Peptization and washing of Superparamagnetic iron oxide nanoparticles with ethanol.

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Bashiru Kayode Sodipo

Tq Dr Daniel, i want my particles to have negative charge (OH-) surface charge and pH of 14 before subsequently coat it with silica np.

Dear Dr Daniel,

am glad with your respond sir. Recently, i have been able to suspend my superparamagnetic iron oxide nanoparticles with perchlorate acid but now i need to peptize it using a base. Alternatively, i got these 2 papers where tetramethylammonium hydroxide were used.

1. http://www.hindawi.com/journals/jnm/2012/454759/

2. http://144.206.159.178/ft/191/599388/12453858.pdf.

at present i need to determine the concentration to use.

regards sir