Characterization of Cotton Ball-like Au/ZnO Photocatalyst Synthesized in a Micro-Reactor
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National Energy Technology Laboratory (NETL), U. S. Department of Energy, 626 Cochrans Mill Road, Pittsburgh, PA 15236, USA
2
School of Chemical, Biological, and Environmental Engineering, Oregon State University, Corvallis, OR 97331, USA
3
Research School of Engineering, The Australian National University, Canberra, ACT 2602, Australia
4
Department of Chemical Engineering, Sunchon National University, 255 Jungang-ro, Suncheon 57922, Korea
*
Authors to whom correspondence should be addressed.
Micromachines 2018, 9(7), 322; https://doi.org/10.3390/mi9070322
Received: 20 May 2018
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Revised: 14 June 2018
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Accepted: 22 June 2018
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Published: 26 June 2018
(This article belongs to the Special Issue Synthesis, Assembly and Functional Application of Nanomaterials in Microsystems)
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.
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Keywords:
continuous photocatalyst synthesis; core-shell structure characterization; Au/ZnO photocatalysts; cotton ball-like Au/ZnO
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MDPI and ACS Style
Kim, K.-J.; Kreider, P.B.; Ahn, H.-G.; Chang, C.-H. Characterization of Cotton Ball-like Au/ZnO Photocatalyst Synthesized in a Micro-Reactor. Micromachines 2018, 9, 322. https://doi.org/10.3390/mi9070322
AMA Style
Kim K-J, Kreider PB, Ahn H-G, Chang C-H. Characterization of Cotton Ball-like Au/ZnO Photocatalyst Synthesized in a Micro-Reactor. Micromachines. 2018; 9(7):322. https://doi.org/10.3390/mi9070322
Chicago/Turabian StyleKim, Ki-Joong, Peter B. Kreider, Ho-Geun Ahn, and Chih-Hung Chang. 2018. "Characterization of Cotton Ball-like Au/ZnO Photocatalyst Synthesized in a Micro-Reactor" Micromachines 9, no. 7: 322. https://doi.org/10.3390/mi9070322
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