Applied Physics A, Journal Year: 2024, Volume and Issue: 130(4)
Published: March 18, 2024
Language: Английский
Scientific Reports, Journal Year: 2024, Volume and Issue: 14(1)
Published: Jan. 22, 2024
Abstract Perovskite oxide materials, specifically MgTiO 3 (MT) and Li-doped (MTxLi), were synthesized via a sol–gel method calcination at 800 °C. This study explores the impact of varying Li doping levels (x = 0, 0.01, 0.05, 0.1) on crystalline structure properties . X-ray diffraction analysis revealed well-defined rhombohedral phase. Optical diffuse reflectance measurements provided insights into energy gap values, refractive index, dielectric constant. + enhanced electrical , with notable phase transition observed 50 The investigated impedance AC conductivity under temperature frequency conditions (25–120 °C, 4 Hz to 8 MHz). Electrochemical through cyclic voltammetry electrochemical spectroscopy confirmed highly electrocatalytic for MTxLi, particularly when modified onto screen-printed electrodes. work not only advances understanding nanostructures but also highlights their significant potential direct applications, in realm storage.
Language: Английский
Citations
24
Scientific Reports, Journal Year: 2024, Volume and Issue: 14(1)
Published: Jan. 4, 2024
Abstract In this paper, we present a humidity sensing material based on nanostructured Zn (1.6 − x) Na 0.4 Cu x TiO 4 spinel to enhance optical and sensitivity performance. Nano-porous of were synthesized using sol gel reactions calcined at 700 °C. The nanostructures underwent thorough characterization through multiple techniques. X-ray diffractometry (XRD) coupled with Rietveld refinement FullProf software, transmission electron microscopy (TEM), Raman Spectroscopy, analysis employed assess various aspects the nanostructures. These techniques utilized determine phase composition, particle size distribution, chemical bonding, tunable band gap diffraction samples revealed well-defined prominent peaks, indicating highly crystalline cubic structure. lattice parameter was decreased from 8.4401 8.4212 Å increasing content 0 1.2 mol%. UV–visible diffuse reflectance spectra investigate characteristics copper-doped 1.6 . applicability Cu@NaZT in sensors evaluated ambient conditions. fabricated sensor investigated wide span (11–97%). examined demonstrates low hysteresis, excellent repeatability, fast response recovery. recovery times estimated be 20 s 6 respectively. highest achieved 200 Hz. proposed can easily electronic devices as humidity–impedance relationship is linear.
Language: Английский
Citations
13
Small, Journal Year: 2024, Volume and Issue: 20(21)
Published: Feb. 23, 2024
Abstract Surface bio‐engineering of polymeric nanoparticles (PNPs) has emerged as a cornerstone in contemporary biomedical research, presenting transformative avenue that can revolutionize diagnostics, therapies, and drug delivery systems. The approach involves integrating bioactive elements on the surfaces PNPs, aiming to provide them with functionalities enable precise, targeted, favorable interactions biological components within cellular environments. However, full potential surface bio‐engineered PNPs biomedicine is hampered by obstacles, including precise control over modifications, stability environments, lasting targeted cells or tissues. Concerns like scalability, reproducibility, long‐term safety also impede translation clinical practice. In this review, these challenges context recent breakthroughs developing surface‐biofunctionalized for various applications, from biosensing bioimaging therapeutics are discussed. Particular attention given bonding mechanisms underlie attachment moieties PNP surfaces. efficacy surface‐bioengineered critically reviewed disease detection, treatment, both vitro vivo settings. Insights into existing limitations impeding progress provided, forward‐looking discussion field's future presented. paper concludes recommendations accelerate PNPs.
Language: Английский
Citations
11
RSC Advances, Journal Year: 2024, Volume and Issue: 14(19), P. 13142 - 13156
Published: Jan. 1, 2024
In our current research, a new type of functional nanocomposites known as poly(methyl methacrylate/
Language: Английский
Citations
7
Journal of Materials Science Materials in Electronics, Journal Year: 2024, Volume and Issue: 35(21)
Published: July 1, 2024
Language: Английский
Citations
7
Physica Scripta, Journal Year: 2024, Volume and Issue: 99(7), P. 075033 - 075033
Published: June 10, 2024
Abstract This investigation involved synthesizing a nanocomposite heterostructure, Chitosan-MgO-SiO 2 @aminosilane, using the physical blending of chitosan-MgO-silica with aminosilane sol–gel technique. The prepared nanocomposites were characterized x-ray diffraction (XRD), Scanning/Transmission Electron Microscope (SEM-EDX/TEM), Fourier Transform Infrared Spectroscopy (FTIR), and optical analysis to investigate microstructural spectroscopic properties. XRD results confirmed formation orthorhombic Mg SiO 4 within fabricated system. FTIR verified interactions among chitosan, MgO-silica, aminosilane, leading development diverse functional groups, including M-O bonds, silanol-hydroxyl ions, heteropolymeric-O-M chitosan-MgO-SiO @aminosilane nanocomposite. Optical studies demonstrated that aminosilane-incorporated samples have two distinct absorption bands around 215 nm 419 nm, corresponding electronic transitions π – * (k-band) n– (R-band), respectively. band at 400 is ascribed localized surface plasmon resonance (SPR). incorporation resulted in decrease direct transition energy gap from 2.677 2.399 eV. displayed significant antimicrobial activity against pathogenic microorganisms such as Gram-positive Staphylococcus aureus , Gram-negative Pseudomonas aeruginosa fungi Candida albicans Aspergillus niger . positive response candidates them for various applications, wound dressings food packaging.
Language: Английский
Citations
4
Ionics, Journal Year: 2024, Volume and Issue: unknown
Published: June 12, 2024
Language: Английский
Citations
4
Materials Chemistry and Physics, Journal Year: 2025, Volume and Issue: unknown, P. 130530 - 130530
Published: Feb. 1, 2025
Language: Английский
Citations
0
Beni-Suef University Journal of Basic and Applied Sciences, Journal Year: 2025, Volume and Issue: 14(1)
Published: Feb. 27, 2025
Abstract In this study, we investigated the preparation, characterization, and antibacterial properties of strontium oxide (SrO) nanoparticles doped with different ratios copper (CuO) (1, 2, 3, 4 mol.%). The SrO@CuO were synthesized using sol–gel method, which is known for producing highly homogeneous pure in a versatile cost-effective manner. study investigates impact CuO on growth their dielectric properties. Several techniques including X-ray diffraction, transmission electron microscopy, FTIR, spectroscopy used to analyze morphological, crystallographic, electric nanoparticles. performed polarization at interface, energy loss (tan ε), conductivity from 0.1 Hz 20 MHz. Koop's two-layer model was suggested explain changes impedance frequency. suggests that samples contain well-directing grains detached by some insulating grain boundary. As frequency increases, decreases, interfacial goes down. This happens when dipoles stop following applied reciprocating field. effects Pseudomonas aeruginosa, Staphylococcus aureus, Bacillus subtilis also observed. showed efficacy. found concentration significantly affects structure, spectroscopic properties, efficacy results indicate are appropriate storage, recording media, microwaves, antimicrobial agents.
Language: Английский
Citations
0
RSC Advances, Journal Year: 2025, Volume and Issue: 15(14), P. 11146 - 11159
Published: Jan. 1, 2025
Nanoparticles of Dy-doped Fe 1.4 Bi 0.6 Y 0.5 Se 2.5− x ( = 0, 0.1, 0.2, 0.3) were synthesized using the sol–gel method.
Language: Английский
Citations
0