Multivariate Synthesis of Tin Phosphide Nanoparticles: Temperature, Time, and Ligand Control of Size, Shape, and Crystal Structure
| Autor: | Lamia Nahar, Venkatesham Tallapally, Indika U. Arachchige, Richard J Alan Esteves |
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| Rok vydání: | 2016 |
| Předmět: |
Materials science
Absorption spectroscopy Phosphide General Chemical Engineering Nucleation Nanoparticle chemistry.chemical_element Nanotechnology 02 engineering and technology General Chemistry Crystal structure 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Crystal chemistry.chemical_compound Crystallography chemistry Phase (matter) Materials Chemistry 0210 nano-technology Tin |
| Zdroj: | Chemistry of Materials. 28:5406-5414 |
| ISSN: | 1520-5002 0897-4756 |
| Popis: | Tin phosphides make up a class of materials that have received a noteworthy amount of interest in photocatalysis, charge storage, and thermoelectric devices. Dual stable oxidation states of tin (Sn2+ and Sn4+) allow tin phosphides to exhibit different stoichiometries and crystal phases. However, the synthesis of such nanostructures with control over morphology and crystal structure has proven to be a challenging task. Herein, we report the first colloidal synthesis of size-, shape-, and phase-controlled, narrowly disperse rhombohedral Sn4P3, hexagonal SnP, and trigonal Sn3P4 nanoparticles (NPs) displaying tunable morphologies and size-dependent physical properties. The control over NP morphology and crystal phase was achieved by tuning the nucleation/growth temperature, Sn/P molar ratio, and incorporation of additional coordinating solvents (alkylphosphines). The absorption spectra of Sn3P4 NPs (3.0 ± 0.4 to 8.6 ± 1.8 nm) exhibit size-dependent blue shifts in energy gaps (1.38–0.88 eV) compared to the the... |
| Databáze: | OpenAIRE |
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