Synthesis and characterization of BaWO4:xTm3+,yPr3+ obtained by ultrasonic spray pyrolysis
| Author | Santiago, Anderson de Azevedo Gomes; Macedo, E. M.; Oliveira, Fernanda Karine Fonseca de; Motta, Fabiana Villela da; Delmonte, Maurício Roberto Bomio | |
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| Publisher | Springer | |
| Date | 2020-06-08 | |
| Keywords | Spray pyrolysis process Ultrasonic spray pyrolysis | |
| Citation | ||
| Abstract | In the present paper, BaWO4:xTm3+,yPr3+ samples were synthesized by the ultrasonic spray pyrolysis process and the efect of doping on the structural and optical properties were analyzed. All XRD patterns were indexed by the scheelite-type tetragonal structure, without the presence of secondary phases, suggesting success in the Tm3+ and Pr3+ doping. The FESEM images showed than particles have sphere-like morphology with the presence of holes, irregularity, and pores on their surfaces. The bandgap of the BaWO4:xTm3+,yPr3+ sample varied between 5.50 and 5.58 eV. The doping of Tm3+ and Pr3+ resulted in a reduction in the photocatalytic activity can be linked to a decrease of efective masses ratio electron/hole and an increase in the recombination rate | |
| URI | https://repositorio.ufrn.br/handle/123456789/41551 | |
| Collections | CT - DEMAT - Artigos publicados em periódicos |
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