| Texto completo | |
| Autor(es): |
de Barros, Anerise
;
de Andrade, Aline M.
;
Sigoli, Fernando A.
;
Mazali, Italo O.
;
Arruda, Marco A. Z.
Número total de Autores: 5
|
| Tipo de documento: | Artigo Científico |
| Fonte: | Microchemical Journal; v. 220, p. 8-pg., 2025-12-18. |
| Resumo | |
Herein, we demonstrate that morphological size control of silver and gold nanospheres (AgNSph and AuNSph) can be accurately achieved using single-particle Inductively Coupled Plasma Mass Spectrometry (SPICP-MS) methodology, surpassing conventional methods such as dynamic light scattering (DLS) and ultraviolet-visible (UV-VIS) spectroscopy. The UV-VIS result revealed that the spectra for AuNSph and AgNSph displayed a full width at half maximum (FWHM) of 59.2 and 34.2, respectively. These values indicate that the AuNSph displayed a diameter of about 10-20 nm with a moderate polydispersity, while the AgNSph has a diameter of approximately 15-30 nm with better monodispersity. The DLS results confirm that AgNSph has a better polydispersity index (PdI) than AuNSph, with values of 0.137 and 0.330, respectively. In contrast, the average size distribution evaluated by DLS for AgNSph is significantly discrepant compared to the histogram obtained from scanning-transmission electron microscopy (S-TEM), with values of 28.11 nm versus 16.1 +/- 2.7 nm, which can be attributed to the contribution of the electrical double layer and surface ligands in colloidal suspensions. In this way, SPICP-MS is a key characterization for confirming the monodispersity and size distribution of these nanoparticles, whose results showed values of 16.1 +/- 2.7 nm by S-TEM and 17.7 +/- 4.2 nm by SPICP-MS for the AgNSph. Therefore, the feasibility of SPICP-MS methodology for size characterization and quantification has excellent potential for nanostakeholders. (AU) | |
| Processo FAPESP: | 19/24445-8 - EMU concedido no processo 2018/25207-0: espectrômetro de massas com plasma indutivamente acoplado |
| Beneficiário: | Marco Aurelio Zezzi Arruda |
| Modalidade de apoio: | Auxílio à Pesquisa - Programa Equipamentos Multiusuários |
| Processo FAPESP: | 20/02020-2 - Caracterização, determinação e quantificação de nanopartículas usando espectrometria de massa de plasma com plasma indutivamente acoplado e single-particle (sp-ICPMS) |
| Beneficiário: | Aline Martins de Andrade |
| Modalidade de apoio: | Bolsas no Brasil - Doutorado Direto |
| Processo FAPESP: | 18/25207-0 - Nanometalômica aplicada ao cultivo da soja para estudar os efeitos das nanopartículas relacionadas a metal |
| Beneficiário: | Marco Aurelio Zezzi Arruda |
| Modalidade de apoio: | Auxílio à Pesquisa - Temático |
| Processo FAPESP: | 22/02893-1 - Métodos ecológicos de síntese de nanopartículas metálicas para aplicação na avaliação do crescimento de plantas de soja na presença das nanopartículas |
| Beneficiário: | Anerise de Barros |
| Modalidade de apoio: | Bolsas no Brasil - Pós-Doutorado |