Ceria-Zirconia Nanoparticles Doped with La or Gd: Effect of the Doping Cation on the Real Structure | Sciact - CRIS-система Института катализа

Ceria-Zirconia Nanoparticles Doped with La or Gd: Effect of the Doping Cation on the Real Structure Научная публикация

Конференция

2006 E-MRS Fall Meeting. Symposium C - Doped Nanopowders: Synthesis, Characterisation, Applications
04-08 сент. 2006 , Warsaw

Сборник

Doped Nanopowders
Сборник, 2007. 292 c. ISBN 9783908451389.

Журнал

Diffusion and Defect Data Pt.B: Solid State Phenomena (Дальнейшее наименование: Solid State Phenomena)
ISSN: 1012-0394

Вых. Данные

Год: 2007, Том: 128, Страницы: 81-88 Страниц : 8 DOI: 10.4028/www.scientific.net/SSP.128.81

Ключевые слова

Doped zirconia-ceria, EXAFS, Nanoparticles, Raman, Real structure, SIMS, Surface composition, XPS, XRD

Авторы

Sadykov Vladislav A. ¹ , Kriventsov Vladimir V. ¹ , Moroz Ella M. ¹ , Borchert Yulia V. ² , Zyuzin Dmitri A. ¹ , Kolʹko Vera P. ¹ , Kuznetsova Tatyana G. ¹ , Ivanov Vyacheslav P. ¹ , Trukhan Sergei N. ¹ , Boronin Andrei I. ¹ , Pazhetnov Egor M. ¹ , Mezentseva Natalya V. ¹ , Burgina Elena B. ¹ , Ross Julian R.H. ³

Организации

1	Boreskov Institute of Catalysis SB RAS
2	University of Bremen
3	University of Limerick

Информация о финансировании (4)

1	International Association for the Promotion of Co-operation with Scientists from the New Independent States of the Former Soviet Union	05-1000005-7663
2	Российский фонд фундаментальных исследований	05-03-34761
3	Сибирское отделение Российской академии наук	95
4	Сибирское отделение Российской академии наук	116-4.15

The real structure of nanocrystalline CeO2-ZrO2 (Ce:Zr=1:1) systems prepared via the polymerized polyester precursor (Pechini) route and doped with La3+ or Gd3+ cations, up to 30 at.%, was studied by X-ray powder diffraction, EXAFS and Raman spectroscopy and the surface features characterized by XPS and SIMS. Undoped CeO2-ZrO2 system revealed nanoscale heterogeneity, perhaps due to the co-existence of Zr- or Ce-enriched domains. With large La3+ dopant the system remains bi-phasic within the studied ranges of composition, incorporation of the smaller Gd3+ cation stabilizes the single-phase solid solution. For both systems, the increase of dopant content was accompanied by a decline of domain size and an increase of the average lattice parameter of fluorite-like phases. Depletion of the surface layer by smaller Zr4+ cations was observed, while the surface content of a doping cation is either, close to that in the bulk (La) or below it (Gd). Such a spatial distribution of components results in some ordering of cations within the lattice. It is reflected in different modes of rearrangement of oxygen coordination polyhedra with the Gd or La content (distances and coordination numbers by EXAFS), and specificity of XRD patterns not conforming to a simple model with statistical distribution of oxygen vacancies.

Sadykov V.A. , Kriventsov V.V. , Moroz E.M. , Borchert Y.V. , Zyuzin D.A. , Kolʹko V.P. , Kuznetsova T.G. , Ivanov V.P. , Trukhan S.N. , Boronin A.I. , Pazhetnov E.M. , Mezentseva N.V. , Burgina E.B. , Ross J.R.H.
Ceria-Zirconia Nanoparticles Doped with La or Gd: Effect of the Doping Cation on the Real Structure
В сборнике Doped Nanopowders. 2007. – C.81-88. – ISBN 9783908451389. DOI: 10.4028/www.scientific.net/SSP.128.81 WOS Scopus Scopus РИНЦ CAPlusCA OpenAlex

Web of science:	WOS:000246957600011
Scopus:	2-s2.0-37549007235 \| 2-s2.0-84891985920
РИНЦ:	44948430
Chemical Abstracts:	2007:653686
Chemical Abstracts (print):	148:267498
OpenAlex:	W2043840230

БД	Цитирований
Web of science	21
Scopus	21 4
РИНЦ	24
OpenAlex	22