Green synthesis of zirconia nanoparticles based on Euclea natalensis plant extract
Carregando...
Data
Data de publicação
Autores IPEN
Orientador
Título da Revista
ISSN da Revista
Título do Volume
É parte de
É parte de
É parte de
Colloids and Surfaces A
ODS
Exportar
Resumo
The development of nanomaterials has attracted increasing attention recently. The study of new technologies to
obtain these materials becomes extremely important since the majority of the nanomaterials synthesized require
reagents and solvents. These reagents and solvents are sometimes toxic and may generate harmful residues to the
environment and the health of living beings. Therefore, green synthesis is a potential alternative to obtain
nanoparticles, sustainably, using ecological sources. This study developed a method of synthesizing the green of
zirconia (ZrO2) nanoparticles using Euclea natalensis (Natal gwarri or Natal ebony tree with African origin) plant
extract. Moreover, the adsorptive properties against tetracycline were evaluated. A factorial design was applied
in the synthesis process, and an optimization of the reaction parameters (plant extract concentration, precursor
concentration, and calcination temperature) was also described for the first time in literature. The nanoparticles
were characterized using the XRD, FTIR and TEM techniques, and then subjected to batch adsorption tests. The
samples presented the zirconia monoclinic and tetragonal phases, according to the XRD analysis, yielding materials
with minimum crystallite sizes equal to 5.25 nm. The FTIR spectra confirmed the results obtained by the
XRD, presenting band characteristic of the zirconia monoclinic and tetragonal phases. The particles had a
rounded morphology with a very low average diameter ranging from 5.90 to 8.54 nm. Moreover, the nanoparticles
were applied to the adsorption of tetracycline. The samples were synthesized with vegetal extract and precursor concentration equal to 50 g L−1 and 0.03 mol L−1, respectively, and calcination temperature of 550 °C,
presented in the best performance (loading of 30.45 mg g−1). The adsorption capacity of the zirconia synthesized
in this study was significantly higher than other common materials applied to tetracycline removal. The green
synthesis procedure, as well as the application of the zirconia nanoparticles to the adsorption of an emerging
pollutant, were promising.
Como referenciar
SILVA, ANDERSON F.V. da; FAGUNDES, ANA P.; MACUVELE, DOMINGOS L.P.; CARVALHO, ELITA F.U. de; DURAZZO, MICHELANGELO; PADOIN, NATAN; SOARES, CINTIA; RIELLA, HUMBERTO G. Green synthesis of zirconia nanoparticles based on Euclea natalensis plant extract: optimization of reaction conditions and evaluation of adsorptive properties. Colloids and Surfaces A, v. 583, p. 1-10, 2019. DOI: 10.1016/j.colsurfa.2019.123915. Disponível em: http://repositorio.ipen.br/handle/123456789/30434. Acesso em: 30 Dec 2025.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.