The Investigation of Adsorption Behavior of Gas Molecules on FeN₃-Doped Graphene

Figure 5

The density of states (DOS) of FeN₃-gra with O₂ adsorbed on it. The figures on the left (right) indicate the corresponding total (partial) DOS. The “before” and “after” indicate the states before and after gas adsorption. The arrow up and arrow down indicate the spin up and spin down states, respectively.