Can nanoparticles show XRD planes that don't appear for the bulk size of the same material ?

No !!!

With the same conditions of the x-ray measurements not!

Just having a new structure

Hi, I agree with Carlos Ariel Samudio Pérez Ideally it shouldn't because more peaks means more planes and a unit cell's feature would not change based on its size. There can be peak shifts and changes in the peak width but not the number of peaks. May be there is a phase transformation (different crystal structure) which can very well happen from bulk to nano.

Variation in the intensity is expected with variation in amount of crystallization ...more plans to reflect more intensity...so as nano means smaller scale....less planes....hence hump kind of pattern...but change in peak means, change in crystal structure...may means in change in material...so for one material one pattern...otherwise data cards will not have any meaning.

No it is not possible, XRD give sharper peaks for bulk material and less peaks for Nano materials. If bulk is not showing peaks which you want, plz reconsider the purity of that material or structure of material is changed.

Of course, nanomaterials provide exactly the same diffraction lines as the normal grain material. Diffraction lines can only be broaded, sometimes so that some lines may be missing. But there is one but. The proportion of unsaturated and broken bonds in real nanomaterials is growing. These are compensated in some way, most often OH-. In fact, a material with a grain size comparable to the dimensions of a unit cell can also be formed by some proportion of hydroxides. However, I have strong doubts that this can be proven by powder diffraction.

I dont think that nanoparticles can show noticeable sharp peak

I agree with Nadir Fadhil Habubi !!

Very good idea dear Steven Van Petegem

This situation is worth discussing.