Graphene oxide nano-layers functionalized/reduced by L-Citrulline/Pectin bio-molecules for epoxy nanocomposite coating mechanical properties reinforcement

Shahmoradi, Ali; Bejandi, Mohsen Saket; Rasanani, Elmira Hadian; Javidparvar, Ali Asghar; Ramezanzadeh, Bahram

doi:10.1016/j.porgcoat.2023.107493

Cited by 5 publications

(1 citation statement)

References 85 publications

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“…The absorption peaks appeared at about 2951 cm -1 and 2896 cm -1 are assigned to the asymmetric and symmetric υ(C-H) in the methylene group, respectively [57,58]. The peaks centered at 1459 cm -1 , 1362 cm -1 , 1166 cm -1 , and 860 cm -1 are related to bending, scissoring, wagging, and rocking vibration modes of C-H in methylene group, respectively [38,59,60]. The appeared peaks at 1728 cm -1 , 703 cm -1 , and 467 cm -1 are corresponded to υ(C=O) [61], υ(C-S) [5], and υ(S-S) [38], respectively.…”

Section: 1characterization Testsmentioning

confidence: 99%

Hg2+ determination by DPASV by using poly (methylene disulfide)/Au nanoparticle/MWCNT modified glassy carbon electrode by differential pulse anodic stripping voltammetry (DPASV) technique

Ghalebi,

Parham,

Shirmardi

2023

J Porous Mater

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In the present work, surface of a glassy carbon electrode (GCE) was modified by a poly (methanedisulphide)/Au-nanoparticles/multiwall carbon nanotubes (PMDS/AuNPs/MWCNT) to improve its ability for the determination of trace mercury cations in polluted water. The produced electrode was characterized with FESEM, HR-TEM, AFM, XRD, and FT-IR techniques. The obtained results proved the successfulness of the modification process and revealed that the process had a significant effect on the morphology of the electrode and its surface roughness. EIS studies demonstrated the improvement of the electrochemical properties of the surface modified sample. Accordingly, the electrical resistance to charge transfer (Rct) of the GCE-based samples decreased from 477.1 Ohm.cm 2 for the bare sample to 83.4 Ohm.cm 2 for the modified-GCE sample. The modified-GCE sample was employed as an ultra-sensitive electrode for determining the concentration of Hg 2+ cation based on DPASV technique. It exhibited linear behaviour for the concentration determination in the range of 5.98×10 -12 M to 1.00×10 -9 M with correlation coefficient of 0.996. Limit of detection (LOD) and limit of quantitation (LOQ) of the method were found 2.73×10 -13 M and 9.19×10 -13 M, respectively.

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