CAJ | 학술논문

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6 h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2 h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.
이용량보실험선택성합성공상Co3O4납미편화납미봉:수선,이Co(NO3)2·6H2O,NaOH화불동량적NH4F위원료재120 ℃수열6 h적조건하합성료Co(OH)2-Co3O4납미편(S1)화Co(OH)F-Co3O4납미봉(S2);연후장소득납미편화납미봉재400 ℃시가열2 h즉득도다공적Co3O4납미편화납미봉.소득산물용X사선연사(XRD)、장발사소묘전자현미경(FE-SEM)화투사전자현미경(TEM)진행료표정.차외전화학측시표명Co3O4납미봉적전용량비Co3O4납미편적경대.
A two-step method has been proposed for the selective synthesis of porous Co3O4 nanoplates and nanorods: firstly, Co(OH)2-Co3O4 nanoplates (S1) and Co(OH)F-Co3O4 nanorods (S2) were synthesized via the hydrothermal reaction of Co(NO3)2·6H2O, NaOH and different amounts of NH4F at 120 ℃ for 6 h; secondly, porous Co3O4 nanoplates and nanorods were obtained by thermal decomposition of the S1 and S2 precursors in air at 400 ℃ for 2 h, respectively. The obtained products were characterized by X-ray diffraction, field emission scanning electron microscopy, and transmission electron microscopy. Besides, the electrochemical tests showed that the as-prepared Co3O4 nanorods have larger specific capacitances than the as-prepared Co3O4 nanoplates.