VO2/NTO 60 showed the ΔT1500 nm [difference of transmittance (ΔT) at the wavelength of 1500 nm under 25 °C and 95 °C] of up to 29.5% and deNOx activity of up to 40% at λ > 290 nm under mercury lamp irradiation. The use of F–VO2/NTO coexistence coating films showed the appropriateness for multifunctional materials.

AB - Multifunctional photocatalytic and thermochromic composites consisting of fluorine-doped vanadium dioxide (F–VO2) and niobium-doped TiO2 (NTO) were prepared by a simple physical mixing. The composites exhibited a higher thermochromic activity and nitrogen oxide (NOx) decomposition activity than that of pristine VO2/NTO. Both VO2 and NTO materials were synthesized using an environmentally friendly soft chemical solvothermal/hydrothermal process, which produced NTO nanoparticles with a controllable morphology and particle size by changing the ratio of ethanol and acetic acid solvent. F–VO2/NTO showed a better multifunctionality of thermochromic and photocatalytic activities than those of VO2/NTO samples. The coexistence coating films showed a better effect on thermochromic and deNOx (NOx reduction) activity than those of double-sided films for F–VO2/NTO samples. The best thermochromic and photocatalytic activities obtained from sample F–VO2/NTO 60 showed the ΔT1500 nm [difference of transmittance (ΔT) at the wavelength of 1500 nm under 25 °C and 95 °C] of up to 29.5% and deNOx activity of up to 40% at λ > 290 nm under mercury lamp irradiation. The use of F–VO2/NTO coexistence coating films showed the appropriateness for multifunctional materials.

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KW - Thermochromic

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