Preparation method of gold-platinum-silver material with asymmetric structure
An asymmetric structure and seed technology, applied in the field of preparation of gold-platinum-silver materials, can solve the problems of low synthesis efficiency and uneven synthesis results of gold-platinum-silver materials, and achieve simple synthesis methods, strong reliability, The effect of enhancing the catalytic activity
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
preparation example Construction
[0036] see figure 1, shows a method for synthesizing a gold-platinum-silver material with an asymmetric structure proposed by the present invention, which specifically includes the following steps:
[0037] Step S1, using the seed growth method to prepare gold nanorods (see figure 2 ).
[0038] Step S2, take the gold nanorods that have been cleaned and dispersed in low-concentration CTAB as new seeds, add a corresponding amount of CTAB, silver nitrate solution, and potassium tetrachloroplatinate solution on the seeds, and control the reaction temperature Synthetic gold-platinum bimetallic structure;
[0039] Step S3, take out the gold-platinum that has been cleaned and dispersed in low-concentration CTAB as new seeds, then add CTAC, and heat at 60°C for 20 minutes; then control the rate of adding silver nitrate and ascorbic acid, and heat for two hours to synthesize gold - Platinum-silver material.
[0040] Wherein, the step S1 further includes the following steps:
[00...
Embodiment 1
[0053] Mix 10mL CTAB (0.1M) with 0.25mL HAuCl 4 (10mM) is mixed in the bottle, and a certain mass of NaBH 4 Mix to form a 0.01M solution, and add 0.6mL to the bottle and stir vigorously. The solution turns from golden yellow to brown, which is the seed solution. 2.5 mL of CTAB (0.1 M) and 0.037 g of NaOL were dissolved in 21.25 mL of water at 50°C. After dissolution, the solution was cooled to 30 °C, and then 0.9 mL AgNO was added 3 (4mM) solution. and kept at 30°C for 15 minutes, then added 0.25mL HAuCl 4 (10mM). After 60-90 minutes of stirring (400 rpm), the solution changed from golden yellow to colorless. This is the growth solution. The pH was adjusted by adding 0.3 mL of HCl (37 wt.%) to the growth solution. After that, 75 μL of AA (64 mM), 40 μL of seed solution were added sequentially and stirred vigorously. The final solution was left to stand for 12 hours in a 30°C water bath. The solution after growth was centrifuged (7000rpm, 30 minutes), and CTAB (1-2mM)...
Embodiment 2
[0055] Mix 10mL CTAB (0.1M) with 0.25mL HAuCl 4 (10mM) is mixed in the bottle, and a certain mass of NaBH 4 Mix to form a 0.01M solution, and add 0.6mL to the bottle and stir vigorously. The solution turns from golden yellow to brown, which is the seed solution. 2.5 mL of CTAB (0.1 M) and 0.037 g of NaOL were dissolved in 21.25 mL of water at 50°C. After dissolution, the solution was cooled to 30 °C, and then 0.9 mL AgNO was added 3 (4mM) solution. and kept at 30°C for 15 minutes, then added 0.25mL HAuCl 4 (10mM). After 60-90 minutes of stirring (400 rpm), the solution changed from golden yellow to colorless. This is the growth solution. The pH was adjusted by adding 0.3 mL of HCl (37 wt.%) to the growth solution. After that, 75 μL of AA (64 mM), 40 μL of seed solution were added sequentially and stirred vigorously. The final solution was left to stand for 12 hours in a 30°C water bath. The solution after growth was centrifuged (7000rpm, 30 minutes), and CTAB (1-2mM)...
PUM
Property | Measurement | Unit |
---|---|---|
length | aaaaa | aaaaa |
diameter | aaaaa | aaaaa |
length | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com