Nanocrystalline CdS with different morphologies and particle sizes was obta
ined via a novel solvothermal reaction between cadmium sails such as Cd(NO3
)(2) . 4H(2)O or CdSO4 . 8/3H(2)O and thiourea (Tu) at relatively low tempe
rature. It is found that solvents play an important role in controlling the
morphology and particle sizes of the nanocrystalline CdS product. The effe
ct of solvents, anions of the cadmium salt, the molar ratio of Tu to the ca
dmium salt, and temperature on the morphology, particle sizes and phase of
nanocrystalline CdS products has been investigated.