A kind of polypyrrole-cerium dioxide-gold composite nanomaterial
A composite nanomaterial and ceria technology, which is applied in the field of polypyrrole-ceria-gold composite nanomaterials, can solve the problems of wide band gap energy, limit the development of ceria catalysts, etc., and achieve wide absorption range and excellent application. Potential, effect of improving stability
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Embodiment 1
[0018] (1) Heat 80 mL of ultrapure water to 90 °C, add 0.8 mL of 1% chloroauric acid solution, continue heating to 96 °C for 1 minute, and finally add 2.8 mL of 1% sodium citrate , heated for 15 minutes to obtain wine red gold colloidal solution;
[0019] (2) Add 0.085 g of L-arginine to 10 mL of ultrapure water, and ultrasonically mix to obtain an L-arginine solution;
[0020] (3) Dissolve 0.0035 g of cerium nitrate in 20-40 mL of ethanol aqueous solution with a volume fraction of 50%, add 1-5 mL of the prepared gold colloid solution, and add 10 mL of L-arginine solution dropwise at room temperature Wherein; the mixed solution was heated and reacted at 80°C for 2 to 4 hours under the action of magnetic stirring, and then centrifuged at 12,000 rpm for 15 minutes to remove the supernatant, and then washed several times with acetone to obtain ceria- Gold composite nanoparticles;
[0021] (4) Weigh 500 mg of the prepared ceria-gold composite nanoparticles and disperse them in 1...
Embodiment 2
[0023] The preparation steps are the same as Example 1, and the difference is: the synthetic method of the gold colloidal solution in the step (1) is: 0.5 mL mass fraction is 1% chloroauric acid solution adding 25 ~ 45 mL ultrapure water, magnetic stirring action The mixture was reacted at low temperature for 5 minutes, during which 0.8 mL of 1% sodium borohydride solution was slowly added, and the mixed solution was continuously stirred in the dark at room temperature for 1 hour to obtain a wine-red gold colloidal solution.
Embodiment 3
[0025] The preparation steps are the same as Example 1, and the difference is: the synthetic method of gold colloidal solution in the step (1) is: the L-methionine of 0.0060 g, 0.8 mL mass fraction are 1% chloroauric acid solution and 0.6 mL 0.5 M sodium hydroxide solution was added into 3.6 mL of ultrapure water, and the reaction was performed under magnetic stirring at 37 °C for 6 hours, then 0.5 mL of 1 M sulfuric acid solution was added, and the supernatant was removed by centrifugation at 6000 rpm for 2 minutes solution, washed several times with 0.1 M sulfuric acid solution, added 5 mL of ammonia water with a mass fraction of 1.4% to the precipitate, and reacted with magnetic stirring at 70 °C for 30 minutes to obtain a yellow gold colloidal solution. Save for later.
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