Synthesis and adsorption ability of manganese ferrite/graphene oxide nanocomposites for arsenic(V) removal from water

Abstract

This work aims to synthesise manganese ferrite/graphene oxide (MnFe2O4/GO) matrrials with various MnFe2O4 contents from 20‐60 wt.% in material for arsenic(V) (As(V)) removal. The nanocomposites were studied by X‐ray diffraction, Fourier‐transform infrared spectroscopy, transmission electron microscopy, Brunauer‐Emmett‐Teller, and vibrating‐sample magnetometry. The suitable mass ratio of MnFe2O4 in nanocomposite for As(V) removal was 50 wt.% (MGO50). The adsorption process on MGO50 followed the pseudo‐second‐order kinetic and Langmuir isotherm models with the maximum adsorption amounts of 212.3 mg/g. Accordingly, MGO50 nanocomposite could be used as an effective adsorbent for removal of As(V) from water.

Shining Light on Environmental Remediation: A type-II heterojunction MnFe2O4/rGO Nanocomposites for Enhanced Photocatalytic Degradation of organic dyes and Bisphenol A

“…The pristine MF/GO-10 exhibited magnetic saturation values of 39.9 emu g -1 after the reaction. Despite a slight diminution in magnetism observed in the used catalyst, it still exhibited robust magnetic behaviour, with a saturation magnetization value of nearly 35.9 emu g -1 (Pathania et al, 2015;Thy et al, 2020) . This study reveals considerable ease of recycling MF/GO-10 due to its magnetic properties.…”

“…This inhibition efficiency was further observed to correlate with the concentration of graphene oxide within the composite, with higher graphene oxide concentrations exhibiting greater suppression of recombination(Thi Mong Thy et al, 2020;Thy et al, 2020). The enhanced charge separation observed in the MnFe2O4/rGO composite samples is attributed to the transfer of photogenerated electrons from the conduction band (e -CB) of MnFe2O4 to the graphene sheets.…”

Remediation of Lead Ions from Wastewater Using Magnetic Iron Oxide Nanoadsorbents – A Review

“…Free energy analysis reported multilayer adsorption of Pb(II) ions with maximum removal capacity of 105.5 mg/g at pH 5 [57]. L.T.M.Thy et al fabricated Fe3O4/GO nanocomposites for the lead ion removal [58].The oxygen-containing groups of graphene oxide (GO) namely hydroxyl, carboxyl, carbonyl, and epoxide groups have affinity for metal ions to form metal ion complex make the good adsorbent. In this study,missing of Fe3O4 diffraction peaks in the prepared nanoadsorbent indicates the well insertion of iron oxide NPs between GO sheets which results inhigherinterlayer distance between GO sheets.…”

Nickel ferrite nanoparticles‐doped graphene oxide as a heterogeneous Fenton catalyst: Synthesis, characterization, and catalytic application

“…However, too much H2O2 in the medium (from 1-2 mL) may probably cause the contradiction, particularly in sharply diminishing the MB photodegradation efficiency of the material. The excess H2O2 will react with hydroxyl radicals following Equations ( 5) to (7), thereby reducing the ability to oxidize MB molecules. Therefore, the amount of H2O2 suitable for this reaction is maintained at 0.5 mL.…”

“…Furthermore, the aggregation of GO sheets could significantly hinder the adsorption performance of GO. To enhance the adsorption performance as well as the recoverability of GO, magnetic metal oxides such as Fe 3 O 4 , [ 6 ] MnFe 2 O 4 , [ 7 ] NiFe 2 O 4 , [ 8 ] and CoFe 2 O 4 [ 9 ] have been anchored onto the surface of GO to prevent the aggregation of metal oxide nanoparticles and stacking of GO sheets as the GO sheet can act as a stabilizer for the formation of nanoparticles. [ 10 ] Meanwhile, the nanoparticles promote the exfoliation of GO sheets by increasing the interlayer spacing of GO.…”