On Formation Mechanism of Pd–Ir Bimetallic Nanoparticles Through Thermal Decomposition of [Pd (NH3) 4][IrCl6]
Full article
| Общее |
Language:
Английский,
Genre:
Full article,
Status:
Published,
Source type:
Original
|
| Journal |
Journal of Nanoparticle Research
ISSN: 1388-0764
, E-ISSN: 1572-896X
|
| Output data |
Year: 2013,
Volume: 15,
Number: 10,
Article number
: 1994,
Pages count
: 15
DOI:
10.1007/s11051-013-1994-6
|
| Tags |
Double complex salt, In situ XAFS, In situ XPS, Pd-Ir nanoparticles, Thermal decomposition |
| Authors |
Asanova Tatyana I.
1
,
Asanov Igor P.
1
,
Kim Min-Gyu
2
,
Gerasimov Evgeny Yu.
3
,
Zadesenets Andrey V.
1
,
Plyusnin Pavel E.
1
,
Korenev Sergey V.
1
|
| Affiliations |
| 1 |
Nikolaev Institute of Inorganic Chemistry SB RAS, 630090 Novosibirsk, Russia
|
| 2 |
Beamline Research Division, Pohang University of Science and Technology, Pohang 790-784, Republic of Korea
|
| 3 |
Boreskov Institute of Catalysis SB RAS, Novosibirsk 630090, Russia
|
|
Funding (1)
|
1
|
Russian Foundation for Basic Research
|
12-02-00354
|
The formation mechanism of Pd–Ir nanoparticles during thermal decomposition of double complex salt [Pd(NH3)4][IrCl6] has been studied by in situ X-ray absorption (XAFS) and photoelectron (XPS) spectroscopies. The changes in the structure of the Pd and Ir closest to the surroundings and chemical states of Pd, Ir, Cl, and N atoms were traced in the range from room temperature to 420 °C in inert atmosphere. It was established that the thermal decomposition process is carried out in 5 steps. The Pd–Ir nanoparticles are formed in pyramidal/rounded Pd-rich (10–200 nm) and dendrite Ir-rich (10–50 nm) solid solutions. A d charge depletion at Ir site and a gain at Pd, as well as the intra-atomic charge redistribution between the outer d and s and p electrons of both Ir and Pd in Pd–Ir nanoparticles, were found to occur.