Why does the diffraction peak position of metal oxide shift lower and higher when influenced by rGO layers? Other hand, that the crystallite size of metal oxide nanoparticles changed as a result of the rGO interfacial contact described above? Please share your knowledge. Thank you very much.
The diffraction peak position of metal oxide shifts lower and higher when influenced by rGO layers because the metal oxide nanoparticles have less crystallinity and a larger surface area due to their interaction with the rGO layers. This reduces the amount of coherent X-ray scattering, leading to a shift in the diffraction peaks. Additionally, the crystallite size of metal oxide nanoparticles changed as a result of the rGO interfacial contact because the rGO layers form a coating around the metal oxide nanoparticles, causing them to become more amorphous and particles to aggregate. This reduces the size of individual crystallites, resulting in smaller average crystallite size.
The diffraction shifts The position of a metal oxide, when impacted by reduced graphene oxide, can be caused by various things, including variations to the metal oxide's crystal structure, size, and orientation, as well as interactions with rGO. By causing strain or changing the coordination environment of the metal ions, the presence of rGO can change the crystal structure of the metal oxide. The interatomic distances and bond angles may alter, shifting the diffraction peaks. Furthermore, the interaction between the metal oxide and rGO can modify the size and orientation of the metal oxide particles, which can affect the diffraction peak positions. The surface area and porosity of the rGO can also influence the adsorption and distribution of species in the metal oxide during this interaction.
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