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481
Degradation of bisphenol A using a MOF@COF-modified polyacrylonitrile ultrafiltration membrane
Published 2025-08-01“…The composite was successfully synthesised using solvothermal synthesis and structurally analysed via XRD and FTIR, confirming crystal structure and covalent bonding between MIL-101-NH₂ and TpMA via the adsorption bands detected at 765 and 1247-1257 cm−1 (N-H wagging band and C-N stretching bands). UV–vis diffuse reflectance analysis revealed a narrowed band gap upon hybridisation (0.92 eV) signifying enhanced photocatalytic activity, while photoluminescence spectra indicated reduced electron–hole recombination. …”
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482
Improved photocatalytic performance of Ce substituted lanthanum ferrite nanoparticles for the degradation of harmful antibiotic tetracycline from water
Published 2025-06-01“…The samples were identified as visible-light-driven photocatalysts, with the reduction of optical band gap from 2.24 to 1.88 eV with increasing Ce concentration. …”
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483
Structural, magnetic, and optical characteristics of undoped and chromium, iron, cobalt, copper, and zinc doped nickel oxide nanopowders
Published 2025-01-01“…Band gap values were estimated based on diffuse reflectance spectroscopy data through Tauc plot analysis, yielding a range from 2.77 to 3.46 eV. …”
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484
Magnetically separable ternary CdFe2O4/Fe2O3/CeO2 nanocomposites for visible-light photodegradation of eosin Y
Published 2025-09-01“…Based on DRS analysis, the band gap of the three-component CdFe2O4/Fe2O3/CeO2 nanocomposite was obtained to be 2.0 eV, indicating that CdFe2O4/Fe2O3/CeO2 nanostructure can act as a photocatalyst under visible light. …”
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485
Divulgação Científica em Prol da Luta Ambiental no Brasil
Published 2024-12-01“…Cet article s’intéresse au rôle du journalisme scientifique dans la diffusion de sujets environnementaux et à l’importance du journaliste en tant que communicateur scientifique. …”
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486
Impregnation of porous TiO2/ZnO into MCM-41 synthesized from coal fly ash for enhanced photocatalytic activity of TiO2/ZnO@MCM-41 composites in methylene blue removal
Published 2025-06-01“…Characterization confirmed the hexagonal mesoporous structure, uniform dispersion of TiO2/ZnO, and enhanced light absorption. Ultraviolet–Visible Diffuse Reflectance Spectroscopy (UV–Vis DRS) results revealed a band gap reduction from 3.22 eV (TZ) to 2.77 eV (TZM), improving photocatalytic activity under UV and visible light irradiation. …”
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487
Tunable properties of silver (Ag) substituted BaFe2O4 nanoparticles for photovoltaic (PV) applications
Published 2025-05-01“…The lowest energy band gap value of 1.5–1.8 eV was achieved by pristine and Ba0.7Ag0.3Fe2O4 making it eligible to operate within the ideal region of solar cell efficiency with reduced recombination losses. …”
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488
Ion toxicity in waterlogged soils: mechanisms of root response and adaptive strategies
Published 2025-08-01“…Despite progress, key gaps remain: identifying ion sensors in root tips, extrapolating findings to long-lived species, modeling multi-ion interactions under dynamic waterlogging conditions, and establishing real-time root signal monitoring systems. …”
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489
Ball milling preparation and the effect of calcination temperature on the photocatalytic performance of titanium dioxide
Published 2025-06-01“…Characterization techniques, including X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET) surface area analysis, thermogravimetric analysis (TGA), and UV–Vis spectroscopy using the diffuse reflectance mode (DRS), were employed to evaluate phase composition, surface properties, and optical band gap variations. …”
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490
Comparative analysis of the diagnostyc value of CT and MRI in the assessment of peritoneal carcinomatosis in ovarian cancer
Published 2025-03-01“…This approach makes it possible to perform a full-fledged mapping of the abdominal cavity with the calculation of the peritoneal carcinomatosis index (PCI), potentially avoiding "mute zones" resulting from technical gaps that can be observed when performing MRI in two separate blocks, according to the nomenclature of studies on anatomical areas (MRI of the abdominal cavity and pelvis).…”
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491
Preparation and First-principles Study of New Thorium-based MOX Fuel
