A preparation method of heteroatom-doped graphene-based material loaded noble metal nanoparticles
A graphene-based, nano-particle technology, applied in the field of materials science, can solve the problems of high catalyst price and low catalytic activity, and achieve the effect of simple preparation process and high economic value
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Embodiment 1
[0025] A Pd / B, N-G boron-nitrogen-doped graphene-supported palladium nanoparticle material contains Pd, C, B, N, H and O elements.
[0026] The above-mentioned boron-nitrogen-doped graphene-supported palladium nanoparticle material preparation method specifically comprises the following steps:
[0027] (1) Preparation of graphene
[0028] Graphene oxide is obtained from graphite flakes through an improved oxidation method. Add 1-3g of graphite flakes to 1-5g of potassium persulfate and 1-5g of phosphorus pentoxide, then add 100-200ml of concentrated sulfuric acid (98%), oxidize at a high temperature of 50-100°C, and then use 1-10g of potassium permanganate is oxidized, and graphene is obtained through several times of centrifugal cleaning.
[0029] (2) Heteroatom-doped graphene materials
[0030] After 20-40mg of graphene is ultrasonically treated, add 1-100g of heteroatom precursors of boric acid and urea with a mass ratio of 1:1, and carry out B and N co-doping in a hydro...
Embodiment 2
[0043] A Pt / N-G of nitrogen-doped graphene-supported platinum nanoparticle material, containing Pt, C, N, H and O elements.
[0044] The above-mentioned preparation method of nitrogen-doped graphene-supported platinum nanoparticle material specifically comprises the following steps:
[0045] (1) Graphene Preparation
[0046] Graphene oxide is obtained from graphite flakes through an improved oxidation method. Add 1-3g of graphite flakes to 1-5g of potassium persulfate and 1-5g of phosphorus pentoxide, then add 100-200ml of concentrated sulfuric acid, oxidize at a high temperature of 50-100°C, and then use 1-10g of high-temperature Potassium manganate is oxidized, and graphene is obtained through several times of centrifugal cleaning.
[0047] (2) Preparation of nitrogen-doped graphene
[0048] After 20-40 mg of graphene-based material is ultrasonically treated, 1-10 g of urea heteroatom precursor is added, and N doping is carried out in a hydrothermal kettle at a high tempe...
Embodiment 3
[0052] A Pt / P, N-G material of phosphorus and nitrogen doped graphene supported platinum nanoparticles, containing Pt, C, P, N, H and O elements.
[0053] The above-mentioned preparation method of phosphorus-nitrogen-doped graphene-supported platinum nanoparticle material specifically comprises the following steps:
[0054] (1) Preparation of graphene
[0055] Graphene oxide is obtained from graphite flakes through an improved oxidation method. Add 1-3g of graphite flakes to 1-5g of potassium persulfate and 1-5g of phosphorus pentoxide, then add 100-200ml of concentrated sulfuric acid (98%), oxidize at a high temperature of 50-100°C, and then use 1-10g of potassium permanganate is oxidized, and graphene is obtained through several times of centrifugal cleaning.
[0056] (2) Preparation of phosphorus and nitrogen doped graphene
[0057] After 20-40mg of graphene is ultrasonically treated, the heteroatom precursors of sodium hypophosphite and urea with a mass ratio of 1:1 are...
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