Abstract
The development of highly efficient air purification materials contributes to acquiring quality indoor air that essential for improving physical health and life comfort. In this work, a Co3O4-CoMn2O4@SiO2 (COCMOS) nanofibrous membranes (NFMs) were prepared by thermal treating Mn-modified ZIF-67@SiO2 NFMs for efficient indoor air purification. The COCMOS NFMs exhibited 99.03 % and 99.999 % dust retention efficiencies for PM0.3 and PM2.5 with a low filtration resistance, respectively. Compared to the Co3O4@SiO2 (COS) NFMs (23 %), the HCHO removal efficiency of COCMOS NFMs was significantly improved at room temperature, reaching over 95 % within 25 min. The characterization results indicated that the thermal treatment of Mn-modified ZIF-67 induced the formation of a Co3O4-CoMn2O4 heterostructure on the surface of COCMOS NFMs. The Mn-Co bimetallic sites in this heterogeneous structure increased the amounts of oxygen vacancies and high valent cations and enhanced the redox properties of COCMOS NFMs, which contributed to its superior performance. This work provided insights on the design and preparation of highly efficient materials for indoor air purification.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
