Smart optically active VO2 nanostructured layers applied in roof-type ceramic tiles for energy efficiency

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

The capability to control in an smart way the infrared reflectance to environmental temperature variations can be achieved with thermochromic materials like VO2. In this paper, we report the application of VO2 on ceramic tiles aiming to control the reflected infrared radiation on smart roofs and thus improving the energy efficiency, which is associated to the reduction of the carbon dioxide emissions. The VO2 nanoparticles have been produced by hydrothermal synthesis assisted by microwave irradiation, providing a new, quicker and cleaner production route. Afterwards, the VO2 nanoparticles were transferred to the surface of ceramic glassy tiles, which were prepared through dispersing the nanopowders in water and followed by spray coating with posterior annealing treatments in order to promote the surface adhesion as well as the stabilization of the material monoclinic phase. The VO2 transition temperature was controlled by doping with tungsten and a reduction from 69 °C to 49 °C was achieved. The superior thermochromic characteristics of VO2 nanoparticles in conjunction with this new application to a smart roof offers a great potential to regulate the energy in an intelligent way.

Original languageEnglish
Pages (from-to)1-9
Number of pages9
JournalSolar Energy Materials and Solar Cells
Volume150
DOIs
Publication statusPublished - 1 Jun 2016

Fingerprint

Tile
Roofs
Energy efficiency
Nanoparticles
Infrared radiation
Tungsten
Microwave irradiation
Hydrothermal synthesis
Carbon Dioxide
Superconducting transition temperature
Carbon dioxide
Adhesion
Stabilization
Doping (additives)
Annealing
Coatings
Water
Temperature

Keywords

  • Ceramic tiles
  • Energy efficiency
  • Smart roof
  • Spray coating
  • Thermochromic
  • VO nanoparticles

Cite this

@article{ae3e26c9dd60450d885ce11cac01c962,
title = "Smart optically active VO2 nanostructured layers applied in roof-type ceramic tiles for energy efficiency",
abstract = "The capability to control in an smart way the infrared reflectance to environmental temperature variations can be achieved with thermochromic materials like VO2. In this paper, we report the application of VO2 on ceramic tiles aiming to control the reflected infrared radiation on smart roofs and thus improving the energy efficiency, which is associated to the reduction of the carbon dioxide emissions. The VO2 nanoparticles have been produced by hydrothermal synthesis assisted by microwave irradiation, providing a new, quicker and cleaner production route. Afterwards, the VO2 nanoparticles were transferred to the surface of ceramic glassy tiles, which were prepared through dispersing the nanopowders in water and followed by spray coating with posterior annealing treatments in order to promote the surface adhesion as well as the stabilization of the material monoclinic phase. The VO2 transition temperature was controlled by doping with tungsten and a reduction from 69 °C to 49 °C was achieved. The superior thermochromic characteristics of VO2 nanoparticles in conjunction with this new application to a smart roof offers a great potential to regulate the energy in an intelligent way.",
keywords = "Ceramic tiles, Energy efficiency, Smart roof, Spray coating, Thermochromic, VO nanoparticles",
author = "A. Gon{\cc}alves and J. Resende and Marques, {A. C.} and Pinto, {J. V.} and D. Nunes and A. Marie and Gon{\cc}alves, {Rosana F.} and L. Pereira and R. Martins and E. Fortunato",
note = "This work was supported by the QREN project i-Tiles 39004 and partially by FEDER funds through the COMPETE 2020 Programme and National Funds through FCT – Portuguese Foundation for Science and Technology under the project UID/CTM/50025/2013 . We acknowledge Umbelino Monteiro for supplying the ceramic tiles.",
year = "2016",
month = "6",
day = "1",
doi = "10.1016/j.solmat.2016.02.001",
language = "English",
volume = "150",
pages = "1--9",
journal = "Solar Energy Materials and Solar Cells",
issn = "0927-0248",
publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Smart optically active VO2 nanostructured layers applied in roof-type ceramic tiles for energy efficiency

AU - Gonçalves, A.

AU - Resende, J.

AU - Marques, A. C.

AU - Pinto, J. V.

AU - Nunes, D.

AU - Marie, A.

AU - Gonçalves, Rosana F.

AU - Pereira, L.

AU - Martins, R.

AU - Fortunato, E.

N1 - This work was supported by the QREN project i-Tiles 39004 and partially by FEDER funds through the COMPETE 2020 Programme and National Funds through FCT – Portuguese Foundation for Science and Technology under the project UID/CTM/50025/2013 . We acknowledge Umbelino Monteiro for supplying the ceramic tiles.

PY - 2016/6/1

Y1 - 2016/6/1

N2 - The capability to control in an smart way the infrared reflectance to environmental temperature variations can be achieved with thermochromic materials like VO2. In this paper, we report the application of VO2 on ceramic tiles aiming to control the reflected infrared radiation on smart roofs and thus improving the energy efficiency, which is associated to the reduction of the carbon dioxide emissions. The VO2 nanoparticles have been produced by hydrothermal synthesis assisted by microwave irradiation, providing a new, quicker and cleaner production route. Afterwards, the VO2 nanoparticles were transferred to the surface of ceramic glassy tiles, which were prepared through dispersing the nanopowders in water and followed by spray coating with posterior annealing treatments in order to promote the surface adhesion as well as the stabilization of the material monoclinic phase. The VO2 transition temperature was controlled by doping with tungsten and a reduction from 69 °C to 49 °C was achieved. The superior thermochromic characteristics of VO2 nanoparticles in conjunction with this new application to a smart roof offers a great potential to regulate the energy in an intelligent way.

AB - The capability to control in an smart way the infrared reflectance to environmental temperature variations can be achieved with thermochromic materials like VO2. In this paper, we report the application of VO2 on ceramic tiles aiming to control the reflected infrared radiation on smart roofs and thus improving the energy efficiency, which is associated to the reduction of the carbon dioxide emissions. The VO2 nanoparticles have been produced by hydrothermal synthesis assisted by microwave irradiation, providing a new, quicker and cleaner production route. Afterwards, the VO2 nanoparticles were transferred to the surface of ceramic glassy tiles, which were prepared through dispersing the nanopowders in water and followed by spray coating with posterior annealing treatments in order to promote the surface adhesion as well as the stabilization of the material monoclinic phase. The VO2 transition temperature was controlled by doping with tungsten and a reduction from 69 °C to 49 °C was achieved. The superior thermochromic characteristics of VO2 nanoparticles in conjunction with this new application to a smart roof offers a great potential to regulate the energy in an intelligent way.

KW - Ceramic tiles

KW - Energy efficiency

KW - Smart roof

KW - Spray coating

KW - Thermochromic

KW - VO nanoparticles

UR - http://www.scopus.com/inward/record.url?scp=84958166341&partnerID=8YFLogxK

U2 - 10.1016/j.solmat.2016.02.001

DO - 10.1016/j.solmat.2016.02.001

M3 - Article

VL - 150

SP - 1

EP - 9

JO - Solar Energy Materials and Solar Cells

JF - Solar Energy Materials and Solar Cells

SN - 0927-0248

ER -