Study of surface effects and catalytic properties of selected Ni-based bimetallic nanoparticles by Knudsen effusion mass spectrometry
Source abstract
Abstract
Abstract 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.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: nanoparticles nucleation surface interactions · Catalytic Processes in Materials Science · Advanced Chemical Physics Studies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (36)
Show source-provided references
1. Nanoalloys: from theory to applications of alloy clusters and nanoparticles10.1021/cr040090g ↗
2. Bimetallic Cu-Ni nanoparticles of varying composition (CuNi3, CuNi, Cu3Ni)10.1016/j.colsurfa.2008.08.007 ↗
3. Study of structures and thermodynamics of CuNi nanoalloys using a new DFT-fitted atomistic potential10.1039/C5CP00215J ↗
4. Lee, Structural changes of Au–Cu bimetallic catalysts in CO oxidation: in situ XRD, EPR, XANES, and FT-IR characterizations10.1016/j.jcat.2010.12.016 ↗
5. Bimetallic Ag–Au/SiO2 catalysts: formation, structure and synergistic activity in glucose oxidation10.1016/j.apcata.2014.04.027 ↗
6. Excellent catalytic performance, thermal stability, and water resistance of 3DOM Mn2O3-supported Au–Pd alloy nanoparticles for the complete oxidation of toluene10.1016/j.apcata.2015.09.026 ↗
7. Pt-CoOx nanoparticles supported on ETS-10 for preferential oxidation of CO reaction10.1016/j.apcata.2016.09.018 ↗
8. Catalytic characteristics of AgCu bimetallic nanoparticles in the oxygen reduction reaction10.1002/cssc.201201001 ↗
9. Ag-Cu colloid synthesis: bimetallic nanoparticle characterisation and thermal treatment10.1155/2014/638964 ↗
10. Cytotoxicity of organic surface rating agents used for nanoparticles synthesis and stability10.1016/j.tiv.2015.01.017 ↗
11. CO hydrogenation to methanol on Cu-Ni catalysts: theory and experiment10.1016/j.jcat.2012.06.004 ↗
12. Hydrogen production by water-gas shift reaction over bimetallic Cu-Ni catalysts supported on La-doped mesoporous ceria10.1016/j.apcata.2010.08.003 ↗
13. Hydrogen production through water-gas shift reaction over supported Cu, Ni and Cu-Ni nanoparticle catalysts prepared from metal colloids10.1002/cctc.201100435 ↗
14. Carbon capacious Ni-Cu-Al2O3 catalysts for high-temperature methane decomposition10.1016/S0926-860X(03)00080-2 ↗
15. Electro-catalytic oxidation of methanol on a Ni-Cu alloy in alkaline medium10.1007/s10800-006-9155-6 ↗
16. Modification of catalytic properties over carbon supported Ru-Cu and Ni-Cu bimetallics - I. Functional selectivities in citral and cinnamaldehyde hydrogenation10.1016/j.apcata.2005.10.061 ↗
17. Efficient and versatile CuNi alloy nanocatalysts for the highly selective hydrogenation of furfural10.1016/j.apcatb.2016.10.038 ↗
18. Near-monodisperse Ni−Cu bimetallic nanocrystals of variable composition: controlled synthesis and catalytic activity for H2 generation10.1021/jp805788x ↗
19. Magneto-optical modulation on colloid Cu−Ni nanocomposite10.1021/jp511736f ↗
20. Multiply twinned AgNi alloy nanoparticles as highly active catalyst for multiple reduction and degradation reactions10.1021/am503913y ↗
21. Facile synthesis of near-monodisperse Ag@Ni core–shell nanoparticles and their application for catalytic generation of hydrogen10.1088/0957-4484/22/19/195604 ↗
22. Structural and morphological characterization of gold–nickel electrocatalyst synthesized by taking advantage of the AuNi phase separation mechanism10.1016/j.jallcom.2009.11.111 ↗
23. Investigation of AuNi/C anode catalyst for direct metanol fuel cells10.1016/j.ijhydene.2013.07.102 ↗
24. Thermodynamic re-evaluation of the Cu–Ni system10.1016/0364-5916(92)90022-P ↗
25. Thermodynamic assessment of the Au–Ni system10.1016/j.calphad.2005.09.004 ↗
26. Thermodynamic assessments of the Ag-Ni binary and Ag-Cu-Ni ternary systems10.1007/s11664-007-0315-1 ↗
27. Heat-induced spinodal decomposition of Ag–Cu nanoparticles10.1039/C5CP00198F ↗
28. Cu–Ni nanoalloy phase diagram – prediction and experiment10.1016/j.calphad.2013.11.004 ↗
29. Au-Ni nanoparticles: phase diagram prediction, synthesis, characterization, and thermal stability10.1016/j.calphad.2017.05.002 ↗
30. J. Pinkas, V. Vykoukal, A. Kroupa, Metal alloy nanoparticles: synthesis, characterization, and size-dependent phase diagram calculations, in: Proceedings of the International Conference Advances in Functional Materials, University of California, Los Angeles, USA, 2017, p. 555.
31. Oleylamine in nanoparticle synthesis10.1021/cm4000476 ↗
32. Synthesis and characterization of hydrophobic, organically-soluble gold nanocrystals functionalized with primary amines10.1021/la960445u ↗
33. Gatan, 2015. 〈http://www.gatan.com/products/tem-analysis/gatan-microscopy-suite-software〉.
34. F. Zelenka, P. Broz, A. Styskalik, D. Skoda, O. Zobac, Study of surface effects on Ag-Cu nanoparticles by Knudsen effusion mass spectrometry, in: Proceedings of the NANOCON 2014, 6th International Conference, 2015, pp. 820–825.
35. Combination of thermal analysis and Knudsen effusion mass spectrometry for study of metal materials on macro- and nano-scale10.1149/04601.0069ecst ↗
36. Specially-adapted type of Netzsch STA Instrument as a tool for Knudsen effusion mass spectrometry10.1016/j.ijms.2015.04.002 ↗