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23. Plastic Waste Precursor-Derived Fluorescent Carbon and Construction of Ternary FCs@CuO@TiO2 Hybrid Photocatalyst for Hydrogen Production and Sensing ApplicationAkansha Metha, Rayees Ahmad Rather, Blaž Belec, Sandra Gardonio, Ming Fang, Matjaž Valant, 2022, izvirni znanstveni članek Opis: A sustainable nexus between renewable energy production and plastic abatement is imperative for overall sustainable development. In this regard, this study aims to develop a cheaper and environmentally friendly nexus between plastic waste management, wastewater treatment, and renewable hydrogen production. Fluorescent carbon (FCs) were synthesized from commonly used LDPE (low-density polyethylene) by a facile hydrothermal approach. Optical absorption study revealed an absorption edge around 300 nm and two emission bands at 430 and 470 nm. The morphological analysis showed two different patterns of FCs, a thin sheet with 2D morphology and elongated particles. The sheet-shaped particles are 0.5 μm in size, while as for elongated structures, the size varies from 0.5 to 1 μm. The as-synthesized FCs were used for the detection of metal ions (reference as Cu2+ ions) in water. The fluorescence intensity of FCs versus Cu2+ ions depicts its upright analytical ability with a limit of detection (LOD) reaching 86.5 nM, which is considerably lesser than earlier reported fluorescence probes derived from waste. After the sensing of Cu2+, the as-obtained FCs@Cu2+ was mixed with TiO2 to form a ternary FCs@CuO@TiO2 composite. This ternary composite was utilized for photocatalytic hydrogen production from water under 1.5 AM solar light irradiation. The H2 evolution rate was found to be ~1800 μmolg−1, which is many folds compared to the bare FCs. Moreover, the optimized FCs@CuO@TiO2 ternary composite showed a photocurrent density of ~2.40 mA/cm2 at 1 V vs. Ag/AgCl, in 1 M Na2SO4 solution under the illumination of simulated solar light. The achieved photocurrent density corresponds to the solar-to-hydrogen (STH) efficiency of ~0.95%. The efficiency is due to the fluorescence nature of FCs and the synergistic effect of CuO embedded in TiO2, which enhances the optical absorption of the composite by reaching the bandgap of 2.44 eV, apparently reducing the recombination rate, which was confirmed by optoelectronic, structural, and spectroscopic characterizations. Ključne besede: plastic waste, fluorescent carbo, sensing of metal ions, photocatalytic hydrogen production Objavljeno v RUNG: 25.02.2022; Ogledov: 1731; Prenosov: 43 Celotno besedilo (5,98 MB) |
24. Silica coated Bi[sub]2Se[sub]3 topological insulator nanoplatelets : the way of making them colloidally stable but preserving their optical propertiesBlaž Belec, Nina Kostevšek, Sebastjan Nemec, Slavko Kralj, Sandra Gardonio, Mattia Fanetti, Matjaž Valant, 2021, objavljeni povzetek znanstvenega prispevka na konferenci Ključne besede: topological insulator, optical properties, topological surface states, silica-coated Objavljeno v RUNG: 27.09.2021; Ogledov: 2396; Prenosov: 0 Gradivo ima več datotek! Več... |
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28. Stoichiometry and disorder influence over electronic structure in nanostructured VO[sub]x filmsAlessandro D'Elia, S. J. Rezvani, Nicola Zema, F. Zuccaro, Mattia Fanetti, Blaž Belec, B. W. Li, C. W. Zou, Carlo Spezzani, Maurizio Sacchi, Augusto Marcelli, Marcello Coreno, 2021, izvirni znanstveni članek Ključne besede: nanoparticles, VOx films, electronic structure, nanostructured films Objavljeno v RUNG: 31.01.2021; Ogledov: 2448; Prenosov: 0 Gradivo ima več datotek! Več... |
29. Magnetic performance of SrFe12O19-Zn0.2Fe2.8O4 hybrid magnets prepared by Spark Plasma SinteringPetra Jenuš, Aleksander Učakar, S. Repše, Claudio Sangregorio, Mikkele Petrecca, M Albino, Cesar de Julian Fernandez, Blaž Belec, 2021, izvirni znanstveni članek Ključne besede: magnets, hybrid magnets, ferrites Objavljeno v RUNG: 26.01.2021; Ogledov: 2549; Prenosov: 0 Gradivo ima več datotek! Več... |
30. Spremljanje, ugotavljanje in zagotavljanje kakovosti: poročilo za študijsko leto 2019/2020 : Univerza v Novi Gorici. : poročilo za študijsko leto 2019/2020 : Univerza v Novi Gorici.Iztok Arčon, Jana Beguš, Blaž Belec, Martina Bergant Marušič, Lorena Butinar, IMRE CIKAJLO, Saša Dobričič, Sandra Gardonio, Renata Kop, Martin Knez, Boštjan Potokar, Branka Mozetič Vodopivec, Egon Pavlica, Samo Stanič, Tea Stibilj Nemec, Željko Oset, VERONIA Piccinini, Peter Purg, Arthur Stepanov, Aljaž Rener, Nives Štefančič, Ana Toroš, Tanja Urbančič, Vanesa Valentinčič, NIKA VODOPIVEC, elaborat, predštudija, študija Ključne besede: samoevalvacijsko poročilo Objavljeno v RUNG: 23.12.2020; Ogledov: 3458; Prenosov: 0 Gradivo ima več datotek! Več... |