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1903. Photoelectrocatalytic water splitting and dye degradation with fluorine doped tin oxides filmsManel Machreki, Takwa Chouki, Saim Emin, 2019, objavljeni povzetek znanstvenega prispevka na konferenci Opis: We report the photoelectrochemical (PEC) water splitting with flourine doped tin oxide (FTO) films. This is the first study where efficient water splitting is achieved with FTO films under light illumination. Potentiostatic test at 1.7 V vs reversible hydrogen electrode (RHE) show that FTO material is very stable for water oxidation without occurence of a noticable current drop over a span of 6 hours. Mass spectrometry analysis of evolved gasses confermed the formation of oxygen and hydrogen in the two half cells (separated by a membrane). Moreover, it was demonstrated that the water splitting reaction involve formation of hydroxyl radicals (•OH) which are known oxidants for organics. We applied these FTO films for degradation of a model pollutant rhodamine B dye (1×10−5 mol/l). PEC assisted degradation of rhodamine B took about 30 min to achieve complete degradation of 60 ml model dye solution.
Ključne besede: FTO, thin films, dye degradation
Objavljeno v RUNG: 13.05.2021; Ogledov: 2116; Prenosov: 0
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1904. Electrocatalytic hydrogen evolution with textured iron phosphides thin filmsSaim Emin, 2019, objavljeni povzetek znanstvenega prispevka na konferenci Opis: We used wet-chemistry techniques to prepare colloidal iron phosphides (F2P) nanoparticles (NPs). The synthesis of Fe2P NPs was conducted using the so called hot-matrix method [1]. The sizes of obtained Fe2P NPs are in the order of 2 - 5 nm. The colloidal Fe2P NPs are coated with hydrophobic molecules which allow preparation of stable dispersion in organic solvents like choloroform (CHCl3). The colloidal F2P NPs are very suitable for the preparation of thin films via spin-coated, spray coated or inkjet-printed on various conductive substrates. The obtained Fe2P films were used in hydrogen evolution reaction (HER). In addition, to HER the Fe2P films were used for electrocatalytic degradation of organics.
Ključne besede: Fe2P, electroctalysis, thin films
Objavljeno v RUNG: 13.05.2021; Ogledov: 2411; Prenosov: 0
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1905. Solvothermal synthesis of iron phosphides and their application for efficient electrocatalytic hydrogen evolutionTakwa Chouki, Manel Machreki, Saim Emin, 2020, objavljeni povzetek znanstvenega prispevka na konferenci Opis: We report the solvothermal synthesis of iron phosphide electrocatalysts using a low-cost phosphorus precursor [1]. The synthetic protocol allows for the preparation of a Fe2P phase at 300°C and FeP phase at 350°C. To enhance the catalytic activities of obtained iron phosphide particles, heat-treatments were carried out at elevated temperatures. Annealing at 500°C induced structural changes in the samples: (i) Fe2P provided a pure Fe3P phase (Fe3P−500°C) and (ii) FeP transformed into a mixture of iron phosphide phases (Fe2P/FeP−500°C). The electrocatalytic activities of heat-treated Fe2P−450°C, Fe3P−500°C, and Fe2P/FeP−500°C catalysts were studied for hydrogen evolution reaction (HER) in 0.5 M sulfuric acid (H2SO4). The HER activities of the iron phosphide catalyst were found to be phase dependent. The lowest recorded overpotential of 110 mV at 10 mA cm−2 vs. a reversible hydrogen electrode was achieved with Fe2P/FeP−500°C catalyst. The present approach allows the preparation of immobilized iron phsphide catalyst onto carbon support which is essential for application purpose. The procedure developed by us is an elegant approach to tune the composition of iron phosphide catalyst and control the morphology of particles.
