Obtaining and characterization of ZnSe nanoparticles from aqueous colloidal dispersions
Structural, morphological and compositional characterizations of zinc selenide (ZnSe) nanoparticles (NPs) are presented. ZnSe NPs have been obtained by colloidal synthe sis in aqueous solution using zinc nitrate (Zn(NO 3 ) 2 ) and elemental selenium (Se) as precursors, sodium borohydride (NaBH 4 ) a...
| Autores: | , , , , , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2014 |
| País: | México |
| Institución: | Universidad Nacional Autónoma de México |
| Repositorio: | Redalyc-UNAM |
| OAI Identifier: | oai:redalyc.org:94231175003 |
| Acceso en línea: | https://www.redalyc.org/articulo.oa?id=94231175003 |
| Access Level: | acceso abierto |
| Palabra clave: | Física, Astronomía y Matemáticas ZnSe Nanoparticles Aqueous media Colloidal method |
| Sumario: | Structural, morphological and compositional characterizations of zinc selenide (ZnSe) nanoparticles (NPs) are presented. ZnSe NPs have been obtained by colloidal synthe sis in aqueous solution using zinc nitrate (Zn(NO 3 ) 2 ) and elemental selenium (Se) as precursors, sodium borohydride (NaBH 4 ) as reducing agent, a solution of sodium hydroxide (NaOH) and pentasodium trip olyphosphate (Na 5 P 3 O 10 ) named Extran was used as surfactant. The pH was varied from 8 to 11 and the Zn:Se molar concentration was varied from 3:1 to 1:3. A cleaning process was applied to eliminate the by-products using hydrochloric acid (HCl). ZnSe NPs exhi bit a cubic zinc-blende structure. The NPs size was estimated between 4.9 nm and 3.0 nm and depends on molar concentration. |
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