Ultrathin hydrotalcite-based composite photoelectrode and application thereof in coupling of photoelectrolysis of water and organic matter oxidation reaction
A talc-based, composite light technology, applied in electrolytic organic production, electrodes, electrolytic components, etc., can solve problems that have not received enough attention, and achieve improved overall energy efficiency and molecular reaction efficiency, high atom economy, and easy operation Effect
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[0026] Example 1
[0027] A. Weigh 0.306g Co(NO 3 ) 2 ·6H 2 O, 0.132g Al(NO 3 ) 3 ·9H 2 O, 0.424g urea, 0.07g NH 4 F. In a 250mL beaker, add 70mL of deionized water, mix well, then add 1mL of graphene aqueous dispersion with a concentration of 1mg / mL, sonicate and stir until a homogeneous solution is formed, ultrasonic power is 50W, time is 10min, temperature is 20℃ .
[0028] B. Put BiVO 4 The conductive surface of the electrode is inclined up 45°, put into the inner tank of the hydrothermal kettle, and add 4 mL of the solution prepared in step A and 3 mL of acetone (mass fraction ≥ 99.9%) to grow BiVO 4 The part is completely immersed in the solution, ultrasonic power is 50W, time is 5min, mixed well, hydrothermally reacted at 100℃ for 4h, after natural cooling, the electrode is taken out, rinsed with ethanol 3 times, 10mL each time, and finally deionized After rinsing with water, dry it in an oven at 60℃ for 1 hour to obtain G@U-LDHs / BiVO 4 Photoelectrode.
[0029] C. At room tem...
Example Embodiment
[0033] Example 2
[0034] A. Weigh 0.343g Ni(NO 3 ) 2 ·6H 2 O, 0.135g Al(NO 3 ) 3 ·9H 2 O, 0.435g urea, 0.07g NH 4 F. In a 250mL beaker, add 70mL of deionized water, mix well, then add 1mL of graphene aqueous dispersion with a concentration of 1mg / mL, sonicate and stir until mixed to form a uniform solution, ultrasonic power 50W, time 10min, temperature 20 ℃.
[0035] B. Put BiVO 4 The conductive surface of the electrode is inclined up 45°, put into the inner tank of the hydrothermal kettle, and add 4 mL of the solution prepared in step A and 3 mL of acetone (mass fraction ≥ 99.9%) to grow BiVO 4 The part is completely immersed in the solution, ultrasonic power is 50W, time is 5min, mixed well, hydrothermally reacted at 100℃ for 4h, after natural cooling, the electrode is taken out, rinsed with ethanol 3 times, 10mL each time, and finally deionized After rinsing with water, dry it in an oven at 60℃ for 1 hour to obtain G@U-LDHs composite BiVO 4 Photoelectrode.
[0036] C. At room te...
Example Embodiment
[0039] Example 3
[0040] A. Weigh 0.446g Zn(NO 3 ) 2 ·6H 2 O, 0.134g Al(NO 3 ) 3 ·9H 2 O, 0.426g urea, 0.068g NH 4 F. In a 250mL beaker, add 70mL of deionized water, mix well, then add 1mL of graphene dispersion with a concentration of 1mg / mL, sonicate and stir until mixed to form a homogeneous solution, ultrasonic power 50W, time 10min, temperature 20℃ .
[0041] B. Put BiVO 4 The conductive surface of the electrode is inclined up 45°, put into the inner tank of the hydrothermal kettle, and add 4 mL of the solution prepared in step A and 3 mL of acetone (mass fraction ≥ 99.9%) to grow BiVO 4 The part is completely immersed in the solution, ultrasonic power is 50W, time is 5min, mixed well, hydrothermally reacted at 100℃ for 4h, after natural cooling, the electrode is taken out, rinsed with ethanol 3 times, 10mL each time, and finally deionized After rinsing with water, dry it in an oven at 60℃ for 1 hour to obtain G@U-LDHs composite BiVO 4 Photoelectrode.
[0042] C. At room tempe...
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