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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, Characterization and Optical Activity of RE-doped ZnWO4 Nanorods and Nanospheres by Hydrothermal Method

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Author(s):
Mesquita Borges, Kellen Cristina [1] ; Goncalves, Rosana de Fatima [1, 2] ; de Matos Rodrigues, Murillo Henrique [1] ; Reinalda Arruda, Rivia Aparecida [1] ; de Cassia Santos, Maria Rita [1] ; Azevedo Marques, Ana Paula [2] ; Godinho Junior, Mario [1]
Total Authors: 7
Affiliation:
[1] UFG, Ave Lamartine, Catalao, Go - Brazil
[2] UNIFESP Univ Fed Sao Paulo, Rua Prof Artur Riedel, 275, Diadema, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Source: ORBITAL-THE ELECTRONIC JOURNAL OF CHEMISTRY; v. 11, n. 2, SI, p. 115-118, APR 2019.
Web of Science Citations: 0
Abstract

This work has investigated the effect of different dopants on structure, morphology and optical property of ZnWO4. Rare-earth doped ZnWO4 (ZnWO4:RE, with 0.5, 1, and 2 mol% of Eu3+ and Pr3+) were successfully synthesized by coprecipitation method followed by microwave-assisted hydrothermal system at 140 degrees C for 1 h. XRD indicated that the crystals have a wolframite- type monoclinic structure and with the addition of dopants the crystallite size decreased. HR-TEM images revealed interesting homogenous nanorods for pure ZnWO4 crystals with grow along (021) direction. For ZnWO4: RE we have found nanospheres morphologies, in which the decreasing crystal size were dependent on the RE doping concentration. IR spectra confirm the crystals structure. Ultraviolet-Visible diffuse reflectance spectra indicated that the optical band gap varies with increasing replacement of Zn2+ by RE ions. E-gap was characteristic of semiconductor materials. (AU)

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