Morphology-controlled synthesis of CuO nano- and microparticles using microwave irradiation

作者：Jung Alum; Cho Seungho; Cho Won Joon; Lee Kun Hong^*

来源：Korean Journal of Chemical Engineering, 2012, 29(2): 243-248.

DOI：10.1007/s11814-011-0168-4

• Hydrothermal Synthesis
• Copper Oxide
• Microwave
• Ammonia
• Urea

Microwave irradiation was used to obtain a variety of CuO crystal morphologies, including leaf-like, dan-, delion-like, and hollow structures. The morphology of the CuO crystals was controlled by varying the alkali source (NaOH, hexamethylenetetramine, ammonia, or urea) and heating at 95 degrees C for 1 hr. The X-ray diffraction patterns of as-prepared CuO crystals were consistent with high quality crystals with a monoclinic crystal structure. Field emission scanning electron microscopy (FE-SEM) and tunneling electron microscopy (TEM) images of CuO crystals revealed that the leaf-like CuO crystals had an average length of 950 nm and width of 450 nm, the small leaf-like CuO crystals had an average length of 450 nm and width of 200 nm, the dandelion-like CuO structures had an average diameter of 2 m, and the hollow CuO structures had an average diameter 2 m. Possible mechanisms for structure formation during the shape-selective CuO synthesis were proposed based on these results.

• 出版日期2012-2