The lowest particle size and PDI achieved after optimization of HSD speed and time indicated that sufficient dispersion energy was achieved and was well distributed within the solution for disruption of particle aggregates.
These results suggest either the agglomeration of Rh particles or no significant disruption of Rh particles upon CO exposure.
On the other hand, z-blade mixing led to disruption of these particles.
Based on these experimental results, it was proposed that the PLA spheres were formed in three steps: (1) aggregation – individual PLA chains got aggregated with each other in solution; (2) formation and disruption of PLA particles; (3) solidification of PLA spheres.
The ring canal may thus act as one such limitation causing the disruption of large particles, as we have observed.
The evolution of RhI CO 2 species can therefore be directly correlated to the disruption of Rh particles.
The loss of pre-ribosomal peaks confirmed the disruption of ribonucleoprotein particles.
A further oxidative disruption of Rh particles can be observed when increasing the temperature, with a more dominant Rh O contribution.
As expected, we observed a larger oxidative disruption of Rh particles for 1.6 wt % Rh/Al2O3; the Rh Rh bond length did not change after CO exposure.
