Hydrothermal synthesis of spindle structure copper ferrite-graphene oxide nanocomposites for enhanced photocatalytic dye degradation and in-vitro antibacterial activity

Harinee, Subramanian; Henciya, Santhaseelan; Vengateshwaran, Thasu Dinakaran; Devendiran, Velmurugan; Rathinam, Arthur James; Ashok, Mahalingam; Ramachandran, Sathish Kumar; Senthilkumar, N.; Muthukumar, Kaliappan; Mathimani, Thangavel

doi:10.1016/j.envres.2023.116095

Cited by 9 publications

(1 citation statement)

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“…A multi-peak Gaussian fit of MnFe 2 O 4 /rGO before the adsorption of organic arsenic was performed to deconvolve the O 1s (Figure 7c) spectrum into three peaks centered at 528.9 eV, 530.1 eV, and 534.5 eV. The main contributions are the lattice oxygen in MnFe 2 O 4 [40], the surface metal hydroxyl group (M-OH) from the oxygen-containing functional group of rGO [41], and the surface adsorbed water molecules. Significantly, the MnFe 2 O 4 /rGO surface had a high percentage of M-OH (37.01%), which is considered to be an important component for the removal of contaminants [42].…”

Section: Effect Of Hamentioning

confidence: 99%

Adsorption Behavior of Organoarsenicals over MnFe2O4-Graphene Hybrid Nanocomposite: The Role of Organoarsenic Chemical Structures

Gu,

Zhang,

et al. 2023

Materials

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As a kind of emerging contaminant, organoarsenic compounds have drawn wide concern because of their considerable solubilities in water, and the highly toxic inorganic arsenic species formed during their biotic and abiotic degradation in the natural environment. Thus, the effective removal and studying of the adsorption mechanism of organoarsenic compounds are of significant urgency. In this work, MnFe2O4 and MnFe2O4/graphene were prepared through a facile solvothermal method. From the results of the Transmission Electron Microscope (TEM) characterization, it can be found that MnFe2O4 nanoparticles were uniformly distributed on the surface of the graphene. And the specific surface area of the MnFe2O4/graphene was about 146.39 m2 g−1, much higher than that of the MnFe2O4 (86.15 m2 g−1). The interactions between organoarsenic compounds and adsorbents were conducted to study their adsorption behavior and mechanism. The maximum adsorption capacities of MnFe2O4/graphene towards p-arsanilic acid (p-ASA) and roxarsone (ROX) were calculated to be 22.75 and 30.59 mg g−1. Additionally, the ionic strength, negative ions, and humus were introduced to investigate the adsorption performance of organoarsenic compounds. Electrostatic adsorption and surface complexation are the primary adsorption mechanisms on account of X-ray photoelectron spectroscopy (XPS) and the Fourier-transform infrared spectroscopy (FT-IR) analysis. This research extends the knowledge into studying the interaction between organoarsenic species and hybrid nanomaterials in the natural environment.

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Section: Effect Of Hamentioning

confidence: 99%