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Annealing Effect on Linear and Ultrafast Nonlinear Optical Properties of BiTe Thin Films.
Materials (Basel)
December 2024
Department of Optical Science and Engineering, Shanghai Ultra-Precision Optical Manufacturing Engineering Center, Fudan University, Shanghai 200433, China.
In recent years, the fabrication of materials with large nonlinear optical coefficients and the investigation of methods to enhance nonlinear optical performance have been in the spotlight. Herein, the bismuth telluride (BiTe) thin films were prepared by radio-frequency magnetron sputtering and annealed in vacuum at various temperatures. The structural and optical properties were characterized and analyzed using X-ray diffraction, scanning electron microscopy, X-ray photoelectron spectroscopy, spectroscopic ellipsometry, and UV/VIS/NIR spectrophotometry.
View Article and Find Full Text PDFHigh-Performance Thermoelectric Composite of BiTe Nanosheets and Carbon Aerogel for Harvesting of Environmental Electromagnetic Energy.
ACS Nano
January 2025
State Key Laboratory of Materials Processing and Die & Mould Technology, and School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, Hubei, P. R. China.
Intensifying the severity of electromagnetic (EM) pollution in the environment represents a significant threat to human health and results in considerable energy wastage. Here, we provide a strategy for electricity generation from heat generated by electromagnetic wave radiation captured from the surrounding environment that can reduce the level of electromagnetic pollution while alleviating the energy crisis. We prepared a porous, elastomeric, and lightweight BiTe/carbon aerogel (CN@BiTe) by a simple strategy of induced in situ growth of BiTe nanosheets with three-dimensional (3D) carbon structure, realizing the coupling of electromagnetic wave absorption (EMA) and thermoelectric (TE) properties.
View Article and Find Full Text PDFBond Confinement-Dependent Peierls Distortion in Epitaxially Grown Bismuth Films.
Adv Mater
December 2024
Institute of Physics (IA), RWTH Aachen University, Sommerfeldstraße 14, 52074, Aachen, Germany.
A systematic study of the impact of film thickness on the properties of thin Bi films is presented. To this end, epitaxial films of high quality have been grown on a Si (111) substrate with thicknesses ranging from 1.9 to 29.
View Article and Find Full Text PDFPreconcentration of bismuth using nickel hydroxide nanoflower from water samples and determination by FAAS.
Environ Monit Assess
December 2024
Chemistry Department, Faculty of Art and Science, Yıldız Technical University, 34220, Istanbul, Türkiye.
In this study, a preconcentration strategy based on Ni(OH) nanoflowers (NFs) was developed for the extraction/separation of bismuth ions from environmental water samples before the determination by flame atomic absorption spectrometry (FAAS). The homogeneous coprecipitation method was employed for the synthesis of the flower-shaped Ni(OH) and used as an adsorbent for the preconcentration of bismuth. The extraction variables were determined by a univariate optimization strategy to obtain maximum extraction performance.
View Article and Find Full Text PDFIn-situ designed Bi metal @ defective BiOSO to enhance photocatalytic NO removal via boosted directional interfacial charge transfer.
J Hazard Mater
December 2024
Yangtze Delta Region Institute (Huzhou), University of Electronic Science and Technology of China, Huzhou 313000, China; School of Resources and Environment, University of Electronic Science and Technology of China, Chengdu 611731, China. Electronic address:
Photocatalytic technology provides a new approach for the harmless treatment of low concentration NO in the atmosphere. The development of high-performance semiconductor materials to improve the light absorption efficiency and the separation efficiency of photogenerated carriers is the focus of the research. Bismuth oxybismuth sulfate (BiOSO) shows significant potential for photocatalytic NO purification due to its unique electronic and layered structure.
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