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Naslov:Plastic Waste Precursor-Derived Fluorescent Carbon and Construction of Ternary FCs@CuO@TiO2 Hybrid Photocatalyst for Hydrogen Production and Sensing Application
Avtorji:ID Metha, Akansha, FunGlass, A. Dubček University of Trenčín, Študentská 2, 911 50 Trenčín, Slovakia (Avtor)
ID Rather, Rayees Ahmad, College of Material Science and Engineering, Shenzhen University, Shenzhen 518060, China 3 College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China (Avtor)
ID Belec, Blaž, Materials Research Laboratory, University of Nova Gorica, Vipavska 11c, 5270 Ajdovscina, Slovenia (Avtor)
ID Gardonio, Sandra, Materials Research Laboratory, University of Nova Gorica, Vipavska 11c, 5270 Ajdovscina, Slovenia (Avtor)
ID Fang, Ming, College of Material Science and Engineering, Shenzhen University, Shenzhen 518060, China (Avtor)
ID Valant, Matjaž, Materials Research Laboratory, University of Nova Gorica, Vipavska 11c, 5270 Ajdovscina, Slovenia (Avtor)
Datoteke:.pdf energies-15-01734.pdf (5,98 MB)
MD5: 3DF6A138781D72ED228C886FCB1CDA6A
 
Jezik:Angleški jezik
Vrsta gradiva:Delo ni kategorizirano
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:UNG - Univerza v Novi Gorici
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
Leto izida:2022
Št. strani:1-16
Številčenje:15, 5
PID:20.500.12556/RUNG-7203 Novo okno
COBISS.SI-ID:98942723 Novo okno
DOI:https://doi.org/10.3390/en15051734 Novo okno
NUK URN:URN:SI:UNG:REP:KO8P6RIK
Datum objave v RUNG:25.02.2022
Število ogledov:1486
Število prenosov:41
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Gradivo je del revije

Naslov:Energies
ISSN:1996-1073
COBISS.SI-ID:518046745 Novo okno

Licence

Licenca:CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
Povezava:http://creativecommons.org/licenses/by/4.0/deed.sl
Opis:To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.
Začetek licenciranja:25.02.2022

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