  The following laboratory procedure provides students with a hands-on
experience in nanomaterials chemistry and characterization. This three-day
protocol is easy to follow for undergraduates with basic chemistry or materials
science backgrounds and is suitable for inclusion in upper division courses in
inorganic chemistry or materials science. Students use air-free chemistry
procedures to synthesize and separate iron oxide magnetic nanoparticles and
subsequently modify the nanoparticle surface using a chemical stripping agent.
The morphology and chemical composition of the nanoparticles are characterized
using electron microscopy and dynamic light scattering measurements.
Additionally, magnetic characterization of the particles is performed using an
open-source (3D-printed), inexpensive magnetophotometer. Possible modifications
to the synthesis procedure including the incorporation of dopants to modify the
magnetic response and alternative characterization techniques are discussed.
The three-day synthesis, purification, and characterization laboratory will
prepare students with crucial skills for advanced technology industries such as
semiconductor manufacturing, nanomedicine, and green chemistry.
