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Permalink Reply by Bharani Kumar on June 7, 2012 at 7:10am

Here you did not mentioned particle size, However

Any nano particles can separate using centrifuge. depends upon particle size we have to choose PRM. for example, big particle low rpm enough and below 10nm you have to choose 15000-20000 rpm.you can also separate nanoparticles based on particle size using different rpm and time.

you have to repeat three times to remove unreacted compounds.then rediperse in MeOH and again centrifuge it will dry at room temperature.

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Permalink Reply by L.C.NEHRU on June 7, 2012 at 7:14am

Hellow sir

Fine u prepared Cu NP. There is so many types of prepared nanoparticles in simple way. In our best can u try to solution combustion method is a simple and ultra fast method of prepared any nanoparticles.

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Permalink Reply by Vyom Parashar on June 7, 2012 at 8:02am

Dear Asim

For your prepared Cu nanoparticles in DI water, my suggestion is that you first get sure that they are in the mettalic form. As Cu nanoparticles are very much prone to oxidation giving copper oxide.

Second, you can go for lyophilization, to extract your nanoparticles and then do verify with XRD its nature

best of luck

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Permalink Reply by L.C.NEHRU on June 7, 2012 at 8:58am

Hellow sir

I have one dougth. In centrifuge, rpm value is effect of the particle size?. Can u enplane or any report is available? 

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Permalink Reply by Bharani Kumar on June 7, 2012 at 9:49am

 rpm  never effect NP properties.

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Permalink Reply by L.C.NEHRU on June 7, 2012 at 9:53am

hellow sir

Thanks for your reply message

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Permalink Reply by L.C.NEHRU on June 7, 2012 at 9:56am

Sir

If any PDF positions in ure working area in the filed of nanoscience r thin films? If any position is available please inform 2 me (lcnehru@yahoo.com). Thanks

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Permalink Reply by Divinah Manoharan on June 7, 2012 at 11:04am

Centrifuge and you can easily separate particles. Decant the solution and then dry the particles in a hot air oven.

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Permalink Reply by Asim Umer on June 7, 2012 at 12:46pm

Thanks a lot sir.

The particles size is between 2-3 nm. I will try 15000-20000 rpm and will let you know.

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Permalink Reply by Asim Umer on June 7, 2012 at 12:47pm

Thank you very much to all

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Permalink Reply by Asim Umer on June 7, 2012 at 12:48pm

Thank you Sir

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Permalink Reply by Asim Umer on June 7, 2012 at 12:52pm

Thank you Sir.

Could you please send me paper on this technique

asimumer@uet.edu.pk

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