Preparation method and application of Pt/3D (Three dimensional) graphene composite catalyst
A graphene composite and catalyst technology, applied in physical/chemical process catalysts, chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, etc., to achieve effective exfoliation, increase catalytic active surface area, and excellent three-dimensional porous structure Effect
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0031] 1. Experimental reagents and material characterization
[0032] 1 experimental reagent
[0033] Sodium laurylalanine was purchased from Beijing Huamei Biochemical Co., Ltd. h 2 PtCl 6 ·6H 2 O, H 2 SO 4 , NaOH, ethylene glycol and methanol were purchased from Sinopharm Chemical Reagent Co., Ltd. (Shanghai). All other reagents were of analytical grade, and the experimental water was secondary water.
[0034] 2 Material Characterization
[0035] The SEM spectrum is given by JEOL JSM-7001F, and the TEM spectrum is given by JEOL JEM-2100. The electrochemical properties of the catalysts were characterized using a traditional three-electrode system (CHI 660C).
[0036] 2. Preparation of Pt / 3D graphene composite catalyst
[0037] Utilize the improved Hummer method to prepare graphene oxide (GO), first add 2.5g expanded graphite and 5g sodium nitrate in 500mL beaker, then add 120mL mass concentration to it to be the concentrated sulfuric acid of 98% then, the mixture t...
Embodiment 2
[0049] The steps are the same as in Example 1, except that after the graphene oxide is prepared, the following steps are used to prepare Pt / 3D GN.
[0050] Take 50 mg of pre-prepared GO and disperse it in 50 mL of ethylene glycol-water solution (volume ratio 1:1), stir for 30 minutes, then add 5 mL of sodium laurylalanine aqueous solution with a mass concentration of 5%, and stir for 60 minutes . NaOH (0.5M) was added dropwise to adjust the pH of the solution to 10.5, and the solution was sonicated for 2 hours. Then, with stirring, 2 mL of 0.038M H 2 PtCl 6 aqueous solution. Finally, the above solution system was transferred to a stainless steel hydrothermal reaction kettle, and reacted at 140° C. for 5 hours. The obtained black precipitate was washed several times with ethanol-water solution, and then dried under vacuum at 60 °C for 24 hours, and the obtained composite material was labeled as Pt / 3D GN.
[0051] From the TEM spectrum, it can be found that for Pt / 3D GN, Pt...
Embodiment 3
[0053] The steps are the same as in Example 1, except that after the graphene oxide is prepared, the following steps are used to prepare Pt / 3D GN.
[0054] Take 50 mg of pre-prepared GO and disperse it in 50 mL of ethylene glycol-water solution (volume ratio 1:1), stir for 30 minutes, then add 5 mL of sodium laurylalanine aqueous solution with a mass concentration of 5%, and stir for 60 minutes . NaOH (0.5M) was added dropwise to adjust the pH of the solution to 11.5, and the solution was sonicated for 2 hours. Then, with stirring, 2 mL of 0.038M H 2 PtCl 6 aqueous solution. Finally, the above solution system was transferred to a stainless steel hydrothermal reaction kettle, and reacted at 180° C. for 9 hours. The obtained black precipitate was washed several times with ethanol-water solution, and then dried under vacuum at 60 °C for 24 hours, and the obtained composite material was labeled as Pt / 3D GN.
[0055] From the TEM spectrum, it can be found that for Pt / 3D GN, Pt...
PUM
| Property | Measurement | Unit |
|---|---|---|
| particle diameter | aaaaa | aaaaa |
| particle size | aaaaa | aaaaa |
| particle diameter | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More