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Synthesis of Co-doped TiO2 nanostructures for novel photo-catalytic coatings


Reference:

Giampiccolo, A., Ball, R., Ansell, M. and Maskell, D., 2014. Synthesis of Co-doped TiO2 nanostructures for novel photo-catalytic coatings. In: ENERGY FORUM on Advanced Building Skins, 2014-10-28 - 2014-10-29, Forum Bressanone, Via Roma 9 in Bressanone.

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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.

Details

Item Type Conference or Workshop Items (Paper)
CreatorsGiampiccolo, A., Ball, R., Ansell, M. and Maskell, D.
Uncontrolled Keywordsnanoparticles,tio2,cobalt,doping,photocatalytic activity
DepartmentsFaculty of Engineering & Design > Architecture & Civil Engineering
Faculty of Engineering & Design > Mechanical Engineering
Research CentresBRE Centre in Innovative Construction Materials
Materials Research Centre
RefereedYes
StatusPublished
ID Code42282

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