Ultrasensitive and selective Cr-doped ZnO thin films synthesized via spray pyrolysis technique for detection of ammonia gas

Applied Physics A, Journal Year: 2024, Volume and Issue: 130(5)

Published: April 4, 2024

Language: Английский

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Nanostructured zinc oxide and selenide-based materials for gas sensing application: review

Journal of Materials Science Materials in Electronics, Journal Year: 2025, Volume and Issue: 36(5)

Published: Feb. 1, 2025

Language: Английский

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Synthesis of Mg doped ZnO cauli-flower nanostructures using chemical spray and its investigation for ammonia gas sensing at room temperature

Talanta, Journal Year: 2024, Volume and Issue: 285, P. 127403 - 127403

Published: Dec. 18, 2024

Language: Английский

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Impact of ZnO nanorods vs nanotrees morphology on NO2 gas sensor performance

Journal of Materials Science Materials in Electronics, Journal Year: 2025, Volume and Issue: 36(3)

Published: Jan. 1, 2025

Language: Английский

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Dual-Functional Green Facile synthesis of graphene doped CuO-SnO2:F sprayed thin film as an efficient photocatalyst and ammonia gas sensor at low concentration.

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

Published: Feb. 1, 2025

Language: Английский

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High-performance formaldehyde sensor based on Al-doped ZnO nanorods prepared by chemical bath deposition

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

Published: April 1, 2025

Language: Английский

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Tailoring Al-Doped ZnO Nanoparticles via Scalable High-Energy Ball Milling–Solid-State Reaction: Structural, Optical, and Dielectric Insights for Light-Activated Antimicrobial Defense Against Medical Device Pathogens

Crystals, Journal Year: 2025, Volume and Issue: 15(5), P. 397 - 397

Published: April 24, 2025

This study reports the synthesis of aluminum-doped ZnO nanoparticles (Al-ZnO NPs) via a top-down mechanochemical solid-state reaction (SSR) approach using high-energy ball milling (HEBM) as rapid, controllable, and efficient method. Al-ZnO samples were characterized X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FT-IR), transmission electron microscopy (TEM), scanning (SEM), energy-dispersive (EDS), UV-Vis diffuse reflectance spectroscopy. Significantly, band gap decreased by 0.215 eV when transitioning from pure to 9 wt.% Al-doped (Al-ZnO9). TEM analysis showed that after 4 h at 1000 rpm, particle size was reduced 59 nm, exhibiting spherical morphology crucial for enhanced bioactivity. The antimicrobial properties NPs evaluated well diffusion method against various pathogenic microorganisms, with particular focus on Staph. aureus ATCC 29213 epidermidis 12228, given their clinical significance common pathogens in infections related medical implants prosthetics. Al-ZnO9 demonstrated superior antibacterial performance, producing inhibition zones 13 mm 15 epidermidis, respectively. Moreover, exposure visible light further amplified activity. research underscores potential scalable production NPs, presenting promising solution addressing linked implanted devices.

Language: Английский

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Synthesis and Characterization of Flower-Like Cobalt-Doped ZnO Nanostructures for Ammonia Sensing Applications

ECS Journal of Solid State Science and Technology, Journal Year: 2024, Volume and Issue: 13(2), P. 027006 - 027006

Published: Feb. 1, 2024

The future trajectory of gas sensor development focuses mainly on two key aspects: minimizing power consumption and enhancing the capability to detect hazardous gases at lower concentrations under ambient conditions. present study used co-precipitation method explore synthesis zinc oxide cobalt-doped ZnO sensors, encompassing a range cobalt from 1 wt% 4 wt%. synthesized samples undergo comprehensive analysis evaluate their structural, morphological, optical, gas-sensing properties. X-ray Diffraction (XRD) revealed hexagonal Wurtzite structure, crystallite size decreased 16.92 15.39 nm. Energy-Dispersive spectroscopy (EDX) Fourier-Transform Infrared (FTIR) Spectroscopy collectively affirmed presence cobalt. Scanning Electron Microscopy (SEM) was analyze morphological characteristics. Tauc-plot determine optical bandgap via diffuse reflectance spectroscopy. As doping increased, band gap increased 3.18 3.23 eV. Further, Atomic Force (AFM) Brunauer–Emmett–Teller (BET) were assess surface topography pore distribution. AFM measurements indicated roughness 435 700 BET mesoporous properties, with area 18.657 21.962 m 2 /g sizes varying 3.67 3.72 Subsequently, capabilities Co-doped sensors examined for various volatile organic compounds (VOCs) room temperature. experimental results demonstrated excellent performance in detecting NH 3 precisely. 4% exhibited fast response recovery time 21 20 s towards ppm .

Language: Английский

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Effects of Al doping on structural, optical, morphological, and low-concentration CO₂ gas sensing properties of ZnO nanoparticles synthesized by sol-gel method

Physica Scripta, Journal Year: 2024, Volume and Issue: 99(12), P. 125929 - 125929

Published: Oct. 9, 2024

Abstract This work examines the morphological, structural, optical, and gas-sensing characteristics of ZnO thin films doped with Al that were created by sol-gel spin coating technique. The films, varying aluminum concentrations (0%, 2%, 5%), characterized using XRD, UV-visible spectroscopy, FE-SEM to assess their crystallinity, band gap, surface morphology. XRD analysis confirmed incorporation into lattice without forming secondary phases, while spectroscopy revealed an increase in transmittance gap higher doping. images showed a transition from agglomerated grains smoother surfaces increased content. Gas sensing performance was evaluated low-concentration CO 2 as target gas. results demonstrated doping significantly enhances response, 5% Al-doped exhibiting optimal sensitivity due carrier concentration improved interaction. These findings suggest are promising candidates for efficient gas sensors, combining enhanced structural optical properties superior capabilities.

Language: Английский

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Sustainable synthesis, amplified efficacy: doped ZnO nanostructures driving photocatalytic excellence for wastewater remediation- A comprehensive review

Chemistry and Ecology, Journal Year: 2024, Volume and Issue: unknown, P. 1 - 37

Published: Nov. 12, 2024

This comprehensive review explores synthesis methodologies for ZnO nanostructures, emphasising green and doping techniques. Researchers, driven by environmental sustainability, have utilised various bio-reducing agents in synthesising both pristine doped nanostructures. The study delves into the involvement of these structures photo-assisted degradation organic pollutants, showcasing pivotal role green-synthesised its derivatives photocatalysis. meticulously details alterations induced dopants parent structure, highlighting their potential to enhance dye efficiency. Mechanisms underlying approach are elucidated, exploring interplay between surface reactions, photo energy, charge carriers, energy band structures. Additionally, synergistic effects on nanostructures when exposed light outlined, impacting pollutants such as dyes, antibiotic effluents, solvents, Polycyclic Aromatic Hydrocarbons (PAHs).

Language: Английский

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