Homogeneous precipitation at solid/solution interface as a novel chemical route for synthesis of nanoparticles: application to Cd(II) and Pb(II) sulfides
| Autor: | Adel F. Shoukry, Nadia M. Shuaib, Abdulhakeem A. Ajadi |
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| Rok vydání: | 2017 |
| Předmět: |
capping agent
Materials science Inorganic chemistry Biomedical Engineering thioacetamide Nanoparticle Bioengineering 02 engineering and technology Crystal structure lcsh:Chemical technology 010402 general chemistry 01 natural sciences Metal chemistry.chemical_compound Bromide lcsh:TA401-492 lcsh:TP1-1185 General Materials Science Fourier transform infrared spectroscopy Homogeneous precipitation Aqueous solution 021001 nanoscience & nanotechnology 0104 chemical sciences solid/solution interface chemistry Transmission electron microscopy visual_art visual_art.visual_art_medium lcsh:Materials of engineering and construction. Mechanics of materials metal sulphide nanoparticles 0210 nano-technology Solid solution |
| Zdroj: | Journal of Experimental Nanoscience, Vol 13, Iss 1, Pp 39-49 (2018) |
| ISSN: | 1745-8099 1745-8080 |
| DOI: | 10.1080/17458080.2017.1405165 |
| Popis: | Nanoparticles of CdS and PbS were prepared by a novel method in which a sparingly soluble salt of the metal is brought into contact with the preparation solution mixture, without mixing, to introduce Cd2+ or Pb2+ ion into the medium at infinitesimal doses. The aqueous solution mixture contained n-heptane; thioacetamide, as sulphide ion precursor; cetyltrimethylammonium bromide (CTAB), as capping agent; and n-butanol, as co-surfactant. At the solid/solution interface CTAB-capped nanometal sulphide is formed through a metathesis reaction in extreme dilute medium. UV-visible, FTIR, and X-ray diffraction spectroscopy, as well as transmission electron microscopy were used to characterise the nanoparticles. The results showed that in solution, the diameters of the prepared CdS and PbS are 2.67 and 1.87 nm, respectively. In crystalline form, the corresponding diameters are 3.8–6.6 nm, and 6.88–13.9 nm, respectively. The crystalline structure of CdS is cubic or hexagonal, while that of PbS is face-centred cubic. The FTIR studies proved that CTAB acted as a capping agent of the investigated nanoparticles. |
| Databáze: | OpenAIRE |
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