1. Characterization of Cotton Ball-like Au/ZnO Photocatalyst Synthesized in a Micro-Reactor
- Author
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Ki-Joong Kim, Peter B. Kreider, Ho-Geun Ahn, and Chih-Hung Chang
- Subjects
continuous photocatalyst synthesis ,core-shell structure characterization ,Au/ZnO photocatalysts ,cotton ball-like Au/ZnO ,Mechanical engineering and machinery ,TJ1-1570 - Abstract
Noble metal/metal oxide nanostructures are an efficient system in photocatalysis. Continuous and scalable production of advanced particle systems will be a requirement for commercial-scale deployment for many applications, including photocatalysis. In this work, Au/ZnO structures were synthesized in a continuous flow micro-reactor at room temperature and the detailed characteristics of the product indicate a specific cotton ball-like core-shell microstructure that showcases specific advantages compared to traditional batch synthesis methods. The formation pathway of the core-shell Au/ZnO structures is discussed with the pH-dependent speciation diagram, and photocatalytic activity was assessed under simulated sunlight, demonstrating the enhanced performance of the cotton ball-like Au/ZnO microstructures in photocatalytic dye degradation. This work describes the application of microreaction technology in the continuous production of metal/metal oxide photocatalysts.
- Published
- 2018
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