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Research Article | Open Access

NiWO4 powders prepared via polymeric precursor method for application as ceramic luminescent pigments

Naiara A. LIMAa( ), Lorena D. S. ALENCARb, Máximo SIU-LIa, Carlos A. C. FEITOSAc, Alexandre MESQUITAd, Jean-Claude M'PEKOa, Maria I. B. BERNARDIa
Instituto de Física de São Carlos, Universidade de São Paulo, 13560-970 São Carlos, SP, Brazil
Instituto Federal de Mato Grosso do Sul, IFMS, 79200-000 Aquidauana, MS, Brazil
Departamento de Física, Centro de Ciências Exatas e Tecnologia, Universidade Federal do Maranhão, UFMA, 65080-805, São Luis, MA, Brazil
Instituto de Geociências e Ciências Exatas, Departamento de Física, Universidade Estadual Paulista, 13506-900, Rio Claro, SP, Brazil
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Abstract

NiWO4 was prepared using the polymeric precursor method and studied in terms of physical and chemical properties to verify its stability for industrial applications as pigments. The characterization was accomplished using thermal analyses, X-ray diffraction (XRD), scanning electron microscopy (SEM), photoluminescence (PL) and UV–Vis spectroscopies, colorimetric coordinates, and Raman spectra. Increasing the temperature, successive exothermic reactions were observed and they are related with thermal decomposition of the organic compound. The stability was reached at ~700 ℃. The material is verified to become completely free of second phase at ~800 ℃. The end NiWO4 powders showed an intense charge transfer (CT)-related tail centered in the ultraviolet region, resulting in a yellow product. In addition, the powders exhibited broad excitation band and broad deep blue–green emission band, which were enhanced with increasing powders’ crystallinity.

Keywords

nickel tungstateyellow pigmentcolorimetric coordinateoptical propertystructural characterization

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Journal of Advanced Ceramics
Volume 9 Issue 1,
February 2020
Pages 55-63
DOI: 10.1007/s40145-019-0347-z

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Cite this article:
LIMA NA, ALENCAR LDS, SIU-LI M, et al. NiWO4 powders prepared via polymeric precursor method for application as ceramic luminescent pigments. Journal of Advanced Ceramics, 2020, 9(1): 55-63. https://doi.org/10.1007/s40145-019-0347-z

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Received: 24 March 2019
Revised: 05 August 2019
Accepted: 13 August 2019
Published: 05 February 2020
© The author(s) 2020

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