-
Stable ▫$TiO_2$▫ dispersions for nanocoatings preparation [Elektronski vir]Veronovski, Nika ...In this research the preparation and characterization of titanium (TiO2) coated self-cleaning cellulose materials starting from TiO2 P25 powder (Degussa, Germany) was studied. The aim of the research ... was to decrease high aggregation of TiO2 P25 nanoparticles, using surfactant species as dispersant and/or stabilisers (considering the balance between repulsive and attractive forces), in view of the fact that TiO2 nanoparticles, when optimally separatedinto smaller particles populations, present the best properties in the system they are used in (coatings) in. For this purpose cationic Alkanediyl-?,?-bis-N-dodecyl-N, N'-dimethyl-ammonium bromide (Gemini) and anionic Sodium dodecyl sulphate (SDS) surfactants were applied, with concentrations under their CMSs. Size and zeta-potential characterization of stable colloidal dispersions were performed. For stable 0.5, 2.5 and 5.0 mg/mL TiO2 dispersions in the presence of 250 * 10- 6 mol/L Gemini surfactant (zeta-potential ~ 40 mV) only two scattering populations were determined, at 78-95 nm and at ~ 280 nm. As a proof of stabilized TiO2 P25-surfactant colloidal dispersions uniform coatings were obtained, generatedat the fibres surfaces, which were analyzed by Scanning electron microscopy (SEM). With the usage of proper amounts of surfactants, homogeneousthin TiO2 coatings were formed. Superior dense coatings on the fibres surfaces were formed after treatment in 5.0 mg/mL aqueous TiO2 P25 dispersions, in the presence of 250 * 10- 6 mol/L Gemini surfactant in 5.0 * 10- 3 mol/L KBr at 25 °C. In addition to that, self-cleaning test was performed. Higher photocatalytic activity was determined for samples with denser coatings. Fibres with thin coatings had the lack of phototocataytic activity.Vir: Surface & coatings technology. - ISSN 0257-8972 (Vol. 204, no 9/10, Jan. 2010, str. 1445-1451)Vrsta gradiva - e-članekLeto - 2010Jezik - angleškiCOBISS.SI-ID - 13458454
Avtor
Veronovski, Nika |
Andreozzi, Patrizia |
La Mesa, Camillo |
Sfiligoj-Smole, Majda
Teme
TiO2 |
P25 |
kationska površinsko aktivna sredstva |
anionska površinsko aktivna sredstva |
prevleke |
zeta potencial |
SEM analize |
samočistilnost |
TiO2 |
cationic surfactants |
anionic surfactants |
coatings |
zeta potential |
SEM analysis |
self-cleaning
Vnos na polico
Trajna povezava
- URL:
Faktor vpliva
Dostop do baze podatkov JCR je dovoljen samo uporabnikom iz Slovenije. Vaš trenutni IP-naslov ni na seznamu dovoljenih za dostop, zato je potrebna avtentikacija z ustreznim računom AAI.
Leto | Faktor vpliva | Izdaja | Kategorija | Razvrstitev | ||||
---|---|---|---|---|---|---|---|---|
JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
Baze podatkov, v katerih je revija indeksirana
Ime baze podatkov | Področje | Leto |
---|
Povezave do osebnih bibliografij avtorjev | Povezave do podatkov o raziskovalcih v sistemu SICRIS |
---|---|
Veronovski, Nika | 25796 |
Andreozzi, Patrizia | |
La Mesa, Camillo | |
Sfiligoj-Smole, Majda | 04171 |
Izberite prevzemno mesto:
Prevzem gradiva po pošti
Obvestilo
Gesla v Splošnem geslovniku COBISS
Izbira mesta prevzema
Mesto prevzema | Status gradiva | Rezervacija |
---|
Prosimo, počakajte trenutek.