References

  1. N.K. Lazaridis, D.N. Bakoyannakis, E.A. Deliyanni, Chromium(VI) sorptive removal from aqueous solutions by nanocrystalline akaganèite, Chemosphere, 58 (2005) 65–73.
  2. Y. Xu, D. Zhao, Reductive immobilization of chromate in water and soil using stabilized iron nanoparticles, Water Res., 41 (2007) 2101–2108.
  3. Y. Lin, W. Cai, X. Tian, X. Liu, G. Wang, C. Liang, Polyacrylonitrile/ferrous chloride composite porous nanofibers and their strong Cr-removal performance, J. Mater. Chem., 21 (2011) 991–997.
  4. D. Petruzzelli, R. Passino, G. Tiravanti, Ion exchange process for chromium removal and recovery from tannery wastes, Water Sci. Technol., 34 (1995) 2612–2617.
  5. J.-K. Yang, S.-M. Lee, Removal of Cr(VI) and humic acid by using TiO2 photocatalysis, Chemosphere, 63 (2006) 1677–1684.
  6. Y.-X. Liu, D.-X. Yuan, J.-M. Yan, Q.-L. Li, T. Ouyang, Electrochemical removal of chromium from aqueous solutions using electrodes of stainless steel nets coated with single wall carbon nanotubes, J. Hazard. Mater., 186 (2011) 473–480.
  7. X. Feng, C. Liang, J. Yu, X. Jiang, Facile fabrication of graphene oxide-polyethylenimine composite and its application for the Cr(VI) removal, Sep. Sci. Technol., 53 (2018) 2376–2387.
  8. C. Liang, X. Feng, J. Yu, X. Jiang, Facile one-step hydrothermal syntheses of graphene oxide-MnO2 composite and their application in removing heavy metal ions, Nano-Micro Lett., 13 (2018) 1179–1184.
  9. F. Zhou, X. Feng, J. Yu, X. Jiang, High performance of 3D porous graphene/lignin/sodium alginate composite for adsorption of Cd(II) and Pb(II), Environ, Sci. Pollut. Res., 25 (2018) 15651– 15661.
  10. H. Jabeen, V. Chandra, S. Jung, J.W. Lee, K.S. Kim, S.B. Kim, Enhanced Cr(VI) removal using iron nanoparticle decorated graphene, Nanoscale, 3 (2011) 3583–3585.
  11. S. Chowdhury, R. Balasubramanian, Recent advances in the use of graphene-family nanoadsorbents for removal of toxic pollutants from wastewater, Adv. Colloid Interface Sci., 204 (2014) 35–56.
  12. S. Zhang, M. Zeng, W. Xu, J. Li, J. Li, J. Xu, X. Wang, Polyaniline nanorods dotted on graphene oxide nanosheets as a novel super adsorbent for Cr(VI), Dalton Trans., 42 (2013) 7854–7858.
  13. H. Ge, Z. Ma, Microwave preparation of triethylenetetramine modified graphene oxide/chitosan composite for adsorption of Cr(VI), Carbohydr. Polym., 131 (2015) 280–287.
  14. P.K. Kanaujia, D. Pardasani, A.K. Purohit, V. Tak, D.K. Dubey, Polyelectrolyte functionalized multi-walled carbon nanotubes as strong anion-exchange material for the extraction of acidic degradation products of nerve agents, J. Chromatogr. A, 1218 (2011) 9307–9313.
  15. B.P. Tripathi, N.C. Dubey, M. Stamm, Functional polyelectrolyte multilayer membranes for water purification applications, J. Hazard. Mater., 252–253 (2013) 401–412.
  16. X. Wang, Z. Liu, X. Ye, K. Hu, H. Zhong, J. Yu, M. Jin, Z. Guo, A facile one-step approach to functionalized graphene oxidebased hydrogels used as effective adsorbents toward anionic dyes, Appl. Surf. Sci., 308 (2014) 82–90.
  17. W. Ren, Y. Fang, E. Wang, A binary functional substrate for enrichment and ultrasensitive SERS spectroscopic detection of folic acid using graphene oxide/Ag nanoparticle hybrids, ACS Nano, 5 (2011) 6425–6433.
