镍和碳纤维复合方案

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1、四氧化三铁和碳纤维复合方案1.Ni/CF:碳纤维粉碎用丙酮洗掉表面残余物蒸馏水洗净120度下烘4小时；为了增强碳纤维与包覆物间的界面结合力，将碳纤维用硝酸浸泡4小时，最后用蒸馏水彻底洗干净；碳纤维的活化：室温下超声震动：150mL,20g/LSnCl2·2H2Oand40mL/LHClfor75minandthenactivatedbyanactivationsolution(150mL,0.25g/LPdCl2and2.5mL/LHCl)for75min。然后在碱性溶液中沉积镍2.2.1.PretreatmentofCFandFGTheCFwascom

2、minutedandthesurfaceresidualsizingmaterialswereremovedbyacetone.ThentheCFwasrinsedwithdistilledwateranddriedat120◦Cfor4h.ToenhancetheinterfacialadhesionbetweentheCF(FG)andthecoating,0.3gCF(FG)wasimmersedinnitricacidfor4handwashedthoroughlywithdistilledwater.Sequentially,atwo-step

3、treatmentwasusedtofacilitateuniformactivationthroughouttheentiresurfaceoftheCF(FG)withultrasonicvibrationatroomtemperature:theCF(FG)wassensitizedbyasensitizationsolution(150mL,20g/LSnCl2·2H2Oand40mL/LHCl)for75minandthenactivatedbyanactivationsolution(150mL,0.25g/LPdCl2and2.5mL/LH

4、Cl)for75min.2.2.2.PreparationofNCFandNFGThepretreatedCF(FG)wasdippedinanalkalinebathtodepositnickel.Thebathsolution(150mL,40g/LNiSO4·6H2O,20g/LNaH2PO2·H2O,100g/LNaC6H5O7·2H2Oand50g/LNH4Cl)withpHadjustedbyNH4OHto9.0waskeptataconstanttemperatureof70◦C.Theplatingtimewas20min.Stirrin

5、gwasusedtohomogenizethebathsolutionaeliminatethegasbubblesfromtheCF(FG)surfacesduringplating.Finally,as-preparedproductswerewashedwithdistilledwaterandthendriedinanovenat120◦Cfor2h.2.Fe3O4/CF:碳纤维浸入丙酮2小时，蒸馏水洗；浸入硝酸5小时，蒸馏水洗；30g/lSnCl2·2H2O和3mmolHCL，蒸馏水洗；5–10g/lsilvernitrate[AgNO3]an

6、d2.1mMammoniamonohydrate[NH3·H2O]C+Sn2+=CSn2+(1)CSn2++2Ag+=CAg2+Sn4+(2)Fe(NO3)3→Fe3++3NO3−(3)(CH3)2NHBH3+2H2O→BO2−+(CH3)2NH+7H++6e−(4)Fe3++e−→Fe2+(5)NO3−+H2O+2e→NO2−+2OH−(6)Fe2++2Fe3++8OH−→(Fe2+,2Fe3+)(OH)8(7)(Fe2+,2Fe3+)3(OH)8→Fe3O4+4H2O4.Fe3O4/CNT:CNT表面处理，在60度硝酸溶液中浸泡12小时；CNT在11

7、0度下烘干；Fe3O4/CNT溶解在200mLCTSsolution(0.1wt.%)insteadofwater,theobtainedprecipitatewasCNT/Fe3O4/CTScomposite.，20mgCNT/Fe3O4/CTSwasdispersedin2mLof5mg/mlGOxsolutionby1minsonicationandthemixturewaskeptina4◦Crefrigeratorfor2h.Andthen,thesupernatantwasremovedfromtheprecipitatebydecantin

8、gwiththeaidofamagnet.Theprecipitatewasdi