Synthesis and characterization of hybrid materials based on graphene oxide and silica nanoparticles and their effect on the corrosion protection properties of epoxy resin coatings

One of the problems that most affect humanity today is the wastewater discharge into different water bodies. It was estimated that more than 7 million tons of wastewater are generated worldwide and are discharged into rivers, lakes, and reservoirs. Among the most dangerous wastewaters are those from inorganic chemistry research laboratories, mainly due to heavy metals. These problems have become a highly relevant topic, and numerous researchers have tried to design wastewater treatment systems that will deal more efficiently with heavy metals elimination. In this work, the synthesis, characterization, and evaluation of hydrated aluminium silicate were performed as alternative wastewater treatment from chemistry research and teaching laboratories. The compound obtained was Al 2 O 3 3SiO 2 H 2 O , which was characterized by the determination of its physicochemical properties. These revealed a low density, very porous material, with low crystallinity, strong chemical resistance, a large surface area, and a high apparent ionic exchange capacity. Absorption kinetics studies of heavy metals in aqueous solutions, through more widespread models, have demonstrated that Al 2 O 3 3SiO 2 H 2 O has excellent properties as absorbents of this material. The amorphous hydrated aluminium silicate achieves a decrease in the concentration of all the metal ions studied, reducing them to discharge levels permissible. The discharge of large wastewater volumes into the environment is currently one of the major environmental pollution concerns 1-4. Among the more common and harmful pollutants are heavy metals, which produce a vast amount of emissions worldwide (just considering the industrial facilities of the European Union member countries, 3,598 tons of heavy metals were discharged into the water in 1 year) 5,6. Discharges of wastewater from various industrial activities such as electroplating, paint production, plastics, metal materials, mining, some energy producers, and welding materials are the main sources of discharges of heavy metals content into the environment 7-10. Thus the great importance of identifying, evaluating and knowing more about the effects of the species present in these residues in order to avoid present and future damage through responsible, safe, efficient, legal and low-cost wastewater management 11-14. The toxicity of metals depends on the chemical species in which it is part, the routes of administration, and the optimal concentration levels above which they are toxic 15,16. Usually, results when an organism is subjected to an excessive concentration of the metal for an extended period, when it appears in a specific biochemical form or when the organism absorbs it by an unusual route 17,18. Since both the deficiency and the elevated levels of many metallic species can lead to adverse effects for health and the environment; Various studies have been documented on the need for them to be discharged at adequate levels. From this problem on the protection of the environment and human health; Considerable attent...

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“…The infrared analysis is another characterization methods that are commonly used in synthesized compounds 68,69 .…”

Section: Methodsmentioning

confidence: 99%

“…In this study, we followed the standard procedure reported in the literature 68,69 , using a Phillips FTIR model PV-9512 spectrophotometer and KBr tablets.…”

Section: Methodsmentioning

confidence: 99%

Kinetic study of removal heavy metal from aqueous solution using the synthetic aluminum silicate

Treto‐Suárez

Prieto-García

Mollineda-Trujillo

et al. 2020

Sci Rep

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“…In the FTIR spectrum of GO, peaks at 1722 and 1618 cm −1 indicate the presence of C═O and C═C functional groups, respectively. Compared with the FTIR spectra of GO-HGMS, the C-O-C absorption peak at 1226 cm −1 disappears, and new absorption peaks appear at 1409, 1069, and 798 cm −1 , which are attributed to C-N, Si-O-C, and N-H absorption, respectively [ 29 ]. In conclusion, in the reaction, the intermediate structure of ─NH 2 obtained by HGMS and KH550 reacted with the ─COOH of the reactant GO to produce a new compound, namely, GO-HGMS.…”

Section: Resultsmentioning

confidence: 99%

“…Their results show that the GO-FAC hybrid filler has a significant effect on improving the tensile and wear resistance of epoxy resin composites; when the content is 0.5 wt%, both properties are optimal. Ramezanzadeh et al [ 28 ], Bouibed et al [ 29 ], and Pourhashem et al [ 30 ] prepared GO-SiO 2 hybrids and filled them into epoxy coating; they reported that the introduction of GO-SiO 2 hybrids into the epoxy coating enhances the corrosion resistance and thermal stability.…”

Section: Introductionmentioning

confidence: 99%

Preparation and properties of rigid polyurethane foams added with graphene oxide-hollow glass microspheres hybrid

Liu

Zou

Chang

et al. 2021

Designed Monomers and Polymers

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Rigid polyurethane foam (RPUF) as a filling material that can enhance the crashworthiness of thinwalled tubes. GO-HGMS hybrid was prepared by solution blending of graphene oxide (GO) and hollow glass microspheres (HGMS). The effect of the composite on the compression properties of RPUF was investigated. The GO-HGMS hybrid was characterized by fourier transform infrared spectroscopy (FTIR), x-ray diffraction(XRD), and scanning electron microscopy (SEM). The compression test and microstructure results show that the best compression performance and the largest apparent density of the composite foam were obtained when the hybrid content was 4 wt %. In addition, the compression test results of empty tubes (ET) and foam-filled tubes (FFT) under lateral load indicate that the combination of lightweight foamed material and thin-walled tube improves the stability of thin-walled tube deformation and the ability of the structure to resist deformation. GO-HGMS/RPUF as the filling material of thin-walled tube structure greatly improves the bearing capacity and energy absorption level of ET.

