Abstract
Mesoporous MnOx-Y and LnOx/MnOx ozone decomposition catalysts were prepared by calcination of Mn-BTC (BTC = 1,3,5-benzentricarboxylate) and doping of lanthanide elements (Ln = La, Ce, Sm, Eu, Er). Compared to MnOx-Y catalysts, the LnOx/MnOx catalysts showed higher ozone catalytic activity, the mutual conversion between Lnn+ and Mnn+ was helpful to improve ozone decomposition. The CeOx/MnOx catalyst showed the highest catalytic that showed 93% conversion of 40 ppm O3 in the relative humidity (RH) = 65% after 360 min, which was attributed to the largest specific surface area, more oxygen vacancies, Mn3+ and Oads. In addition, the CeOx/MnOx catalyst was loaded into the non-woven fabric to obtain CeOx/MnOx-NWF catalyst, which showed a highly efficient and stable ozone conversion under the RH range from less than 5%–85%. This work will promote the practical application of Mn-BTC derived catalysts.
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