Nanoscale zero-valent iron/magnetite carbon composites for highly efficient immobilization of U(Ⅵ)
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摘要
Nanoscale zerovalent iron/magnetic carbon(NZVI/MC) composites were successfully synthesized by simply calcining yellow pine and iron precursors. NZVI/MC pyrolyzed at 800°C(NZVI/MC800) had a higher percentage of NZVI and displayed better resistance to aggregation and oxidation of NZVI than samples prepared at other temperatures. The NZVI/MC800 material was applied for the elimination of U(Ⅵ) from aqueous solutions. The results suggested that the NZVI/MC800 displayed excellent adsorption capacity(203.94 mg/g)toward U(Ⅵ). The significant adsorption capacity and fast adsorption kinetics were attributed to the presence of well-dispersed NZVI, which could quickly reduce U(Ⅵ) into U(Ⅳ), trapping the guest U(Ⅳ) in the porous biocarbon matrix. The removal of U(Ⅵ) on the NZVI/MC samples was strongly affected by solution pH. The NZVI/MC samples also displayed outstanding reusability for U(Ⅵ) removal after multiple cycles. These findings indicate that NZVI/MC has great potential for remediation of wastewater containing U(Ⅵ).
Nanoscale zerovalent iron/magnetic carbon(NZVI/MC) composites were successfully synthesized by simply calcining yellow pine and iron precursors. NZVI/MC pyrolyzed at 800°C(NZVI/MC800) had a higher percentage of NZVI and displayed better resistance to aggregation and oxidation of NZVI than samples prepared at other temperatures. The NZVI/MC800 material was applied for the elimination of U(Ⅵ) from aqueous solutions. The results suggested that the NZVI/MC800 displayed excellent adsorption capacity(203.94 mg/g)toward U(Ⅵ). The significant adsorption capacity and fast adsorption kinetics were attributed to the presence of well-dispersed NZVI, which could quickly reduce U(Ⅵ) into U(Ⅳ), trapping the guest U(Ⅳ) in the porous biocarbon matrix. The removal of U(Ⅵ) on the NZVI/MC samples was strongly affected by solution pH. The NZVI/MC samples also displayed outstanding reusability for U(Ⅵ) removal after multiple cycles. These findings indicate that NZVI/MC has great potential for remediation of wastewater containing U(Ⅵ).
Nanoscale zerovalent iron/magnetic carbon(NZVI/MC) composites were successfully synthesized by simply calcining yellow pine and iron precursors. NZVI/MC pyrolyzed at 800°C(NZVI/MC800) had a higher percentage of NZVI and displayed better resistance to aggregation and oxidation of NZVI than samples prepared at other temperatures. The NZVI/MC800 material was applied for the elimination of U(Ⅵ) from aqueous solutions. The results suggested that the NZVI/MC800 displayed excellent adsorption capacity(203.94 mg/g)toward U(Ⅵ). The significant adsorption capacity and fast adsorption kinetics were attributed to the presence of well-dispersed NZVI, which could quickly reduce U(Ⅵ) into U(Ⅳ), trapping the guest U(Ⅳ) in the porous biocarbon matrix. The removal of U(Ⅵ) on the NZVI/MC samples was strongly affected by solution pH. The NZVI/MC samples also displayed outstanding reusability for U(Ⅵ) removal after multiple cycles. These findings indicate that NZVI/MC has great potential for remediation of wastewater containing U(Ⅵ).
引文
Abdi,S.,Nasiri,M.,Mesbahi,A.,Khani,M.,2017.Investigation of uranium(VI)adsorption by polypyrrole.J.Hazard.Mater.332,132-139.
Chen,C.L.,Wang,X.K.,2006.Adsorption of Ni(II)from aqueous solution using oxidized multiwall carbon nanotubes.Ind.Eng.Chem.Res.45,9144-9149.
Chen,C.L.,Hu,J.,Shao,D.D.,Li,J.X.,Wang,X.K.,2009.Adsorption behavior of multiwall carbon nanotube/iron oxide magnetic composites for Ni(II)and Sr(II).J.Hazard.Mater.164,923-928.
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Chen,C.L.,Zhu,K.R.,Chen,Alsaedi,A.,Hayat,T.,2018.Synthesis of Ag nanoparticles decoration on magnetic carbonized polydopamine nanospheres for effective catalytic reduction of Cr(VI).J.Colloid Interface Sci.526,1-8.