Ključne besede: solvothermal synthesis, iron phosphide, electrocatalyst, hydrogen evolution, overpotential
Objavljeno v RUNG: 13.05.2021; Ogledov: 2183; Prenosov: 0
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1907. Pripovedovalne strategije med inovacijo in pedagoško prakso : PRINOBarbara Pregelj, Barbara Baloh, Eda Birsa, Anika Velišček, Barbara Masten, Lucija Selan, Tjaša Doliak, Mija Umer, Sara Spruk, 2020, strokovna monografija Opis: Priročnik prinaša didaktizacije, ki so nastala v okviru projekta PRINO, v katerem so sodelovali pedagoški in delovni mentorji ter študentke Univerze na Primorskem Pedagoške fakultete in Univerze v Novi Gorici. Projekt je potekal v okviru programa Po kreativni poti do znanja.
Ključne besede: pouk, didaktika
Objavljeno v RUNG: 12.05.2021; Ogledov: 2377; Prenosov: 29
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1908. Paragvajske pravljice2021, druge monografije in druga zaključena dela Opis: Pogovor o projektu, ki je prevedel do izida knjige Paragvajskih pravljic, kolektivnem načinu prevajanja in moči literature, da nas popelje v neznane svetove, tokrat v Paragvaj.
Prevod je pod mentorstvom Maje Šabec in Urše Geršak pripravilo 21 študentov druge stopnje hispanistike z ljubljanske Filozofske fakultete.
V pogovoru sodelujejo: Ines Metličar, Nina Kraševec, Iva Vogrič, Alex Centa, Urška Perhavec, Ana Zelenko, Zala Kerec, Anamarija Kočevar, Maja Šabec, Urša Geršak in Barbara Pregelj.
Moderiranje: Nace Fock.
Ključne besede: prevajanje, mladinska književnost, skupinsko prevajanje, paragvajska literatura
Objavljeno v RUNG: 12.05.2021; Ogledov: 2235; Prenosov: 10
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1909. Knjiga kot podaljšek spomina in domišljije : pogovor o sodelovanju na kulturnem področju2021, druge monografije in druga zaključena dela Opis: V okviru dni LAC na pogovoru o sodelovanju na kulturnem področju predstavljamo založniški projekt sodelovanja, ki je pripeljal do izida antologije slovenskih mladinskih avtorjev v Paragvaju (Lo que susurraron las nubes) in paragvajskih v Sloveniji (Paragvajske pravljice). V kontekstu obeleževanja stote obletnice rojstva antropologinje Branislave Sušnik smo nekaj pozornosti namenili tudi projektom, povezanim z njo, pa tudi drugim kulturnim in projektom promocije slovenske literature, ki jih izvaja založba Malinc.
Sodelujejo:
moderatorka Irena Gril. Ministrstvo za zunanje zadeve, koordinatorica dni LAC,
Marija Uršula Geršak, Filozofska fakulteta UL,
dr. Maja Šabec, Filozofska fakulteta UL,
Javier Viveros, založba Rosalba (Paragvaj),
dr. Barbara Pregelj, založba Malinc (Slovenija),
Bogdan Batič, Predstavništvo EU v Paragvaju.
Ključne besede: slovenska književnost, paragvajska književnost, mladinska književnost, prevajanje, projekti, kulturno posredništvo
Objavljeno v RUNG: 12.05.2021; Ogledov: 2290; Prenosov: 17
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1910. Knjige na prtu2021, druge monografije in druga zaključena dela Opis: Katere knjige so se danes znašle na prtu? Kaj jih povezuje?
Listali smo po Gorili na luni grške pisateljice Eleni Katsama, ki jo je prevedla Klarisa Jovanović, slikanici Telovadec Nikolaj prežene tolovaja (besedilo Klarisa Jovanović, ilustracije Štefan Turk) in knjigi Pravljica, pogrni se, ki jo je napisala Klarisa Jovaović, ilustriral pa Štefan Turk.
Prvi dve knjigi je izdala založba Malinc, tretjo pa Založništvo Tržaškega tiska. Z obema ustvarjalcema sta klepetali urednici na teh založbah, Barbara Pregelj in Alina Carli, ki je pogovor tudi moderirala.
Ključne besede: prevajanje, slovenska mladinska književnost, Malinc
Objavljeno v RUNG: 12.05.2021; Ogledov: 1952; Prenosov: 11
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