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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.)

Synthesis of acicular alpha-Bi2O3 microcrystals by microwave-assisted hydrothermal method

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Author(s):
Schmidt, Samara [1, 2] ; Kubaski, Evaldo T. [3] ; Volanti, Diogo P. [4] ; Sequinel, Thiago [5] ; Bezzon, Vinicius D. N. [1] ; Tebcherani, Sergio M. [6]
Total Authors: 6
Affiliation:
[1] UNESP, Inst Chem, Dept Phys Chem, Araraquara, SP - Brazil
[2] Univ Tecnol Fed Parana, Dept Prod Engn, Ponta Grossa, PR - Brazil
[3] Univ Estadual Ponta Grossa, Dept Mat Engn, Ave Gen Carlos Cavalcanti 4748, BR-84030900 Ponta Grossa, PR - Brazil
[4] UNESP, IBILCE, Dept Chem & Environm Sci, Sao Jose Do Rio Preto, SP - Brazil
[5] Fed Univ Grande Dourados, Fac Exact Sci & Technol FACET, Dourados, MS - Brazil
[6] Univ Estadual Ponta Grossa, Dept Chem, Ponta Grossa, PR - Brazil
Total Affiliations: 6
Document type: Journal article
Source: PARTICULATE SCIENCE AND TECHNOLOGY; v. 37, n. 8, p. 923-927, NOV 17 2019.
Web of Science Citations: 0
Abstract

Materials based on bismuth(III) oxide are candidate to be used in optical and electronic devices because of their properties such as a variable band gap, photoconductivity, photoluminescence, high refractive index, and dielectric permittivity. These properties are dependent of several factors, e.g., present phases and crystal morphology. The microwave-assisted hydrothermal method (MAH) is a fast and efficient approach of synthesis to obtain semiconductor powders. However, the synthesis of monoclinic bismuth oxide (alpha-Bi2O3) with acicular morphology by MAH was not found in literature. In this paper, microcrystals of acicular alpha-Bi2O3 (monophasic) were successfully obtained by MAH using a synthesis temperature of 80 degrees C for 0.5 h. X-ray diffraction, X-ray photoelectron spectroscopy, scanning electron, and transmission electron microscopies showed the formation of a monoclinic structure (space group P21/c) with acicular morphology that grew along the {[}001] direction. The temperature and time necessary to synthetize acicular microcrystals were significantly lower than those found for acicular microcrystals obtained by conventional hydrothermal method. (AU)

FAPESP's process: 13/07296-2 - CDMF - Center for the Development of Functional Materials
Grantee:Elson Longo da Silva
Support Opportunities: Research Grants - Research, Innovation and Dissemination Centers - RIDC