| http://www.w3.org/ns/prov#value | - The nanoparticles are then extracted into a hydrocarbon solvent under a cooler temperature, e.g., about 100??? C. or less, typically at room temperature, e.g., from about 25??? C. to about 60??? C., by precipitation in a polar organic solvent, such as alcohols or ketones, also commonly referred to as flocculating agents or flocculents.
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