A5044405841- Nonlinear Optical Materials Research
- Luminescence Properties of Advanced Materials
- Glass properties and applications
- Bone Tissue Engineering Materials
- Dental Implant Techniques and Outcomes
- Solid-state spectroscopy and crystallography
- Chemical Thermodynamics and Molecular Structure
- Agricultural and Food Sciences
- Nanomaterials for catalytic reactions
- Radiation Shielding Materials Analysis
- Photochemistry and Electron Transfer Studies
- Porphyrin and Phthalocyanine Chemistry
- Growth and nutrition in plants
- Thermal Expansion and Ionic Conductivity
- Adsorption and Cooling Systems
- Adsorption and biosorption for pollutant removal
- Pigment Synthesis and Properties
- Supramolecular Chemistry and Complexes
- Nuclear materials and radiation effects
- Lanthanide and Transition Metal Complexes
- Extraction and Separation Processes
- Crystal Structures and Properties
- Banana Cultivation and Research
- Molecular Sensors and Ion Detection
- Phase Change Materials Research
Universidade Federal do Maranhão
2020-2025
In this study, L-threonine crystals (L-thr) containing Dy3+ ions (L-thrDy5 and L-thrDy10) with varying mass concentrations (5% 10%) were successfully synthesized using a solvent slow evaporation method. The structural properties characterized by Powder X-ray diffraction Rietveld refinement. data revealed that all three samples crystallized in orthorhombic symmetry (P212121-space group) presented four molecules per unit cell (Z = 4). However, the addition of induced dilation effect lattice...
Abstract New polymeric spheres of sodium alginate (AlgNa) containing dicarboxylic acids—maleic acid (MA) and oxalic (OA)—were developed for adsorption copper metal from water. Water capacity, elementary composition, structural, morphological, vibrational, thermal properties were characterized by scanning electron microscopy (SEM), intumescence degree (IG), X‐ray diffraction (XRD), Fourier transform infrared (FT‐IR) spectroscopy, differential calorimetry. SEM data revealed that...
In this paper, a novel mixed Tutton salt (K0.86Na0.14)2Ni(SO4)2(H2O)6 was successfully synthesized as single crystal and evaluated thermochemical heat storage material. Its thermal properties were correlated with the structure, which determined by powder X-ray diffraction using Le Bail Rietveld methods. The elemental ratio between K+ Na+ monovalent cations established energy-dispersive spectroscopy. Similar compounds such Na2Ni(SO4)2(H2O)4 K2Ni(SO4)2(H2O)6 also used for structural...
Este trabalho, teve como objetivo avaliar a eficiência de lâmpadas cultivo no amadurecimento mamão. Foram utilizadas indoor durante 72 horas estudo; cada lâmpada contendo 80 LEDs, sendo 64 LEDs vermelhos (638 nm) e 16 azuis (468 nm). analisadas perda massa fresca, Brix, pH, Acidez titulável vitamina C. Os resultados mostraram que exposição contínua dos mamões pelo período resultou em maduros saudáveis; este resultado foi comprovado partir da mudança na coloração casca das análises...
RESUMO A síntese de cristais semiorgânicos formados por aminoácidos e metais nos últimos anos tem ganhado maior atenção devido às propriedades estruturais vibracionais promissoras destas moléculas. Neste âmbito, este trabalho visou à um monocristal L-Treonina complexado com o íon Cu2+ pelo método evaporação lenta do solvente, bem como estudo das estruturais, vibracional térmica. O material foi obtido após 30 dias em pH 5.8. Verificou-se meio da Difração raios X que cristal sintetizado possui...