Development and Performance of a PANI@NiMnO₃ Nanocomposite for Enhanced Supercapacitors and Photocatalytic Applications

ACS Applied Bio Materials, Journal Year: 2024, Volume and Issue: 7(11), P. 7256 - 7268

Published: Oct. 15, 2024

Conductive polymers are gaining considerable attention as a potential material for supercapacitor electrodes due to their favorable properties. Among these, polyaniline (PANI) stands out cost-effective and easy synthesize, making it promising candidate improving energy storage applications. This study presents the synthesis of hybrid composite consisting PANI NiMnO3 (NMO) perovskite using chemical oxidative polymerization method. The morphology structure were analyzed by scanning electron microscopy (SEM) X-ray diffraction (XRD), respectively. XRD results showed that addition NMO transformed amorphous into semicrystalline form, leading enhanced conductivity. SEM images revealed more uniform compact structure, with distributed unevenly within polymer matrix. Optical analysis indicated reduction in band gap PANI@NMO reached 2.5 eV. N2 adsorption–desorption measurements confirmed an increase surface area pore volume. photocatalytic activity nanocomposite was tested degrading methylene blue (MB) dye under UV/visible light. high efficiency, 87.75% MB after 125 min irradiation compared counter parts. Additionally, electrochemical tests demonstrated improved performance crystallinity, increased area, reduced electron–hole recombination rate. These suggest has great use supercapacitors photocatalysis.

Language: Английский

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High-brightness Bi3+ activated Gd2GeO5 blue phosphor for white light-emitting diodes: Synthesis, characterization, and thermal stability

Ceramics International, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Language: Английский

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Exploring Quantum Confinement and Photoluminescence in NiO@W2C Composite Hybrid Nanostructures for Advanced Photocatalytic Applications

Optical Materials, Journal Year: 2025, Volume and Issue: unknown, P. 116848 - 116848

Published: Feb. 1, 2025

Language: Английский

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Exploring Cinnabar: A Natural Resource for Self‐Powered Electrochemical Photodetector Application

ChemistrySelect, Journal Year: 2025, Volume and Issue: 10(10)

Published: March 1, 2025

Abstract This study investigates cinnabar (HgS) as a material for self‐powered electrochemical photodetection, addressing the challenges of high‐power consumption and inefficient charge transfer in conventional photodetectors. Current photodetector technologies often rely on external biasing, which limits their energy efficiency applicability remote sensing. In contrast, this work demonstrates that cinnabar‐based devices exhibit functionality, eliminating need power sources. Characterization techniques, such X‐ray diffraction optical response measurements reveal high crystallinity, hexagonal crystal structure, UV–visible absorption with 2 eV band gap making strong light‐harvesting material. Photoluminescence analysis shows near‐white light emission, enhancing its potential Thermogravimetric highlights phase transitions from α HgS to β HgS, indicating thermal stability crucial long‐term device performance. Electrochemical tests including cyclic voltammetry, confirm efficient is essential photodetection. Notably, photodetectors operation optimal photocurrent at 0 V bias, demonstrating rapid response, responsivity, enhanced stability. These results position promising energy‐efficient, next generation photodetection technologies, applications imaging, sensing, communication.

Language: Английский

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Bi3+ doped Sr3Y2(BO3)4 phosphors for full-spectrum WLEDs and temperature sensing

Ceramics International, Journal Year: 2025, Volume and Issue: unknown

Published: March 1, 2025

Language: Английский

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Photoluminescence Behavior of Sm³⁺‐Doped YPO₄ Phosphors for Solid‐State Lighting

Luminescence, Journal Year: 2025, Volume and Issue: 40(5)

Published: May 1, 2025

ABSTRACT Phosphors emitting orange light under ultraviolet (UV) excitation are crucial for enhancing the performance of white light–emitting diodes. In this study, we investigate photoluminescence properties Sm 3+ ‐doped yttrium orthophosphate (YPO 4 ) phosphors synthesized using coprecipitation method. X‐ray diffraction and Fourier‐transform infrared spectroscopy were used to examine structure vibrational phosphors. By analyzing diffuse reflectance spectra Kubelka–Munk theory, optical bandgap was determined be 4.03 eV, corresponding UV region. Photoluminescence spectra, obtained 406‐nm excitation, showed emission at 602 nm, attributable G 5/2 → 6 H 7/2 transition ions. Dipole–dipole interactions responsible concentration‐quenching effect, investigated Dexter's hypothesis. Photometric colorimetric investigations performed explore behavior The calculated CIE coordinates confirmed in region, photometric revealed that phosphor exhibited emissions illumination. Overall, study provides valuable insights into YPO doped with ions, which essential assessing their suitability potential applications advanced photonic devices.

Language: Английский

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Efficient Photocatalytic Degradation of Ibuprofen from Aquatic Waste Using a Microwave Synthesized MoS₂@Cs₃Bi₂Br₉ Nanocomposite

Langmuir, Journal Year: 2025, Volume and Issue: unknown

Published: May 13, 2025

The persistent presence of pharmaceutical contaminants such as ibuprofen (IBF) in aquatic ecosystems poses significant environmental and health risks, conventional wastewater treatments often fail to eliminate these recalcitrant compounds. Herein, a novel MoS2@Cs3Bi2Br9 heterojunction photocatalyst was synthesized via sol-gel microwave methods address this challenge. Comprehensive characterization (XRD, FTIR, SEM, EDX, UV-vis) confirmed the structure composite optical properties, revealing reduced bandgap 3.04 eV (vs pristine Cs3Bi2Br9) due type II with staggered band alignment. This configuration enabled efficient charge separation, photogenerated electrons migrated from conduction (CB) Cs3Bi2Br9 MoS2 (-0.3 eV), while holes transferred inversely, suppressing recombination enhancing redox activity. Under optimized conditions (20 mg/L IBF, pH 6.0, visible light, 0.1% H2O2), 5% achieved 96.77% degradation efficiency within 3 h, outperforming individual catalysts (61% for MoS2-sol-gel, 76% MoS2-microwave, 69% Cs3Bi2Br9). energy bands facilitate electron transfer hole migration reverse direction, amplifying hydroxyl radical (•OH) generation. Low-dose H2O2 (0.1%) acted an scavenger boost •OH production, excess (1%) promoted recombination, reducing efficiency. exhibited exceptional reusability, retaining >90% activity over five cycles H2O2-assisted regeneration. work underscores potential sustainable, high-performance degrading pollutants, offering viable strategy mitigate emerging water systems.

Language: Английский

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Europium Doped SrSnO₃ Perovskite: Structural, Spectroscopic, and Luminescent Characterization for Advanced Lighting Technologies and Beyond

Energy & Fuels, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 4, 2024

Language: Английский

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