EDSON DE OLIVEIRA COSTA

Dr. EDSON DE OLIVEIRA COSTA

Federal University of Campina Grande, Campina Grande, Paraíba, Brazil
Graduado em Química (2018); Mestre em Ciência e Engenharia d...

Research Focus & Metrics

Academic Career Length

12Years (2015-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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1 November 2015
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EDSON DE OLIVEIRA COSTAEDSON DE OLIVEIRA COSTA
EDSON DE OLIVEIRA COSTA
JSJosé Carlos Oliveira Santos
José Carlos Oliveira Santos

5 September 2022 in Research, Society and Development
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EDSON DE OLIVEIRA COSTAEDSON DE OLIVEIRA COSTA
EDSON DE OLIVEIRA COSTA
CMCrislene Rodrigues Da Silva Morais
Crislene Rodrigues Da Silva Morais
The lanthanide ion complexes have luminescence properties as they provide a wide potential for applications. In this work the Ln(β-dic)3L complexes (where Ln = Eu+3, Er+3 and Nd+3, β-dic = 4,4,4-trifluoro-1-phenyl-1,3-butanedione (HBtfa) and L = 1,10-Phenanthroline (Phen) were synthesized from reaction direct of LnCl3 with β-diketone and the ligand Phen. The reaction lanthanide salts with organic ligands originates or three solid complexes: [Eu(HBtfa)3Phen , Er(HBtfa)3Phen and Nd(HBtfa)3Phen], which differ from the differences of lanthanide salts and ligands, suggesting the occurrence of coordination between lanthanide ions and organic ligands. Thus, the complexes were characterized by solubility test, absorption spectroscopy in the infrared region (FT-IR), X- ray diffraction (XRD). Based on the properties verified, the solubility test was found that the complexes are not chlorine-water and these were quite soluble and acetone. However, the complexes must present good solubility in solution and high stability, photochemical physiological conditions and kinetics under physiological conditions, in addition to not changing their biological structural and chemical properties. Thus, aims at the synthesis and characterization of complex studies of lanthanide ions with β-diketone and 1,10-phenanthroline in the perspective of studying biological applications and drugs with antitumor activities..

19 May 2026 in Preprints.org
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EDSON DE OLIVEIRA COSTAEDSON DE OLIVEIRA COSTA
EDSON DE OLIVEIRA COSTA
MBMaria Aparecida Ribeiro Bonifácio
Maria Aparecida Ribeiro Bonifácio
ASAdriana Santos
Adriana Santos
CSCochian Pereira dos Santos
Cochian Pereira dos Santos
Jose Carlos Martins De AlmeidaJose Carlos Martins De Almeida
Jose Carlos Martins De Almeida
CMCrislene Rodrigues Da Silva Morais
Crislene Rodrigues Da Silva Morais
Glass-ceramic foams (BVZ: bottle glass waste–zirconia residue–bentonite) were produced using the polymeric replica method from low-cost raw materials, comprising approximately 85 wt% bottle glass waste and zirconia residue, and 15 wt% regional bentonite. To evaluate the effect of zirconia residue on the microstructure and physicochemical properties of the BVZ foams, aqueous precursor suspensions were prepared with varying proportions of bottle glass waste (59.7–69.7 wt%) and zirconia residue (14.9–19.9 wt%), and sintered at 750 °C, 800 °C, and 850 °C. X-ray diffraction (XRD) analysis revealed a reduction of the amorphous halo (15–35° 2θ) and an increase in crystallinity with increasing temperature, indicating devitrification of the glassy matrix. The main crystalline phases identified were zircon (ZrSiO₄), nepheline (NaAlSiO₄), AlPO₄, and zirconia (ZrO₂), with evidence of minor domains structurally compatible with NASICON-type phases (NaZr₂(PO₄)₃). In general, glass-ceramic foams produced with high waste content showed greater densification and reduced porosity at 850 °C. The mechanical strength was sufficient for handling and assembly in electrochemical cell components, while the reduced brittleness supports safe processing and indicates potential for scalable manufacturing.