| 摘要 |
A porous medium and a filtration/purification assembly as well as a method of making and using them are provided. In one embodiment, the filtration/purification assembly includes a housing having a fluid inlet and a fluid outlet, a fluid permeable filter medium disposed within the housing between the fluid inlet and the fluid outlet across a fluid flow path provided between the fluid inlet and the fluid outlet, and at least one barrier member capable of allowing fluid flow through the barrier member and located in at least one of the fluid inlet and the fluid outlet. The fluid permeable filter medium and/or the barrier member may comprise a reactive medium. In another embodiment, a method for making a porous medium comprises forming an oxide layer on substantially all exposed surfaces of a porous metal substrate, depositing at least one layer of carbon on substantially all of the oxidized porous metal substrate, depositing a precursor metal species on the carbon layer, and heating the porous metal substrate containing the carbon layer to form active sites on the carbon layer, wherein the active sites include at least partially deoxygenated metal species chemically bonded to the carbon layer. |
