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  • Title: Enhanced catalytic performance for volatile organic compound oxidation over in-situ growth of MnOx on Co3O4 nanowire.
    Author: Zhao Q, Liu Q, Zheng Y, Han R, Song C, Ji N, Ma D.
    Journal: Chemosphere; 2020 Apr; 244():125532. PubMed ID: 32050334.
    Abstract:
    Hierarchical Co3O4@MnOx material has been synthesized by in-suit growth of MnOx on the Co3O4 and applied in catalytic oxidation of volatile organic compounds (VOCs). Results revealed that T90 of acetone on the Co3O4@MnOx was 195 °C, which was 36 °C and 32 °C lower than that on the Co3O4 and MnOx/Co3O4, respectively. The universality experiments demonstrated that T90 of ethyl acetate and toluene on the Co3O4@MnOx were 200 °C and 222 °C, respectively. The above results indicated that Co3O4@MnOx catalyst presented a robust catalytic performance. Characterization results showed that high catalytic activity of the Co3O4@MnOx catalyst could be attributed to the improvement of low temperature reducibility, the enhancement of Co3+ and adsorbed oxygen species resulted from the sufficient reaction between MnO4- and Co2+ during secondary hydrothermal process. Furthermore, stability and water-resistance experiments showed the Co3O4@MnOx catalyst with high cycle and long-term stability, satisfied endurability to 5.5-10 vol. % water vapor at 210 °C.
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