Dual hydrophobic modification on MIL-101(Cr) with outstanding toluene removal under high relative humidity

•Crystal size of MIL-101(Cr) reduced 15 times by in-situ confined growth in PA-NH2.•Capillary condensation mode of water molecules was changed due to PDMS coating.•P-MIL-101(Cr)@PA-NH2 showed 6.3 times toluene-remove capacity to MIL-101 at 50% RH.•Dual modified sorbent displayed superb moisture stability in 30-day humid exposure.