A silver/platinum alloy nanomaterial with porous hollow structure and preparation method thereof
A hollow structure, nanomaterial technology, applied in nanotechnology, structural parts, nanotechnology, etc. for materials and surface science, can solve the problems of short life, low efficiency, high cost, and achieve low cost, cost reduction, operation easy effect
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Embodiment 1
[0020] Get 0.0285g of sodium citrate and 0.0180g of silver nitrate, dissolve them in 30mL of deionized water, place them in a flask and stir at room temperature; The solution turned from colorless and transparent to black, and then to brownish yellow. After continuous stirring for 6 hours, a silver seed crystal solution was obtained, which was taken out and stored at 4°C.
[0021] Add 0.0372g of potassium hexachloroplatinate, 0.0800g of ascorbic acid, and 0.0510g of polyvinylpyrrolidone (K=30) to the prepared silver seed crystal solution, and heat to 80°C while stirring. After the reaction solution turns from brownish yellow to black Keep stirring at 80°C, remove the reaction bottle after 0.5h, transfer the reaction solution to a centrifuge tube, and rotate it at a speed of 11000rpm for 60min. / Platinum alloy nanomaterials.
[0022] figure 1 The transmission electron microscope picture of the silver / platinum alloy nanomaterial with porous hollow structure is given in Exampl...
Embodiment 2
[0023] Get 0.0143g of sodium citrate and 0.0050g of silver carbonate, dissolve in 20mL of deionized water, place in a flask and stir at room temperature; The solution turned from colorless and transparent to black, and then to brownish yellow. After continuous stirring for 24 hours, a silver seed crystal solution was obtained, which was taken out and stored at 4°C.
[0024] Add 0.0060g of potassium tetrachloroplatinate, 0.0160g of ascorbic acid and 0.0180g of polyvinylpyrrolidone (K=30) to the prepared silver seed crystal solution, and heat to 70°C while stirring. After the reaction solution turns from brownish yellow to black Keep stirring at 90°C, remove the reaction bottle after 2 hours, transfer the reaction solution to a centrifuge tube, and rotate it at a speed of 11000 rpm for 60 minutes. Platinum alloy nanomaterials.
[0025] Figure 4 The transmission electron microscope picture of the silver / platinum alloy nanomaterial with porous hollow structure is given in Examp...
Embodiment 3
[0027] Use sodium citrate and deionized water to prepare a sodium citrate solution with a concentration of 0.5000M, take 100mL into a flask, add 3.8975g of silver sulfate, stir at a constant speed at room temperature, then slowly add 5mL dropwise to dissolve 1.3875g of NaBH 4 deionized water, the solution turned from colorless and transparent to black, and then turned to brownish yellow. After continuous stirring for 48 hours, a silver seed crystal solution was obtained, which was taken out and stored at 4°C.
[0028] Add 12.9250g of chloroplatinic acid, 33.0000g of ascorbic acid and 0.1800g of polyvinylpyrrolidone (K=30) to the prepared silver seed crystal solution, and heat to 60°C while stirring, and the reaction solution changes from brownish yellow to black and remains at Stir at 90°C, remove the reaction bottle after 4 hours, transfer the reaction solution to a centrifuge tube, and rotate at a speed of 11,000 rpm for 60 minutes. After centrifugation, pour off the supernat...
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