Amino functionalized graphene oxide immobilized non-noble metal nano catalyst and preparation method thereof
A nano-catalyst, amine-based functional technology, applied in the field of amine-based functionalized graphene oxide immobilized non-precious metal nano-catalyst and its preparation, can solve problems such as expensive application development, achieve good electronic and structural synergy, volatility Small, simple process effects
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Embodiment 1
[0031] Step 1: At room temperature, add 40mg of graphene oxide to 50ml of water, ultrasonic for 30min; Slowly add the diamine solution into the graphene oxide dispersion, stir vigorously, and react for 40 hours to graft p-phenylenediamine onto the surface of graphene oxide to obtain a black-gray DA-GO suspension;
[0032] Step 2: Centrifuge the suspension obtained in Step 1 at 7500 rpm, decant out the black-gray solid, wash it with water for 3 times, take out the DA-GO black-gray powder, dry it in vacuum at 40°C for 5 hours, and store it in a vacuum desiccator;
[0033] Step 3: At room temperature, take 50ml of 0.5wt% polyvinylpyrrolidone aqueous solution, add 4.2mmol of nickel acetate and 0.8mmol of copper chloride respectively, ultrasonically disperse for 10min, then add 50 mg of DA-GO powder obtained in step 2, and continue to sonicate Treat for 2h to obtain the precursor suspension of DA-GO and metal;
[0034] Step 4: Transfer the DA-GO metal precursor suspension obtained...
Embodiment 2
[0038] Step 1: At room temperature, add 60mg of graphene oxide into 50ml of water, ultrasonic for 30min; dissolve 50mmol of ethylenediamine into 50ml of acetone / ether (1:1 volume ratio) mixed solvent, sonicate until completely dissolved; Slowly add the solution into the graphene oxide dispersion, stir vigorously, and react for 50 hours to graft ethylenediamine onto the surface of graphene oxide to obtain a black-gray DA-GO suspension;
[0039] Step 2: Centrifuge the suspension obtained in Step 1 at 10,000 rpm, decant out the black-gray solid, wash it with water for 5 times, take out the DA-GO black-gray powder, dry it in vacuum at 60°C for 8 hours, and store it in a vacuum desiccator;
[0040] Step 3: At room temperature, take 50ml of 1.5wt% polyvinylpyrrolidone aqueous solution, add 3.1mmol of nickel sulfate and 1.9mmol of copper nitrate respectively, ultrasonically disperse for 30min, then add 50 mg of DA-GO powder obtained in step 2, and continue ultrasonic treatment 6h, ob...
Embodiment 3
[0045] Step 1: At room temperature, add 50mg of graphene oxide into 50ml of water, sonicate for 30min; slowly add 1,2-propylenediamine solution into the graphene oxide dispersion, vigorously stir and react for 45 hours, and graft 1,2-propylenediamine onto the surface of graphene oxide to obtain black-gray DA- GO suspension;
[0046] Step 2: Centrifuge the suspension obtained in Step 1 at 8700rpm, decant out the black-gray solid, wash it with water 4 times, take out the DA-GO black-gray powder, dry it in vacuum at 50°C for 6.5h, and store it in a vacuum desiccator ;
[0047] Step 3: At room temperature, take 50ml of 1.0wt% polyvinylpyrrolidone aqueous solution, add 3.6mmol of nickel chloride and 1.4mmol of copper sulfate respectively, ultrasonically disperse for 20min, then add 50 mg of DA-GO micropowder obtained in step 2, and continue to sonicate Treat for 4h to obtain the precursor suspension of DA-GO and metal;
[0048] Step 4: Move the DA-GO metal precursor suspension o...
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