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21.
Zr and Cu modified TiO2 photocatalysts for water treatment
Olena Pliekhova, Urška Lavrenčič Štangar, 2016, objavljeni povzetek znanstvenega prispevka na konferenci

Najdeno v: ključnih besedah
Povzetek najdenega: ...TiO2, water treatment, surface modification...
Ključne besede: TiO2, water treatment, surface modification
Objavljeno: 23.08.2017; Ogledov: 1795; Prenosov: 0
.pdf Polno besedilo (564,11 KB)

22.
Structural analysis of sunlight efficient Cu and Zr modified TiO2 photocatalyst
Olena Pliekhova, Iztok Arčon, Urška Lavrenčič Štangar, 2017, objavljeni povzetek znanstvenega prispevka na konferenci

Najdeno v: ključnih besedah
Povzetek najdenega: ...TiO2, photocatalysis, EXAFS, surface modification...
Ključne besede: TiO2, photocatalysis, EXAFS, surface modification
Objavljeno: 23.08.2017; Ogledov: 1734; Prenosov: 0
.pdf Polno besedilo (577,74 KB)

23.
Contribution of Cu and Zr to the Properties of TiO2 for Photocatalytic Water Treatment
Olena Pliekhova, Iztok Arčon, Nataša Novak Tušar, Urška Lavrenčič Štangar, 2017, objavljeni povzetek znanstvenega prispevka na konferenci

Najdeno v: ključnih besedah
Povzetek najdenega: ...Photocatalysis, water treatment, surface modification, durability...
Ključne besede: Photocatalysis, water treatment, surface modification, durability
Objavljeno: 23.08.2017; Ogledov: 1844; Prenosov: 0
.pdf Polno besedilo (509,62 KB)

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Surface modified titanium dioxide using transition metals
Andraž Šuligoj, Iztok Arčon, Matjaž Mazaj, Goran Dražić, Denis Arčon, Pegie Cool, Urška Lavrenčič Štangar, Nataša Novak Tušar, 2018, izvirni znanstveni članek

Opis: Titanium dioxide has been widely used as an antimicrobial agent, UV-filter and catalyst for pollution abatement. Herein, surface modifications with selected transition metals (Me) over colloidal TiO2 nanoparticles and immobilization with a colloidal SiO2 binder as composite films (MeTiO2/SiO2) on a glass carrier were used to enhance solar-light photoactivity. Colloidal TiO2 nanoparticles were modified by loading selected transition metals (Me ¼ Mn, Fe, Co, Ni, Cu, and Zn) in the form of chlorides on their surface. They were present primarily as oxo-nanoclusters and a portion as metal oxides. The structural characteristics of bare TiO2 were preserved up to an optimal metal loading of 0.5 wt%. We have shown in situ that metal-oxo-nanoclusters with a redox potential close to that of O2/O2 were able to function as co-catalysts on the TiO2 surface which was excited by solar-light irradiation. The materials were tested for photocatalytic activity by two opposite methods; one detecting O2 (reduction, Rz ink test) while the other detecting OH (oxidation, terephthalic acid test). It was shown that the enhancement of the solar-light activity of TiO2 by the deposition of transition metal oxo-nanoclusters on the surface depends strongly on the combination of the reduction potential of such species and appropriate band positions of their oxides. The latter prevented excessive self-recombination of the photogenerated charge carriers by the nanoclusters in Ni and Zn modification, which was probably the case in other metal modifications. Overall, only Ni modification had a positive effect on solar photoactivity in both oxidation and reduction reactions.
Najdeno v: ključnih besedah
Ključne besede: surface modified TiO2, XANES, EXAFS, Nickel, solar light photocatalyst
Objavljeno: 01.06.2018; Ogledov: 1052; Prenosov: 0
.pdf Polno besedilo (1,24 MB)

28.
Energy enhancement of the target surface electron by using a 200 TW sub-picosecond laser
J. Y. Mao, 2018, izvirni znanstveni članek

Opis: One order of magnitude energy enhancement of the target surface electron beams with central energy at 11.5 MeV is achieved by using a 200 TW, 500 fs laser at an incident angle of 72° with a prepulse intensity ratio of 5×10−6. The experimental results demonstrate the scalability of the acceleration process to high electron energy with a longer (sub-picosecond) laser pulse duration and a higher laser energy (120 J). The total charge of the beam is 400±20 pC(
Najdeno v: ključnih besedah
Ključne besede: Strong field laser physics, Plasmas, Particles, Femtosecond phenomena, Surface dynamics.
Objavljeno: 07.08.2018; Ogledov: 1918; Prenosov: 0
.pdf Polno besedilo (421,81 KB)

29.
The effect of Zr loading on photocatalytic activity of Cu modified TiO2
Urška Lavrenčič Štangar, Nataša Novak Tušar, O. L. Pliekhov, Mattia Fanetti, Iztok Arčon, Olena Pliekhova, 2018, objavljeni znanstveni prispevek na konferenci

Najdeno v: ključnih besedah
Povzetek najdenega: ...Titanium diokside, acidic sites, surface titration, copper, zirconium...
Ključne besede: Titanium diokside, acidic sites, surface titration, copper, zirconium
Objavljeno: 10.09.2018; Ogledov: 1175; Prenosov: 0
.pdf Polno besedilo (39,79 MB)

30.
Transparent Photocatalytic Thin Films on Flexible Polymer Substrates
Nives Vodišek, Andraž Šuligoj, Dorota Korte, Urška Lavrenčič Štangar, 2018, izvirni znanstveni članek

Najdeno v: ključnih besedah
Povzetek najdenega: ...photocatalysis, self-cleaning surface, TiO2, ZrO2, SiO2, transparent films, thermosensitive substrates,...
Ključne besede: photocatalysis, self-cleaning surface, TiO2, ZrO2, SiO2, transparent films, thermosensitive substrates, PMMA, PVC, PES, PVDF
Objavljeno: 19.10.2018; Ogledov: 1103; Prenosov: 81
.pdf Polno besedilo (4,37 MB)

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