Unusual aliovalent Cd doped γ‐Bi₂MoO₆ nanomaterial for efficient photocatalytic degradation of sulfamethoxazole and rhodamine B under visible light irradiation

Carbon Neutralization, Journal Year: 2023, Volume and Issue: 2(6), P. 646 - 660

Published: Oct. 31, 2023

Abstract Due to γ‐Bi 2 MoO 6 (BMO) has attracted considerable attention because of its unique layered perovskite structure and excellent electrical conductivity. However, the easy recombination electron–hole pairs limits practical application. To address this issue, we successfully prepared aliovalent Cd 2+ doped BMO (Cd‐BMO) by using a simple hydrothermal method for degradation sulfamethoxazole (SMZ) Rhodamine B (RhB). The result found that efficiency Cd‐BMO is significantly higher than BMO, despite an increase in bandgap after introduction . superior 8% Cd‐BMO, with smaller particle size larger specific surface area, can be attributed fast charge separation efficiency, low transfer resistance, rate pair recombination. Repeated ion spillover experiments prove shows good stability environmental protection. Theoretical simulation demonstrates offers electrons system due decreased binding energy BMO. sample provide suitable electric band edge generating dominant active radicals during degradation. This work not only provides potential candidate but also sheds light on design photocatalysts.

Language: Английский

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Lignin Nanoparticles: Transforming Environmental Remediation

Nanomaterials, Journal Year: 2024, Volume and Issue: 14(18), P. 1541 - 1541

Published: Sept. 23, 2024

In the face of escalating environmental challenges driven by human activities, quest for innovative solutions to counter pollution, contamination, and ecological degradation has gained paramount importance. Traditional approaches remediation often fall short in addressing complexity scale modern-day problems. As industries transition towards sustainable paradigms, exploration novel materials technologies becomes crucial. Lignin nanoparticles have emerged as a promising avenue this context. Once considered mere byproduct, lignin’s unique properties versatile functional groups propelled it forefront research. This review paper delves into resurgence lignin from an perspective, examining its pivotal role carbon cycling potential address various challenges. The extensively discusses synthesis, properties, applications diverse fields such water purification soil remediation. Moreover, highlights associated with nanoparticle deployment, ranging Eco toxicological assessments scalability issues. Multidisciplinary collaboration integration research findings real-world are emphasized critical factors unlocking transformative nanoparticles. Ultimately, underscores beacons hope pursuit cleaner, healthier, more harmonious coexistence between humanity nature through strategies.

Language: Английский

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Theoretical Prediction and Property Evaluation of New Two-Dimensional Materials: BeN4C8 and MgN4C8 Sheets

Materials Chemistry and Physics, Journal Year: 2025, Volume and Issue: unknown, P. 130951 - 130951

Published: April 1, 2025

Language: Английский

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First-Principles Study of Electronic Structure and Optical Properties of Ni-Doped Bi4O5Br2

Coatings, Journal Year: 2024, Volume and Issue: 14(1), P. 67 - 67

Published: Jan. 3, 2024

In this study, we comprehensively explored the electronic structure and optical properties of Ni-doped Bi4O5Br2 through first-principles computational calculations. By calculating its band characteristics, investigated impact Ni doping on photocatalytic performance Bi4O5Br2. The results indicated that significantly altered Bi4O5Br2, leading to a reduction in gap width. for undoped was 2.151 eV, whereas system exhibited smaller gap, directly indicating enhanced visible light absorption capacity facilitating effective separation photo-generated electron–hole pairs. Through analysis 2D charge density maps, observed changes chemical bonding induced by doping. shortening Ni-O bonds suggested increased bond strength, consistent with cell volume. These findings provide theoretical foundation understanding mechanisms behind hydrogen production offering valuable insights design optimization highly efficient materials.

Language: Английский

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First-Principles Calculations on Electronic, Optical, and Phonon Properties of γ-Bi₂MoO₆

ACS Omega, Journal Year: 2024, Volume and Issue: unknown

Published: Aug. 14, 2024

The wide band gap γ-Bi2MoO6 (BMO) has tremendous potential in emergent solar harvesting applications. Here we present a combined experimental–first-principles density functional theory (DFT) approach to probe physical properties relevant the light sensitivity of BMO like dynamic and structural stability, Raman infrared absorption modes, value nature (i.e., direct or indirect), dielectric constant, optical absorption, etc. We solvothermally synthesized Pca21 phase pure (≳3 eV) for two different pH values 7 9. parameters were correlated with stability derived from elastic tensor simulations. desired dynamical at T = 0 K was established phonon vibrational structure using finite difference-based supercell approach. DFT-based modes states (DOS) reliably reproduced experimental absorption. electronic DOS calculated Heyd–Scuseria–Ernzerhof HSE06 van der Waals (vdW) relativistic spin–orbit coupling (SOC) corrections produced good agreement obtained diffuse reflectance spectroscopy (DRS). complex constant HSE06+SOC+vdW closely resembled DRS-derived BMO. shows ∼43% photocatalytic efficiency degrading methylene blue dye under 75 min illumination. This DFT-experimental may provide better understanding

Language: Английский

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Photocatalytic Degradation of Sulfamethoxazole by Cd/Er-Doped Bi2MoO6

Coatings, Journal Year: 2024, Volume and Issue: 14(9), P. 1112 - 1112

Published: Sept. 2, 2024

Bi2MoO6 (BMO) is a typical bismuth-based semiconductor material, and its unique Aurivillius structure provides broad space for electron delocalization. In this study, new type of bismuth molybdate Cd/Er-BMO photocatalytic material was prepared by co-doping Er3+ Cd2+, the performance degradation sulfamethoxazole (SMZ) systematically studied. The research results showed that efficiency SMZ significantly improved after doping Cd2+ ions, reflecting synergistic catalytic effect co-doping. doped with 6% Cd had highest (93.89%) under visible light irradiation. revealed excellent stability reusability in repeated experiments. addition, smaller particle size larger specific surface area, which conducive to improving generation photogenerated electron-hole pairs reducing recombination rate, enhancing photocatalysis material. This study not only an effective photocatalyst degrading environmental pollutants such as SMZ, but also important scientific basis ideas future development efficient stable materials.

Language: Английский

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Composite Electromagnetic Scattering Characteristics of Actual Terrain and Moving Rockets

International Journal of Antennas and Propagation, Journal Year: 2024, Volume and Issue: 2024, P. 1 - 14

Published: May 21, 2024

This research involved studying the characteristics of composite electromagnetic scattering from a rocket moving above actual terrain using finite-difference time-domain method. The angular distribution curve coefficient was obtained, and influences factors such as angle incidence, frequency incident wave, content moisture in soil, dielectric constant rocket-shell material, height rocket, undulation on were investigated. Results show that oscillates with increases direction mirror reflection. It also decreases increasing altitude while it soil materials. Although influence different undulations is noticeable, follows no fixed pattern.

Language: Английский

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