Highly Bactericidal and Flexible Cobalt-embedded Inorganic Fibrous Membranes for Public Health Protection

摘要

Contamination of pathogenic microorganisms has caused emerging widespread infectious diseases and death. Antibacterial treatment of personal protective garment and public facilities is an effective way to deal with these serious problems. The metallic Co supported on inorganic porous material, have proven to be promising candidates as activator of peroxymonosulfate (PMS) to generate reactive oxygen species (ROS) for the efficiency pathogenic bacteria elimination. However, there still exists a major shortfall to simultaneously achieve large mesopores and high flexibility in inorganic porous materials. We report on flexible metallic Co-embedded inorganic nanofibrous membranes (CINMs) with ultra-fast and high-efficiency Bacteria-killing ability that produce biocidal ROS by activating PMS, via double-template electrospinning approach and in situ carbonization reduction method. The resulting CINMs possess integrated features of robust mechanical property, high porosity, rapid ROS production, and high biocidal activity, resulting in a high bactericidal efficiency of 99.99999%. Moreover, a novel spray type sterilizer based on the CINMs/PMS system was designed for the convenient sterilization of surface of the garment. The successful synthesis of these fascinating materials may shed light on designing new types of antibacterial agents based on advanced oxidation processes for various public health and environment protection.