In situ synthesis of MnO2@SiO2–TiO2 nanofibrous membranes for room temperature degradation of formaldehyde

Catalytic oxidation is an efficient and cost-effective technology to eliminate HCHO, and MnO 2 shows excellent performance towards this kind of reactions. In this work, a birnessite type manganese dioxide nanoparticles modified silica-doped titanium dioxide (MnO 2 @SiO 2 –TiO 2 ) nanofibrous membranes were successfully synthesized by using an electrospinning technique and liquid phase synthesis . It is found that MnO 2 @SiO 2 –TiO 2 -4 nanofibrous membrane showed the best catalytic activity for HCHO removal. The as-fabricated nanofibrous membranes exhibited good and reversible catalytic oxidation activity towards formaldehyde, and more than 90% of the catalytic performance could remain after 5 testing cycles. The successfully constructed MnO 2 nanoparticles decorated soft SiO 2 –TiO 2 nanofibrous membranes, which can be a great promise for effectively solving the problem of environmental remediation.