Cheng,W.C.,Ding,C.C.,Nie,X.Q.,Duan,T.,Ding,R.R.,2017.Fabrication of 3D macroscopic graphene oxide composites supported by montmorillonite for efficient U(VI)wastewater purification.ACS Sustain.Chem.Eng.5,5503-5511.
Crane,R.A.,Scott,T.,2014.The removal of uranium onto carbon supported nanoscale zero-valent iron particles.J.Nanopart.Res.16,2813.
Das,D.D.,Schnitzer,M.I.,Monreal,C.M.,Mayer,P.,2009.Chemical composition of acid-base fractions separated from biooil derived by fast pyrolysis of chicken manure.Bioresour.Technol.100,6524-6532.
Ding,C.C.,Cheng,W.C.,Wang,X.X.,Wu,Z.Y.,Sun,Y.B.,Chen,C.L.,et al.,2016.Competitive sorption of Pb(II),Cu(II)and Ni(II)on carbonaceous nanofibers:a spectroscopic and modeling approach.J.Hazard.Mater.313,253-261.
Ding,C.C.,Cheng,W.C.,Nie,X.Q.,Yi,F.C.,2017.Synergistic mechanism of U(VI)sequestration by magnetite-graphene oxide composites:evidence from spectroscopic and theoretical calculation.Chem.Eng.J.324,113-121.
Ganesan,P.,Kamaraj,R.,Vasudevan,S.,2013.Application of isotherm,kinetic and thermodynamic models for the adsorption of nitrate ions on graphene from aqueous solution.J.Taiwan Inst.Chem.Eng.44,808-814.
Gao,Y.,Chen,K.,Tan,X.L.,Wang,X.L.,Alsaedi,A.,Hayat,T.,et al.,2017.Interaction mechanism of Re(VII)with zirconium dioxide nanoparticles archored onto reduced graphene oxides.ACSSustain.Chem.Eng.5,2163-2171.
Hu,Y.,Jensen,J.O.,Zhang,W.,Cleemann,L.N.,Xing,W.,Bjerrum,N.J.,et al.,2014.Hollow spheres of iron carbide nanoparticles encased in graphitic layers as oxygen reduction catalysts.Angew.Chem.Int.Ed.53(14),3675-3679.
Li,Y.M.,Li,J.F.,Zhang,Y.L.,2012.Mechanism insights into enhanced Cr(VI)removal using nanoscale zerovalent iron supported on the pillared bentonite by macroscopic and spectroscopic studies.J.Hazard.Mater.227,211-9218.
Li,J.,Chen,C.L.,Zhao,Y.,Hu,J.,Shao,D.D.,Wang,X.K.,2013a.Synthesis of water-dispersible Fe3O4@β-cyclodextrin by plasma-induced grafting technique for pollutant treatment.Chem.Eng.J.229,296-303.
Li,Y.,Zhu,S.M.,Liu,Q.L.,Chen,Z.X.,Gu,J.J.,Zhu,C.L.,et al.,2013b.N-doped porous carbon with magnetic particles formed in situ for enhanced Cr(VI)removal.Water Res.47(12),4188-4197.
Li,J.,Shao,Z.Y.,Chen,C.L.,Wang,X.K.,2014.Hierarchical GOs/Fe3O4/PANI magnetic composites as adsorbent for ionic dye pollution treatment.RSC Adv.4,38192-38198.
Li,J.,Chen,C.L.,Zhu,K.R.,Wang,X.K.,2016.Nanoscale zero-valent iron particles modified on reduced graphene oxides using a plasma technique for Cd(II)removal.J.Taiwan Inst.Chem.Eng.59,389-394.
Li,J.,Li,X.D.,Hayat,T.,Alsaedi,A.,Chen,C.L.,2017.Screening of zirconium-based metal-organic frameworks for efficiently simultaneous adsorption of antimonite(Sb(III))and antimonate(Sb(V))from aqueous solution.ACS Sustain.Chem.Eng.5,11496-11503.
Liang,L.P.,Yang,W.J.,Guan,X.H.,Li,J.L.,Xu,Z.J.,Wu,J.,Huang,Y.Y.,et al.,2013.Kinetics and mechanisms of p H-dependent selenite removal by zero valent iron.Water Res.47(15),5846-5855.
