StillThinking

I have been in touch, meanwhile, with a researcher/ professor at a university who is very involved in the field of nanoparticles. I found one of his published papers online and thought it to be of great interest, and decided to try to make contact with him to see if he could possibly give me ideas on how to best try to recreate the experiment I have in mind in a home environment with the products I had on hand. He was very kind, patient, and helpful. Anyway, I am all set now and wanted to thank you for your time.

Thank you for putting the chemical formula in its correct form. I am looking to experiment with staving off mold on things we store in our basement with the final product, that being stable AgNP, for which I know silver nanoparticles are quite effective. I could, quite simply, get PVP (polyvinyl pyrrolidone) coated AgNP, being that PVP has shown to be very effective for stabilizing AgNP and also acts as a good dispersant, with many experiments showing the effectiveness of PVP capped AgNP, however PVP is derived from petroleum, which I am not looking to work with. The experiment that was carried out that I am looking to reproduce used [Ag(NH3)2] to mix with a particular vegetable extract, which eventually synthesized stable AgNP. I have everything I need to go forward with this experiment, except what amounts I need of the reagents.

I appreciate your input. No worries, I have spent many, many hours in a chemistry lab in college. I am also quite familiar with working with NaOH since I make soaps, for which, of course, one needs lye in order for saponification to be achieved. I have seen the compound I am looking to make be made many times; I simply do not know the amounts of the reagents that were used. What I am looking to do with the Ag(NH3)2 is to recreate an experiment where AgNP were created in a stable form using biosynthesis. Quite remarkable. For that experiment, however, I need Ag(NH3)2, aka diamminesilver, which I am sure you know gets used quite frequently to determine the presence of aldehyde or alpha-hydroxy ketone functional groups. Anyway, thank you for you input and time. I appreciate it.

Thank you, I appreciate your reply. I do realize the calculations for moles, etc., but what I am unsure about is the following: In order for me to make Ag(NH3)2, I will be taking aqueous AgNO3, adding aqueous NaOH, stirring, then adding liquid ammonia until the solution clears. How do I know how much and what dilution of all the components to add in order to achieve Ag(NH3)2 and that be .1M?

I will be making Ag(NH3)2 (diamminesilver), but am trying to figure out how to get 19 mL of a .1M solution of it? I am not sure how to achieve the .1M aspect of Ag(N3)2 in order to measure out 19 mL if it. Any help as to what steps I need to do along the way when making the Ag(NH3)2 to achieve the .1M would be appreciated.

After doing a lot more research, doing all kinds of formulations to do with volume, mass, etc., I think we finally figured out that PPM, being mg/l, is simply weighing the substance and adding it to a liter of water. So if we wanted a 200PPM suspension, we add 200 mg to a liter of water. I think we thought it couldn't possibly be that simple, but I think we were wrong.... it is that simple!

Hello Everyone- I have been seeking the answer to the following many places on the internet, but am having trouble finding it and am hoping someone here can help. I have 1 gram of gold, the particles of which are 100 nanometers in size. I am trying to find out the following: If I wanted to make a suspension of gold in water so it will turn out to be 100 PPM, how do I go about figuring out how much weight of the gold nanoparticles to add to the water to achieve that PPM rate?