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Low temperature decomposition of ozone by facilely synthesized cuprous oxide catalyst

Abstract

In recent years, ozone remains to be one of the most common air pollutants generated by ultraviolet irradiation and/or emitted from daily machines. As it is harmful to human and environment in even trace concentrations, it is challenging to catalytically decompose ozone with high efficiency and low cost. In this study, surface exposure and particle size controlled cuprous oxide (Cu2O) is synthesized in ambient condition through a simple reductive solution chemistry route. Ozone decomposition test shows that 40 nm cubic Cu2O has 100% degradation efficiency at 25 °C with high resistance to water vapor. Moreover, the high catalytic activity can also retain for >6 h at 0°C. The related mechanism is investigated to be the easily desorption of the weakly adsorbed O22- intermediate on {100} plane of cubic Cu2O in ozone decomposition process, which is proved by oxygen temperature programed desorption, X-ray photoelectron spectroscopy and atomic model establishments. All these results show the promise of the facilely synthesized Cu2O catalyst in highly active degradation of ozone for human health and environment sustainability.

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Publication details

The article was received on 20 Jan 2017, accepted on 19 Apr 2017 and first published on 19 Apr 2017


Article type: Paper
DOI: 10.1039/C7NJ00253J
Citation: New J. Chem., 2017, Accepted Manuscript
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    Low temperature decomposition of ozone by facilely synthesized cuprous oxide catalyst

    S. Gong, W. Li, Z. Xie, X. Ma, H. Liu, N. Han and Y. Chen, New J. Chem., 2017, Accepted Manuscript , DOI: 10.1039/C7NJ00253J

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