Published: Oct. 10, 2024
Language: Английский
Frontiers in Chemical Engineering, Journal Year: 2024, Volume and Issue: 6
Published: Feb. 2, 2024
The emerging field of using titanium dioxide (TiO 2 )-based photosensitizers for enhancing photocatalytic removal thiazine dyes such as methylene blue (MB) from water has long been recognized its exceptional properties, making it an attractive material environmental remediation and energy conversion. However, wide bandgap limits responsiveness to visible light. As such, the utilization TiO -based dyes, presents a promising avenue diverse applications. In addressing dual challenges pollution harnessing sustainable sources, this review focuses on their subsequent application materials. Thiazine ubiquitous in industrial effluents, pose concerns due persistence potential toxicity. Conversely, innovative approach involves employing materials photocatalysts, utilizing unique properties enhance light absorption. Studies have shown that beyond conventional role colorants, they can serve effective when coupled with . This tandem not only facilitates elimination MB, but also augments improvement performance synergy between dye sensitizers enhances overall efficiency processes like degradation splitting. Dye sensitizers, acting absorbers, efficiently transfer , thereby promoting electron generating reactive oxygen species (ROS). These ROS, turn, initiate chemical reactions, rendering valuable applications wastewater treatment, solar conversion, remediation. is crucial acknowledge drawbacks associated including toxicity non-biodegradability. Consequently, careful consideration must be given disposal. Therefore, manuscript delves into comprehensive exploration photosensitizers, shedding efficacy various removal.
Language: Английский
Citations
26
Chemosensors, Journal Year: 2025, Volume and Issue: 13(4), P. 121 - 121
Published: April 1, 2025
Notwithstanding the success of SnO2 as a fundamental material for gas sensing, it has often been criticized its cross-sensitivity and high operational temperatures. Therefore, in this study, RF-sputtered thin films were subjected to modification process through doping with rare earth element, dysprosium (Dy), subsequently deposited onto two different types substrates: alumina glass substrates. All underwent comprehensive series characterizations aimed at ensuring their suitability NO2 sensors. The levels ranged from 1 7 wt.% increments 2% (wt.%). X-ray patterns showed that all exhibited tetragonal rutile structure SnO2. optical band gap energy (Eg) increased Dy doping, while Urbach decreased doping. Field emission scanning electron microscopy (FESEM) revealed highly compacted grainy surfaces roughness substrate films, which also higher resistivity Energy-dispersive spectroscopy (EDX) analyses confirmed stoichiometry both films. Gas sensing tests conducted operating temperatures, where highest response nitrogen dioxide, over 42%, was recorded dopant level 250 °C. Moreover, sensor’s selectivity toward dioxide traces evaluated by introducing interfering gases concentrations. However, sensors significant responses when operated room temperature. Also, we have demonstrated stability is related temperature ratio. Hence, detailed discussion gas-sensing mechanisms undertaken gain deeper insight into sensitivity Dy-doped layer.
Language: Английский
Citations
0
Published: Jan. 1, 2025
Language: Английский
Citations
0
Scientific Reports, Journal Year: 2025, Volume and Issue: 15(1)
Published: May 9, 2025
This paper investigates the photocatalytic performance of ZnO-SnO2 nanocomposites deposited using Spray Pyrolysis technique, with varying percentages tin oxide (20, 60, and 80%) on glass substrates at 350 °C. Comprehensive characterization samples was carried out X-ray diffraction (XRD), Scanning Electron Microscopy (SEM), Atomic Force (AFM), UV-Vis spectroscopy to analyze their structural, morphological, optical properties. The XRD analysis confirmed hexagonal structure zinc tetragonal phase in nanocomposites. average crystallite size found decrease an increase percentage oxide. spectra demonstrated that band gap energy nanocomposite increased from 3.29 3.64 eV as amount Sn increased. Urbach decreases reflecting improvement structural electronic quality material, fewer defects better crystallinity. Additionally, SEM results reveal a transition surface morphology increasing content, shifting smooth, compact highly aggregated particle surface, highest thickness (740 nm) observed 80% SnO2. Remarkably, exhibited superior activity, successfully degrading 91% methylene blue solution within 180 min under UV irradiation. Moreover, stability reusability sample were through repeated cycles. use chemical synthesis technique for elaboration Sn:Zn mixed light catalyzer which, is well suited large bandgap materials, optimizes this work by providing contact area facilitating interaction between photocatalyst target molecules. These findings highlight its potential effective environmental applications, specifically photocatalysis pollution control protection. collectively suggest nanocomposites, spray method, represent promising candidates advancing technologies.