  18. J. Hu, I.M.C. Lo, G. Chen, Comparative study of various magnetic nanoparticles for Cr(VI) removal, Sep. Purif. Technol., 56 (2007) 249–256.
  19. L.C. Oliveira, R.V.R. Rios, J.D. Fabris, K. Sapag, V.K. Garg, R.M. Lago, Clay-iron oxide magnetic composites for the adsorption of contaminants in water, Carbon, 22 (2003) 169–177.
  20. M. Liu, T. Wen, X. Wu, C. Chen, J. Hu, J. Li, X. Wang, Synthesis of porous Fe3O4 hollow microspheres/graphene oxide composite for Cr(VI) removal, Dalton Trans., 42 (2013) 14710–14717.
  21. H. Wang, X. Yuan, Y. Wu, X. Chen, L. Leng, H. Wang, H. Li, G. Zeng, Facile synthesis of polypyrrole decorated reduced graphene oxide-Fe3O4 magnetic composites and its application for the Cr(VI) removal, Chem. Eng. J., 262 (2015) 597–606.
  22. T. Wang, L. Zhang, C. Li, W. Yang, T. Song, C. Tang, Y. Meng, S. Dai, H. Wang, L. Chai, J. Luo, Synthesis of core-shell magnetic Fe3O4@poly(m-phenylenediamine) particles for chromium reduction and adsorption, Environ. Sci. Technol., 49 (2015) 5654–5662.
  23. G. Wójcik, Z. Hubicki, Sorption and reduction of chromate( VI) ions on Purolite A 830, Sep. Sci. Technol., 51 (2016) 2539–2546.
  24. G. Wójcik, Z. Hubicki, Investigations of chromium (VI) ion sorption and reduction on strongly basic anion exchanger, Sep. Sci. Technol., 53 (2017) 1088–1096.
  25. Y.S. Ho, G. McKay, Pseudo-second order model for sorption processes, Process Biochem., 34 (1999) 451–465.
  26. W.J. Weber, J.C. Morris, Kinetics of adsorption on carbon from solution, J. Sanit. Eng. Div. Am. Soc. Civ. Eng., 89 (1963) 31–60.
  27. J. Yang, X. Jiang, F. Jiao, J. Yu, The oxygen-rich pentaerythritol modified multi-walled carbon nanotube as an efficient adsorbent for aqueous removal of alizarin yellow R and alizarin red S, Appl. Surf. Sci., 436 (2018) 198–206.
  28. X. Xu, J. Zou, J. Teng, Q. Liu, X. Jiang, F. Jiao, J. Yu, X. Chen, Novel high-gluten flour physically cross-linked graphene oxide composites: Hydrothermal fabrication and adsorption properties for rare earth ions, Ecotoxicol. Environ. Saf., 166 (2018) 1–10.
  29. R.D. Martínez-Orozco, H.C. Rosu, S.-W. Lee, V. Rodríguez-González, Understanding the adsorptive and photoactivity properties of Ag-graphene oxide nanocomposites, J. Hazard. Mater., 263 (2013) 52–60.
  30. M. Anbia, S. Salehi, Synthesis of polyelectrolyte-modified ordered nanoporous carbon for removal of aromatic organic acids from purified terephthalic acid wastewater, Chem. Eng. Res. Des., 90 (2012) 975–983.
  31. A. Misra, P.K. Tyagi, M.K. Singh, D.S. Misra, FTIR studies of nitrogen doped carbon nanotubes, Diamond Relat. Mater., 15 (2006) 385–388.
  32. A.L.M. Reddy, A. Srivastava, S.R. Gowda, H. Gullapalli, M. Dubey, P.M. Ajayan, Synthesis of nitrogen-doped graphene films for lithium battery application, ACS Nano, 4 (2010) 6337–6342.
  33. X. Xu, X. Jiang, F. Jiao, X. Chen, J. Yu, Tunable assembly of porous three-dimensional graphene oxide-corn zein composites with strong mechanical properties for adsorption of rare earth elements, J. Taiwan Inst. Chem. Eng., 85 (2018) 106–114.
  34. J. Zou, L. Huang, X. Jiang, F. Jiao, J. Yu, Electrochemical behaviors and determination of rifampicin on graphene nanoplatelets modified glassy carbon electrode in sulfuric acid solution, Desal. Wat. Treat., 120 (2018) 272–281.
