Photocatalytic activity of SrGd2O4 down and up-convertor systems
Апстракт
Issues with air and water pollution have become a worldwide problem. Photocatalysis is a technique that holds promise for resolving these urgent issues due to its sustainability, affordability, and environmental friendliness. Recently, anti-Stokes and Stokes luminescence materials have been identified as potentially efficient candidates for photocatalysis exploitation. Under irradiation, doping different Ln3+ ions in an inorganic host will induce designable down and up-conversion emissions beginning in the UV and extending to the NIR region. This investigation will examine the photocatalytic application of the chosen samples. All samples were successfully prepared via sol-gel assisted combustion method. X-ray Powder Diffraction pattern proved that all samples crystallize as a pure orthorhombic phase of SrGd2O4. Scanning and transmission electron microscopy was used for morphology characterization and it revealed the existence of porous agglomerated round-shaped particles favorable for ...photocatalytic application. Energy Dispersive X-ray Spectroscopy showed the presence of dopant ions and even distribution of all constituting elements. Under simulated solar light irradiation, the photocatalytic characteristics of down-convertors were investigated in the photocatalytic degradation of organic dye methyl orange (MO). During the experiment, a UV/Vis spectrometer was utilized to measure a drop in MO concentration in water solutions. Aliquots of the working solutions were taken at precise time intervals, and the results show that the dye breakdown rate was successful after 4 hours. Methylene blue (MB), as a test pollutant, was used to investigate its photocatalytic efficiency under irradiation of simulated sunlight of up-conversion samples. The obtained results were encouraging because more than 50% of the starting dye concentration was mineralized after 4 hours of exposure to the simulated Sun irradiation.
Извор:
Advanced Ceramics and Application :11th Serbian Ceramic Society Conference : program and the book of abstracts; September 18-20, 2023; Belgrade, 2023, 64-Издавач:
- Belgrade : Serbian Ceramic Society
Напомена:
- XI Serbian Ceramic Society Conference - Advanced Ceramics and Application : new frontiers in multifunctional material science and processing : program and the book of abstracts; September 18-20, 2023; Belgrade
Колекције
Институција/група
VinčaTY - CONF AU - Stamenković, Tijana AU - Lojpur, Vesna PY - 2023 UR - https://vinar.vin.bg.ac.rs/handle/123456789/11644 AB - Issues with air and water pollution have become a worldwide problem. Photocatalysis is a technique that holds promise for resolving these urgent issues due to its sustainability, affordability, and environmental friendliness. Recently, anti-Stokes and Stokes luminescence materials have been identified as potentially efficient candidates for photocatalysis exploitation. Under irradiation, doping different Ln3+ ions in an inorganic host will induce designable down and up-conversion emissions beginning in the UV and extending to the NIR region. This investigation will examine the photocatalytic application of the chosen samples. All samples were successfully prepared via sol-gel assisted combustion method. X-ray Powder Diffraction pattern proved that all samples crystallize as a pure orthorhombic phase of SrGd2O4. Scanning and transmission electron microscopy was used for morphology characterization and it revealed the existence of porous agglomerated round-shaped particles favorable for photocatalytic application. Energy Dispersive X-ray Spectroscopy showed the presence of dopant ions and even distribution of all constituting elements. Under simulated solar light irradiation, the photocatalytic characteristics of down-convertors were investigated in the photocatalytic degradation of organic dye methyl orange (MO). During the experiment, a UV/Vis spectrometer was utilized to measure a drop in MO concentration in water solutions. Aliquots of the working solutions were taken at precise time intervals, and the results show that the dye breakdown rate was successful after 4 hours. Methylene blue (MB), as a test pollutant, was used to investigate its photocatalytic efficiency under irradiation of simulated sunlight of up-conversion samples. The obtained results were encouraging because more than 50% of the starting dye concentration was mineralized after 4 hours of exposure to the simulated Sun irradiation. PB - Belgrade : Serbian Ceramic Society C3 - Advanced Ceramics and Application :11th Serbian Ceramic Society Conference : program and the book of abstracts; September 18-20, 2023; Belgrade T1 - Photocatalytic activity of SrGd2O4 down and up-convertor systems SP - 64 UR - https://hdl.handle.net/21.15107/rcub_vinar_11644 ER -
@conference{ author = "Stamenković, Tijana and Lojpur, Vesna", year = "2023", abstract = "Issues with air and water pollution have become a worldwide problem. Photocatalysis is a technique that holds promise for resolving these urgent issues due to its sustainability, affordability, and environmental friendliness. Recently, anti-Stokes and Stokes luminescence materials have been identified as potentially efficient candidates for photocatalysis exploitation. Under irradiation, doping different Ln3+ ions in an inorganic host will induce designable down and up-conversion emissions beginning in the UV and extending to the NIR region. This investigation will examine the photocatalytic application of the chosen samples. All samples were successfully prepared via sol-gel assisted combustion method. X-ray Powder Diffraction pattern proved that all samples crystallize as a pure orthorhombic phase of SrGd2O4. Scanning and transmission electron microscopy was used for morphology characterization and it revealed the existence of porous agglomerated round-shaped particles favorable for photocatalytic application. Energy Dispersive X-ray Spectroscopy showed the presence of dopant ions and even distribution of all constituting elements. Under simulated solar light irradiation, the photocatalytic characteristics of down-convertors were investigated in the photocatalytic degradation of organic dye methyl orange (MO). During the experiment, a UV/Vis spectrometer was utilized to measure a drop in MO concentration in water solutions. Aliquots of the working solutions were taken at precise time intervals, and the results show that the dye breakdown rate was successful after 4 hours. Methylene blue (MB), as a test pollutant, was used to investigate its photocatalytic efficiency under irradiation of simulated sunlight of up-conversion samples. The obtained results were encouraging because more than 50% of the starting dye concentration was mineralized after 4 hours of exposure to the simulated Sun irradiation.", publisher = "Belgrade : Serbian Ceramic Society", journal = "Advanced Ceramics and Application :11th Serbian Ceramic Society Conference : program and the book of abstracts; September 18-20, 2023; Belgrade", title = "Photocatalytic activity of SrGd2O4 down and up-convertor systems", pages = "64", url = "https://hdl.handle.net/21.15107/rcub_vinar_11644" }
Stamenković, T.,& Lojpur, V.. (2023). Photocatalytic activity of SrGd2O4 down and up-convertor systems. in Advanced Ceramics and Application :11th Serbian Ceramic Society Conference : program and the book of abstracts; September 18-20, 2023; Belgrade Belgrade : Serbian Ceramic Society., 64. https://hdl.handle.net/21.15107/rcub_vinar_11644
Stamenković T, Lojpur V. Photocatalytic activity of SrGd2O4 down and up-convertor systems. in Advanced Ceramics and Application :11th Serbian Ceramic Society Conference : program and the book of abstracts; September 18-20, 2023; Belgrade. 2023;:64. https://hdl.handle.net/21.15107/rcub_vinar_11644 .
Stamenković, Tijana, Lojpur, Vesna, "Photocatalytic activity of SrGd2O4 down and up-convertor systems" in Advanced Ceramics and Application :11th Serbian Ceramic Society Conference : program and the book of abstracts; September 18-20, 2023; Belgrade (2023):64, https://hdl.handle.net/21.15107/rcub_vinar_11644 .