Liang,L.P.,Guan,X.H.,Shi,Z.,Li,J.X.,Wu,Y.N.,Tratnyek,P.G.,2014.Coupled effects of aging and weak magnetic fields on sequestration of selenite by zero-valent iron.Environ.Sci.Technol.48(11),6326-6334.
Liu,Y.,Phenrat,T.,Lowry,G.V.,2007.Effect of TCE concentration and dissolved groundwater solutes on NZVI-promoted TCEdechlorination and H2evolution.Environ.Sci.Technol.41,7881-7887.
Liu,T.Y.,Wang,Z.L.,Yan,X.X.,Zhang,B.,2014.Removal of mercury(II)and chromium(VI)from wastewater using a new and effective composite:pumice-supported nanoscale zero-valent iron.Chem.Eng.J.245,34-40.
Liu,H.B.,Li,M.X.,Chen,T.H.,Chen,C.L.,Alharbi,N.S.,Hayat,T.,et al.,2017a.New synthesis of nZVI/C composites as an efficient adsorbent for the uptake of U(VI)from aqueous solutions.Environ.Sci.Technol.51,9227-9237.
Liu,H.B.,Zhu,Y.K.,Xu,B.,Li,P.,Sun,Y.B.,Chen,T.H.,et al.,2017b.Mechanical investigation of U(VI)on pyrrhotite by batch,EXAFS and modeling techniques.J.Hazard.Mater.322,488-498.
Liu,Q.,Liu,X.,Feng,H.,Shui,H.,Yu,R.,2017c.Metal organic framework-derived Fe/carbon porous composite with low Fe content for lightweight and highly efficient electromagnetic wave absorber.Chem.Eng.J.314,320-327.
Lv,X.S.,Xue,X.Q.,Jiang,G.G.,Wu,D.L.,Sheng,T.T.,Zhou,H.Y.,et al.,2014.Nanoscale zero-valent iron(nZVI)assembled on magnetic Fe3O4/graphene for chromium(VI)removal from aqueous solution.J.Colloid Interface Sci.417,51-59.
Mellah,A.,Chegrouche,S.,Barkat,M.,2006.The removal of uranium(VI)from aqueous solutions onto activated carbon:kinetic and thermodynamic investigations.J.Colloid Interface Sci.296(2),434-441.
Montesinos,V.N.,Quici,N.,Halac,E.B.,Leyva,A.G.,Custo,G.,Bengio,S.,et al.,2014.Highly efficient removal of Cr(VI)from water with nanoparticulated zerovalent iron:understanding the Fe(III)-Cr(III)passive outer layer structure.Chem.Eng.J.244,569-575.
Singh,A.,Catalano,J.G.,Ulrich,K.U.,Giammar,D.E.,2012.Molecular-scale structure of uranium(VI)immobilized with goethite and phosphate.Environ.Sci.Technol.46,6594-6603.
Sun,Y.B.,Wu,Z.Y.,Wang,X.X.,Ding,C.C.,Cheng,W.C.,Yu,S.H.,et al.,2016.Macroscopic and microscopic investigation of U(VI)and Eu(III)adsorption on carbonaceous nanofibers.Environ.Sci.Technol.50,4459-4467.
Sun,Y.B.,Wang,X.X.,Ai,Y.J.,Yu,Z.M.,Huang,W.,Chen,C.L.,et al.,2017.Interaction of sulfonated graphene oxide with U(VI)studied by spectroscopic analysis and theoretical calculations.Chem.Eng.J.310,292-299.
Wang,Y.,Fang,Z.Q.,Kang,Y.,Tsang,E.P.,2014.Immobilization and phytotoxicity of chromium in contaminated soil remediated by CMC-stabilized nZVI.J.Hazard.Mater.275,230-237.
Wu,Q.Y.,Lan,J.H.,Wang,C.Z.,Zhao,Y.L.,Chai,Z.F.,Shi,W.Q.,2014.Understanding the interactions of neptunium and plutonium ions with graphene oxide:scalar-relativistic DFTinvestigations.J.Phys.Chem.A 118(44),10273-10280.
