Preparation of Au0.5Pt0.5/MnO2/cotton catalysts for decomposition of formaldehyde
Source abstract
Abstract
Powder Au0.5Pt0.5/MnO2 and Au0.5Pt0.5/MnO2/cotton catalysts were successfully prepared by facile methods. The as-prepared catalysts were characterized by means of XRD, SEM, TEM, and TGA. Au0.5Pt0.5 alloy NPs were evenly dispersed on the surface of nest-like MnO2 and no agglomeration was observed. The powder Au0.5Pt0.5/MnO2 catalyst was adhered to the surface of cotton fibers, and the practical loading amount first increases, and then levels off with increase of the theoretical loading dosage. The Au0.5Pt0.5/MnO2/cotton catalysts showed excellent catalytic activities for oxidative decomposition of formaldehyde (HCHO). 15 wt% Au0.5Pt0.5/MnO2/cotton has the highest catalytic activity and the temperature for complete decomposition of HCHO is 120 °C. The valence states of MnO2, MnO2 porous structures, synergistic effect between Au1−x Pt x NPs and MnO2, and synergistic effect between Au0.5Pt0.5/MnO2 and cotton are considered to be the main reasons for the observed high catalytic activity of Au0.5Pt0.5/MnO2/cotton catalysts. The Au0.5Pt0.5/MnO2/cotton catalysts can not only avoid the disadvantages of power catalysts but also improve the catalytic activity; these advantages indicate that Au0.5Pt0.5/MnO2/cotton catalysts have promising potentials in practical applications. .
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Catalytic Processes in Materials Science · Catalysis and Oxidation Reactions · Gas Sensing Nanomaterials and Sensors
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