石墨烯基吸油海绵的制备与应用-研究

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1、万方数据AbstractGrapheneoxide(GO)wassynthesizedviatheHummersmethodandultrasonicstrippingmethodusingthenaturalgraphiteasrawmaterials．Furtherreducedgrapheneoxide—basedmelaminesponges(RGOME)andreducedgrapheneoxide-basedpolyurethanesponges(RGOPU)werefabricatedvia

2、adip-coatingmethodwhichwasinsitureduced．As-preparedRGOMEspongeswereinvestigatedbyscanningelectronmicroscopy(SEM)，Fouriertransforminfraredspectroscopy(FTIR)andcontactanglemeasuringapparatus，respectively．Oiladsorptioncapacity,theoil／waterselectiveadsorption

3、andreusabilityoftheRGOMEspongeswerealsostudied．TheresultsdemonstratethattheRGOMEspongesexhibitgoodhydrophobicityandsuperoleophilicity,andtheoiladsorptioncapacityfortoluene，DMAC，DMSO，trichloroethylene，kerosene，pumpoil，soybcanoilandoliveoilisrespectively69．

4、8，77．9，119．7，127．0，59．3，16．6，77．4and56．39／g．Theadsorptiveprocessofoils，liketolueneandkerosene，WasfittedtotheBane出amequationfortheisothermaladsorption．Intermsofselectiveadsorptiveprocess，theconcentrationofoilinoil-watermixturedecreaseddrastically,whileoilr

5、emovalconstantlyincreased．TheresultingseparationefficiencyWasupto74．49％，andas—preparedspongeshaveimpressiveperformanceforoil／waterseparationthanothersorbentsreportedintheliterature．Inaddition,theRGOMEspongesCanhereusedmorethan10timeswithgentlydeterioratin

6、ginadsorptioncapacity．As—preparedRGOPUspongeswerealsoinvestigatedbySEM，fieldemissionscanningelectronmicroscope(FESEM)，FTIRandcontactanglemeasuringapparatus．TheRGOPUspongeshaveimpressiveadsorptioncapacitywhichisrespectively32．5，55．0，51．3，33．0，21．7，24．4，31．

7、2and26．1g／gfortoluene，DMAC，DMSO，trichloroethylene，kerosene，pumpoil，soybeanoilandoliveoilTheRGOPUspongesCanbeconsideredasafastande伍cientadsorbent．Furtherly，reducedgrapheneoxide—basedpolyurethanespongehollowtubes(RGOPU-T)forthecollectionofoilfromthesurfaceo

8、fwaterhavebeenpreparedviagradientwindingprocess．TheRGOPU-TWasdirectionallyemployedforoil万方数据collectingandtransportfromthesurfaceofwaterbythenegativepressureofvacuumpump．Bythisway,thecontinuousandeffectiveoibwatersep