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Znanost na cesti- Materiali brez katerih si ne predstavljamo modernega življenja
Blaž Belec, unpublished conference contribution

Found in: osebi
Keywords: materiali
Published: 05.07.2021; Views: 725; Downloads: 0
.pdf Fulltext (661,90 KB)

Plastic Waste Precursor-Derived Fluorescent Carbon and Construction of Ternary FCs@CuO@TiO2 Hybrid Photocatalyst for Hydrogen Production and Sensing Application
Ming Fang, Matjaž Valant, Sandra Gardonio, Akansha Metha, Rayees Ahmad Rather, Blaž Belec, 2022, original scientific article

Abstract: 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.
Found in: osebi
Keywords: plastic waste, fluorescent carbo, sensing of metal ions, photocatalytic hydrogen production
Published: 25.02.2022; Views: 287; Downloads: 7
.pdf Fulltext (5,98 MB)

Characterization of materials
Blaž Belec, invited lecture at foreign university

Found in: osebi
Keywords: materials characterization
Published: 28.02.2022; Views: 263; Downloads: 0
.pdf Fulltext (760,97 KB)

Magnetic materials
Blaž Belec, invited lecture at foreign university

Found in: osebi
Keywords: magnetic materials, nanomaterials, permanent magnets
Published: 28.02.2022; Views: 262; Downloads: 0
.pdf Fulltext (760,97 KB)

Synthesis and characterization of inorganic anisotropic nanoparticles
Belec Blaž, invited lecture at foreign university

Found in: osebi
Keywords: Nanoparticles anisotropic particles magnetic nanocompoistes topological insulator
Published: 05.11.2018; Views: 2148; Downloads: 0
.pdf Fulltext (97,20 KB)

Hydrothermal synthesis of Bi [sub] 2 Se [sub] 3 platelets
Blaž Belec, Sandra Gardonio, Mattia Fanetti, Matjaž Valant, 2018, published scientific conference contribution abstract

Found in: osebi
Published: 12.09.2018; Views: 2042; Downloads: 0
.pdf Fulltext (2,10 MB)

Nevidni, a vendar vseprisotni
Katja Željan, 2021, interview

Found in: osebi
Keywords: nanoznanost, nanotehnologija, nanodelci, elektronski mikroskopi
Published: 04.03.2021; Views: 977; Downloads: 0

Strokovno poročanje
Blaž Belec, Saša Novak, 2021, unpublished conference contribution

Found in: osebi
Keywords: strokovno poročanje, članek, poster
Published: 20.09.2021; Views: 524; Downloads: 0
.pdf Fulltext (277,85 KB)

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