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Title: Characterization of Cotton Ball-like Au/ZnO Photocatalyst Synthesized in a Micro-Reactor

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.
Authors:
ORCiD logo [1] ; ORCiD logo [2] ;  [3] ;  [4]
  1. National Energy Technology Lab. (NETL), Pittsburgh, PA, (United States); Oregon State Univ., Corvallis, OR (United States). School of Chemical, Biological, and Environmental Engineering
  2. Australian National Univ., Canberra, ACT (Australia). Research School of Engineering
  3. Sunchon National University (Korea). Department of Chemical Engineering
  4. Oregon State Univ., Corvallis, OR (United States). School of Chemical, Biological, and Environmental Engineering
Publication Date:
Grant/Contract Number:
FE0004000
Type:
Accepted Manuscript
Journal Name:
Micromachines
Additional Journal Information:
Journal Volume: 9; Journal Issue: 7; Journal ID: ISSN 2072-666X
Publisher:
MDPI
Research Org:
National Energy Technology Lab. (NETL), Pittsburgh, PA, (United States)
Sponsoring Org:
USDOE Office of Fossil Energy (FE)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; 42 ENGINEERING; continuous photocatalyst synthesis; core-shell structure characterization; Au/ZnO photocatalysts; cotton ball-like Au/ZnO
OSTI Identifier:
1478322

Kim, Ki-Joong, Kreider, Peter, Ahn, Ho-Geun, and Chang, Chih-Hung. Characterization of Cotton Ball-like Au/ZnO Photocatalyst Synthesized in a Micro-Reactor. United States: N. p., Web. doi:10.3390/mi9070322.
Kim, Ki-Joong, Kreider, Peter, Ahn, Ho-Geun, & Chang, Chih-Hung. Characterization of Cotton Ball-like Au/ZnO Photocatalyst Synthesized in a Micro-Reactor. United States. doi:10.3390/mi9070322.
Kim, Ki-Joong, Kreider, Peter, Ahn, Ho-Geun, and Chang, Chih-Hung. 2018. "Characterization of Cotton Ball-like Au/ZnO Photocatalyst Synthesized in a Micro-Reactor". United States. doi:10.3390/mi9070322. https://www.osti.gov/servlets/purl/1478322.
@article{osti_1478322,
title = {Characterization of Cotton Ball-like Au/ZnO Photocatalyst Synthesized in a Micro-Reactor},
author = {Kim, Ki-Joong and Kreider, Peter and Ahn, Ho-Geun and Chang, Chih-Hung},
abstractNote = {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.},
doi = {10.3390/mi9070322},
journal = {Micromachines},
number = 7,
volume = 9,
place = {United States},
year = {2018},
month = {6}
}

Works referenced in this record:

Photochemistry and radiation chemistry of colloidal semiconductors. 23. Electron storage on zinc oxide particles and size quantization
journal, January 1988
  • Haase, Markus; Weller, Horst; Henglein, Arnim
  • The Journal of Physical Chemistry, Vol. 92, Issue 2, p. 482-487
  • DOI: 10.1021/j100313a047