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“…[ 27 ] TiO 2 particles as fillers could improve the mechanical performance, corrosion resistance, and tribological properties of pristine epoxy matrix. [ 28 ] However, the dispersion quality of nanofillers in polymer matrix was a key issue in controlling the properties of nanocomposites. Various approaches were attempted to improve the dispersion states and prevent the agglomerations of nanofillers in the epoxy.…”

Section: Introductionmentioning

confidence: 99%

Reciprocating friction and wear performances of nanometer sized‐TiO₂ filled epoxy composites

Tian

Xian

2021

Polymer Composites

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Nanometer-sized particles, for example, TiO 2 , have gradually gained the attention to improve the mechanical and tribological properties of epoxy composite coatings. In the present paper, TiO 2 with the size of 300 nm was applied to improve the reciprocating friction and wear performances of an epoxy composite. The effects of TiO 2 content and sample preparation methods on the mechanical and tribological performances were investigated experimentally. It was found that the optimal mixture ratio of TiO 2 was 4 wt%, and the tensile strength of composite increased by up to 30% compared with the control sample. The TiO 2 nanoparticles were treated with polyvinylpyrrolidone (PVP) and then mixed into epoxy resin with three-roll mill grinding technique. The PVP molecules could surround a single TiO 2 to form super-monomer, which produced repulsive force to aim to disperse nanoparticles, and the three-roll mill grinding could utilize the compression of axis surfaces and friction at different speeds to reduce the size of agglomerations of more than 5 microns. The results showed that the PVP molecules treatment could improve tensile strength and modulus, and three-roll mill grinding technique could enhance the elongation at break. In addition, the reciprocating wear rate and frictional coefficient of the epoxy composite plates also were reduced remarkably owing to the pretreatment of TiO 2 particles, for example, and the frictional coefficient of epoxy composite decreased from 0.09 to 0.04 for the optimal ratio of TiO 2 , and special wear rate also decreased by 87.5% compared with the control sample. This was because the TiO 2 nanoparticles acted as the stress transfer medium and could undertake part of loading to relieve stress directly into the epoxy matrix. There was a thin transfer film in which the particles acted as a membrane skeleton to avoid matrix further being torn. Because of the hardness and nanoeffect of particles, TiO 2 could fill the defects in the wear interface to form a protective film and improve surface fatigue resistance property. The more uniform dispersion of TiO 2 particles brought about the obvious improvement of wear resistance of composites.

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Synthesis and characterization of hybrid materials based on graphene oxide and silica nanoparticles and their effect on the corrosion protection properties of epoxy resin coatings

Abstract: To cite this article: Aghiles Bouibed & Rachida Doufnoune (2019) Synthesis and characterization of hybrid materials based on graphene oxide and silica nanoparticles and their effect on the corrosion protection properties of epoxy resin coatings,

Cited by 57 publications

References 67 publications

Kinetic study of removal heavy metal from aqueous solution using the synthetic aluminum silicate

Kinetic study of removal heavy metal from aqueous solution using the synthetic aluminum silicate

Preparation and properties of rigid polyurethane foams added with graphene oxide-hollow glass microspheres hybrid

Reciprocating friction and wear performances of nanometer sized‐TiO₂ filled epoxy composites

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Synthesis and characterization of hybrid materials based on graphene oxide and silica nanoparticles and their effect on the corrosion protection properties of epoxy resin coatings

Abstract: To cite this article: Aghiles Bouibed & Rachida Doufnoune (2019) Synthesis and characterization of hybrid materials based on graphene oxide and silica nanoparticles and their effect on the corrosion protection properties of epoxy resin coatings,

Cited by 57 publications

References 67 publications

Kinetic study of removal heavy metal from aqueous solution using the synthetic aluminum silicate

Kinetic study of removal heavy metal from aqueous solution using the synthetic aluminum silicate

Preparation and properties of rigid polyurethane foams added with graphene oxide-hollow glass microspheres hybrid

Reciprocating friction and wear performances of nanometer sized‐TiO2 filled epoxy composites

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Reciprocating friction and wear performances of nanometer sized‐TiO₂ filled epoxy composites