Observation of the Accelerated Diffusion in Nanoparticles of Paradibromobenzene /Paradihlorbenzene Solid Solution

TL;DR

This study observes accelerated diffusion of paradihlorbenzol molecules in P-dibromobenzene nanoparticles, evidenced by Raman spectroscopy, with findings indicating size-induced lattice parameter changes enhance diffusion rates at room temperature.

Contribution

It reports the first observation of accelerated diffusion in nanoparticles of a specific solid solution, linking size reduction to increased diffusion rates through lattice parameter modifications.

Findings

Accelerated diffusion rate of (1.3 ± 0.02)×10^{-11} cm^2/s at room temperature.

Structural modifications in nanoparticles are reflected in Raman spectra.

Lattice parameter magnification due to size reduction causes increased diffusion.

Abstract

P-dibromobenzene nanoparticles in a case of paradihlorbenzol molecules have been synthesized. Raman spectrums of these nanoparticles are measured. At diffusion of molecules of paradihlorbenzol in a pdibromobenzene nanoparticle solid solution formed. Modifications in structure of nanoparticles at diffusion are reflected in Raman spectrums. Unlike a solid solution single crystal, in nanoparticles the accelerated diffusion, $D = 1.3 \pm 0.02 10^{-11} cm^2/s$, is observed at room temperature. Calculations show that the accelerated diffusion is caused by magnification of parametres of a lattice at reduction of sizes of nanoparticles.