Toxicity and remediation of pharmaceuticals and pesticides using metal oxides and carbon nanomaterials

Fallah, Zari; Zare, Ehsan Nazarzadeh; Ghomi, Matineh; Ahmadijokani, Farhad; Amini, Majed; Tajbakhsh, Mahmood; Arjmand, Mohammad; Sharma, Gaurav; Ali, Hamna; Ahmad, Awais; Makvandi, Pooyan; Lichtfouse, Éric; Sillanpää, Mika; Varma, Rajender S.

doi:10.1016/j.chemosphere.2021.130055

Cited by 102 publications

(28 citation statements)

References 283 publications

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“…Due to their special properties such as cost-effective fabrication procedure, good chemical stability, eco-friendliness, high theoretical specific capacity, and abundant availability, transition metal oxides (TMOs) including Fe 2 O 3 , Co 3 O 4 , NiO and CuO have at-tracted considerable attention for use in various applications, including solar cells, photocatalysts, electrode materials, and gas sensors [11][12][13][14][15][16][17]. However, TMOs have some drawbacks such as low conductivity, pulverization, and aggregation caused by large volume expansion [18][19][20].…”

Section: Introductionmentioning

confidence: 99%

RETRACTED: Synthesis, Characterization and Photodegradation Studies of Copper Oxide–Graphene Nanocomposites

et al. 2021

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In this work, a simple hydrothermal method was employed to prepare a pristine sample of copper oxide (CuO) and three samples of copper oxide–graphene nanocomposites (CuO-xG) with x = 2.5, 5, and 10 mg of graphene. The synthesized samples were characterized using X-ray powder diffractometry (XRD), field emission scanning electron microscopy (FESEM), energy-dispersive X-ray spectroscopy (EDX), Fourier-transform infrared spectroscopy (FTIR) and ultraviolet–visible (UV-Vis) spectroscopy. The XRD patterns of CuO-xG nanocomposites exhibited the diffraction peaks related to the crystal planes of monoclinic CuO and hexagonal graphite. The surface morphology of the prepared samples was investigated using FESEM images. EDX analysis was used to investigate the chemical composition of the synthesized samples. FTIR spectroscopy identified the vibrational modes of the covalent bonds present in the samples. The allowed direct optical bandgap energy was calculated for all prepared samples using UV-Vis absorption spectra. The small bandgap of CuO-xG nanocomposites indicates their potential use as an effective photocatalyst in the presence of visible light. Photocatalytic activity of the samples was explored for the degradation of methylene blue (MB) dye contaminant under visible light irradiation. The results showed that the CuO-5G sample has the highest photodegradation efficiency (~56%).

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Section: Introductionmentioning

confidence: 99%

RETRACTED: Synthesis, Characterization and Photodegradation Studies of Copper Oxide–Graphene Nanocomposites

et al. 2021

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“…Lead is generally produced from pesticides, mobile batteries, and petroleum-based materials. The allowable level for lead in drinking water is 0.05 mg/L 11 , 12 . Consequently, removing lead from contaminated water is essential.…”

Section: Introductionmentioning

confidence: 99%

Antimicrobial nanocomposite adsorbent based on poly(meta-phenylenediamine) for remediation of lead (II) from water medium

Kheyrabadi

Zare

2022

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In this study, poly(m-phenylenediamine)@ZnO (PmPDA@ZnO) nanocomposite was fabricated by in-situ chemical oxidative polymerization for the effective lead(II) removal from aqueous solutions. PmPDA@ZnO was characterized by several instrumental methods like FTIR, XRD, EDX, TGA, FESEM, TEM, zeta potential, and BET. The TEM images showed a core–shell-like structure for the PmPDA@ZnO nanocomposite. TGA results showed that the thermal stability of the PmPDA@ZnO nanocomposite was higher than the PmPDA. The maximum adsorption of lead (II) onto PmPDA@ZnO nanocomposite was obtained at pH 6, adsorbent dosage 60 mg, lead(II) ion concentration 90 mg/L, and agitation time 90 min. Langmuir and Freundlich's isotherm models were evaluated to simulate the lead(II) sorption via empirical data. Langmuir's model was in good agreement with empirical data with a maximum adsorption capacity (Qmax) of 77.51 mg/g. The kinetic data adsorption fitted best the pseudo-second-order model. The values of thermodynamic parameters of ΔS° and ΔH° were obtained 0.272 J/mol K, and 71.35 kJ/mol, respectively. The spontaneous and endothermic behavior of the adsorption process was confirmed by the negative and positive response of ΔG° and ΔH°, respectively. Moreover, the addition of coexisting cations e.g. cobalt (II), nickel (II), calcium (II), and copper (II) had no significant effect on the removal efficiency of lead(II). Adsorption–desorption studies showed that the PmPDA@ZnO nanocomposite can be remarkably regenerated and reused after three sequential runs without a significant decline in its adsorption performance. The antimicrobial activities of PmPDA@ZnO nanocomposite were evaluated against Escherichia coli and Staphylococcus aureus bacteria species. These results confirmed that the PmPDA@ZnO nanocomposite could be a good candidate for water decontamination.

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“…Further, the treatment of pharmaceutical wastewater using physical, chemical, and biological processes is nowadays in the development stage, and many combinations are used for it [1]. The restrictions of the advanced on the other side processes for oxidation include capital cost, advanced chemistry that helps in degradation to a particular compound, and bynature of by-product formed after treatment [17]. Advanced oxidation in recent decades processes was commonly employed to achieve a good efficacy in water and wastewater treatment [18].…”

Section: Introductionmentioning

confidence: 99%

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2021

Lett Appl NanoBioSci

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Toxicity and remediation of pharmaceuticals and pesticides using metal oxides and carbon nanomaterials

Cited by 102 publications

References 283 publications

RETRACTED: Synthesis, Characterization and Photodegradation Studies of Copper Oxide–Graphene Nanocomposites

RETRACTED: Synthesis, Characterization and Photodegradation Studies of Copper Oxide–Graphene Nanocomposites

Antimicrobial nanocomposite adsorbent based on poly(meta-phenylenediamine) for remediation of lead (II) from water medium

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