Preparation method and application for Ni2P/NiCo-LDH (layered double hydroxides) composite photocatalysis material
A composite photocatalysis and reaction technology, applied in metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, physical/chemical process catalysts, etc.
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Embodiment 1
[0029] (1) Ni 2 Preparation of P precursor: Dissolve 0.72 g nickel nitrate hexahydrate in 108 mL deionized water, add dropwise 75 mL 0.5 mol / L dilute ammonia solution, stir in a water bath at 70 °C for 10 h, centrifuge to separate the precipitate, deionized water, Wash with ethanol and dry at 90°C for later use;
[0030] (2) Ni 2 P preparation: 0.199 g sodium hypophosphite and 0.03 g Ni prepared in step (1) 2 The P precursor was thoroughly ground and mixed, reacted in a tube furnace under the protection of Ar, and was calcined at 300 °C for 5 h to obtain a black solid powder, which was washed and vacuum-dried at 70 °C to obtain Ni 2 P material, the Ni 2 Material P was added to water to disperse into Ni with a concentration of 1 mg / mL 2 P mixture, spare;
[0031] (3) Ni 2 Preparation of P / NiCo-LDH composite photocatalytic material: Dissolve 0.90 mmol nickel nitrate hexahydrate, 0.60 mmol cobalt nitrate hexahydrate, and 8.0 mmol ammonium chloride in 40 mL deionized water, ...
Embodiment 2
[0035] (1) Ni 2 P precursor: Dissolve 0.72 g nickel nitrate hexahydrate in 72 mL deionized water, add dropwise 75.mL 0.5 mol / L dilute ammonia solution, stir in a water bath at 90 °C for 12 h, centrifuge to separate the solid, deionized water, Wash with ethanol and dry at 60°C for later use;
[0036] (2) Ni 2 P preparation: 0.199 g sodium hypophosphite and 0.03 g Ni prepared in step (1) 2 The P precursor is fully ground and mixed, and the N 2 The reaction was carried out in a tube furnace under protection, the heating rate was 2 ℃ / min, and after calcination at 300 ℃ for 5 h, a black solid powder was obtained, which was washed and vacuum-dried at 60 ℃ to obtain Ni 2 P material, the Ni 2 Material P was added to water to disperse into Ni with a concentration of 1 mg / mL 2 P mixture, spare;
[0037] (3) Ni 2 Preparation of P / NiCo-LDH composite photocatalytic material: Dissolve 0.90 mmol nickel nitrate hexahydrate, 0.90 mmol cobalt nitrate hexahydrate, and 8.0 mmol ammonium ch...
Embodiment 3
[0041] (1) Ni 2 P precursor: Dissolve 0.72 g nickel nitrate hexahydrate in 100 mL deionized water, add dropwise 75 mL 0.5mol / L dilute ammonia solution, stir in a water bath at 80 °C for 12 h, centrifuge to separate the solid, deionized water, ethanol Wash and dry at 60°C for later use;
[0042] (2) Ni 2 P preparation: 0.199 g sodium hypophosphite and 0.03 g Ni prepared in step (1) 2 The P precursor is fully ground and mixed, and the N 2 Reaction in a tube furnace under protection, black solid powder was obtained after calcination at 300 °C for 5 h, washed and vacuum dried at 60 °C to obtain Ni 2 P material, the Ni 2 Material P was added to water to disperse into Ni with a concentration of 1 mg / mL 2 P mixture, spare;
[0043] (3) Ni 2 Preparation of P / NiCo-LDH composite photocatalytic material: Dissolve 0.90 mmol nickel nitrate hexahydrate, 0.60 mmol cobalt nitrate hexahydrate, and 8.0 mmol ammonium chloride in 40 mL deionized water, stir, and then dropwise add 20 mL 0.5...
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