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Permalink Reply by Mohamed Mokhtar Mohamed Mostafa on June 3, 2009 at 7:28am

I have an experience in nanogold catalysts and you are wellcome to open discussion

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Permalink Reply by BAIJU G.NAIR on June 5, 2009 at 4:10am

what is the minimum temperature requirement for gold nanoparticle production?

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Permalink Reply by N R Karthikeyan on June 5, 2009 at 10:16pm

Hi....to my understanding.... nanoscale Au can be produced by various techniques...to name a few VCLDI, EEW, Chemical route, phyiscal methods etc.... all these techniques doesnt yield nanoparticles of same size, shape, purity etc.... generally depending on the applications the synthesizing techniques is chosen...and each technique has its own temp requirements.... and finally one technique which most widely used for nano colloid preparation is thru reduction of Au(CN)3.. and this process is room temperature....on the other hand plasma process will require higher end temperature.... do correct me if i am wrong...

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Permalink Reply by Dr. Murugesan Subbiah on June 7, 2009 at 5:26pm

i am working on biosynthesis of gold and silver nanoparticles from algae

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Permalink Reply by Dr. Murugesan Subbiah on June 7, 2009 at 5:28pm

35 to 40C

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Permalink Reply by BAIJU G.NAIR on June 10, 2009 at 6:01am

are you talking in terms of the living temperature of algae or a generalized gold preperation

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Permalink Reply by Dr. Murugesan Subbiah on June 18, 2009 at 5:31pm

not living temperature.

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Permalink Reply by BAIJU G.NAIR on June 19, 2009 at 4:09am

is it the incubation temperature of algae? what is the optimum temperature of the algae for this methods?

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Permalink Reply by BAIJU G.NAIR on June 19, 2009 at 4:17am

Thank you KARTHIKEYAN
what will be optimum temperature for the mechanical grinding to produce gold nanoparticles

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Permalink Reply by N R Karthikeyan on July 2, 2009 at 5:53am

sorry for the delayed reply... i was suffering from chicken pox and was nt in the lab for couple of weeks... by the way... as for as mechnical grinding is concern... we have nt tried in the my lab..i mean gold mech. grinding.. bt then.. as such there is no much important is given to temperature... furthermore since gold is very very ductile metal...mech grinding will and should be done in cryo condition in order have significant size reduction...

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Permalink Reply by Shashi Nayal Rautela on July 23, 2009 at 2:58am

Hi I am shashi here. when I prepare gold nanoparticles using aquas method (HAUCl3 and sodium citrate) , I keep temp 120 -130 degree.. Genereally I prepare 20-40 nm size gold particles

regards
shashi

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Permalink Reply by najme on July 30, 2009 at 7:41am

hi
I am working on interaction of gold nanoparticles with microtubules which are one of the cytoskeletal protein that have important role in some disease. we purified this protein from the brain and hope to find a way to improve memory. if you are interested contact me

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