What is the difference between doped nanoparticles and composite nanoparticles/nanocomposites? How can the differentiation be done using XRD pattern?
Dear Prof. Salam,
I will be glad trying to answer on your question. In general, doping means very low amount of admixture, added to some substance. That means that admixture atoms just replace inherent atoms without forming a new phase and because of this can’t be seen directly on the XRD-pattern. But it doesn’t mean that doping can’t be confirmed by XRD- measurements, because in this case the crystal lattice of the main substance could be deformed, which may change either, the pick position or width, or both of it. But even in such a low amount, if it is properly chosen, doping can drastically change the electrical, gas-sensing, photocatalytic and photoluminesnce performances of the main substance and because of that is widely used in the mentioned fields of science. If you are able to see the picks of added substance directly on the XRD-pattern, in this case you have some kind of composite, which is different than doping.
I really hope my answer is helpful to you.
With best wishes,
Dimitre
Dear Prof. Salam,
I will be glad trying to answer on your question. In general, doping means very low amount of admixture, added to some substance. That means that admixture atoms just replace inherent atoms without forming a new phase and because of this can’t be seen directly on the XRD-pattern. But it doesn’t mean that doping can’t be confirmed by XRD- measurements, because in this case the crystal lattice of the main substance could be deformed, which may change either, the pick position or width, or both of it. But even in such a low amount, if it is properly chosen, doping can drastically change the electrical, gas-sensing, photocatalytic and photoluminesnce performances of the main substance and because of that is widely used in the mentioned fields of science. If you are able to see the picks of added substance directly on the XRD-pattern, in this case you have some kind of composite, which is different than doping.
I really hope my answer is helpful to you.
With best wishes,
Dimitre
I agree with Dr Dimitrov, the concept of doping involves a very low amount of the dopant into the whole matrix (normally a few percent) and anything higher may result in a composite, that is a second phase is formed (which has to be determined by some measurement).
That's a difference between doped nanoparticles and composite nanoparticles . Because doped there is a method. The distinguishing characteristic of material is the p-doped and n-doped states of the conjugated mat material n chains.The doping processes of materials are related to its structures of nano composite.
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