Synthesis of Bimetallic Nanocompositions AuxPd1-x/γ-Al2O3 for Catalytic CO Oxidation Full article
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Journal of Nanoparticle Research
ISSN: 1388-0764 , E-ISSN: 1572-896X |
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| Output data | Year: 2017, Volume: 19, Number: 11, Article number : 367, Pages count : 9 DOI: 10.1007/s11051-017-4061-x | ||||||
| Tags | Gold, Nanoalloys, Nanoparticles, Nanostructured catalysts, Palladium | ||||||
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| Affiliations |
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Funding (1)
| 1 | Russian Science Foundation | 16-13-10192 |
Abstract:
Colloidal suspensions of AuxPd1-x nanoalloys were prepared via hydrazine co-reduction of [AuCl4]− and [PdCl4]2− complex anions in aqueous solution. High molecular weight polymeric compounds polyvinylpyrrolidone (PVP), polyvinyl alcohol (PVA), and cryptoionic surfactants (AF-6 and AF-12 neonols, Triton X-100) were used as surface capping agents. Nanoparticles prepared under different experimental conditions were immobilized on γ-Al2O3 supports. The removal of the capping agents from the surface of the active particles was achieved through calcination of samples in oxidative atmosphere (air, 500 °C). This pretreatment of the catalysts significantly enhances their performance. Powder XRD, TEM, and EDX were employed to characterize the structure, size, and composition of the AuxPd1-x/γ-Al2O3 catalysts. The immobilized particles consist of uniformly mixed alloys having multi-domain face-centered cubic structure with typical crystallite size of 3–6 nm. The activity of the prepared samples was examined with temperature-programmed CO oxidation reaction (TP-CO+O2). Triton X-100 surfactant is superior in a number of parameters. Among all AuxPd1-x/γ-Al2O3 catalysts tested, the one stabilized with Triton X-100 (0.4%Au-0.2%Pd@Triton X-100) was found to have the highest activity for conversion of CO into CO2.
Cite:
Zaytsev S.Y.
, Plyusnin P.E.
, Slavinskaya E.M.
, Shubin Y.V.
Synthesis of Bimetallic Nanocompositions AuxPd1-x/γ-Al2O3 for Catalytic CO Oxidation
Journal of Nanoparticle Research. 2017. V.19. N11. 367 :1-9. DOI: 10.1007/s11051-017-4061-x WOS Scopus РИНЦ AN OpenAlex
Synthesis of Bimetallic Nanocompositions AuxPd1-x/γ-Al2O3 for Catalytic CO Oxidation
Journal of Nanoparticle Research. 2017. V.19. N11. 367 :1-9. DOI: 10.1007/s11051-017-4061-x WOS Scopus РИНЦ AN OpenAlex
Dates:
| Submitted: | Jun 7, 2017 |
| Accepted: | Oct 24, 2017 |
| Published print: | Nov 1, 2017 |
| Published online: | Nov 4, 2017 |
Identifiers:
| Web of science: | WOS:000414473400001 |
| Scopus: | 2-s2.0-85032981570 |
| Elibrary: | 31049929 |
| Chemical Abstracts: | 2017:1759235 |
| OpenAlex: | W2767056535 |