A simple two step synthetic method for di-doped crystalline mesoporous tin dioxide powder containing antimony and fluoride at ambient pressure and temperature has been developed. This approach produced materials with high surface areas and improved electrical and optoelectrical conductance. The two dopant elements; antimony and fluoride were introduced to tin dioxide by two approaches. Both approaches produced mesoporous tin dioxide with antimony and fluoride that are integrated in the framework. The structures of these materials are analyzed by powder X-ray diffraction, N sorption analysis, transmission electron microscopy, energy dispersive X-ray spectroscopy and X-ray photoelectron spectroscopy. The conductance of the materials improved by factor of 13-34 compared to undoped mesoporous tin dioxide. The effect of the di-doped elements on structure, conductance and optoelectronic properties of these materials are discussed in this paper.
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http://dx.doi.org/10.1002/open.202400096 | DOI Listing |
Nanomaterials (Basel)
December 2024
Institute for Physical and Information Technologies (ITEFI-CSIC), 28006 Madrid, Spain.
Chemical nanosensors based on nanoparticles of tin dioxide and graphene-decorated tin dioxide were developed and characterized to detect low NO concentrations. Sensitive layers were prepared by the drop casting method. SEM/EDX analyses have been used to investigate the surface morphology and the elemental composition of the sensors.
View Article and Find Full Text PDFInt J Mol Sci
November 2024
Department of Solid-State Chemistry, Saint Petersburg State University, Saint Petersburg 199034, Russia.
This paper presents the results of a study on the characteristics of semiconductor sensors based on thin SnO films modified with antimony, dysprosium, and silver impurities and dispersed double Pt/Pd catalysts deposited on the surface to detect carbon monoxide (CO). An original technology was developed, and ceramic targets were made from powders of Sn-Sb-O, Sn-Sb-Dy-O, and Sn-Sb-Dy-Ag-O systems synthesized by the sol-gel method. Films of complex composition were obtained by RF magnetron sputtering of the corresponding targets, followed by technological annealing at various temperatures.
View Article and Find Full Text PDFSTAR Protoc
December 2024
Institute für High-Frequency and Semiconductor-System Technologies, Technische Universität Berlin, Einsteinufer 25, 10587 Berlin, Germany. Electronic address:
RSC Adv
December 2024
Beijing Key Laboratory of Clothing Materials R&D and Assessment, Beijing Engineering Research Center of Textile Nanofiber, Beijing Institute of Fashion Technology Beijing 100029 P. R. China
A sensitive compound was successfully obtained by coating polyaniline (PANI) on the surface of composite nanoparticles consisting of Au-loaded tin dioxide, named as PANI-Au-SnO, using an polymerization method. NH sensors in thin-film and fiber-shaped forms were prepared by inkjet printing and impregnation methods, respectively, based on PANI-Au-SnO. The response characteristics of these NH sensors developed from composite sensitive materials were investigated in detail.
View Article and Find Full Text PDFAnal Chim Acta
January 2025
Key Laboratory of Chemical Biology & Traditional Chinese Medicine Research (Ministry of Education, China), College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha, 410081, PR China. Electronic address:
Human immunoglobulin (HIgG) has gained recognition as a crucial biomarker diagnosing and treating various diseases, particularly in identifying elevated serum levels in conditions like measles and pneumococcal disease. Traditional detection methods, however, are often hindered by inefficiencies, high costs, and potential inaccuracies, underscoring the urgent need for more sensitive, efficient, accurate, and self-calibration methods for HIgG. Here, a novel ZnInS/SnO composites was synthesized, featuring uniformly dispersed SnO nanoparticles on the flower-like ZnInS structure, resulting in a type II heterojunction that promotes the separation and transfer of photogenerated carriers.
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