Phosphorene is a layered and puckered hexagonal nanostructure of phosphorous atoms linked by covalent bonds and weak interlayer dispersive interactions , which shows a lamellar structure, high carrier mobility, high chemical stability, and tunable bandgap (~0.3-2.0 eV) . Phosphorene-based nanoadsorbents have been proposed to uptake pollutants such as formaldehyde, nitrogen oxides, and carbon oxides .