Kinetic investigation of in situ growth of CdMoO_4 nano-octahedra

CdMoO4 nano-octahedra were grown in situ at room temperature by reverse-microemulsion.Energy evolution from this growth process was monitored using microcalorimetry.The microcalorimetric heat flow (MCHF) curve showed a characteristic endothermic peak for the initial reaction,and double discontinuous exothermic peaks for the subsequent crystal growth.Combined with complementary characterization techniques,the evolution of morphology and size of the CdMoO4 nano-octahedra were correlated with the MCHF peaks.Calculations based on the microcalorimetric results at 298.15 K provided rate constants of 7.56×10–5 s–1 for the reaction and nucleation process and 1.59×10–4 s–1 for the crystallization process.

CdMoO4 nano-octahedra were grown in situ at room temperature by reverse-microemulsion. Energy evolution from this growth process was monitored using microcalorimetry. The microcalorimetric heat flow （MCHF） curve showed a characteristic endo- thermic peak for the initial reaction, and double discontinuous exothermic peaks for the subsequent crystal growth. Combined with complementary characterization techniques, the evolution of morphology and size of the CdMoO4 nano-octahedra were cor- related with the MCHF peaks. Calculations based on the microcalorimetric results at 298.15 K provided rate constants of 7.56×10^-5 s^-1 for the reaction and nucleation process and 1.59×10^-5 s^-1 for the crystallization process.