To effectively purify formaldehyde pollutant among indoor air,a facile one-step reducing deposition method was employed to modify polypropylene (PP) honeycomb substrate material by directly loading manganese oxide (MnOx) active components onto its surface,thereby preparing MnOx/PP composite material.The results showed that the composite material possessed a rich mesoporous structure,leading to the specific surface area and pore volume that were 4 and 9 times higher than that of the PP substrate,respectively.Additionally,the low crystallinity α-MnO2 active layer formed on the surface of the composite material contained the high proportion of Mn3+ and oxygen vacancies,which could greatly enhance the adsorption and oxidative decomposition of formaldehyde.Consequently,the formaldehyde saturated adsorption capacity of this composite material was significantly superior to that of commercial manganese-based materials,indicating good application potential.
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基金资助
国家自然科学基金面上项目(22278086)
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