(634b) Controlled Aqueous Synthesis of ZnO Nanofilms Using Physical Means

A continuous flow microreactor system was used to yield various ZnO nanofilms by varying physical parameters during the synthesis. Morphology of ZnO assembly was primarily determined by flow rates of solution, resulting in dispersed nanocrystals, rectangular, or spherical assembly at a solution flow rate of 6.8 mL/min, 14.7 mL/min, and 28.1 mL/min respectively. Reactive ZnO solution from the microreactor was directly delivered onto a substrate for the fabrication of ZnO nanofilms. A variety of ZnO nanostructured thin films including flower-like, smooth amorphous ZnO thin film and well-alinged vertical ZnO nanowire (NW) arrays could be fabricated. This study demonstrates the versatility of microreactor-assisted nanomaterial synthesis and deposition process for the production of nanostrucutures with various morphologies by tuning the physical parameters while using the same chemical precursors for the synthesis.