Synthesis and Thermal Stability of Immiscible Metal (Au–Rh, Au–Ir, Au–Ir–Rh and Pd-Rh) Nanoalloys | Sciact - CRIS-system of Boreskov Institute of Catalysis

Synthesis and Thermal Stability of Immiscible Metal (Au–Rh, Au–Ir, Au–Ir–Rh and Pd-Rh) Nanoalloys Conference Abstracts

Conference

19th Annual Conference YUCOMAT 2017
04-08 Sep 2017 , Herceg Novi

Source

Programme and The Book of Abstracts / Nineteenth Annual Conference YUCOMAT 2017, Herceg Novi, September 4-8, 2017
Compilation, Materials Research Society of Serbia. Belgrade.2017. 124 c. ISBN 978-86-919111-2-6.

Output data

Year: 2017, Article number : O.S.I.6, Pages count : 1

Authors

Shubin Yury ¹ , Plyusnin Pavel ¹ , Korenev Sergey ¹ , Vedyagin Aleksey ²

Affiliations

1	Nikolaev Institute of Inorganic Chemistry SB RAS, Novosibirsk, Russia
2	Boreskov Institute of Catalysis SB RAS, Novosibirsk, Russia

Funding (1)

Russian Science Foundation

16-13-10192

The report highlights synthetic approach to the preparation of nanoalloys of immiscible metals based on thermolysis of single-source precursors. We successfully prepared nanoalloys in the systems of Au–Ir, Au–Rh, Au–Ir–Rh and Pd-Rh with large bulk miscibility gaps, in one-run reactions under thermal decomposition of specially synthesised double-complex salts [AuEn2][Ir(NO2)6], [AuEn2][Ir(NO2)6]х[Rh(NO2)6]1–х, [AuEn2][Rh(NO2)6], [Rh(NH3)5Cl][Pd(NO2)4], [PdEn2]3[Rh(NO2)6]2·2.67H2O and [RhEn3]2[Pd(NO2)4]3. The TEM microscopy observations show that the nanoalloy structures are composed of well-dispersed aggregates of crystalline domains with a mean size of 5±3 nm. EDX analysis and XRD measurements confirm the formation of AuIr, AuRh, AuIrxRh1-x, PdxRh1-x metastable solid solutions. In situ high-temperature synchrotron XRD was used to study the formation mechanism of nanoalloys. The obtained metastable nanoalloys exhibit essential thermal stability. Exposure to 180 ºC for 30 h does not cause any dealloying process. The work has been supported by grant of Russian Science Foundation (project №16-13-10192).

Shubin Y. , Plyusnin P. , Korenev S. , Vedyagin A.
Synthesis and Thermal Stability of Immiscible Metal (Au–Rh, Au–Ir, Au–Ir–Rh and Pd-Rh) Nanoalloys
In compilation Programme and The Book of Abstracts / Nineteenth Annual Conference YUCOMAT 2017, Herceg Novi, September 4-8, 2017. – Materials Research Society of Serbia., 2017. – C.44. – ISBN 978-86-919111-2-6.

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