Phase control and formation mechanism of new-phase layer-structured rhombohedral In3Se4 hierarchical nanostructures

Han, Guang, Chen, Zhi-Gang, Yang, Lei, Cheng, Lina, Drennan, John and Zou, Jin (2013) Phase control and formation mechanism of new-phase layer-structured rhombohedral In3Se4 hierarchical nanostructures. Crystal Growth and Design, 13 11: 5092-5099. doi:10.1021/cg401269p


Author Han, Guang
Chen, Zhi-Gang
Yang, Lei
Cheng, Lina
Drennan, John
Zou, Jin
Title Phase control and formation mechanism of new-phase layer-structured rhombohedral In3Se4 hierarchical nanostructures
Journal name Crystal Growth and Design   Check publisher's open access policy
ISSN 1528-7483
1528-7505
Publication date 2013-11-06
Year available 2013
Sub-type Article (original research)
DOI 10.1021/cg401269p
Volume 13
Issue 11
Start page 5092
End page 5099
Total pages 8
Place of publication Washington, DC United States
Publisher American Chemical Society
Language eng
Subject 1600 Chemistry
2500 Materials Science
3104 Condensed Matter Physics
Abstract New layer-structured rhombohedral In3Se4 hierarchical nanostructures, assembled by thin nanosheets with a thickness of ∼20 nm, are controllably synthesized by an ethylenediaminetetraacetic acid (EDTA) and ascorbic acid (AA) assisted solvothermal method in a solvent of deionized water (DIW) and ethylene glycol (EG). Detailed structural and chemical characterizations, using transmission electron microscopy and X-ray diffraction with Rietveld refinement, reveal that the new In3Se4 phase crystallizes in a layered rhombohedral structure (space group: R3̄m) with lattice parameters of a = 3.962 ± 0.001 Å and c = 39.59 ± 0.01 Å and with layers consisting of Se-In-Se-In-Se-In-Se. Through systematic investigation, the key synthesis parameters, namely, the EDTA/In mole ratio, DIW/EG volume ratio, AA dosage, and reaction temperature, are found to play vital roles in the formation of such rhombohedral hierarchical nanostructures. The investigation of intermediate products shows that the In3Se4 hierarchical nanostructures are formed by the reaction between Se microspheres and In precursors. This study provides a key method to large-scale fabrication of such a new In3Se4 phase for potential applications.
Keyword Materials Characterisation
Materials synthesis
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

 
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