Xiang,S.H.,Cheng,W.C.,Nie,X.Q.,Ding,C.C.,Yi,F.C.,Asiri,A.M.,et al.,2018.Zero-valent iron-aluminum for the fast and effective U(VI)removal.J.Taiwan Inst.Chem.Eng.85,186-192.
Yang,S.B.,Chen,C.L.,Chen,Y.,Li,J.X.,Wang,D.Q.,Wang,X.K.,et al.,2015.Competitive adsorption of Pb(II),Ni(II)and Sr(II)ions on graphene oxides:a combined experimental and theoretical study.ChemPlusChem 80,480-484.
Yu,W.C.,Lian,F.,Cui,G.N.,Liu,Z.Q.,2018.N-doping effectively enhances the adsorption capacity of biochar for heavy metal ions from aqueous solution.Chemosphere 193,8-16.
Zhao,D.L.,Zhang,Q.,Xuan,H.,Chen,Y.,Feng,S.J.,Alsaedi,A.,et al.,2007.EDTA functionalized Fe3O4/graphene oxide for the efficient removal of U(VI).J.Colloid Interface Sci.506,300-307.
Zhao,G.X.,Jiang,L.,He,Y.D.,Li,J.X.,Dong,H.L.,Wang,X.K.,et al.,2011.Sulfonated graphene for persistent aromatic pollutant management.Adv.Mater.23(34),3959-3963.
Zhao,G.X.,Wen,T.,Yang,X.,Yang,S.B.,Liao,J.L.,Hu,J.,et al.,2012.Preconcentration of U(VI)ions on few-layered graphene oxide nanosheets from aqueous solutions.Dalton Trans.41,6182-6188.
Zhao,D.L.,Chen,L.L.,Xu,M.W.C.,Feng,S.J.,Ding,Y.,Wakeel,M.,et al.,2017.Amino siloxane oligomer modified graphene oxide composite for the efficient capture of U(VI)and Eu(III)from aqueous solution.ACS Sustain.Chem.Eng.5,10290-10297.
Zhao,D.L.,Zhu,H.Y.,Wu,C.N.,Feng,S.J.,Alsaedi,A.,Hayat,T.,et al.,2018.Facile synthesis of magnetic Fe3O4/graphene composites for enhanced U(VI)removal.Appl.Surf.Sci.444,691-698.
Zhou,Z.,Liu,Y.G.,Liu,S.B.,Liu,H.Y.,Zeng,G.M.,Tan,X.F.,et al.,2017.Sorption performance and mechanisms of arsenic(V)removal by magnetic gelatin-modified biochar.Chem.Eng.J.314,223-231.
Zhu,J.H.,Gu,H.B.,Guo,J.,Chen,M.J.,Wei,H.G.,Luo,Z.P.,et al.,2014.Mesoporous magnetic carbon nanocomposite fabrics for highly efficient Cr(VI)removal.J.Mater.Chem.A 2,2256-2265.
Zhu,K.R.,Chen,C.L.,Xu,H.,Gao,Y.,Tan,X.L.,Alsaedi,A.,et al.,2017a.Cr(VI)reduction and immobilization by core-double-shell structured magnetic polydopamine@zeolitic idazolate frameworks-8 microspheres.ACS Sustain.Chem.Eng.5,6795-6802.
Zhu,K.R.,Lu,S.H.,Gao,Y.,Zhang,R.,Tan,X.L.,Chen,C.L.,2017b.Fabrication of hierarchical core-shell polydopamine@MgAl-LDHs composites for the efficient enrichment of radionuclides.Appl.Surf.Sci.396,1726-1735.
Zhu,K.R.,Chen,C.L.,Xu,M.,Chen,K.,Tan,X.L.,Wakeel,M.,et al.,2018.In situ carbothermal reduction synthesis of Fe nanocrystals embedded into N-doped carbon nanospheres for highly efficient U(VI)adsorption and reduction.Chem.Eng.J.331,395-405.
Chen,C.L.,Wang,X.K.,2006.Adsorption of Ni(II)from aqueous solution using oxidized multiwall carbon nanotubes.Ind.Eng.Chem.Res.45,9144-9149.
Chen,C.L.,Hu,J.,Shao,D.D.,Li,J.X.,Wang,X.K.,2009.Adsorption behavior of multiwall carbon nanotube/iron oxide magnetic composites for Ni(II)and Sr(II).J.Hazard.Mater.164,923-928.
