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Indexed by:期刊论文

Date of Publication:2013-11-01

Journal:MICROELECTRONIC ENGINEERING

Included Journals:SCIE、EI

Volume:111

Page Number:199-203

ISSN No.:0167-9317

Key Words:Microfluidic; ZnO nanowires; Photocatalysis

Abstract:A microfluidic device with integrated ZnO nanowires (NWs) has been used for photodegradation studies of organic dye. By using conventional photolithography and hydrothermal growth techniques, high density and well-aligned ZnO NWs were grown on a patterned area over a glass substrate, allowing easy integration into a microfluidic reaction chamber for photodegradation under continuous-flow conditions. Cyclic photodegradation experiments are shown to demonstrate the variation of the photocatalytic efficiency during the first cycles. Accordingly, the device pretreatments such as ZnO NWs annealing and flushing with dye solution were performed in order to determine the optimal photocatalytic conditions. As expected, the microfluidics based approach exhibited a much improved photodegradation efficiency comparing to the conventional method using dispersed ZnO NWs. (C) 2013 Elsevier B.V. All rights reserved.