SupplementaryMaterial(ESI)forRSCAdvances.Thisjournalis©TheRoyalSocietyofChemistry2017 ElectronicSupplementaryInformationforHighlyStableMesoporousSilicaNanospheresEmbeddedwithFeCo/GraphiticShellNanocrystalsasicallyRecyclable MultifunctionalAdsorbentsforWastewaterTreatment YonghoonHong,‡aDaJeongKim,‡aInAeChoi,aMouPal,bGaehangLee,*cKiMinNam,*dWonSeokSeo*a aDepartmentofChemistry,SogangUniversity,Seoul,04107,RepublicofKoreabInstitutodeFísica,BUAP,Av.SanClaudioyBlvd.18SurCol.SanManuel,CiudadUniversitaria,
C.P.72570Puebla,MexicocKoreaBasicScienceInstituteandUniversityofScienceandTechnology,Daejeon34133,RepublicofKorea dDepartmentofChemistry,MokpoNationalUniversity,Jeonnam58554,RepublicofKorea
1 (a) (b) (c) 20nm 20nm 20nm Fig.S1.TEMimagesofFeCo/GCNCsobtainedfrom(a)65nm,(b)130nm,and(c)270nmFeCo/GCNCs@MSNsafterHFtreatment. Intensity(a.u.) 10 20 30 40 50 60 70 2θ(deg) Fig.S2.XRDpatternofMSNs. (a) Fe:Co=53:47 (b) Fe:Co=52:48 (c) Fe:Co=52:48 SiCu FeCo FeCoCu SiCu FeCoFeCuCo SiCu FeCoFeCuCo
0 2
4 6
8 100
2 4
6 8 100
2 4
6 8 10 keV keV keV Fig.S3.EDXdataof(a)65nm,(b)130nm,and(c)270nmFeCo/GCNCs@MSNs.
2 M(emug–1)M(emug–1) M(emug–1) (a)5432100 (b)20100 2010 0–10–20 –6–4–20246H(kOe) –10 ZFC FC –20 50 100 150 200 250 300 –60–40–200 204060 T(K) H(kOe) Fig.S4.(a)Temperature-dependentizationcurvesunderanappliedfieldof100Oeand(b)Field-dependentizationcurvesat300Kfor130nmFeCo/GCNCs@MSNs.Insetin(b)showsthelooponanenlargedx-axisscale. (a) (b) (c) (d) (e) 100nm 100nm Fig.S5.Photographsof130nm(a,b)FeCo/GCNCs@MSNs-SHand(c)FeCoNCs@MSNs-SHin35%HClsolutions(a,c)anda1mMNaOH(pH11)solution(b).TEMimagesofFeCo/GCNCs@MSNs-SHstoredoveramonitoringperiodofaweekinthe(d)HCland(e)NaOHsolutions,respectively.FeCo/GCNCs@MSNs-SHexhibitedstabilityagainstHClorNaOHetchingovera
3 monitoringperiodofaweek.However,FeCoNCs@MSNs-SHhavingFeCo(beingunencapsulatedwithacarbonshell)NCsturnedthecolortogreenintheHClsolutionrightaftertheadditionduetotheFeandCoetching. Transmitance(a.u.) MSNsO–
H Si–OH O–
H Si–O–Si 4000 3000 2000 WaveNumber(cm–1) 1000 Fig.S6.FT-IRdataof130nmMSNs. (a) (b) 200nm 200nm Fig.S7.TEMimagesof130nm(a)MSNs-SHand(b)FeCo/GC@MSNs-SH.
4 (a) 40 (b) 25 (c) 200 Adsorbedamount(mg/g)Adsorbedamount(mg/g)Adsorbedamount(mg/g) 20 35 175 15 30 150 10 25 125
5 20
2 4
6 8 1012 pH
0 2
4 6
8 1012 pH 100
2 3
4 5
6 7 pH Fig.S8.EffectofpHontheadsorptionof(a)MB,(b)MO,and(c)Hg2+ontothe FeCo/GCNCs@MSNs-SH. 100nm 50nm Fig.S9.TEMimagesof130nmFeCo/GCNCs@MSNs-SHafterthesixconsecutiveadsorptioncyclesforMO.
