Question

What should be used to characterize nanoparticles? Sem or fesem?

Answer 1

Answer:

The analytical tools used for characterization of nanoparticles are

(i) X-ray U.V vsible spectroOScopy-It gives the preliminary confirmation of formation of nanoparticles. Diffraction (XRD)-The information given by this tool is about particle size, crystal structure and geometry.

ii) Scanning electron microscopy (SEM) : This is used to study the structure of surface of material that is the morphology of the material.

iii) Transmission electron microSCopy (TEM) gives information about the particles size.

(iV) (FTR) Fourier transtorm intrared spectroscopy gives intormmation about absorption or functional groups and binding nature of the nanomaterial.

Answer 2

Answer:

The characterization of nanoparticles is a branch of nanometrology that deals with the characterization, or measurement, of the physical and chemical properties of nanoparticles. Nanoparticles measure less than 100 nanometers in at least one of their external dimensions, and are often engineered for their unique properties. Nanoparticles are unlike conventional chemicals in that their chemical composition and concentration are not sufficient metrics for a complete description, because they vary in other physical properties such as size, shape, surface properties, crystallinity, and dispersion state.