Carboxyl-modified functionalized graphene quantum dot as well as preparation method and application thereof
A technology of carboxyl modification and quantum dots, which is applied in the field of biomedical detection, can solve the problems of poor reproducibility, low detection sensitivity, and high cost of detecting troponin, and achieve the effect of simple preparation method, accurate detection effect and high fluorescence intensity
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0030] The preparation of graphene oxide (GO): in 30mg sulfuric acid, add the graphite of 2g and the sodium nitrate of 0.5g, in ice bath, continuously stir reaction 4h, then slowly add 5g potassium dichromate and stir and mix with reaction system, be warming up to Stir at 25°C for 1 hour, then add 200ml of deionized water, heat up to 30°C, keep warm for 1 hour, then heat up to 90°C, reflux for 2 hours, after the reflux reaction is complete, cool to 25°C, add 25ml of 30 (w / v)% supernatant Hydrogen oxide solution, filtered after stirring, rinsed the filter cake with 5% hydrochloric acid and deionized water respectively, then dried the filter cake to obtain graphene oxide (GO);
[0031] Weigh 30 mg of prepared graphene oxide (GO) and 30 ml of water, mix and stir evenly to obtain a graphene oxide dispersion, then weigh 3 ml of NMP, mix and stir, disperse in an ultrasonic instrument for 10 min, and transfer the dispersion system to a lined polymer. In an autoclave of tetrafluoroeth...
Embodiment 2
[0041] Preparation of graphene oxide (GO): add 2 g of graphite and 1 g of sodium nitrate to 50 mg of sulfuric acid, continuously stir and react in an ice bath for 3 h, then slowly add 10 g of potassium permanganate and stir and mix with the reaction system, and heat up to 20 ℃, keep stirring for 0.5h, then add 200ml of deionized water, heat up to 35°C, keep warm for 0.5h, then heat up to 80°C, reflux for 3h, after the reflux reaction is completed, cool to 25°C, add 20ml of 30(w / v)% Hydrogen peroxide solution, filtered after stirring, rinsed the filter cake with 5% hydrochloric acid and deionized water respectively, then dried the filter cake to obtain graphene oxide (GO);
[0042] Weigh 30 mg of prepared graphene oxide (GO) and 24 ml of water, mix and stir evenly to obtain a graphene oxide dispersion, then weigh 12 ml of DMF, mix and stir, disperse in an ultrasonic instrument for 10 min, and transfer the dispersion system to the liner. In an autoclave of tetrafluoroethylene, h...
Embodiment 3
[0045] Preparation of graphene oxide (GO): add 2 g of graphite and 2 g of sodium nitrate to 70 mg of nitric acid, stir and react continuously in an ice bath for 5 h, then slowly add 15 g of perchloric acid and mix with the reaction system, heat up to 30 °C Keep stirring for 1.5h, then add 200ml deionized water, heat up to 40°C, keep warm for 1.5h, then heat up to 100°C, reflux for 1h, after the reflux reaction is completed, cool to 25°C, add 30ml of 30(w / v)% supernatant Hydrogen oxide solution, filtered after stirring, rinsed the filter cake with 5% hydrochloric acid and deionized water respectively, then dried the filter cake to obtain graphene oxide (GO);
[0046] Weigh 30mg of prepared graphene oxide (GO) and 36ml of water, mix and stir evenly to obtain a graphene oxide dispersion, then weigh 6ml of ammonia water, mix and stir, disperse in an ultrasonic instrument for 10min, and transfer the dispersion system to the inner lining In a polytetrafluoroethylene autoclave, heat ...
PUM
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