|
|
|
|
| LEADER |
01000caa a22002652 4500 |
| 001 |
NLM248592599 |
| 003 |
DE-627 |
| 005 |
20250218113941.0 |
| 007 |
cr uuu---uuuuu |
| 008 |
231224s2015 xx |||||o 00| ||eng c |
| 024 |
7 |
|
|a 10.1107/S1600577515003434
|2 doi
|
| 028 |
5 |
2 |
|a pubmed25n0828.xml
|
| 035 |
|
|
|a (DE-627)NLM248592599
|
| 035 |
|
|
|a (NLM)25931091
|
| 040 |
|
|
|a DE-627
|b ger
|c DE-627
|e rakwb
|
| 041 |
|
|
|a eng
|
| 100 |
1 |
|
|a Boita, Jocenir
|e verfasserin
|4 aut
|
| 245 |
1 |
2 |
|a A dispenser-reactor apparatus applied for in situ XAS monitoring of Pt nanoparticle formation
|
| 264 |
|
1 |
|c 2015
|
| 336 |
|
|
|a Text
|b txt
|2 rdacontent
|
| 337 |
|
|
|a ƒaComputermedien
|b c
|2 rdamedia
|
| 338 |
|
|
|a ƒa Online-Ressource
|b cr
|2 rdacarrier
|
| 500 |
|
|
|a Date Completed 14.08.2015
|
| 500 |
|
|
|a Date Revised 18.04.2016
|
| 500 |
|
|
|a published: Print-Electronic
|
| 500 |
|
|
|a Citation Status PubMed-not-MEDLINE
|
| 520 |
|
|
|a In situ time-resolved X-ray absorption spectroscopy (XAS) measurements collected at the Pt L3-edge during the synthesis of Pt nanoparticles (NPs) in aqueous solution are reported. A specially designed dispenser-reactor apparatus allowed for monitoring changes in the XAS spectra from the earliest moments of Pt ions in solution until the formation of metallic nanoparticles with a mean diameter of 4.9 ± 1.1 nm. By monitoring the changes in the local chemical environment of the Pt atoms in real time, it was possible to observe that the NPs formation kinetics involved two stages: a reduction-nucleation burst followed by a slow growth and stabilization of NPs. Subsequently, the synthesized Pt NPs were supported on activated carbon and characterized by synchrotron-radiation-excited X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD) and extended X-ray absorption fine structure (EXAFS). The supported Pt NPs remained in the metallic chemical state and with a reduced size, presenting slight lattice parameter contraction in comparison with the bulk Pt values
|
| 650 |
|
4 |
|a Journal Article
|
| 650 |
|
4 |
|a Research Support, Non-U.S. Gov't
|
| 650 |
|
4 |
|a DXAS
|
| 650 |
|
4 |
|a in situ XAS
|
| 650 |
|
4 |
|a instrumentation
|
| 650 |
|
4 |
|a nanoparticles
|
| 650 |
|
4 |
|a platinum
|
| 650 |
|
4 |
|a synthesis
|
| 700 |
1 |
|
|a Castegnaro, Marcus Vinicius
|e verfasserin
|4 aut
|
| 700 |
1 |
|
|a Alves, Maria do Carmo Martins
|e verfasserin
|4 aut
|
| 700 |
1 |
|
|a Morais, Jonder
|e verfasserin
|4 aut
|
| 773 |
0 |
8 |
|i Enthalten in
|t Journal of synchrotron radiation
|d 1994
|g 22(2015), 3 vom: 30. Mai, Seite 736-44
|w (DE-627)NLM09824129X
|x 1600-5775
|7 nnns
|
| 773 |
1 |
8 |
|g volume:22
|g year:2015
|g number:3
|g day:30
|g month:05
|g pages:736-44
|
| 856 |
4 |
0 |
|u http://dx.doi.org/10.1107/S1600577515003434
|3 Volltext
|
| 912 |
|
|
|a GBV_USEFLAG_A
|
| 912 |
|
|
|a SYSFLAG_A
|
| 912 |
|
|
|a GBV_NLM
|
| 912 |
|
|
|a GBV_ILN_40
|
| 912 |
|
|
|a GBV_ILN_350
|
| 912 |
|
|
|a GBV_ILN_2005
|
| 951 |
|
|
|a AR
|
| 952 |
|
|
|d 22
|j 2015
|e 3
|b 30
|c 05
|h 736-44
|