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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Nucleation front instability in two-dimensional (2D) nanosheet gadolinium-doped cerium oxide (CGO) formation

Full text
Author(s):
Marani, Debora [1, 2] ; Reis Moraes, Leticia Poras [3] ; Gualandris, Fabrizio [1] ; Sanna, Simone [1] ; de Florio, Daniel Zanetti [2] ; Esposito, Vincenzo [1] ; Fonseca, Fabio Coral [3]
Total Authors: 7
Affiliation:
[1] Tech Univ Denmark DTU, Dept Energy Convers & Storage, Frederiksborgvej 399, DK-4000 Roskilde - Denmark
[2] Univ Fed ABC, Ctr Engn Modelagem & Ciencias Sociais Aplicadas, Av Estados 5001, BR-09210580 Santo Andre, SP - Brazil
[3] Nucl & Energy Res Inst IPEN, CNEN SP, BR-05508000 Sao Paulo, SP - Brazil
Total Affiliations: 3
Document type: Journal article
Source: CrystEngComm; v. 20, n. 10, p. 1405-1410, MAR 14 2018.
Web of Science Citations: 1
Abstract

Herein we report for the first time the synthesis of ceramic-organic three-dimensional (3D) layered gadolinium-doped cerium oxide (Ce1-XGdXO2-delta,CGO) and its exfoliation into two-dimensional (2D) nano-sheets. We adopt a water-based synthetic route via a homogenous precipitation approach at low temperatures (10-80 degrees C). The reaction conditions are tuned to investigate the effects of thermal energy on the final morphology. A low temperature (40 degrees C) morphological transition from nanoparticles (1D) to two-dimensional (2D) nanosheets is observed and associated with a low thermal energy transition of ca. 2.6 kJ mol(-1). For the 3D-layered material, exfoliation experiments are conducted in water/ethanol solutions. Systems at volume fractions ranging from 0.15 to 0.35 are demonstrated to promote under ultrasonic treatment the delamination into 2D nanosheets. (AU)

FAPESP's process: 14/50279-4 - Brasil Research Centre for Gas Innovation
Grantee:Julio Romano Meneghini
Support type: Research Grants - Research Centers in Engineering Program
FAPESP's process: 15/20434-0 - Development of ceramic nanosheets-based inks for inkjet printing of ultra-thin films for solid oxide cells (SOCs) components
Grantee:Fabio Coral Fonseca
Support type: Research Grants - Visiting Researcher Grant - International
FAPESP's process: 14/09087-4 - Studies on the use of bioethanol in proton exchange membrane and solid oxide fuel cells
Grantee:Marcelo Linardi
Support type: Research Projects - Thematic Grants