Iron-doped nickel oxide obtained through pyrolysis taking hydrotalcite as precursor and application thereof in photocatalytic fuel cell
A fuel cell and photocatalysis technology, which is applied in photovoltaic power generation, electrolytic capacitors, circuits, etc., can solve the problems of reduced photoelectric conversion performance and low electron mobility, and achieves the effects of simple operation, cost reduction, and good commercial application prospects.
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Embodiment 1
[0024] 1. Prepare hydrotalcite by co-precipitation / double drop method: weigh 5.24g Ni(NO 3 ) 2 ·6H 2 O and 3.636gFe(NO 3 ) 3 9H 2 O was dissolved in deionized water to make 100mL mixed salt solution, and 2.16g NaOH and 1.91g NaOH were weighed 2 CO 3 Dissolve in deionized water to make 100mL alkali solution.
[0025] 2. Slowly add the two mixed solutions into the stirring four-necked flask at the same time, adjust the dropping rate, and keep the pH value at about 8; keep stirring at a constant temperature of 80°C during the dropping process, and stop stirring after the dropping , aged at 80°C for 24h; the resulting mixed slurry was centrifuged and washed 3 times, stirred and dispersed in ethanol for 3 times using a water-miscible organic solvent (AMO) method, and dried at 60°C for 12 hours after centrifugation to obtain nickel iron hydrotalcite precursor.
[0026] 3. Grind the dried nickel-iron hydrotalcite precursor with an agate mortar to a uniform powder, put the obt...
Embodiment 2
[0033] 1. Prepare hydrotalcite by co-precipitation / double drop method: weigh 5.24g Ni(NO 3 ) 2 ·6H 2 O and 2.42gFe(NO 3 ) 3 9H 2 O was dissolved in deionized water to form a 100ml mixed salt solution, and 1.92g NaOH and 1.27g NaOH were weighed 2 CO 3 Dissolve in deionized water to make 100ml alkali solution.
[0034] 2. Same as embodiment 1.
[0035] 3. Same as Example 1, prepare iron-doped nickel oxide, marked as 3-NF-300.
[0036] 4. Same as embodiment 1.
[0037] 5. Same as embodiment 1.
[0038] 6. Same as embodiment 1.
[0039] 7. Same as embodiment 1.
[0040] To characterize the product: as figure 1 Middle 3-NF-LDH is the XRD figure of the nickel-iron hydrotalcite of step 2 gained, as figure 2 3-NF-300 is the XRD pattern of the iron-doped nickel oxide obtained in step 3.
Embodiment 3
[0042] 1. Prepare hydrotalcite by co-precipitation / double drop method: weigh 5.24g Ni(NO 3 ) 2 ·6H 2 O and 1.82gFe(NO 3 ) 3 9H 2 O was dissolved in deionized water to make 100mL mixed salt solution, and 1.80g NaOH and 0.954g NaOH were weighed 2 CO 3 Dissolve in deionized water to make 100mL alkali solution.
[0043] 2. Same as embodiment 1.
[0044] 3. Same as Example 1, prepare iron-doped nickel oxide, marked as 4-NF-300.
[0045] 4. Same as embodiment 1.
[0046] 5. Same as embodiment 1.
[0047] 6. Same as embodiment 1.
[0048] 7. Same as embodiment 1.
[0049] To characterize the product: as figure 1 Middle 4-NF-LDH is the XRD figure of the nickel-iron hydrotalcite of step 2 gained, as figure 2 4-NF-300 is the XRD pattern of the iron-doped nickel oxide obtained in step 3.
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