I want find the size of copper and copper oxide nanoparticle . What are the available techniques for it? By using particle analyser, is it possible and what is the suitable liquid for it?
Although one can use XRD and DLS, but will require electron microscopy (FE-SEM or TEM) images to support the XRD and DLS results.
In fact, particle size analyzer normally gives higher experimental errors and therefore higher particle sizes than in real sense. I would like to suggest using TEM or Zeta sizer which provides higher accuracy. You may go for acetone-90% as a solvent.
XRD is another tool that can give information about the particle size, by having defined all parameters such as beta, the source radiation wavelength, FWHM and the angle, the particle size can be calculated using Sherrer's Equation.
There are different techniques available to determine particle size and particle size distribution. You can use either TEM, SEM or Dynamic Light Scattering (DLS)
Zeta sizer is the excellent option to accurately estimate the size of nanoparticles.
Flow Field-Flow Fractionation and Centrifugal Field-Flow Fractionation are the best techniques to separate and size natural and engineered NPs.
There are few possible techniques.
Dynamic Light Scattering works pretty good and laser particles size analyzer work quite well...however they are not always available like TEM and SEM.
I personally perform image analysis on TEM and SEM micrograph. Even from a simple image i use first software such as "Adobe illustrator" and then software for image analysis such as "ImageJ" (it's free) to perform the size analysis on the image i get from Adobe. Basically what i do by "Illustrator" is drawing all particles contours on the SEM image. Then i remove the SEM image and i split all overlapping circles (for spheric shape). Then i analyze the resulting image by ImageJ. It basically counts the size of those circle and gives you an output in square pixel. However by making the proportion with the circle you draw on the reference line (which becomes the diameter of the circle) and by making the proportional calculation you get the area of those circles in square nm. Then you can calculate the diameter. Take a look at the paper:
https://www.researchgate.net/publication/258332335_Synthesis_of_MnCO3_nanoparticles_by_microemulsions_quantitative_evaluation_of_the_effect_of_operating_conditions_on_particle_size_distribution?ev=prf_pub
FWHM from XRD gives you only the the average size of crystals but it doesn't work well for average crystal larger than 100 nm. Also it does not take into account policrystallinity, thus it is just an estimation.
Article Synthesis of MnCO3 nanoparticles by microemulsions: Statisti...
- Badges
- Science topic
- Similar topics
- Chemistry
- Nanotechnology
- Nanostructured Materials
- Nanoparticles