Controlled dispersion of ZnO nanoparticles produced by basic precipitation in solvothermal processes
Zinc oxide nanoparticles were successfully synthesized under precipitation processes, using ZnSO4·7H2O as a Zn2+ precursor and K2CO3 used as a basic source, and hydrozincite was obtained as an intermediary, which was treated under two procedures; first procedure involved multiple stages to get final...
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| Language: | English |
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Elsevier
2020-12-01
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| Series: | Heliyon |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2405844020326645 |
| _version_ | 1818662189790134272 |
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| author | Daniel Navas Andrés Ibañez Iván González Juan Luis Palma Paulina Dreyse |
| author_facet | Daniel Navas Andrés Ibañez Iván González Juan Luis Palma Paulina Dreyse |
| author_sort | Daniel Navas |
| collection | DOAJ |
| description | Zinc oxide nanoparticles were successfully synthesized under precipitation processes, using ZnSO4·7H2O as a Zn2+ precursor and K2CO3 used as a basic source, and hydrozincite was obtained as an intermediary, which was treated under two procedures; first procedure involved multiple stages to get final precipitated with NaOH, and in the second procedure the hydrozincite was straightforwardly dried at 220 °C. By both processes ZnO structures were obtained, which were turned into nanoparticles by a solvothermal treatment, for four hours in ethylene glycol at 200 °C. The final products for the first procedure was conglomerate of spherical nanoparticles with sizes ranged between 5–10 nm and dispersed ellipsoidal nanoparticles for the second procedure.Apart off the two procedures mentioned above, another synthesis was carried out with the same Zn2+ precursor but now using NaOH, and the solvothermal treatment produced ZnO mixed micro-structures which under ultrasonic cavitation disaggregated on mesoporous ZnO nanoplates of hexagonal shapes with nanopore sizes of approximately 0.35 nm. All ZnOs synthesized were structurally characterized with XRD, TEM and FT–IR techniques, and electronically with UV–Vis absorption and diffuse reflectance spectroscopies. |
| first_indexed | 2024-12-17T04:57:00Z |
| format | Article |
| id | doaj.art-2652da2e9ea146cda659475234d865c7 |
| institution | Directory Open Access Journal |
| issn | 2405-8440 |
| language | English |
| last_indexed | 2024-12-17T04:57:00Z |
| publishDate | 2020-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Heliyon |
| spelling | doaj.art-2652da2e9ea146cda659475234d865c72022-12-21T22:02:41ZengElsevierHeliyon2405-84402020-12-01612e05821Controlled dispersion of ZnO nanoparticles produced by basic precipitation in solvothermal processesDaniel Navas0Andrés Ibañez1Iván González2Juan Luis Palma3Paulina Dreyse4Departamento de Química, Facultad de Ciencias Naturales, Matemática y del Medio Ambiente, Universidad Tecnológica Metropolitana, Las Palmeras 3360, Ñuñoa, Santiago, 7800003, ChileDepartamento de Física, Facultad de Ciencias Físicas y Matemáticas, Universidad de Chile, Av. Beauchef 850, Casilla 653, Santiago, ChileFacultad de Ciencias de la Salud, Universidad Central de Chile, Lord Cochrane 418, Santiago, ChileCenter for the Development of Nanoscience and Nanotechnology (CEDENNA), Santiago, 9170124, Chile; Engineering School, Universidad Central de Chile, Santa Isabel 1186, Santiago, 8330601, ChileDepartamento de Química, Universidad Técnica Federico Santa María, Av. España 1680, Casilla 2390123, Valparaíso, Chile; Corresponding author.Zinc oxide nanoparticles were successfully synthesized under precipitation processes, using ZnSO4·7H2O as a Zn2+ precursor and K2CO3 used as a basic source, and hydrozincite was obtained as an intermediary, which was treated under two procedures; first procedure involved multiple stages to get final precipitated with NaOH, and in the second procedure the hydrozincite was straightforwardly dried at 220 °C. By both processes ZnO structures were obtained, which were turned into nanoparticles by a solvothermal treatment, for four hours in ethylene glycol at 200 °C. The final products for the first procedure was conglomerate of spherical nanoparticles with sizes ranged between 5–10 nm and dispersed ellipsoidal nanoparticles for the second procedure.Apart off the two procedures mentioned above, another synthesis was carried out with the same Zn2+ precursor but now using NaOH, and the solvothermal treatment produced ZnO mixed micro-structures which under ultrasonic cavitation disaggregated on mesoporous ZnO nanoplates of hexagonal shapes with nanopore sizes of approximately 0.35 nm. All ZnOs synthesized were structurally characterized with XRD, TEM and FT–IR techniques, and electronically with UV–Vis absorption and diffuse reflectance spectroscopies.http://www.sciencedirect.com/science/article/pii/S2405844020326645Zinc oxide nanoparticlesSolvothermal treatmentPrecipitationAlkaline mediaUltrasonic cavitationZnO mesoporous |
| spellingShingle | Daniel Navas Andrés Ibañez Iván González Juan Luis Palma Paulina Dreyse Controlled dispersion of ZnO nanoparticles produced by basic precipitation in solvothermal processes Heliyon Zinc oxide nanoparticles Solvothermal treatment Precipitation Alkaline media Ultrasonic cavitation ZnO mesoporous |
| title | Controlled dispersion of ZnO nanoparticles produced by basic precipitation in solvothermal processes |
| title_full | Controlled dispersion of ZnO nanoparticles produced by basic precipitation in solvothermal processes |
| title_fullStr | Controlled dispersion of ZnO nanoparticles produced by basic precipitation in solvothermal processes |
| title_full_unstemmed | Controlled dispersion of ZnO nanoparticles produced by basic precipitation in solvothermal processes |
| title_short | Controlled dispersion of ZnO nanoparticles produced by basic precipitation in solvothermal processes |
| title_sort | controlled dispersion of zno nanoparticles produced by basic precipitation in solvothermal processes |
| topic | Zinc oxide nanoparticles Solvothermal treatment Precipitation Alkaline media Ultrasonic cavitation ZnO mesoporous |
| url | http://www.sciencedirect.com/science/article/pii/S2405844020326645 |
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