I am preparing IONP's by above mentioned method, i am unable to maintained the PH of the base solution as I need. Although, i prepared different molar concentrations of NaOH still the PH is between 11-12 but i wanna to maintained it at 9.5. So, now i want to replace the base with ammonium hydroxide but i didnt know how to use aforementioned base?
needs appropriate suggestions
Dear Maryam Mehrban, why not using pH buffers ? They are designed for such a task, i.e., to maintain and stabilize the pH. My Regards
Hi Marayam. As I found , you are going to synthesis hexaferrite for EMI shielding.
You can use ammonium hydroxide (25 wt%) until pH = 9.5.
Also, there is another sign to stop adding ammonium hydroxide which is the change of the solution color to dark green.
Hi Marayam
you can see these papers.
Experimental Investigation of the Coprecipitation Method: An Approach to Obtain Magnetite and Maghemite Nanoparticles with Improved Properties
Co-precipitation in aqueous solution synthesis of magnetite nanoparticles using iron(III) salts as precursors
Synthesis, Characterization and Effect of Precipitating Agent on the Antibacterial Properties of Cobalt Ferrite Nanoparticles
Nano-sized ZnO powders prepared by coprecipitation method with various pH
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