Szczegóły publikacji
Opis bibliograficzny
New insights into the formation of multi-core-shell mesoporous $SnO_{2}@SnS_{2}$ nanostructures / Kinga MICHALEC, Anna KUSIOR, Andrzej MIKUŁA, Marta RADECKA // Materials Research Letters [Dokument elektroniczny]. — Czasopismo elektroniczne ; ISSN 2166-3831. — 2021 — vol. 9 iss. 10, s. 445–451. — Bibliogr. s. 450-451, Abstr. — Publikacja dostępna online od: 2021-08-31
Autorzy (4)
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 135924 |
|---|---|
| Data dodania do BaDAP | 2021-09-16 |
| Tekst źródłowy | URL |
| DOI | 10.1080/21663831.2021.1971785 |
| Rok publikacji | 2021 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Creative Commons | |
| Czasopismo/seria | Materials Research Letters |
Abstract
SnO2@SnS2 multi-core–shell heterostructures were synthesised via chemical conversion of mesoporous raspberry-like SnO2 nanocrystals. In the syntheses, different concentrations of a sulphide precursor (thioacetamide) were applied. The samples were analysed using scanning and high-resolution transmission electron microscopy, X-ray diffraction, Raman spectroscopy, energy-dispersive X-ray spectroscopy, and X-ray photoelectron spectroscopy. The results revealed the presence of surface defects (Sn2+, oxygen vacancies) on the raspberry-like surface, which play a crucial role in the chemical conversion reaction. With an increasing amount of thioacetamide, additional redox reactions occurred in the system (Sn4+/Sn2+, S2−/S0). The highest precursor concentration led to the microstructural disintegration and phase composition change. This paper demonstrates the role of defects on the formation of SnO2@SnS2 multi-core–shell heterostructures in mesoporous SnO2 nanomaterials.