Chen,L.L.,Feng,S.J.,Zhao,D.L.,Chen,S.H.,Li,F.F.,Chen,C.L.,2017.Efficient sorption and reduction of U(VI)on zero-valent iron-polyaniline-graphene aerogel ternary composite.J.Colloid Interface Sci.490,197-206.
Chen,C.L.,Zhu,K.R.,Chen,Alsaedi,A.,Hayat,T.,2018.Synthesis of Ag nanoparticles decoration on magnetic carbonized polydopamine nanospheres for effective catalytic reduction of Cr(VI).J.Colloid Interface Sci.526,1-8.
Cheng,W.C.,Ding,C.C.,Nie,X.Q.,Duan,T.,Ding,R.R.,2017.Fabrication of 3D macroscopic graphene oxide composites supported by montmorillonite for efficient U(VI)wastewater purification.ACS Sustain.Chem.Eng.5,5503-5511.
Crane,R.A.,Scott,T.,2014.The removal of uranium onto carbon supported nanoscale zero-valent iron particles.J.Nanopart.Res.16,2813.
Das,D.D.,Schnitzer,M.I.,Monreal,C.M.,Mayer,P.,2009.Chemical composition of acid-base fractions separated from biooil derived by fast pyrolysis of chicken manure.Bioresour.Technol.100,6524-6532.
Ding,C.C.,Cheng,W.C.,Wang,X.X.,Wu,Z.Y.,Sun,Y.B.,Chen,C.L.,et al.,2016.Competitive sorption of Pb(II),Cu(II)and Ni(II)on carbonaceous nanofibers:a spectroscopic and modeling approach.J.Hazard.Mater.313,253-261.
Ding,C.C.,Cheng,W.C.,Nie,X.Q.,Yi,F.C.,2017.Synergistic mechanism of U(VI)sequestration by magnetite-graphene oxide composites:evidence from spectroscopic and theoretical calculation.Chem.Eng.J.324,113-121.
Ganesan,P.,Kamaraj,R.,Vasudevan,S.,2013.Application of isotherm,kinetic and thermodynamic models for the adsorption of nitrate ions on graphene from aqueous solution.J.Taiwan Inst.Chem.Eng.44,808-814.
Gao,Y.,Chen,K.,Tan,X.L.,Wang,X.L.,Alsaedi,A.,Hayat,T.,et al.,2017.Interaction mechanism of Re(VII)with zirconium dioxide nanoparticles archored onto reduced graphene oxides.ACSSustain.Chem.Eng.5,2163-2171.
Hu,Y.,Jensen,J.O.,Zhang,W.,Cleemann,L.N.,Xing,W.,Bjerrum,N.J.,et al.,2014.Hollow spheres of iron carbide nanoparticles encased in graphitic layers as oxygen reduction catalysts.Angew.Chem.Int.Ed.53(14),3675-3679.
Li,Y.M.,Li,J.F.,Zhang,Y.L.,2012.Mechanism insights into enhanced Cr(VI)removal using nanoscale zerovalent iron supported on the pillared bentonite by macroscopic and spectroscopic studies.J.Hazard.Mater.227,211-9218.
Li,J.,Chen,C.L.,Zhao,Y.,Hu,J.,Shao,D.D.,Wang,X.K.,2013a.Synthesis of water-dispersible Fe3O4@β-cyclodextrin by plasma-induced grafting technique for pollutant treatment.Chem.Eng.J.229,296-303.
Li,Y.,Zhu,S.M.,Liu,Q.L.,Chen,Z.X.,Gu,J.J.,Zhu,C.L.,et al.,2013b.N-doped porous carbon with magnetic particles formed in situ for enhanced Cr(VI)removal.Water Res.47(12),4188-4197.
Li,J.,Shao,Z.Y.,Chen,C.L.,Wang,X.K.,2014.Hierarchical GOs/Fe3O4/PANI magnetic composites as adsorbent for ionic dye pollution treatment.RSC Adv.4,38192-38198.
Li,J.,Chen,C.L.,Zhu,K.R.,Wang,X.K.,2016.Nanoscale zero-valent iron particles modified on reduced graphene oxides using a plasma technique for Cd(II)removal.J.Taiwan Inst.Chem.Eng.59,389-394.