Language: Английский
Citations
0
Journal of Sol-Gel Science and Technology, Journal Year: 2024, Volume and Issue: 110(3), P. 690 - 704
Published: May 9, 2024
Language: Английский
Citations
3
Journal of Alloys and Compounds, Journal Year: 2024, Volume and Issue: 1009, P. 176977 - 176977
Published: Oct. 11, 2024
Language: Английский
Citations
3
Desalination and Water Treatment, Journal Year: 2024, Volume and Issue: 318, P. 100380 - 100380
Published: April 1, 2024
Industrial wastewater containing hazardous organic pollutants is an emerging global issue demands efficient treatment methods. The semiconductor-mediated photodegradation has emerged as a promising solution, which gaining increased interest. This study focuses on photocatalytic degradation of Acridine Orange using thin film catalyst composed PVC immobilized with nano SnO2. efficiency the prepared was evaluated through various experiments, and operational parameters such irradiation source, initial dye concentration, pH, co-occurring ions were investigated. demonstrated superior removal under UV radiation at 254 nm. impact pH revealed maximal 11. Moreover, explored influence ions, indicating their quenching effect process. Kinetic analysis concentration-dependent rate aligns kinetic model Langmuir−Hinshelwood. reusability SnO2-thin photocatalyst sustained activity over multiple cycles. findings highlight potential SnO2-PVC for removal, emphasizing importance optimizing enhanced efficiency.
Language: Английский
Citations
1
Ceramics International, Journal Year: 2024, Volume and Issue: 50(21), P. 40678 - 40689
Published: May 15, 2024
Language: Английский
Citations
1
Deleted Journal, Journal Year: 2024, Volume and Issue: 3, P. 100006 - 100006
Published: June 4, 2024
Rare earth ions show interesting optical, magnetic and electrical properties such have high technological applications as energy-saving lighting devices, luminescent lamps, displays, lasers, amplifiers. Among these rare ions, the trivalent dysprosium ion has a special feature of producing white emission because their characteristics color perception. The use Dysprosium (Dy3+) doped materials increased across various sectors low cost, appropriate CCT, thermally chemical stability quantum efficiency, leading to surge in related research. In this study, large number research papers been studied conduct bibliometric analysis Dy-doped visualized through bibliometrix-R package biblioshiny application. An examination Web Science Scopus databases from 1961 2024 identified 4,653 documents having an annual growth rate 5.66%, written by 8551 authors with average 29.37 citations per document, international co-authorship 13.8% focusing on Dy3+ materials. data shows notable rise scientific publications since 2007. area research, China significantly contributes volume (~ 90.13%) form collaborative networks. According Bradford's law publication numbers, "Journal Luminescence" Alloys Compounds" are primary core sources field. Furthermore, JILIN University Nakhon Pathom Rajabhat Thailand lead published articles topic. search strategy retrieved total 6950 keywords. Word cloud tree map keywords that utilized dopants host matrices improve photoluminescence Thematic evolution mapping indicate energy transfer must be explored
Language: Английский
Citations
1
Catalysts, Journal Year: 2024, Volume and Issue: 14(6), P. 347 - 347
Published: May 28, 2024
Gd/Fe-SnO2 nanopowders as novel photocatalysts for the active removal of Rose Bengal dye and methyl parathion pesticide were synthesized with a low-cost coprecipitation route. The X-ray diffraction analysis SnO2, Sn0.96Gd0.02Fe0.02O2 Sn0.94Gd0.02Fe0.04O2 proved formation tetragonal phase tin oxide average crystallite sizes in range 13–18 nm. Fourier transform infrared (FTIR) spectra all samples displayed characteristic absorption bands SnO2. nanopowder pure SnO2 sample, seen its transmission electron microscope (TEM) image, contains spherical-like particles variable sizes. TEM images powders revealed synthesis fine spherical nanoparticles. Based on images, particle size pure, (Gd, 2 wt% Fe) 4 codoped was estimated to be 14, 10 12 nm, respectively. After addition structure, band gap energy reduced from 3.4 eV 2.88 2.82 eV, Significantly, nanocatalyst exhibited high efficiency 98 96% after activation by sunlight 35 48 min, Furthermore, this catalyst has shown perfect mineralization well stability properties treatment pesticide. These results suggest suitability agriculture industrial effluent under light energy.
Language: Английский
Citations
0