Phase and Shape Evolution of CdS Nanocrystallites under Solvothermal Conditions
CdS nanocrystallites with different morphologies have solvothermally prepared with ethylenediamine (en) and glycol as solvents. Solvent-dependent experiments were carried out by adjusting the ratios of en/glycol to investigate the effects of the solvents on the product phase formation and morphology. It was found that the morphology of CdS nanocrystallite develops from a rough spherical nanoparticle to a rod-, twinrod-, and tetrapod-shaped nanoparticle by increasing the ratio of en/glycol, meanwhile the phase composition changes from coexistence of tetragonal zinc blende CdS and hexagonal wurtzite CdS to pure hexagonal wurtzite CdS. Based on the experimental results, a possible shape evolution mechanism of CdS nanocrystallites is simply discussed.
Rongming Wang, Ying Wu and Xiaofeng Wu
G. Xu et al., "Phase and Shape Evolution of CdS Nanocrystallites under Solvothermal Conditions", Materials Science Forum, Vol. 688, pp. 195-200, 2011