Journal of Radiation Research and Radiation Processing, Volume. 42, Issue 6, 060204(2024)

Dual-responsive reduced graphene oxides prepared by radiation-initiated living radical grafting polymerization

Hanqin WENG1...2,3,*, Baoying ZHANG2, Xuan WANG1, Xin XIAO1, Shinichi YAMASHITA3, Mozhen WANG2 and Xuewu GE2 |Show fewer author(s)
Author Affiliations
  • 1Sino-French Institute of Nuclear Engineering and Technology,Sun Yat-sen University,Zhuhai 519082,China
  • 2Key Laboratory of Precision and Intelligent Chemistry,Department of Polymer Science and Engineering,University of Science and Technology of China,Hefei 230026,China
  • 3Nuclear Professional School,School of Engineering,The University of Tokyo,2-22 Shirakata-shirane,Tokai-mura,Naka-gun,Ibaraki 319-1188,Japan
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    Figures & Tables(11)
    Schematic illustration for the preparation of GO-TRITT (a),FTIR spectrum of GO (b),XPS spectra of GO,GO-NH2 and GO-TRITT (c) (the inset is the magnified XPS spectrum of GO-TRITT); high resolution spectrum of S 2p of GO-TRITT (d)
    Digital photos of the GO dispersion after radiation grafting polymerization of NIPAAm with the addition of Fe2+ (rGO-g-PNIPAAm-9) (a) and TRITT (rGO-g-PNIPAAm-5) (b) in the solution
    TEM images of GO (a),GO-NH2 (b),GO-TRITT (c),and rGO-g-PNIPAAm (d)
    Raman spectra (a) of rGO-g-PNIPAAm prepared with different absorbed doses and 1H NMR spectra (b) of TRITT,and homo-PNIPAAm in the grafting solution of rGO-g-PNIPAAm(color online)
    Transient absorption spectra of Ar-saturated aqueous solution containing NIPAAm (10 mmol/L) and TRITT (27.4 μmol/L) (a),as well as TRITT only (27.4 μmol/L) (b) after irradiation by pulsed electron beam; evolution of the absorbance at 380 nm and 410 nm of Fig.5(a) (c) (color online)
    Evolution of the absorbance at 720 nm of the Ar-saturated aqueous solution containing tert-butanol (0.5 mol/L) and different concentrations of NIPAAm (a); calculation of the reaction rate constant between NIPAAm and eaq- by linear fitting (b); structure of the reaction products between NIPAAm and eaq- (c); evolution of the absorbance at 472 nm of the N2O-saturated aqueous solution containing different concentrations of KSCN (0.1~0.5 mmol/L) and NIPAAm (d); calculation of the reaction rate constant between NIPAAm and OH by linear fitting (e); structures of the products between NIPAAm and OH (f)(color online)
    ζ potentials of rGO-g-PNIPAAm-5 at different pH ((a),25 ℃) and temperatures ((b),pH 4 and 6)
    Time-dependent temperature (a) and digital photos (b) of the solution containing different concentrations of rGO-g-PNIPAAm-5 under irradiation by 808-nm NIR LASER,and time-dependent temperature (c) of the solution containing rGO-g-PNIPAAm with different absorbed doses for radiation grafting polymerization under irradiation by 808 nm NIR LASER(color online)
    Evaluation of the reusability (a) and TEM image (b) of rGO-g-PNIPAAm-5 after irradiation by 808-nm NIR LASER
    • Table 1. Recipes of the preparation of different rGO-g-PNIPAAm

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      Table 1. Recipes of the preparation of different rGO-g-PNIPAAm

      样品

      Sample

      剂量率 / (Gy∙min-1)

      Dose rate

      吸收剂量 / kGy

      Absorbed dose

      NIPAAm

      / (mol∙L-1)

      TRITT

      / (mol∙L-1)

      FeSO4·7H2O / (mol∙L-1)
      rGO-g-PNIPAAm-1101.81.00.01
      rGO-g-PNIPAAm-2103.61.00.01
      rGO-g-PNIPAAm-3105.41.00.01
      rGO-g-PNIPAAm-4109.01.00.01
      rGO-g-PNIPAAm-51014.41.00.01
      rGO-g-PNIPAAm-61014.40.50.1
      rGO-g-PNIPAAm-71014.41.00.1
      rGO-g-PNIPAAm-81014.41.00.2
      rGO-g-PNIPAAm-91014.41.00.3
    • Table 2. Atomic ratios of different elements in various rGO-g-PNIPAAms

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      Table 2. Atomic ratios of different elements in various rGO-g-PNIPAAms

      样品

      Sample

      吸收剂量 / kGy

      Absorbed dose

      C

      / %

      S

      / %

      N

      / %

      O

      / %

      N/SC/N
      GO-TRITT66.780.554.8427.848.8013.80
      rGO-g-PNIPAAm-11.872.420.426.6720.4815.8810.86
      rGO-g-PNIPAAm-23.674.020.447.1118.4216.1610.41
      rGO-g-PNIPAAm-35.472.780.376.8120.0418.4110.69
      rGO-g-PNIPAAm-49.072.390.427.8119.3818.609.27
      rGO-g-PNIPAAm-514.470.530.427.8321.2218.649.01
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    Hanqin WENG, Baoying ZHANG, Xuan WANG, Xin XIAO, Shinichi YAMASHITA, Mozhen WANG, Xuewu GE. Dual-responsive reduced graphene oxides prepared by radiation-initiated living radical grafting polymerization[J]. Journal of Radiation Research and Radiation Processing, 2024, 42(6): 060204

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    Paper Information

    Category: RADIATION CHEMISTRY

    Received: Nov. 1, 2024

    Accepted: Nov. 28, 2024

    Published Online: Jan. 15, 2025

    The Author Email: WENG Hanqin (wenghq@mail.sysu.edu.cn)

    DOI:10.11889/j.1000-3436.2024-0101

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