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1.
Novel two-step vapor-phase synthesis of UV – Vis light active Fe2O3/WO3 nanocomposites for phenol degradation
Urška Lavrenčič Štangar, Olena Pliekhova, Mariangela Brisotto, Elza Bontempi, Cinzia Sada, Chiara Maccato, Alberto Gasparotto, Giorgio Carraro, Davide Barreca, 2016, izvirni znanstveni članek

Opis: Supported Fe2O3/WO3 nanocomposites were fabricated by an original vapor phase approach, involving the chemical vapor deposition (CVD) of Fe2O3 on Ti sheets and the subsequent radio frequency (RF)-sputtering of WO3. Particular attention was dedicated to the control of the W/Fe ratio, in order to tailor the composition of the resulting materials. The target systems were analyzed by the joint use of complementary techniques, that is, X-ray diffraction (XRD), field emission-scanning electron microscopy (FE-SEM), atomic force microscopy (AFM), energy dispersive X-ray spectroscopy (EDXS), X-ray photoelectron spectroscopy (XPS), secondary ion mass spectrometry (SIMS), and optical absorption spectroscopy. The results showed the uniform decoration of α-Fe2O3 (hematite) globular particles by tiny WO3 aggregates, whose content could be controlled by modulations of the sole sputtering time. The photocatalytic degradation of phenol in the liquid phase was selected as a test reaction for a preliminary investigation of the system behavior in wastewater treatment applications. The system activity under both UVand Vis light illumination may open doors for further material optimization in view of real-world end-uses.
Najdeno v: ključnih besedah
Povzetek najdenega: ...on Ti sheets and the subsequent radio frequency (RF)- sputtering of WO3. Particular attention was dedicated to the...
Ključne besede: Fe2O3, WO3, Nanocomposites, Chemical vapor deposition, Sputtering, Photocatalysis
Objavljeno: 03.08.2016; Ogledov: 3859; Prenosov: 0
.pdf Polno besedilo (1,91 MB)

2.
Hematite-based nanocomposites for light-activated applications: Synergistic role of TiO2 and Au introduction
Giorgio Carraro, Chiara Maccato, Alberto Gasparotto, Michael E.A Warwick, Cinzia Sada, Stuart Turner, Antonio Bazzo, Teresa Andreu, Olena Pliekhova, Dorota Korte, Urška Lavrenčič Štangar, Gustaaf Van Tendeloo, Joan Ramón Morante, Davide Barreca, 2017, izvirni znanstveni članek

Najdeno v: ključnih besedah
Povzetek najdenega: ...Fe2O3-TiO2-Au, Plasma enhanced-chemical vapor deposition, Sputtering, Photocatalysis...
Ključne besede: Fe2O3-TiO2-Au, Plasma enhanced-chemical vapor deposition, Sputtering, Photocatalysis
Objavljeno: 10.10.2016; Ogledov: 3982; Prenosov: 0
.pdf Polno besedilo (1,16 MB)

3.
RF sputtered boron carbide thin film for UVB and UVC shielding: A greener approach
Swapna Mohanachandran Nair Sindhu, 2022, izvirni znanstveni članek

Opis: The paper reports the development of RF sputtered boron carbide coatings as refractory and UV-shielder for high-temperature goggles and spacecraft applications. The advancement in the design and fabrication of machinery and UV optics necessitates the development of low-cost, eco-friendly preparation of wear-resistant refractory coatings with strong absorption in the UV region. Boron carbide coatings have proven their potential as abrasives besides their electronic applications. In the present work, boron carbide coatings are prepared by RF sputtering technique using the target prepared by low-temperature hydrothermal synthesis using cotton as carbon precursor. The sample synthesized and the film prepared are subjected to structure, morphological, and optical characterizations. The X-ray diffraction, Fourier transform infrared, micro-Raman and X-ray photoelectron studies confirm the formation of boronrich boron carbide with the thermal stability of 87% at 800 C, revealed through the thermogravimetric analysis. The Tauc plot analysis gives the bandgap energy of the boron carbide target and film as 2.66 eV and 2.70 eV, respectively. The UV–Vis spectroscopic study also reveals the potential of the sample and the film in blocking UVB and UVC. The CIE plot from the photoluminescence study suggests the sample to be a blue light emitter.
Najdeno v: ključnih besedah
Povzetek najdenega: ...work, boron carbide coatings are prepared by RF sputtering technique using the target prepared by low-temperature hydrothermal...
Ključne besede: Boron carbide, RF sputtering, uv shielding, thin films
Objavljeno: 30.06.2022; Ogledov: 141; Prenosov: 0
.pdf Polno besedilo (1,78 MB)

4.
Speckle interferometric probing of intrafilm thermal-induced particle dynamics in RF-sputtered MoO[sub]3 films
S. Soumya, S. Sreejyothi, Vimal Raj, Mohanachandran Nair Sindhu Swapna, Sankaranarayana Iyer Sankararaman, 2022, izvirni znanstveni članek

Najdeno v: ključnih besedah
Povzetek najdenega: ...speckle interferometry, thermal-induced particle dynamics, RF sputtering, MoO3 films...
Ključne besede: speckle interferometry, thermal-induced particle dynamics, RF sputtering, MoO3 films
Objavljeno: 30.08.2022; Ogledov: 120; Prenosov: 3
.pdf Polno besedilo (14,91 MB)
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