One-Pot Synthesis of LDH/GO Composites as Highly Effective Adsorbents for Decontamination of U(VI)

The removal mechanism of U(VI) on Mg–Al-layered double hydroxide-supported graphene oxide (LDH/GO) composites was investigated by batch, spectroscopic, and surface complexation modeling. The batch experiments showed that the enhanced removal of U(VI) on LDH and LDH/GO composites in the presence of carbonate was observed at pH < 5.0, whereas the presence of carbonate significantly inhibited U(VI) removal at pH starting from 7.0 to 9.0. It is demonstrated that the oxygenated functional groups (i.e., −OH) were responsible for the high effective removal of U(VI) by XPS analysis. The results of XANES and EXAFS spectra indicated that adsorption of U(VI) on LDH/GO composites was inner-sphere surface complexation. According to surface complexation modeling, the removal of U(VI) on LDH/GO composites can be satisfactorily fitted by a diffuse layer model with an ion exchange (X2UO2) and two inner-sphere surface complexes (SOUO2+ and SOUO2(CO3)23– species). The maximum adsorption capacities of LDH and LDH/GO composit...

[1]  T. Hayat,et al.  Experimental and theoretical evidence for competitive interactions of tetracycline and sulfamethazine with reduced graphene oxides , 2016 .

[2]  Xiaoli Tan,et al.  Interaction between Eu(III) and graphene oxide nanosheets investigated by batch and extended X-ray absorption fine structure spectroscopy and by modeling techniques. , 2012, Environmental science & technology.

[3]  Jun Hu,et al.  Efficient removal of arsenate by versatile magnetic graphene oxide composites , 2012 .

[4]  Shubin Yang,et al.  Highly efficient enrichment of radionuclides on graphene oxide-supported polyaniline. , 2013, Environmental science & technology.

[5]  Xiangke Wang,et al.  Effects of Bacillus subtilis on the reduction of U(VI) by nano-Fe0 , 2015 .

[6]  X. Chen,et al.  High U(VI) adsorption capacity by mesoporous Mg(OH)2 deriving from MgO hydrolysis , 2013 .

[7]  Tao Wen,et al.  Preconcentration of U(VI) ions on few-layered graphene oxide nanosheets from aqueous solutions. , 2012, Dalton transactions.

[8]  Congcong Ding,et al.  The sequestration of U(VI) on functional β-cyclodextrin-attapulgite nanorods , 2014, Journal of Radioanalytical and Nuclear Chemistry.

[9]  W. S. Hummers,et al.  Preparation of Graphitic Oxide , 1958 .

[10]  Yubing Sun,et al.  The sorption of Cd(II) and U(VI) on sepiolite: A combined experimental and modeling studies , 2015 .

[11]  Shubin Yang,et al.  Sequestration of uranium on fabricated aluminum co-precipitated with goethite (Al-FeOOH) , 2014 .

[12]  Jun Wang,et al.  Enhanced adsorption of uranium (VI) using a three-dimensional layered double hydroxide/graphene hybrid material , 2015 .

[13]  M Newville,et al.  EXAFS analysis using FEFF and FEFFIT. , 2001, Journal of synchrotron radiation.

[14]  M Newville,et al.  ATHENA, ARTEMIS, HEPHAESTUS: data analysis for X-ray absorption spectroscopy using IFEFFIT. , 2005, Journal of synchrotron radiation.

[15]  Xiangke Wang,et al.  Enhanced photocatalytic degradation of methylene blue under visible irradiation on graphene@TiO2 dyade structure , 2012 .

[16]  Shubin Yang,et al.  Enhanced adsorption of Eu(III) on mesoporous Al2O3/expanded graphite composites investigated by macroscopic and microscopic techniques. , 2012, Dalton transactions.

[17]  Xiangke Wang,et al.  The removal of U(VI) from aqueous solution by oxidized multiwalled carbon nanotubes. , 2012, Journal of environmental radioactivity.

[18]  Jie Cao,et al.  The roles of a pillared bentonite on enhancing Se(VI) removal by ZVI and the influence of co-existing solutes in groundwater. , 2016, Journal of hazardous materials.

[19]  T. Hayat,et al.  Interaction of uranium(VI) with titanate nanotubes by macroscopic and spectroscopic investigation , 2015 .

[20]  X. Tan,et al.  Spectroscopic and modeling investigation of efficient removal of U(VI) on a novel magnesium silicate/diatomite , 2017 .

[21]  Xiangke Wang,et al.  Novel fungus-Fe3O4 bio-nanocomposites as high performance adsorbents for the removal of radionuclides. , 2015, Journal of hazardous materials.

[22]  Xiangke Wang,et al.  Comparison of U(VI) removal from contaminated groundwater by nanoporous alumina and non-nanoporous alumina , 2011 .

[23]  Qiang Liu,et al.  Effective self-purification of polynary metal electroplating wastewaters through formation of layered double hydroxides. , 2010, Environmental science & technology.

[24]  Z. X. and,et al.  Hydrothermal Synthesis of Layered Double Hydroxides (LDHs) from Mixed MgO and Al2O3: LDH Formation Mechanism , 2005 .

[25]  Xiangxue Wang,et al.  Adsorption of 4-n-Nonylphenol and Bisphenol-A on Magnetic Reduced Graphene Oxides: A Combined Experimental and Theoretical Studies. , 2015, Environmental science & technology.

[26]  G. Sheng,et al.  Investigation of solution chemistry effects on sorption behavior of radionuclide 64Cu(II) on illite , 2011 .

[27]  Xiangke Wang,et al.  Fabrication of fungus/attapulgite composites and their removal of U(VI) from aqueous solution , 2015 .

