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利用两步实验选择性合成孔状Co3O4纳米片和纳米棒:首先,以Co(NO3)2·6H2O,NaOH和不同量的NH4F为原料在120℃水热6h的条件下合成了Co(OH)2-Co3O4纳米片(S1)和Co(OH)F-Co3O4纳米棒(S2);然后将所得纳米片和纳米棒在400℃时加热2h即得到多孔的Co3O4纳米片和纳米棒。所得产物用X射线衍射(XRD)、场发射扫描电子显微镜(FE-SEM)和透射电子显微镜(TEM)进行了表征。此外电化学测试表明Co3O4纳米棒的电容量比Co3O4纳米片的更大。
Selective synthesis of porous Co3O4 nanosheets and nanorods by two-step experiments: Firstly, Co (OH) 2 was synthesized by hydrothermal reaction at 120 ℃ for 6h with Co (NO3) 2 · 6H2O, NaOH and different amounts of NH4F as starting materials. 2-Co3O4 nanosheets (S1) and Co (OH) F-Co3O4 nanorods (S2). The obtained nanosheets and nanorods were heated at 400 ℃ for 2h to obtain porous Co3O4 nanosheets and nanorods. The obtained product was characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM) and transmission electron microscopy (TEM). In addition, electrochemical tests showed that Co3O4 nanorods have larger capacitance than Co3O4 nanosheets.