摘要 : The present work reports the effect of reaction time on solvothermal synthesis of copper sulfides from CuCl{sub}2·2H{sub}2O and thiourea with various compositions and morphologies using ethylenediamine as solvent at 120℃. X-ray d... 展开 The present work reports the effect of reaction time on solvothermal synthesis of copper sulfides from CuCl{sub}2·2H{sub}2O and thiourea with various compositions and morphologies using ethylenediamine as solvent at 120℃. X-ray diffraction patterns of the products at different durations shows the development of different stoichiometric composition of copper sulfides in where Cu:S ratio increases from 1.39 to 1.79 indicating transformation of Cu{sub}39S{sub}28 to Cu{sub}7S{sub}4. As inferred by EDX and XPS studies of the final products. SEM shows the growth of bundles of nanorods of length ≈1μm and diameter in nanometer range are observed after 6 h. On increasing the reaction duration to 9 h, nanorods tends to combines with each other and growth occurs in six directions and after 12 h leads to the formation of flower-like morphology of copper sulfide. The optical properties of these products also have been studied. 收起