Repozitorij Univerze v Novi Gorici

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1.
Morphous aluminium oxide : a promising candidate for a photoanode protection layer
Andraž Mavrič, Chunhua Cui, Matjaž Valant, 2019, objavljeni povzetek znanstvenega prispevka na konferenci

Ključne besede: aluminium oxide, metal oxides, protection layers
Objavljeno v RUNG: 10.02.2020; Ogledov: 4345; Prenosov: 0
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2.
Metal oxide and metal carbides thin films for photo/electrochemical water splitting studies
Saim Emin, 2017, objavljeni povzetek znanstvenega prispevka na konferenci

Opis: We used wet-chemistry techniques to prepare colloidal tungsten (W) nanoparticles (NPs). The synthesis of W NPs was conducted using the so called hot-matrix method in 1-octadecene [1]. The sizes of obtained W NPs are in the order of 2 - 5 nm. These W NPs are coated with hydrophobic molecules which allow their dispersion in organic solvents like choloroform (CHCl3). It was found that the colloidal stability of the dispersions is exceptionally high exceeding several years. The stability of W NPs which prevents coagulation allows the preparation of thin films with uniform thicknesses by spin-coating, inkjet-printing and spray coating. We have prepared both tungsten trioxide (WO3) and tungsten carbide (W2C, WC) thin films. The preparation of WO3 thin films was achieved by spin-coating of W NPs on fluorine doped tin oxide (FTO) glass substrates and following thermal treatment in air at 500°C. The preparation of W2C and WC were done after spin-coating of W NPs on graphite substrate and following heat treatment under Ar atmosphere at 1000 and 1450°C. The obtained WO3 and W2C (e.g WC) films were used both in photo/electrochemical water splitting studies. In conclusion, we have developed a procedure for the synthesis of W NPs which can be used for the preparation of different class of materials for water splitting studies.
Ključne besede: metal oxides, metal carbides, tungsten nanoparticles
Objavljeno v RUNG: 09.10.2017; Ogledov: 6157; Prenosov: 0
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