| Title: | Redox-Induced In Situ Growth of MnO(2) with Rich Oxygen Vacancies over Monolithic Copper Foam for Boosting Toluene Combustion |
| Author(s): | Huang Q; Zhao P; Lv L; Zhang W; Pan B; |
| Address: | "State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China" |
| ISSN/ISBN: | 1520-5851 (Electronic) 0013-936X (Linking) |
| Abstract: | "Catalytic combustion has been known to be an effective technique in volatile organic compound (VOC) abatement. Developing monolithic catalysts with high activity at low temperatures is vital yet challenging in industrial applications. Herein, monolithic MnO(2)-O(v)/CF catalysts were fabricated via the in situ growth of K(2)CuFe(CN)(6) (CuFePBA, a family of metal-organic frames) over copper foam (CF) followed by a redox-etching route. The as-synthesized monolith MnO(2)-O(v)-0.04/CF catalyst displays a superior low-temperature activity (T(90%) = 215 degrees C) and robust durability for toluene elimination even in the presence of 5 vol % water. Experimental results reveal that the CuFePBA template not only guides the in situ growth of delta-MnO(2) with high loading over CF but also acts as a source of dopant to create more oxygen vacancies and weaken the strength of the Mn-O bond, which considerably improves the oxygen activation ability of delta-MnO(2) and consequently boosts the low-temperature catalytic activity of the monolith MnO(2)-O(v)-0.04/CF toward toluene oxidation. In addition, the reaction intermediate and proposed mechanism in the MnO(2)-O(v)-0.04/CF mediated catalytic oxidation process were investigated. This study provides new insights into the development of highly active monolithic catalysts for the low-temperature oxidation of VOCs" |
| Keywords: | *Oxides/chemistry *Copper Oxygen Manganese Compounds/chemistry Toluene/chemistry Oxidation-Reduction Catalysis air pollution control catalytic oxidation manganese dioxide monolithic catalyst volatile organic compounds; |
| Notes: | "MedlineHuang, Qianlin Zhao, Puzhen Lv, Lu Zhang, Weiming Pan, Bingcai eng Research Support, Non-U.S. Gov't 2023/06/08 Environ Sci Technol. 2023 Jun 20; 57(24):9096-9104. doi: 10.1021/acs.est.3c02103. Epub 2023 Jun 8" |
