Preparation of magnetic nanocomposite based on polyaniline/Fe3O4 towards removal of lead (II) ions from real samples

Sadeghi, Mohammad Mehdi; Rad, Ali Shokuhi; Ardjmand, Mehdi; Mirabi, Ali

doi:10.1016/j.synthmet.2018.08.001

Cited by 52 publications

(12 citation statements)

References 44 publications

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“…S3). After the five adsorption–desorption cycles, although the adsorption capacity of DAS2‐AT lost 30%, it kept a relatively higher adsorption capacity (120 mg g −1 ) toward Pb(II) ions compared to the previous reports 49,51,53,55,56 . The decrease of the adsorption capacity might be due to the special structure of DAS2‐AT possessing a strong coordination ability to Pb(II) ions.…”

Section: Resultsmentioning

confidence: 80%

Efficient removal of Pb(II) ions from aqueous solution by using a novel functionalized bio‐material with two tridentate coordinated units

Wang

et al. 2021

J of Chemical Tech & Biotech

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BACKGROUND Pb(II)‐containing wastewater causes serious pollution in our daily life. Adsorption is the technique most often used to remove heavy metals from aqueous solution. For improving the removal efficiency of Pb(II) ions from aqueous solution, adsorbent materials and the functionalization method of the adsorbent need to be further studied. RESULTS A novel Schiff's base functionalized bio‐material (DAS2‐AT) with two tridentate coordinated units was synthesized by the reaction of 2‐acetylthiophene and modified dialdehyde starch (DAS‐NH2) for the adsorption of Pb(II) ions from aqueous solution. Experimental results demonstrated that the DAS2‐AT exhibited high adsorption capacity and selectivity towards Pb(II), and the maximum adsorption capacity was up to 203 mg g−1. The adsorption isotherms and kinetic of Pb(II) ions on the DAS2‐AT were correlated well with the Langmuir isotherm model and Pseudo‐second‐order model. Moreover, thermodynamic analysis indicated that the adsorption process is spontaneous and endothermic. Desorption and regeneration experiments indicated that DAS2‐AT has good reusability. Besides that, the adsorbent displayed good affinity of DAS2‐AT towards Pb(II) ion in the presence of Cr(VI), Zn(II), and Ni(II) ions. CONCLUSION The bio‐adsorbent (DAS2‐AT) displayed good adsorption performance to remove Pb(II) ions from aqueous solution. DAS2‐AT gave a potential application as a low‐cost and effective adsorbent. © 2021 Society of Chemical Industry

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Section: Resultsmentioning

confidence: 80%

Efficient removal of Pb(II) ions from aqueous solution by using a novel functionalized bio‐material with two tridentate coordinated units

Wang

et al. 2021

J of Chemical Tech & Biotech

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“…It should be noted from Table 2 that the surface properties of the AC decreased dramatically after the incorporation of PABA. This could be due to the increase in the diameter of the PABA/AC which results in a decreased in surface area (Sadeghi et al 2018). In addition, the lower amount of AC doped could also be the cause for surface properties decrease.…”

Section: Brunauer-emmet-tellermentioning

confidence: 99%

Development of dispersive solid-phase microextraction coupled with high-pressure liquid chromatography for the preconcentration and determination of the selected neonicotinoid insecticides

et al. 2022

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Neonicotinoid insecticides have raised a lot of societal concerns due to their environmental ubiquity and unique mode of action. Therefore, it is of great research interest to monitor their occurrence in the environmental waters. However, these compounds exist at low concentrations that is below instrument detection limits. This study reports the applicability of magnetic poly (3 aminobenzoic acid)-based activated carbon (Fe3O4@PABA/AC) composite as an adsorbent in dispersive magnetic solid-phase microextraction (d-MSPME) of neonicotinoid insecticides from wastewater and river water samples. The as-synthesized adsorbent was characterized and confirmed by Fourier transform infrared spectroscopy, scanning electron microscopy, transmission electron microscopy, Brunauer–Emmett–Teller and X-ray diffraction spectroscopy. The analytes of interest were detected and quantified by high-performance liquid chromatography coupled with diode array detector (HPLC–DAD). The parameters affecting the extraction and preconcentration processes, such as pH, extraction time, mass of adsorbent, desorption time and eluent volume, were optimized using fractional factorial design and central composite design. Under optimum conditions, the limits of detection and quantification were in the ranges of 0.41–0.82 µg L−1 and 1.4–2.7 µg L−1, respectively. The linearity ranged from 1.4–700 µg L−1 with correlation of determination (R2) values varied between 0.9933 and 0.9987. The intra-day and inter-day precisions were 0.35–0.75% and 1.7–5.5%, respectively. The spike recovery experiments were conducted to evaluate the accuracy of the d-MSPME analytical method in real samples, and the percentage recoveries ranged from 86.7 to 99.2%. Therefore, this method shows great potential applicability in preconcentrating the pollutants from the environment.

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“…The NC was tested to remove Cr(VI) from a leather tanning wastewater sample, and exhibited a removal efficiency of 93.4% at pH 2. In another attempt, Sadeghi et al [60] synthesized a nanocomposite adsorbent based on magnetic Fe 3 O 4 NPs coated with polyaniline for the removal of Pb(II) ions. The adsorption results showed that the maximum adsorption capacity was 111.11 mg/g at pH 9, achieved in 60 min; however, an increase in the absorbent dosage was found to have a negative effect on the adsorption of Pb(II).…”

Section: Polyaniline/magnetic Nanoparticlesmentioning

confidence: 99%

Polyaniline/Nanomaterial Composites for the Removal of Heavy Metals by Adsorption: A Review

et al. 2021

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Heavy metals represent one of the most important kinds of pollutants, causing serious threats to the ecological balance. Thus, their removal from aqueous solution is a major environmental concern worldwide. The process of adsorption—being very simple, economical, and effective—is widely applied for the decontamination of wastewaters from heavy metals. In this process, the adsorbent is the key factor affecting the performance; for this reason, significant efforts have been made to develop highly efficient and selective adsorbents with outstanding properties. This paper presents a detailed overview of the research on different methods of synthesis of nanocomposite materials based on the polymer polyaniline combined with nanomaterials, along with the influence of the synthesis method on their size, morphology, and properties. In addition, the study evaluates the adsorption efficiency of various developed nanocomposites for the adsorption of heavy metals from aqueous solution. From an economical and environmental point of view, the regeneration studies of the nanocomposites are also reported.

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Preparation of magnetic nanocomposite based on polyaniline/Fe3O4 towards removal of lead (II) ions from real samples

Cited by 52 publications

References 44 publications

Efficient removal of Pb(II) ions from aqueous solution by using a novel functionalized bio‐material with two tridentate coordinated units

Efficient removal of Pb(II) ions from aqueous solution by using a novel functionalized bio‐material with two tridentate coordinated units

Development of dispersive solid-phase microextraction coupled with high-pressure liquid chromatography for the preconcentration and determination of the selected neonicotinoid insecticides

Polyaniline/Nanomaterial Composites for the Removal of Heavy Metals by Adsorption: A Review

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