Li,J.,Li,X.D.,Hayat,T.,Alsaedi,A.,Chen,C.L.,2017.Screening of zirconium-based metal-organic frameworks for efficiently simultaneous adsorption of antimonite(Sb(III))and antimonate(Sb(V))from aqueous solution.ACS Sustain.Chem.Eng.5,11496-11503.
Liang,L.P.,Yang,W.J.,Guan,X.H.,Li,J.L.,Xu,Z.J.,Wu,J.,Huang,Y.Y.,et al.,2013.Kinetics and mechanisms of p H-dependent selenite removal by zero valent iron.Water Res.47(15),5846-5855.
Liang,L.P.,Guan,X.H.,Shi,Z.,Li,J.X.,Wu,Y.N.,Tratnyek,P.G.,2014.Coupled effects of aging and weak magnetic fields on sequestration of selenite by zero-valent iron.Environ.Sci.Technol.48(11),6326-6334.
Liu,Y.,Phenrat,T.,Lowry,G.V.,2007.Effect of TCE concentration and dissolved groundwater solutes on NZVI-promoted TCEdechlorination and H2evolution.Environ.Sci.Technol.41,7881-7887.
Liu,T.Y.,Wang,Z.L.,Yan,X.X.,Zhang,B.,2014.Removal of mercury(II)and chromium(VI)from wastewater using a new and effective composite:pumice-supported nanoscale zero-valent iron.Chem.Eng.J.245,34-40.
Liu,H.B.,Li,M.X.,Chen,T.H.,Chen,C.L.,Alharbi,N.S.,Hayat,T.,et al.,2017a.New synthesis of nZVI/C composites as an efficient adsorbent for the uptake of U(VI)from aqueous solutions.Environ.Sci.Technol.51,9227-9237.
Liu,H.B.,Zhu,Y.K.,Xu,B.,Li,P.,Sun,Y.B.,Chen,T.H.,et al.,2017b.Mechanical investigation of U(VI)on pyrrhotite by batch,EXAFS and modeling techniques.J.Hazard.Mater.322,488-498.
Liu,Q.,Liu,X.,Feng,H.,Shui,H.,Yu,R.,2017c.Metal organic framework-derived Fe/carbon porous composite with low Fe content for lightweight and highly efficient electromagnetic wave absorber.Chem.Eng.J.314,320-327.
Lv,X.S.,Xue,X.Q.,Jiang,G.G.,Wu,D.L.,Sheng,T.T.,Zhou,H.Y.,et al.,2014.Nanoscale zero-valent iron(nZVI)assembled on magnetic Fe3O4/graphene for chromium(VI)removal from aqueous solution.J.Colloid Interface Sci.417,51-59.
Mellah,A.,Chegrouche,S.,Barkat,M.,2006.The removal of uranium(VI)from aqueous solutions onto activated carbon:kinetic and thermodynamic investigations.J.Colloid Interface Sci.296(2),434-441.
Montesinos,V.N.,Quici,N.,Halac,E.B.,Leyva,A.G.,Custo,G.,Bengio,S.,et al.,2014.Highly efficient removal of Cr(VI)from water with nanoparticulated zerovalent iron:understanding the Fe(III)-Cr(III)passive outer layer structure.Chem.Eng.J.244,569-575.
Singh,A.,Catalano,J.G.,Ulrich,K.U.,Giammar,D.E.,2012.Molecular-scale structure of uranium(VI)immobilized with goethite and phosphate.Environ.Sci.Technol.46,6594-6603.
Sun,Y.B.,Wu,Z.Y.,Wang,X.X.,Ding,C.C.,Cheng,W.C.,Yu,S.H.,et al.,2016.Macroscopic and microscopic investigation of U(VI)and Eu(III)adsorption on carbonaceous nanofibers.Environ.Sci.Technol.50,4459-4467.
Sun,Y.B.,Wang,X.X.,Ai,Y.J.,Yu,Z.M.,Huang,W.,Chen,C.L.,et al.,2017.Interaction of sulfonated graphene oxide with U(VI)studied by spectroscopic analysis and theoretical calculations.Chem.Eng.J.310,292-299.
Wang,Y.,Fang,Z.Q.,Kang,Y.,Tsang,E.P.,2014.Immobilization and phytotoxicity of chromium in contaminated soil remediated by CMC-stabilized nZVI.J.Hazard.Mater.275,230-237.
