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- Title
Nanostructured metal sulphides synthesized by microwave-assisted heating: a review.
- Authors
Becerra-Paniagua, Dulce K.; Díaz-Cruz, Evelyn B.; Baray-Calderón, Alejandro; Garcia-Angelmo, Ana R.; Regalado-Pérez, E.; del Pilar Rodriguez-Torres, María; Martínez-Alonso, Claudia
- Abstract
In recent decades, nanostructured metal sulphides (MSs) have gained great interest due to their extensive applications ranging from optoelectronic devices to biomedical applications. Significant efforts are being focused on low toxicity MSs in response to the notable interest of the scientific community in pursuing more environmentally friendly alternatives. The controlled synthesis of MS nanostructures is crucial for providing control of their optoelectronic properties and potential applications. Among the various methods for synthesis of MSs, the microwave-assisted heating approach seems to be a viable option to conventional heating techniques for producing nanostructures using green routes, because of its homogeneous heating, greatly reduced synthesis time, as well as uniform morphology and higher phase purity of the produced materials. In this review, we provide a comprehensive overview of microwave-assisted heating and highlight its utility in the synthesis of MSs nanostructures. We address the synthesis of six environmentally friendly binary MSs that have been obtained by microwave-assisted heating: ZnS, SnSx (x = 1,2), CuS, Fe2S, Bi2S3, and Sb2S3. Herein, the most relevant findings related to the impact of microwaves on the morphology, dimensions, and properties of MS nanostructures have been summarised, emphasising the role of the dielectric constant. We conclude that materials with a large dielectric constant tend to grow in all directions with a proclivity towards a spherical shape, while materials with a small dielectric constant often grow unidirectionally, forming rod-like crystals. Finally, we evaluate the limitations, advantages, and prospects of microwave-assisted heating for the synthesis of nanostructures.
- Subjects
METAL sulfides; OPTOELECTRONIC devices; HEATING; PERMITTIVITY; DIELECTRIC materials; ZINC sulfide; SCIENTIFIC community
- Publication
Journal of Materials Science: Materials in Electronics, 2022, Vol 33, Issue 29, p22631
- ISSN
0957-4522
- Publication type
Article
- DOI
10.1007/s10854-022-09024-9