Journal
JOURNAL OF PHYSICAL CHEMISTRY C
Volume 113, Issue 44, Pages 19107-19111Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jp907651d
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Funding
- National Natural Science Foundation of China [20725310, 20721001, 20673085, 20801045]
- Key Scientific Project of Fujian Province of China [2009HZ0002-1]
- National Basic Research Program of China [2007CB815303, 2009CB939804]
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Guided by the concept of regarding nanoparticles as superatoms or supermolecules in colloidal solution, we design a facile crystallization approach for preparation of 3D supercrystals (SCs) Dispersive states of as-prepared MnO nanocrystals (NCs) in solvents of cyclohexane and ethanol were studied to illuminate the effects of solvents. Ethanol was demonstrated to be the most appropriate solvent, and a large amount of microscale cubic SCs built by octahedral MnO NCs was created via direct crystallization. Although two types of packing structures are well-defined, the MnO SCs prefer the one with the higher packing efficiency of 88.89% for minimizing system energy The crystallization process undergoes a dynamic attachment and exchange mechanism
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