Regeneration of nano-ZnO photocatalyst by the means of soft-mechanochemical ion exchange method |
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| Authors: | Yansheng LI Zhenhua JIAO Nan YANG Hong GAO |
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| Institution: | 1. Physics Department and Center for Free-Electron Laser Science, Universität Hamburg, 22761 Hamburg, Germany;2. Institut für Methoden und Instrumentierung der Forschung mit Synchrotronstrahlung, Helmholtz-Zentrum Berlin für Materialen und Energie GmbH, 12489 Berlin, Germany;3. DESY Photon Science, 22607 Hamburg, Germany |
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| Abstract: | Nano-crystalline ZnO particles synthesized via an ion exchange method were used in a methyl-orange photocatalytic degradation process. An ion exchange resin mixed bed system was used in the suspension for separation of nano-ZnO and methyl-orange after photocatalysis reaction. Ion exchange resin, photocatalyst and water were mixed evenly by airflow. Nano-ZnO photocatalyst and soluble carboxyl zinc were gathered in the soft-mechanochemical process simultaneously. Ion exchange reaction ZnO photocatalyst and counterion transfer process on resin were all improved. Byproducts and other inorganic ions were transfered into resin phase. Nano-ZnO photocatalyst can be regenerated and reused. |
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