Anatase powders, both pure and vanadium-doped, were subjected to acid-base leaching cycles. The different samples were characterized with respect to chemical composition, morphology and surface area. The effects of the different treatments on the chemical state of the surface and on the electrification at the solid-solution boundary were investigated, respectively, by X-ray photoelectron spectroscopy and electrophoretic mobility measurements. The stability of the aqueous suspensions was measured by sedimentation tests. The results of the different determinations are cross-compared in order to produce a general description of the catalysts. Anatase powders, both pure and vanadium-doped, were subjected to acid-base leaching cycles. The different samples were characterized with respect to chemical composition, morphology and surface area. The effects of the different treatments on the chemical state of the surface and on the electrification at the solid-solution boundary were investigated, respectively, by X-ray photoelectron spectroscopy and electrophoretic mobility measurements. The stability of the aqueous suspensions was measured by sedimentation tests. The results of the different determinations are cross-compared in order to produce a general description of the catalysts.

Vanadium-doped TiO2 catalysts. A unifying picture of powders and suspensions / E. Roncari, C. Galassi, S. Ardizzone, C.L.Bianchi. - In: COLLOIDS AND SURFACES. A, PHYSICOCHEMICAL AND ENGINEERING ASPECTS. - ISSN 0927-7757. - 117:3(1996), pp. 267-272.

Vanadium-doped TiO2 catalysts. A unifying picture of powders and suspensions

S. Ardizzone;C.L.Bianchi
1996

Abstract

Anatase powders, both pure and vanadium-doped, were subjected to acid-base leaching cycles. The different samples were characterized with respect to chemical composition, morphology and surface area. The effects of the different treatments on the chemical state of the surface and on the electrification at the solid-solution boundary were investigated, respectively, by X-ray photoelectron spectroscopy and electrophoretic mobility measurements. The stability of the aqueous suspensions was measured by sedimentation tests. The results of the different determinations are cross-compared in order to produce a general description of the catalysts. Anatase powders, both pure and vanadium-doped, were subjected to acid-base leaching cycles. The different samples were characterized with respect to chemical composition, morphology and surface area. The effects of the different treatments on the chemical state of the surface and on the electrification at the solid-solution boundary were investigated, respectively, by X-ray photoelectron spectroscopy and electrophoretic mobility measurements. The stability of the aqueous suspensions was measured by sedimentation tests. The results of the different determinations are cross-compared in order to produce a general description of the catalysts.
catalysts; double layer; titania; vanadium
Settore CHIM/02 - Chimica Fisica
COLLOIDS AND SURFACES. A, PHYSICOCHEMICAL AND ENGINEERING ASPECTS
Article (author)
File in questo prodotto:
Non ci sono file associati a questo prodotto.
Pubblicazioni consigliate

Caricamento pubblicazioni consigliate

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2434/185356
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 7
  • ???jsp.display-item.citation.isi??? 6
social impact