Published 2024-10-01“…This leads to an expansion of gaps between particles, an increase in the number of pores, and ultimately a reduction in density. …”
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492
Ecofriendly synthesis of NiZnFe2O5 nanoparticle by papaya leaf extract for electrochemical detection of ascorbic acid in orange juice and pharmaceuticals
Published 2024-12-01“…The average diameter of the nanoparticle is 47.93 nm, which was determined using the dynamic light scattering method. UV/Vis diffuse reflectance spectrum results revealed that the NiZnFe2O5 NPs band gap is 1.8 eV. …”
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493
Performance of Domestically Made Surface Solar Radiation Observation System at Zhongshan Station, Antarctica
Published 2023-05-01“…However, the performance of instrumental systems is not sufficiently evaluated or analyzed, especially in the polar regions where harsh condition and large seasonal variations of solar elevation causes dramatic variation of surface solar irradiance. To fill this gap, the performance of the domestically made solar radiation observation systems at Zhongshan Station, Antarctica in 2017, including global solar radiation (GSR), direct solar radiation (DIR) and the diffuse solar radiation (DIF) measurements, is evaluated. …”
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494
Comparative transcriptomic and molecular biology analyses to explore potential immune responses to Vibrio parahaemolyticus challenge in Eriocheir sinensis
Published 2024-12-01“…To address this knowledge gap, an experiment was conducted to establish a V. parahaemolyticus infection model. …”
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495
Citrus sinensis and Musa acuminata Peel Waste Extract Mediated Synthesis of TiO2/rGO Nanocomposites for Photocatalytic Degradation of Methylene Blue under Visible Light Irradiation
Published 2022-01-01“…The average crystalline size of CS and MA peel extract template synthesized TiO2/rGO NCs was found to be in the range of 7.5–15.3 and 11.2–12.5 nm, respectively. The band gap energy was calculated to be in the range of 3.17–3.29 eV and 3.10–3.38 eV for the CS and MA mediated synthesized TiO2 NPs, respectively. …”
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496
Evolution of phase composition and luminescent characteristics of the La1-x-ySmxCayVO4-δ nanocrystalline phosphor
Published 2025-02-01“…Estimated from the diffuse reflection data the band gap values are 3.85, and 3.82, 3.75, 3.78 eV for the samples with x = 0.1, y = 0, and (x, y) = 0.05, 0.10, 0.15, respectively. …”
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497
Synthesis O-g-C<sub>3</sub>N<sub>4</sub>/TiO<sub>2</sub> rutile composite material for photocatalytic application
Published 2019-11-01“…As a result, O-g-C3N4/TiO2 photosensitivity is observed in the significant part of the visible region and the band gap of synthesized product is determined to be less than 2.4 eV versus 2.7 eV for undoped g-C3N4 or g-C3N4/TiO2. …”
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498
Comparison of Photocatalytic Activity: Impact of Hydrophilic Properties on TiO<sub>2</sub> and ZrO<sub>2</sub> Thin Films
Published 2024-12-01“…The X-ray diffraction patterns showed that the TiO<sub>2</sub> TFs had an anatase crystalline structure, unlike the ZrO<sub>2</sub> TFs, which showed a tetragonal crystalline structure that was verified by Raman spectroscopy. The band gap (BG) energies, as calculated from UV-Vis spectroscopy and diffuse reflectance spectroscopy, corresponded to 3.2 and 3.7 eV for the TiO<sub>2</sub> and ZrO<sub>2</sub> TFs, respectively. …”
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499
Influence of the phase composition of the TiO<sub>2</sub> matrix on the optical properties and morphology of deposited C<sub>3</sub>N<sub>4</sub>O<sub>x</sub> nanoparticles
Published 2020-11-01“…Using UV/Vis spectroscopy, it has been found that a redshift of long-wavelength edge of the fundamental absorption band of the spectra is observed when going from TiO2 (anatase), TiO2 (rutile), C3N4, C3N4Ox/TiO2 (anatase), C3N4Ox/TiO2 (rutile) and, then, to C3N4Ox, and the band gap decreases from 3.2, 3.0, 2.6, 2.4, 2.25 to 2.1 eV in the above sequence of materials. …”
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500
Developing consensus outcome measures in juvenile systemic sclerosis: a global survey of pediatric rheumatologists and literature review
Published 2025-05-01“…This study aims to address this gap by investigating current JSSc management practices and identifying key outcome measures that can be used to inform the development of standardized assessment tools for future clinical trials. …”
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