writer：LingmeiZhu,HengyuPan,HuijieWei,TianceZhang,BoyangTian, JianhuaWang,YongpingHou, andYongmeiZheng*
keywords：Water harevsting
source：期刊
specific source：ACSAppl.Mater. InterfacesXXXX,XXX,XXX?XXX
Issue time：2026年

A bioinspired photothermic MOF-spindle-knot microfiber (BPMM) is designed by using polyisopropylacrylamide, α-polyvinylidene fluorideas-grownmetal?organicframework(MOF-303),andcarbonblack.A mechanismofwaterharvestingisrelatedtotheintegrativeeffectsofchemical

and structural, i.e., BPMMcomposedof periodic-distributedMOF-spindle

knotwithroughcurvaturegradient features,displayingthethree-dimensional

skeletonwithporous channel andhigh-hydrophilic sites andphotothermal

responsivehydrophilic?hydrophobicswitchesaswell,whichrunsasynergistic

effect toachieveanultrahighwateruptake-releaseandpropelwater-molecule

captureinhighefficiencyunderatmosphericlowhumidity.BPMMtakeson～

100%ofwater releaseunder 1 sun for as-uptakedwater and, accordingly,

achieves thewaterharvestingcapabilityof～0.16?0.62gg?1h?1 at～25°C

and～10?60%relativehumidity(RH),whichoutperforms2?8timeshigher

thanthatofnormalMOF-303orotherfibers.BPMMmaintains72cyclesday?1,achievingwaterharvestingcapabilityof～12.27g

g?1 in～10%RH, under1sun.Asoutdoorat～33.4°Cwith～42.7%RHand～0.66kWm?2,BPMMreacheswaterharvesting capabilityof～24.71gg?1day?1.Thisfindingprovidesaninsight intothedesignofsupermaterials,whichwouldbeextendedinto somerealms, e.g.,waterengineering, energysystem, sensordevices insituationswithwaterscarcity, etc.

https://doi.org/10.1021/acsami.6c00388