Synthesis of Co9S8 and CoS nanocrystallites using Co(II) thiosemicarbazone complexes as single-source precursors

Bulletin of materials science

Shivram S Garje¹  Amol S Pawar¹ 

[1] Department of Chemistry, University of Mumbai, Vidyanagari, Santacruz (East), Mumbai 400 098, India$$Department of Chemistry, University of Mumbai, Vidyanagari, Santacruz (East), Mumbai 400 098, IndiaDepartment of Chemistry, University of Mumbai, Vidyanagari, Santacruz (East), Mumbai 400 098, India$$

关键词: Cobalt sulphide;    single-source precursors;    pyrolysis and solvothermal decomposition.;   

DOI  :  

学科分类：材料工程

来源: Indian Academy of Sciences

【 摘 要 】

Cubic Co₉S₈ and hexagonal CoS nanocrystallites were prepared by pyrolysis and solvothermal decomposition methods using Co(LH)₂Cl₂ and CoL₂ (where LH = thiosemicarbazones of furfuraldehyde, cinnamaldehyde and 4-fluoro-acetophenone) as single-source precursors. These nanocrystallites were characterized by powder X-ray diffraction, scanning electron microscopy, transmission electron microscopy (TEM), selected area electron diffraction, UVâ€�?�Vis, PL and Raman spectroscopic techniques. From TEM images, the average grain size of asprepared cobalt sulphide nanocrystallites was found to be 7â€�??10 nm. Depending on experimental conditions, various morphologies such as spherical, pyramidal, hollow spheres, etc. are observed in the TEM images.

【 授权许可】

Unknown