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Direct analysis of heavy metal elements in liquid water using femtosecond laser-induced breakdown spectroscopy for high-sensitivity detection.
Talanta
December 2024
Institute of Atomic and Molecular Physics, Jilin University, Changchun, 130012, China. Electronic address:
Laser-induced breakdown spectroscopy (LIBS) is a rapidly evolving in-situ multi-element analysis technique that has significantly advanced the field of liquid analysis. This study employs a femtosecond laser for quantitative analysis of heavy metals in flowing liquids, exploring its detection sensitivity and accuracy. Femtosecond pulsed laser excitation of water in a dynamic environment generates plasma while effectively preventing liquid splashing.
View Article and Find Full Text PDFActuation performance of MXenes in response to moisture gradients: A systematic investigation.
Talanta
December 2024
Key Laboratory of Physics and Technology for Advanced Batteries (Ministry of Education), College of Physics, Jilin University, Changchun, 130012, PR China. Electronic address:
Humidity-responsive actuators (HRA) have garnered significant interest across various domains. Since 2020, MXene have been extensively studied for their potential in HRA, demonstrating remarkable performance. Thus far, more than 70 MXene materials have been found.
View Article and Find Full Text PDFEco-friendly synthesis of CuO/g-C₃N₄/Fe₃O₄ nanocomposites for efficient magnetic micro-solid phase extraction (M-μ-SPE) of trace cadmium from food and water samples.
Food Chem
December 2024
Department of Chemistry, Faculty of Sciences, Erciyes University, Kayseri, Turkiye; Technology Research and Application Center (TAUM), Erciyes University, Kayseri, Turkiye; Turkish Academy of Sciences (TUBA), Cankaya, Ankara, Turkiye; Khazar University Nano BioAnalytical Chemistry Center (NBAC), Mahsati Str 41, AZ-1096 Baku, Azerbaijan.
In this study, a green synthesis method for synthesizing a novel nanocomposite (CuO/g-C₃N₄/Fe₃O₄) utilizing renewable dragon fruit peels as the primary raw material was developed. Hydrothermal and thermal decomposition techniques were used for nanocomposite synthesis. This nanocomposite was subsequently employed for the separation and preconcentration of Cd(II) from various environments, including food and water samples.
View Article and Find Full Text PDFInvestigating the Current-Carrying Friction Mechanism of n-Type and p-Type Two-Dimensional TMD under a Positive Electric Field.
ACS Appl Mater Interfaces
January 2025
State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China.
Nanofriction plays an important role in the performance and lifetime of n-type or p-type TMD-based semiconductor nanodevices. However, the mechanism of nanofriction in n-type and p-type TMD semiconductors under an electric field is still blurry. In this paper, monolayers of n-MoSe and p-WSe materials were prepared by chemical vapor deposition (CVD), and their nanofriction behavior under positive electric field was investigated.
View Article and Find Full Text PDFSc-doped GeTe thin films prepared by radio-frequency magnetron sputtering.
Sci Rep
January 2025
Department of Graphic Arts and Photophysics, Faculty of Chemical Technology, University of Pardubice, Studentská 573, Pardubice, 532 10, Czech Republic.
Radio frequency magnetron co-sputtering method employing GeTe and Sc targets was exploited for the deposition of Sc doped GeTe thin films. Different characterization techniques (scanning electron microscopy with energy-dispersive X-ray analysis, X-ray diffraction, atomic force microscopy, sheet resistance temperature-dependent measurements, variable angle spectroscopic ellipsometry, and laser ablation time-of-flight mass spectrometry) were used to evaluate the properties of as-deposited (amorphous) and annealed (crystalline) Ge-Te-Sc thin films. Prepared amorphous thin films have GeTe, GeTeSc, GeTeSc, GeTeSc and GeTeSc chemical composition.
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