Journal
MATERIALS & DESIGN
Volume 147, Issue -, Pages 182-190Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.matdes.2018.03.046
Keywords
VOCs; Non-thermal plasma; Ozone; Monolith; Catalytic oxidation
Categories
Funding
- Science and Technology Commission of Shanghai Municipality [14DZ1207400, 15DZ2281400]
- Professional and Technical Service Platform for Designing and Manufacturing of Advanced Composite Materials (Shanghai) [16DZ2292100]
- Shanghai Municipal Science and Technology Commission
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This work reports a facile calcination-soak approach for the large-scale growth of Co-Mn composite shell over the cores of copper mesh and foam resulting in Co-Mn@CuO nanowires. In the synthesis of Co-Mn@CuO core/shell structure, CuO nanowires were first formed on copper mesh through a facile calcination, followed by Co-Mn compounds (MnO2 and CoOOH or Co(OH)(3)) soaking to form a coat on the outer surface of CuO nanowires attributed to the redox reaction between MnO4- and Co2+, which were calcined in air to get the final Co-Mn oxide. The thickness of the Co-Mn oxide shell over CuO nanowire could be easily tuned by soaking duration. The prepared Co-Mn@CuO nanowires were applied as monolithic catalysts in plasma-catalytic oxidation of toluene and decomposition of ozone. The catalytic performance was enhanced to similar to 88% at 1.0 A and similar to 95% at 1.5 A with the filling of Co-Mn@CuO core/shell structure as monolith catalyst, which could be attributed to the synergistic effect of plasma and catalytic effect. Using Co-Mn@CuO, 95% ozone conversion was achieved at room temperature credited to the presence of mixed-valent manganese ions in the catalyst. (C) 2018 Elsevier Ltd. All rights reserved.
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