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Study of surface effects and catalytic properties of selected Ni-based bimetallic nanoparticles by Knudsen effusion mass spectrometry
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SYSNO ASEP 0509639 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Study of surface effects and catalytic properties of selected Ni-based bimetallic nanoparticles by Knudsen effusion mass spectrometry Author(s) Brož, P. (CZ)
Hejduková, M. (CZ)
Vykoukal, V. (CZ)
Zelenka, F. (CZ)
Sopoušek, J. (CZ)
Buršík, Jiří (UFM-A) RID, ORCID
Zobač, Ondřej (UFM-A) ORCIDNumber of authors 7 Source Title Calphad - Computer Coupling of Phase Diagrams and Thermochemistry. - : Elsevier - ISSN 0364-5916
Roč. 64, MAR (2019), s. 334-341Number of pages 8 s. Language eng - English Country GB - United Kingdom Keywords bimetallic nanoparticles ; Cu-Ni ; Ag-Ni Subject RIV BJ - Thermodynamics OECD category Thermodynamics R&D Projects GA17-15405S GA ČR - Czech Science Foundation (CSF) LQ1601 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Method of publishing Limited access Institutional support UFM-A - RVO:68081723 UT WOS 000460842600036 EID SCOPUS 85058241126 DOI 10.1016/j.calphad.2019.01.013 Annotation Surface effects and catalytic properties of CuNi, AgNi and AuNi bimetallic nanoparticles having diameter 10-30 nm were studied by Knudsen effusion mass spectrometry. The nanoalloys were prepared by solvothermal synthesis using oleylamine. Gradual removing of the organic substances, present on the nanoparticles from the synthesis, accompanied by their oxidation was observed during slow heating. The nanoparticle catalytic activity leading to the oxidation of the organic surface layer to CO2 in final step depends on the selected element in the Ni-based nanoalloy. The CuNi system shows the highest catalytic activity while the AuNi system the smallest one. As demonstrated, the KEMS method can be applied with advantage as a progressive tool for the evaluation of the oxidation catalytic activity of metal nanoparticles. The surface effects and the catalytic properties are discussed in view of our previous studies. Workplace Institute of Physics of Materials Contact Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Year of Publishing 2020 Electronic address https://www.sciencedirect.com/science/article/pii/S036459161830244X?via%3Dihub
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