1. ORR stability of Mn–Co/polypyrrole nanocomposite electrocatalysts studied by quasi in-situ identical-location photoelectron microspectroscopyMaya Kiskinova, Claudio Mele, Hikmet Sezen, Benedetto Bozzini, Mattia Fanetti, Andrea Goldoni, Luca Gregoratti, Belen Aleman, Matteo Amati, Patrizia Bocchetta, 2016, izvirni znanstveni članek Opis: The stability of pyrolyzed Mn–Co/polypyrrole (PPy) nanocomposites towards the Oxygen Reduction Reaction (ORR)
in alkaline solution, was studied with a close-knit group of complementary microscopic and space-resolved spectroscopic
approaches: Atomic Force Microscopy (AFM), Scanning and High-Resolution Transmission Electron
Microscopy (SEM, HRTEM) and identical-location Scanning PhotoElectron Microscopy (SPEM). Tracking quasi-in
situ the morphochemical evolution of the Mn–Co/PPy catalyst upon electrochemical aging under ORR conditions
by this multi-technique approach, has allowed to clarify the key physico-chemical processes underlying
the dramatic impact of Co additions to stability improvement.
Najdeno v: ključnih besedah
Povzetek najdenega: ...The stability of pyrolyzed Mn–Co/polypyrrole (PPy) nanocomposites towards the Oxygen Reduction Reaction (ORR)
in alkaline...
Ključne besede: Mixed manganese oxides, Polypyrrole, Oxygen reduction, Electrocatalysis, Nanocomposites, X-ray photoelectron microspectroscopy
Objavljeno: 25.07.2016; Ogledov: 4439; Prenosov: 0
 Polno besedilo (1,36 MB) |
2. Novel two-step vapor-phase synthesis of UV – Vis light active Fe2O3/WO3 nanocomposites for phenol degradationUrška 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
Ključne besede: Fe2O3, WO3, Nanocomposites, Chemical vapor deposition, Sputtering, Photocatalysis
Objavljeno: 03.08.2016; Ogledov: 4236; Prenosov: 0
Polno besedilo (1,91 MB) |
3. CuO Quantum Dots Decorated TiO2 Nanocomposite Photocatalyst for Stable Hydrogen GenerationValluri Durga Kumari, Saim Emin, Nagappagari Lakshmana Reddy, Shankar Muthukonda Venkatakrishnan, 2017, izvirni znanstveni članek Najdeno v: ključnih besedah
Povzetek najdenega: ...photocatalysis, nanocomposites, TiO2...
Ključne besede: photocatalysis, nanocomposites, TiO2
Objavljeno: 31.01.2018; Ogledov: 2663; Prenosov: 0
Polno besedilo (8,78 MB) |