  35. B. Yue, L. Yu, F. Jiao, X. Jiang, J. Yu, The fabrication of pentaerythritol pillared graphene oxide composite and its adsorption performance towards metal ions from aqueous solutions, Desal. Wat. Treat., 102 (2018) 124–133.
  36. H.-P. Cong, X.-C. Ren, P. Wang, S.-H. Yu, Macroscopic multifunctional graphene-based hydrogels and aerogels by a metal ion induced self-assembly process, ACS Nano, 6 (2012) 2693–2703.
  37. M. Bhaumik, A. Maity, V.V. Srinivasu, M.S. Onyango, Enhanced removal of Cr(VI) from aqueous solution using polypyrrole/Fe3O4 magnetic nanocomposite, J. Hazard. Mater., 190 (2011) 381–390.
  38. J. Hu, G. Chen, I.M.C. Lo, Removal and recovery of Cr(VI) from wastewater by maghemite nanoparticles, Water Res., 39 (2005) 4528–4536.
  39. A. Shahbazi, H. Younesi, A. Badiei, Functionalized SBA-15 mesoporous silica by melamine-based dendrimer amines for adsorptive characteristics of Pb(II), Cu(II) and Cd(II) heavy metal ions in batch and fixed bed column, Chem. Eng. J., 168 (2011) 505–518.
  40. G. Zeng, Y. Pang, Z. Zeng, L. Tang, Y. Zhang, Y. Liu, J. Zhang, X. Lei, Z. Li, Y. Xiong, G. Xie, Removal and recovery of Zn2+ and Pb2+ by imine-functionalized magnetic nanoparticles with tunable selectivity, Langmuir, 28 (2012) 468–473.
  41. L. Wang, J. Zhang, R. Zhao, C. Li, Y. Li, C. Zhang, Adsorption of basic dyes on activated carbon prepared from polygonum orientale linn: equilibrium, kinetic and thermodynamic studies, Desalination, 254 (2010) 68–74.
  42. S. Chen, Q. Yue, B. Gao, X. Xu, Equilibrium and kinetic adsorption study of the adsorptive removal of Cr(VI) using modified wheat residue, J. Colloid Interface Sci., 349 (2010) 256–264.
  43. S. Deng, R. Bai, Adsorption and desorption of humic acid on aminated polyacrylonitrile fibers, J. Colloid Interface Sci., 280 (2004) 36–43.
  44. Y. Zhang, H.-L. Ma, J. Peng, M. Zhai, Z.-Z. Yu, Cr(VI) removal from aqueous solution using chemically reduced and functionalized graphene oxide, J. Mater. Sci., 48 (2013) 1883–1889.
  45. Y. Wu, H. Luo, H. Wang, C. Wang, J. Zhang, Z. Zhang, Adsorption of hexavalent chromium from aqueous solutions by graphene modified with cetyltrimethylammonium bromide, J. Colloid Interface Sci., 394 (2013) 183–191.
  46. X. Yuan, Y. Wang, J. Wang, C. Zhou, Q. Tang, X. Rao, Calcined graphene/MgAl-layered double hydroxides for enhanced Cr(VI) removal, Chem. Eng. J., 221 (2013) 204–213.
  47. P. Bhunia, G. Kim, C. Baik, H. Lee, A strategically designed porous iron-iron oxide matrix on graphene for heavy metal adsorption, Chem. Commu., 48 (2012) 9888–9890.
  48. M.S. Samuel, S.S. Shah, V. Subramaniyan, T. Qureshi, J. Bhattacharya, N.D. Pradeep Singh, Preparation of graphene oxide/chitosan/ferrite nanocomposite for chromium(VI) removal from aqueous solution, Int. J. Biol. Macromol, 119 (2018) 540–547.
  49. Q. Liang, H. Luo, J. Geng, J. Chen, Facile one-pot preparation of nitrogen-doped ultra-light graphene oxide aerogel and its prominent adsorption performance of Cr(VI), Chem. Eng. J., 338 (2018) 62–71.
  50. D. Zhao, X. Gao, C. Wu, R. Xie, S. Feng, C. Chen, Facile preparation of amino functionalized graphene oxide decorated with Fe3O4 nanoparticles for the adsorption of Cr(VI), Appl. Surf. Sci., 384 (2016) 1–9.