This work was supported by the National Natural Science Foundation of China (No.20973128 and No.20871096), the National High Tech Research and Development Program (No.2006AA03Z344), and the Program for New Century Excellent Talents in University of China (No.NCET-07-0637).
ZnO nanoparticles were synthesized via a direct precipitation method followed by a hetero- geneous azeotropic distillation and calcination processes, and then characterized by X-ray power diffraction, scanning electro...