5 TableS1.Physicochemicalpropertiesofselectedsamples. SampleMSNs BETsurfacearea(m2/g) 661 Porevolume(cm3/g) 0.73 FeCo/GCNCs@MSNs 442 0.65 poresize(nm)2.45 2.19 TableS2.LangmuirisothermparametersforMBadsorptiononvariousadsorbents. Sample MSNsFeCo/GCNCs@MSNsFeCo/GCNCs@MSNs-SH qmax20.3328.9937.17 Langmuirmodelb 1.542.973.49 R20.990.990.99 TableS3.LangmuirisothermparametersforMOadsorptiononvariousadsorbents. Sample MSNsFeCo/GCNCs@MSNsFeCo/GCNCs@MSNs-SH qmax3.3313.3915.75 Langmuirmodelb 0.380.480.57 R20.970.980.99
6 TableS4.ComparisonofadsorptioncapacitiesofFeCo/GCNCs@MSNs-SHwithdifferentadsorbents. icadsorbentsforMBRGO–MnFe2O4hybridFe3O4@CMMWCNTM-MWCNTsMGOCS/Mt-ORECɤ-Fe2O3/positesFeCo/GCNCs@MSNs-SH icadsorbentsforMOm-CS/c-Fe2O3/MWCNTsCS/Mt-ORECCANFɤ-Fe2O3/chitosanAC/NiFe2O4FeCo/GCNCs@MSNs-SH icadsorbentsforHg(II)MAF-SCMNPs Fe3O4@Cu3(btc)2Fe3O4@SiO2–SH PR-MNPsCG-MCSAEPE-PS-MPsTETA-PGMAThiol-functionalizedMGOHMSMCs MGOrGO-Fe
(0)-Fe3O4FeCo/GCNCs@MSNs-SH qe34.752.511.945.8275.99.7193.436.8 qe61.45.0102.028.593.514.6 qe240.0158.2148.8133220.128.746830.962.859.922.0221.4 pH References ̶
S.Baietal.(2012)
1 7.0S.P.Wuetal.(2016)
2 7.0J.L.Gongetal.(2009)
3 7.0
L.Aietal.(2011)
4 9.0Y.F.Guoetal.(2016)
5 7.0
L.Zengetal.(2015)
6 ̶
J.Xiaoetal.(2013)
7 7.0 ThisStudy pH References ̶
H.Y.Zhuetal.(2010)
8 7.0
L.Zengetal.(2015)
6 4.0B.Tanhaeietal.(2015)
9 2.9R.Jiangetal.(2012)10 3.0T.Jiangetal.(2015)11 7.0 Thisstudy pH References 6.0
S.Baoetal.(2017)12 6.0
F.Keetal.(2017)13 6.5S.Zhangetal.(2013)14 4.0
J.Songetal.(2011)15 7.0Y.Wangetal.(2013)16 7.0K.Jainaeetal.(2015)17 6.0Y.Wangetal.(2016)18 ̶
J.Baoetal.(2013)19 6.5X.Zhangetal.(2015)20 6.0Y.F.Guoetal.(2016)
5 7.0P.Bhuniaetal.(2012)21 4.0 Thisstudy
7 References 1S.Bai,
X.Shen,
X.Zhong,
Y.Liu,
G.Zhu,
X.XuandK.Chen,Carbon,2012,50,2337–2346. 2S.P.Wu,
J.C.Huang,
C.H.Zhuo,
F.Y.Zhang,
W.C.ShengandM.Y.Zhu,J..Organomet.Polym.Mater.,2016,26,632–639. 3J.L.Gong,
B.Wang,
G.M.Zeng,
C.P.Yang,
C.G.Niu,
Q.Y.Niu,
W.J.ZhouandY.Liang,
J.Hazard.Mater.,2009,164,1517–1522. 4L.Ai,
C.Zhang,
F.Liao,
Y.Wang,
M.Li,
L.MengandJ.Jiang,
J.Hazard.Mater.,2011,198,282–290. 5Y.F.Guo,
J.Deng,
J.Y.Zhu,
X.J.ZhouandR.B.Bai,RSCAdv.,2016,6,82523–82536. 6L.Zeng,
M.Xie,
Q.Zhang,
Y.Kang,
X.GuoandH.Xiao,Carbohydr.Polym.,2015,123,89–98. 7J.Xiao,
L.Qiu,
X.Jiang,
Y.Zhu,
S.YeandX.Jiang,Carbon,2013,59,372–382.8H.Y.Zhu,
R.Jiang,
L.XiaoandG.M.Zeng,Bioresour.Technol.,2010,101, 5063–5069.9B.Tanhaei,
A.Ayati,
M.LahtinenandM.Sillanpaa,Chem.Eng.J.,2015,259,1– 10.10R.Jiang,
Y.-Q.Fu,
H.-Y.Zhu,
J.YaoandL.Xiao,
J.Appl.Polym.Sci.,2012,125, E540–E549.11T.Jiang,
Y.D.Liang,
Y.J.HeandQ.Wang,
J.Environ.Chem.Eng.,2015,
3, 1740–1751.12S.Bao,
K.Li,
P.Ning,
J.Peng,
X.JinandL.Tang,Appl.Surf.Sci.,2017,393, 457–466.13F.Ke,
J.Jiang,
Y.Li,
J.Liang,
X.WanandS.Ko,Appl.Surf.Sci.,2017,413, 266–274.14S.Zhang,
Y.Zhang,
J.Liu,
Q.Xu,
H.Xiao,
X.WangandJ.Zhou,Chem.Eng.J., 2013,226,30–38.15J.Song,
H.KongandJ.Jang,
J.ColloidInterfaceSci.,2011,359,505–511.16Y.Wang,
Y.Qi,
Y.Li,
J.Wu,
X.Ma,
C.YuandL.Ji,
J.Hazard.Mater.,2013, 260,9–15.17K.Jainae,
N.Sukpirom,
S.FuangswasdiandF.Unob,
J.Ind.Eng.Chem.,2015, 23,273–278.18Y.Wang,
Y.Zhang,
C.Hou,
X.HeandM.Liu,
J.TaiwanInst.Chem.E.,2016, 58,283–289.19J.Bao,
Y.FuandZ.H.Bao,NanoscaleRes.Lett.,2013,8,486–492.20X.Zhang,
T.Wu,
Y.Zhang,
D.H.L.Ng,
H.ZhaoandG.Wang,RSCadv.,2015, 5,51446–51453.21P.Bhunia,
G.Kim,
C.BaikandH.Lee,Chem.Commun.,2012,48,9888–9890.
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