Wu,Q.Y.,Lan,J.H.,Wang,C.Z.,Zhao,Y.L.,Chai,Z.F.,Shi,W.Q.,2014.Understanding the interactions of neptunium and plutonium ions with graphene oxide:scalar-relativistic DFTinvestigations.J.Phys.Chem.A 118(44),10273-10280.
Xiang,S.H.,Cheng,W.C.,Nie,X.Q.,Ding,C.C.,Yi,F.C.,Asiri,A.M.,et al.,2018.Zero-valent iron-aluminum for the fast and effective U(VI)removal.J.Taiwan Inst.Chem.Eng.85,186-192.
Yang,S.B.,Chen,C.L.,Chen,Y.,Li,J.X.,Wang,D.Q.,Wang,X.K.,et al.,2015.Competitive adsorption of Pb(II),Ni(II)and Sr(II)ions on graphene oxides:a combined experimental and theoretical study.ChemPlusChem 80,480-484.
Yu,W.C.,Lian,F.,Cui,G.N.,Liu,Z.Q.,2018.N-doping effectively enhances the adsorption capacity of biochar for heavy metal ions from aqueous solution.Chemosphere 193,8-16.
Zhao,D.L.,Zhang,Q.,Xuan,H.,Chen,Y.,Feng,S.J.,Alsaedi,A.,et al.,2007.EDTA functionalized Fe3O4/graphene oxide for the efficient removal of U(VI).J.Colloid Interface Sci.506,300-307.
Zhao,G.X.,Jiang,L.,He,Y.D.,Li,J.X.,Dong,H.L.,Wang,X.K.,et al.,2011.Sulfonated graphene for persistent aromatic pollutant management.Adv.Mater.23(34),3959-3963.
Zhao,G.X.,Wen,T.,Yang,X.,Yang,S.B.,Liao,J.L.,Hu,J.,et al.,2012.Preconcentration of U(VI)ions on few-layered graphene oxide nanosheets from aqueous solutions.Dalton Trans.41,6182-6188.
Zhao,D.L.,Chen,L.L.,Xu,M.W.C.,Feng,S.J.,Ding,Y.,Wakeel,M.,et al.,2017.Amino siloxane oligomer modified graphene oxide composite for the efficient capture of U(VI)and Eu(III)from aqueous solution.ACS Sustain.Chem.Eng.5,10290-10297.
Zhao,D.L.,Zhu,H.Y.,Wu,C.N.,Feng,S.J.,Alsaedi,A.,Hayat,T.,et al.,2018.Facile synthesis of magnetic Fe3O4/graphene composites for enhanced U(VI)removal.Appl.Surf.Sci.444,691-698.
Zhou,Z.,Liu,Y.G.,Liu,S.B.,Liu,H.Y.,Zeng,G.M.,Tan,X.F.,et al.,2017.Sorption performance and mechanisms of arsenic(V)removal by magnetic gelatin-modified biochar.Chem.Eng.J.314,223-231.
Zhu,J.H.,Gu,H.B.,Guo,J.,Chen,M.J.,Wei,H.G.,Luo,Z.P.,et al.,2014.Mesoporous magnetic carbon nanocomposite fabrics for highly efficient Cr(VI)removal.J.Mater.Chem.A 2,2256-2265.
Zhu,K.R.,Chen,C.L.,Xu,H.,Gao,Y.,Tan,X.L.,Alsaedi,A.,et al.,2017a.Cr(VI)reduction and immobilization by core-double-shell structured magnetic polydopamine@zeolitic idazolate frameworks-8 microspheres.ACS Sustain.Chem.Eng.5,6795-6802.
Zhu,K.R.,Lu,S.H.,Gao,Y.,Zhang,R.,Tan,X.L.,Chen,C.L.,2017b.Fabrication of hierarchical core-shell polydopamine@MgAl-LDHs composites for the efficient enrichment of radionuclides.Appl.Surf.Sci.396,1726-1735.
Zhu,K.R.,Chen,C.L.,Xu,M.,Chen,K.,Tan,X.L.,Wakeel,M.,et al.,2018.In situ carbothermal reduction synthesis of Fe nanocrystals embedded into N-doped carbon nanospheres for highly efficient U(VI)adsorption and reduction.Chem.Eng.J.331,395-405.