Preparation method of porous structure aunps-znonps@c/3d-ksc nanocomposite
A technology of 3D-KSC and nanocomposite materials, applied in chemical instruments and methods, organic compounds/hydrides/coordination complex catalysts, chemical/physical processes, etc., can solve problems such as poor electrical conductivity and achieve good performance advantages , Raw materials are cheap and easy to get, the effect of multiple active sites
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Embodiment 1
[0021] Dissolve 1.970g of dimethylimidazole in 10mL of ultrapure water, put a rod-shaped 3D-KSC (2mm in diameter, 4cm in length) into the dimethylimidazole solution, and then add 5.0mL of freshly prepared 2.0μg mL -1 AuNPs (with a particle size of 10 nm) suspension was mixed and stirred at room temperature for 3 minutes. Zn(COOH) 2 2H 2 O (0.2726g) was dissolved in 4.0mL ultrapure water, and finally Zn(COOH) 2 2H 2 The O solution was slowly added to the above mixed solution, and after stirring at room temperature for 10 minutes, the product was taken out and dried at room temperature; the dried sample was calcined in a tube atmosphere furnace, and heated at 5°C min in a nitrogen atmosphere. -1 The temperature was raised to 700 °C and maintained for 4 h, and the AuNPs-ZnONPs@C / 3D-KSC nanocomposite was obtained after cooling naturally to room temperature in a nitrogen atmosphere.
Embodiment 2
[0023] Dissolve 1.970g of dimethylimidazole in 15mL of ultrapure water, put a rod-shaped 3D-KSC (5mm in diameter, 2cm in length) into the dimethylimidazole solution, and add 5.0mL of freshly prepared 3.0μg mL -1 The suspension of AuNPs (with a particle size of 20 nm) was mixed and stirred at room temperature for 5 minutes. Zn(COOH) 2 2H 2 O (0.2726g) was dissolved in 3.0mL ultrapure water, and finally Zn(COOH) 2 2H 2 The O solution was slowly added to the above mixed solution, and after stirring at room temperature for 20 minutes, the product was taken out and dried at room temperature; the dried sample was calcined in a tubular atmosphere furnace, and heated at 5°C min in a nitrogen atmosphere. -1 The temperature was raised to 800 °C and maintained for 3 h, and the AuNPs-ZnONPs@C / 3D-KSC nanocomposite was obtained after cooling naturally to room temperature in a nitrogen atmosphere.
Embodiment 3
[0025] Dissolve 1.970g of dimethylimidazole in 15mL of ultrapure water, put a rod-shaped 3D-KSC (4mm in diameter, 3cm in length) into the dimethylimidazole solution, and add 3.0mL of freshly prepared 4.0μg mL -1 The suspension of AuNPs (with a particle size of 15 nm) was mixed and stirred at room temperature for 4 minutes. Zn(COOH) 2 2H 2 O (0.2726g) was dissolved in 5.0mL ultrapure water, and finally Zn(COOH) 2 2H 2 The O solution was slowly added to the above mixed solution, and after stirring at room temperature for 20 minutes, the product was taken out and dried at room temperature; the dried sample was calcined in a tubular atmosphere furnace, and heated at 5°C min in a nitrogen atmosphere. -1 The temperature was raised to 750 °C and maintained for 3 h, and the AuNPs-ZnONPs@C / 3D-KSC nanocomposite was obtained after cooling naturally to room temperature in a nitrogen atmosphere.
[0026] The ZIF-8-derived nanocomposite ZnONPs@C encapsulated AuNPs prepared by the prese...
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