Figure S1: (a) As prepared MoO 3 nanowires sonicated for 30 min in the water; (b) Standing for one day, Figure S2: Front side and back side of as-synthesized MoO 3 nanowires membrane after filtrating with various dyes, Figure S3: (a) Variation of MB solution flux with di ff erent membrane thickness; (b) Adsorption percentage of 5 µ m membrane Table S1: Comparison of MB adsorption capacity of the as prepared MoO 3 nanowires with other reported adsorbents, Video S1: Methylene blue (MB), Video S2: Rhodamine B (RhB), Video S3: Methyl orange (MO), Video S4: Methylene blue (MB) + Methyl orange (MO), Video S5: Rhodamine B (RhB) + Methyl orange