التفاصيل البيبلوغرافية
| العنوان: |
New insights into the formation of multi-core–shell mesoporous SnO2@SnS2 nanostructures |
| المؤلفون: |
Marta Radecka, Andrzej Mikuła, Anna Kusior, Kinga Michalec |
| المصدر: |
Materials Research Letters, Vol 9, Iss 10, Pp 445-451 (2021) |
| بيانات النشر: |
Taylor & Francis, 2021. |
| سنة النشر: |
2021 |
| مصطلحات موضوعية: |
Nanostructure, Materials science, sno2@sns2, Shell (structure), Nanotechnology, Heterojunction, Nanocrystal, multi-core–shell, Chemical conversion, TA401-492, General Materials Science, Mesoporous material, Materials of engineering and construction. Mechanics of materials, defects |
| الوصف: |
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. |
| DOI: |
10.6084/m9.figshare.16546292 |
| URL الوصول: |
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e34394eff94dcf26f97322b1390f7b9e |
| Rights: |
OPEN |
| رقم الانضمام: |
edsair.doi.dedup.....e34394eff94dcf26f97322b1390f7b9e |
| قاعدة البيانات: |
OpenAIRE |