[28]  Qingyuan Hu,et al.  New insights into the primary roles of diatomite in the enhanced sequestration of UO22+ by zerovalent iron nanoparticles: An advanced approach utilizing XPS and EXAFS , 2016 .

[29]  T. Hayat,et al.  Different Interaction Mechanisms of Eu(III) and (243)Am(III) with Carbon Nanotubes Studied by Batch, Spectroscopy Technique and Theoretical Calculation. , 2015, Environmental science & technology.

[30]  Congcong Ding,et al.  The efficient enrichment of U(VI) by graphene oxide-supported chitosan , 2014 .

[31]  T. Wen,et al.  One-pot synthesis of water-swellable Mg-Al layered double hydroxides and graphene oxide nanocomposites for efficient removal of As(V) from aqueous solutions. , 2013, ACS applied materials & interfaces.

[32]  A. Alsaedi,et al.  High sorption of U(VI) on graphene oxides studied by batch experimental and theoretical calculations , 2016 .

[33]  T. Hayat,et al.  Macroscopic, Spectroscopic, and Theoretical Investigation for the Interaction of Phenol and Naphthol on Reduced Graphene Oxide. , 2017, Environmental science & technology.

[34]  T. Hayat,et al.  Performances and mechanisms of Mg/Al and Ca/Al layered double hydroxides for graphene oxide removal from aqueous solution , 2016 .

[35]  Yunhai Liu,et al.  Coagulation Behavior of Graphene Oxide on Nanocrystallined Mg/Al Layered Double Hydroxides: Batch Experimental and Theoretical Calculation Study. , 2016, Environmental science & technology.

[36]  Wencai Cheng,et al.  Simultaneous adsorption and reduction of U(VI) on reduced graphene oxide-supported nanoscale zerovalent iron. , 2014, Journal of hazardous materials.

[37]  Jiaxing Li,et al.  Enhanced sequestration of Cr(VI) by nanoscale zero-valent iron supported on layered double hydroxide by batch and XAFS study. , 2016, Chemosphere.

[38]  T. Hayat,et al.  Competitive sorption of As(V) and Cr(VI) on carbonaceous nanofibers , 2016 .

[39]  G. Sheng,et al.  Impact of water quality parameters on the sorption of U(VI) onto hematite. , 2012, Journal of environmental radioactivity.

[40]  S. T. Yang,et al.  Characterization of nano-iron oxyhydroxides and their application in UO22+ removal from aqueous solutions , 2011 .

[41]  Zhongxiu Jin,et al.  Plasma synthesis of β-cyclodextrin/Al(OH)3 composites as adsorbents for removal of UO22 + from aqueous solutions , 2015 .

[42]  Shubin Yang,et al.  Enhanced adsorption of ionizable aromatic compounds on humic acid-coated carbonaceous adsorbents , 2012 .

[43]  Shubin Yang,et al.  Tuning the chemistry of graphene oxides by a sonochemical approach: Application of adsorption properties , 2015 .

[44]  T. Hayat,et al.  Interaction of sulfonated graphene oxide with U(VI) studied by spectroscopic analysis and theoretical calculations , 2017 .

[45]  Xiangke Wang,et al.  Determination of chemical affinity of graphene oxide nanosheets with radionuclides investigated by macroscopic, spectroscopic and modeling techniques. , 2014, Dalton transactions.

[46]  Liang Chen,et al.  Removal of radiocobalt from aqueous solution by oxidized MWCNT , 2011, Journal of Radioanalytical and Nuclear Chemistry.

[47]  J. Bargar,et al.  Uranyl adsorption and surface speciation at the imogolite–water interface: Self-consistent spectroscopic and surface complexation models , 2006 .

[48]  Xiangxue Wang,et al.  Mechanistic insights into the decontamination of Th(IV) on graphene oxide-based composites by EXAFS and modeling techniques , 2017 .

[49]  Jiaxing Li,et al.  Enhanced immobilization of ReO4− by nanoscale zerovalent iron supported on layered double hydroxide via an advanced XAFS approach: Implications for TcO4− sequestration , 2016 .

[50]  Rui Zhang,et al.  Adsorption of U(VI) on sericite in the presence of Bacillus subtilis: A combined batch, EXAFS and modeling techniques , 2016 .

[51]  Jiaxing Li,et al.  The retention of uranium and europium onto sepiolite investigated by macroscopic, spectroscopic and modeling techniques , 2014 .

[52]  Shuhong Yu,et al.  Macroscopic and Microscopic Investigation of U(VI) and Eu(III) Adsorption on Carbonaceous Nanofibers. , 2016, Environmental science & technology.

[53]  Yongyao Xia,et al.  Immobilization of Co-Al layered double hydroxides on graphene oxide nanosheets: growth mechanism and supercapacitor studies. , 2012, ACS applied materials & interfaces.

[54]  Shuhong Yu,et al.  Competitive sorption of Pb(II), Cu(II) and Ni(II) on carbonaceous nanofibers: A spectroscopic and modeling approach. , 2016, Journal of hazardous materials.

[55]  Jiaxing Li,et al.  Plasma induced grafting carboxymethyl cellulose on multiwalled carbon nanotubes for the removal of UO(2)(2+) from aqueous solution. , 2009, The journal of physical chemistry. B.

[56]  Tianhu Chen,et al.  Mechanical investigation of U(VI) on pyrrhotite by batch, EXAFS and modeling techniques. , 2017, Journal of hazardous materials.

[57]  Wencai Cheng,et al.  Adsorption and desorption of U(VI) on functionalized graphene oxides: a combined experimental and theoretical study. , 2015, Environmental science & technology.

[58]  Juan Gao,et al.  Rapid Destruction of Tetrabromobisphenol A by Iron(III)-Tetraamidomacrocyclic Ligand/Layered Double Hydroxide Composite/H2O2 System. , 2017, Environmental science & technology.