Abstract

Aggregates of cobalt doped TiO2 nanoparticles have been prepared through a sol gel method and annealed at 450°C and 550°C. The resulting aggregates were characterized with X-ray diffraction, Field emission scanning electron microscopy, scanning electron microscopy with energy dispersive X-ray analysis and Raman spectroscopy. Later the photocatalytic (PC) activity of the prepared samples was evaluated following the degradation of a solution of methylene blue containing the aggregated nanoparticles under UV (375-385nm) and green (525-535nm) light with a UV-Vis spectrophotometer. Experimental results show that varying the annealing temperature influenced the anatase/rutile ratio in the samples, however in all cases nanostructured particles aggregated to form micro-grains were observed. Furthermore the PC activity of the sample containing a majority of anatase was more active than the one containing both rutile and anatase, having a PC activity comparable to the commercial product and therefore suitable for use in PC coatings.

Conference

Conference ENERGY FORUM on Advanced Building Skins
CountryItaly
CityBressanone
Period28/10/1429/10/14

Fingerprint

Nanostructures
Coatings
Nanoparticles
Ultraviolet spectrophotometers
Scanning electron microscopy
Energy dispersive X ray analysis
Methylene Blue
Cobalt
Field emission
Sol-gel process
Raman spectroscopy
titanium dioxide
Annealing
X ray diffraction
Degradation
Temperature

Keywords

  • nanoparticles
  • TiO2
  • cobalt
  • doping
  • photocatalytic activity

Cite this

Giampiccolo, A., Ball, R., Ansell, M., & Maskell, D. (2014). Synthesis of Co-doped TiO2 nanostructures for novel photo-catalytic coatings. Paper presented at ENERGY FORUM on Advanced Building Skins, Bressanone, Italy.

Synthesis of Co-doped TiO2 nanostructures for novel photo-catalytic coatings. / Giampiccolo, Andrea; Ball, Richard; Ansell, Martin; Maskell, Daniel.

2014. Paper presented at ENERGY FORUM on Advanced Building Skins, Bressanone, Italy.

Research output: Contribution to conferencePaper

Giampiccolo, A, Ball, R, Ansell, M & Maskell, D 2014, 'Synthesis of Co-doped TiO2 nanostructures for novel photo-catalytic coatings' Paper presented at ENERGY FORUM on Advanced Building Skins, Bressanone, Italy, 28/10/14 - 29/10/14, .
Giampiccolo A, Ball R, Ansell M, Maskell D. Synthesis of Co-doped TiO2 nanostructures for novel photo-catalytic coatings. 2014. Paper presented at ENERGY FORUM on Advanced Building Skins, Bressanone, Italy.
Giampiccolo, Andrea ; Ball, Richard ; Ansell, Martin ; Maskell, Daniel. / Synthesis of Co-doped TiO2 nanostructures for novel photo-catalytic coatings. Paper presented at ENERGY FORUM on Advanced Building Skins, Bressanone, Italy.
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AB - Aggregates of cobalt doped TiO2 nanoparticles have been prepared through a sol gel method and annealed at 450°C and 550°C. The resulting aggregates were characterized with X-ray diffraction, Field emission scanning electron microscopy, scanning electron microscopy with energy dispersive X-ray analysis and Raman spectroscopy. Later the photocatalytic (PC) activity of the prepared samples was evaluated following the degradation of a solution of methylene blue containing the aggregated nanoparticles under UV (375-385nm) and green (525-535nm) light with a UV-Vis spectrophotometer. Experimental results show that varying the annealing temperature influenced the anatase/rutile ratio in the samples, however in all cases nanostructured particles aggregated to form micro-grains were observed. Furthermore the PC activity of the sample containing a majority of anatase was more active than the one containing both rutile and anatase, having a PC activity comparable to the commercial product and therefore suitable for use in PC coatings.

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KW - cobalt

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