A general synthesis and electrocatalytic activity of low-dimensional MO and M-Co (M=Cu, Ni, Zn and Cd) composite oxides

作者：Pan Lu; Xu Mai; Zhang ZuDe^*

来源：Materials Chemistry and Physics, 2010, 123(1): 293-299.

DOI：10.1016/j.matchemphys.2010.04.014

• Composite oxide materials
• Hydrothermal synthesis
• Electrocatalysis

An assisting template with cyclohexylamine was used to synthesize low-dimensional Co(3)O(4), MO, M-Co (M=Cu, Ni, Zn and Cd) composite oxides with M/Co atomic ratio of 1:2. The as-synthesized samples were characterized by scanning electron microscopy (SEM), thermogravimetric analysis (TGA), X-ray diffraction (XRD) and transmission electron microscopy (TEM). The results indicated that Co(3)O(4) and CdO possessed sheet-like morphologies, NiO demonstrated belt-like morphology, ZnO represented rod-like shape. The morphologies of the composite M-Co oxides (M=Cu and Cd) represented rod-like shape, Ni-Co and Zn-Co oxides exhibited belt-like and sheet-like morphologies. According to phase analysis with XRD technology, M-Co (M=Cu, Ni and Zn) possessed MCo(2)O(4) spinel structure but Cd-Co oxides revealed a hybrid structure. The electrocatalytic activity for p-nitrophenol reduction with a glassy carbon electrode modified with the as-prepared metal oxides or M-Co composite oxides was investigated in a basic solution, and the results indicated that NiO and Co(3)O(4) showed a certain but CdO and ZnO a little electrocatalytic activity for p-nitrophenol reduction, while M-Co composite oxides all revealed high electrocatalytic activity for the reduction of p-nitrophenol.

• 出版日期2010-9-1
• 单位淮南师范学院