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Title:

Characterisation of the inner structure and surface of nanoporous sodium-borate-silicate glasses

Group publication title:

Optica Applicata

Creator:

Novikov, Alexander F.

Contributor:

Gaj, Miron. Redakcja ; Wilk, Ireneusz. Redakcja

Subject and Keywords:

optyka ; anoporous glass ; X-ray phase analysis of microcrystals ; gas adsorption ; surface adsorption sites ; characteristic IR spectra of the glass surface

Description:

Optica Applicata, Vol. 35, 2005, nr 4, s. 701-708

Abstrakt:

Results of investigations are reported which have been carried out with use of some physical and chemical techniques on the nanoporous sodium-borate-silicate glasses with pore sizes within 5–100 nm. Porous structure is formed due to the leaching-out of initial glass Na 7/23 with phase separation. Some important parameters of the vitreous framework have been determined: percentage distribution of pores sizes, fractal dimensionality of porous glass, crystallinity grade within vitreous bulk, phase composition of crystalline areas within silica framework. The survey of the measured spectral characteristics (mainly in the infrared wave range) of the porous glass surface and its interpretation are presented. Spectral behaviour of some species immobilised on the surface of nanopores is discussed. Interaction of the silica surface, adsorbates and ambient gas medium is interpreted on the basis of the Pearson–Lewis conception about hard and soft acids and bases.

Publisher:

Oficyna Wydawnicza Politechniki Wrocławskiej

Place of publication:

Wrocław

Date:

2005

Resource Type:

artykuł

Source:

<sygn. PWr A3481II> ; click here to follow the link ; click here to follow the link

Language:

eng

Relation:

Optica Applicata ; Optica Applicata, Vol. 35, 2005 ; Optica Applicata, Vol. 35, 2005, nr 4 ; Politechnika Wrocławska. Wydział Podstawowych Problemów Techniki

Rights:

Wszystkie prawa zastrzeżone (Copyright)

Access Rights:

Dla wszystkich w zakresie dozwolonego użytku

Location:

Politechnika Wrocławska