access icon free Surface-enhanced Raman spectroscopy for tellurium detection by AgNPs-loaded 3D porous graphene hydrogel

A three-dimensional (3D) graphene hydrogel covered by uniform silver nanoparticles as an effective substrate for surface-enhanced Raman scattering application was fabricated by facile ethylenediamine-induced self-assembly method. The anchor of silver nanoparticles endows the enhanced Raman spectroscopy with the sensitivity and multiplex requirements for the tellurium quick detection using the robust graphene-based monoliths. The porous structure offers essential channels and space for Te(IV) access. After exposure to Te(IV), the distinguished peak of Te-O at 584.9 cm−1, which was enhanced significantly and kept constant over a wide range of pH, was selected as the indicative of Te(IV) level. At the optimal pH, the concentration dependent surface-enhanced Raman spectroscopy shows that the detection limit was as low as 100 nM.

Inspec keywords: nanosensors; porosity; nanoparticles; hydrogels; nanofabrication; self-assembly; chemical sensors; silver; tellurium; pH; surface enhanced Raman scattering; graphene; porous materials

Other keywords: silver nanoparticle-loaded 3D porous graphene hydrogel; robust graphene-based monoliths; pH; porous structure; concentration dependent surface-enhanced Raman spectroscopy; Te; Ag-C; facile ethylenediamine-induced self-assembly method; tellurium detection

Subjects: Structure of graphene and graphene-related materials; Gels and sols; Microsensors and nanosensors; Structure of solid clusters, nanoparticles, nanotubes and nanostructured materials; Chemical sensors; Preparation of graphene and graphene-related materials, intercalation compounds, and diamond; Electrochemistry and electrophoresis; Chemical sensors; Optical properties of thin films, low-dimensional and nanoscale structures; Self-assembly in nanofabrication; Infrared and Raman spectra and scattering (condensed matter); Structure of powders and porous materials

References

    1. 1)
      • 15. Starik, I.E., Ampelogova, N.I., Kuznetsov, B.S.: ‘Hydrolysis of polonium in perchloric acid’, Radiokhimiya, 1964, 6, (1), pp. 519524.
    2. 2)
    3. 3)
    4. 4)
    5. 5)
    6. 6)
    7. 7)
    8. 8)
      • 18. Qiu, L., Liu, J.Z., Chang, S.L.Y., et al: ‘Biomimetic superelastic graphene-based cellular monoliths’, Nat. Commun., 2012, 3, (1241), pp. 17.
    9. 9)
    10. 10)
    11. 11)
    12. 12)
    13. 13)
    14. 14)
    15. 15)
    16. 16)
    17. 17)
    18. 18)
    19. 19)
      • 14. Ermolaev, N., Bugreev, M., Yefimov, E.: ‘Methods of removal and containment of radioactive polonium from lead-bismuth coolant’. Proc. Heavy Liquid Metal Coolants in Nuclear Technology (HLMC-98), Obninsk, Russia, 1998, pp. 194200.
    20. 20)
    21. 21)
      • 42. Cheng, K.L.: ‘Analysis of lead telluride with an accuracy to better than 0.1%’, Anal. Chem., 1995, 33, (6), pp. 761764.
    22. 22)
    23. 23)
    24. 24)
    25. 25)
    26. 26)
    27. 27)
      • 43. McPhail, D.C.: ‘Thermodynamic properties of aqueous tellurium species between 25 and 350°C’, Geochim. Cosmochim. Ac., 1995, 59, (5), pp. 851866.
    28. 28)
    29. 29)
    30. 30)
    31. 31)
    32. 32)
    33. 33)
    34. 34)
    35. 35)
    36. 36)
    37. 37)
    38. 38)
    39. 39)
    40. 40)
    41. 41)
    42. 42)
    43. 43)
    44. 44)
      • 12. Jiao, T.F., Guo, H.Y., Zhang, Q.R., et al: ‘Reduced graphene oxide-based silver nanoparticle-containing composite hydrogel as highly efficient dye catalysts for wastewater treatment’, Sci. Rep., 2015, 5, (11873), pp. 112.
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