In situ Thermokinetic Investigation on the Growth of MnMoO4稨2O Nanorods

doi:10.3969/j.issn.0251-0790.2012.08.033

Abstract

Abstract: A novel method utilizing in situ microcalorimetry to monitor the instantaneous information of MnMoO₄稨₂O nanorods growth process in microemulsion was reported. We presented the microcalorimetric heat flow(MCHF) curve which traced the energy evolution of MnMoO₄稨₂O nanorods growth process. The MCHF curve revealed that an exothermic peak appeared firstly, and then followed by an endothermic peak and a second exothermic peak. Combined with the performance of microemulsion and the MCHF curve, we discussed the morphology evolution and the thermokinetic information of MnMoO₄稨₂O nanorods growth process. The whole process contained the collision and coalescence-exchange of drops, reaction, nucleation, crystal crystallization and the secondary growth. The rate constant of the reaction and nucleation, crystal crystallization, and the secondary growth were found to be 6.35?10^-3, 7.18?10^-4, and 9.16?10^-5 s^-1, respectively. The growth rate was less than the nucleation rate and it was helpful for the formation of nanoparticles, which further proved microemulsion as soft template for the controlled synthesis of nanomaterials had a scienti-fic significance.

Key words: Microcalorimetry, Thermokinetics, MnMoO₄稨₂O nanorods, Microemulsion, In situ growth

CLC Number:

TrendMD:

MA Yu-Jie, FAN Gao-Chao, CHEN Jie, HUANG Zai-Yin. In situ Thermokinetic Investigation on the Growth of MnMoO₄稨₂O Nanorods[J]. Chem. J. Chinese Universities, 2012, 33(08): 1813.

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In situ Thermokinetic Investigation on the Growth of MnMoO₄稨₂O Nanorods

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