Synthesis of gold nanoparticles - Part 1
HTML-код
- Опубликовано: 8 фев 2025
- This video demonstrates the chemical synthesis of colloidal gold nanoparticles employing the Turkevich method, which involves the reduction of the precursor salt Tetrachloroauric acid into gold nanoparticles by means of the reducing agent Trisodium citrate.
Waiting for next such beautiful videos ❤
God bless you this month
Jesus Christ loves you my dear ❤️
This month also
Nice video by the grace of God
❤
Beautiful gold nanoparticles blessed by Jesus Christ
❤
At 3:02, how much deionized water is being used in that flask? Is it 100 ml??
Please tell the od and the size of the nanoparticles formed by this method?
The Turkevich method typically produces particles in the size range of about 10 to 20 nm. OD depends on the concentration and size of the nanoparticles. For gold nanoparticles around 10-20 nm in size, the OD can range from 1.5 to 2 in the SPR region (usually around 515-530 nm).
August 2024 squad? Anyone?
Me in October 2024
Question? Can these particles be safely consumed by humans if created with the Turkevich method? In other words, does all of the chloride become converted? Or is there and residual chemicals that’s are unsafe in this reaction?
1. Though gold nanoparticles have been reported to be biocompatible with low toxicity in controlled medical contexts, long-term studies on the effects of consuming AuNPs are limited. Gold nanoparticles can interact with biological systems in unpredictable ways. However, consuming gold nanoparticles, especially in unregulated or experimental forms, raises significant concerns regarding safety, toxicity, and potential side effects. Moreover, at present, gold nanoparticles are not approved by regulatory agencies like the FDA for human consumption.
2. The extent of gold chloride conversion depends on the reaction conditions, including the concentrations of the gold precursor and the reducing agent (trisodium citrate), temperature, pH, and reaction time. Some amount of unreacted gold chloride or other intermediates might remain, given that the reaction is not fully optimized. However, since the Turkevich method is a widely used, well-optimized classic method developed by John Turkevich in 1951 for the synthesis of gold nanoparticles, all of the gold chloride is possibly converted into gold nanoparticles.
lol “ 6:31 “ solution is carefully transferred” proceeds to spill it all down the side of the container . Haha just having fun. Great job tho making the colloids.
😊😊😊
Gold nanoparticles will aggregate if they are exposed to sunlight
Gold nanoparticles aggregate in sunlight only when they are exposed to high-intensity sunlight or UV rays. Moreover, the extent of aggregation depends on various other factors such as the size and shape of the nanoparticles, the medium in which they are dispersed, and the intensity and duration of sunlight exposure.