Alkaline mode cobalt vanadate micrometer sheet material and preparation method thereof
A technology of cobalt vanadate and micron flakes, applied in nanotechnology, nanotechnology, nanotechnology, etc. for materials and surface science, to achieve the effect of mild reaction conditions, simple process and controllable conditions
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Embodiment 1
[0027] At room temperature, respectively dissolve 2 mmol of ammonium metavanadate into 8 mL of distilled water, dissolve 1 mmol of cobalt acetate into 8 mL of distilled water, and add the ammonium metavanadate solution dropwise to the cobalt acetate solution under magnetic stirring. Continue to stir for 10 min after the dropwise addition, then transfer to a 25 mL hydrothermal reaction kettle, seal it, place it in a constant temperature box and conduct a hydrothermal reaction at 180 °C for 6 h, cool to room temperature after the reaction, and rinse with deionized water and absolute ethanol were centrifuged and washed 5 times, and the obtained precipitate was dried in an oven at 80°C for 8 hours to obtain the product.
[0028] The above product was subjected to X-ray diffraction (XRD) analysis, figure 1 is the XRD spectrum. The diffraction peaks of the product do not match the substances containing Co, V, O, and H in the existing JCPDS-ICDD database, but the intensity and posit...
Embodiment 2
[0030]At room temperature, dissolve 1.8 mmol of ammonium metavanadate in 14 mL of distilled water, dissolve 1 mmol of cobalt acetate in 2 mL of distilled water, and add the ammonium metavanadate solution dropwise to the cobalt acetate solution under magnetic stirring. Stir for 10 min, then transfer to a 20 mL hydrothermal reaction kettle, seal it and place it in a thermostat for 12 hours at 180 °C for hydrothermal reaction, cool to room temperature after the reaction, and centrifuge with deionized water and absolute ethanol, respectively After washing 5 times, place in an oven and dry at 80°C for 12 hours to obtain basic cobalt vanadate microsheet material. The above product was subjected to X-ray diffraction (XRD) analysis, Figure 5 Be XRD spectrum figure, its XRD spectrum is identical with embodiment 1, based on the same analysis of embodiment 1, its product is Co 3 (OH) 2 V 2 o 7 2H 2 O. Image 6 It is a scanning electron microscope analysis picture, which shows that...
Embodiment 3
[0032] At room temperature, dissolve 1 mmol of ammonium metavanadate in 14 mL of distilled water, dissolve 0.5 mmol of cobalt acetate in 2 mL of distilled water, and add the ammonium metavanadate solution dropwise to the cobalt acetate solution under magnetic stirring. Continue to stir for 10 min after the dropwise addition, then transfer to a 20 mL hydrothermal reaction kettle, seal it and place it in a constant temperature box for hydrothermal reaction at 160 °C for 6 hours, cool to room temperature after the reaction, and use deionized water and no Water and ethanol were centrifuged and washed 5 times, and the obtained precipitate was dried in an oven at 80°C for 8 hours to obtain basic cobalt vanadate microsheet materials. The above product was subjected to X-ray diffraction (XRD) analysis, Figure 7 Be XRD spectrum figure, its XRD spectrum is identical with embodiment 1, based on the same analysis of embodiment 1, its product is Co 3 (OH) 2 V 2 o 7 2H 2 O.
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Abstract
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