Artigo De: orcid, scopus, cienciavitae

Preparation of Yb2O3 submicron-and nano-materials via electrospinning

Ceramics International

Henriques, M. S.; Ferreira, A. C.; Goncalves, A. P. — 2015 — Elsevier

Informações chave

Autores:

Henriques, M. S.; Ferreira, A. C. (Ana Cristina Gomes Ferreira da Silva Parreira); Cruz, A.; Ferreira, L. M. (Luís Miguel Mota Ferreira); Branco, J. B. (Joaquim Miguel Badalo Branco); Brazda, P.; Jurek, K.; Stora, T.; Goncalves, A. P. (António Cândido Lampreia Pereira Gonçalves)

Publicado em

01/01/2015

Resumo

Yb2O3 nano- and submicron-materials were prepared via electrospinning an homogeneous solution obtained by mixing ytterbium acetylacetonate with cellulose acetate in 1:1 acetyl acetone (2,4-pentanodione) and glacial acetic acid, followed by heat treatments for 2 h in air atmosphere at temperatures from 550 °C to 850 °C. The electrospinning procedure was carried out at 15 kV, with a tip to collector distance of 10 cm. Thermogravimetric analysis of the electrospun materials indicates their complete decomposition and oxidation below 425 °C, with a total weight loss of ~92%. The Williamson–Hall and the Brunauer−Emmett−Teller methods, and scanning and transmission electron microscopy observations were used to characterize the grain size and morphology of the samples. An initial very small grain size (<100 nm) and high porosity were observed in the samples treated at 550 °C, which is related to the important total weight loss. Further heat treatments at higher temperatures lead to the grain growth and agglomeration, increasing the average size to submicron dimensions. Due to their easy grain size tuning, these materials are particularly suitable for applications in fiber amplifiers, fiber optic technologies and lasers.

Detalhes da publicação

Autores da comunidade :

Versão da publicação

AO - Versão original do autor

Editora

Elsevier

Ligação para a versão da editora

https://www.sciencedirect.com/journal/ceramics-international

Título do contentor da publicação

Ceramics International

Primeira página ou número de artigo

10795

Última página

10802

Volume

41

Fascículo

9

ISSN

0272-8842

DOI

10.1016/j.ceramint.2015.05.017

WoS (Web of Science)

WOS:000359165500058

Domínio Científico (FOS)

materials-engineering - Engenharia dos Materiais

Palavras-chave

  • Grain growth
  • X-ray methods
  • Electron microscopy
  • Grain size

Idioma da publicação (código ISO)

eng - Inglês

Identificador alternativo (URI)

http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000359165500058&KeyUID=WOS:000359165500058

Acesso à publicação:

Acesso apenas a metadados