<i>Retracted:</i> Adsorption of Pb(<scp>II</scp>) and Cd(<scp>II</scp>) by magnetic chitosan‐salicylaldehyde Schiff base: Synthesis, characterization, thermal study and antibacterial activity

Hachem, Kadda; Jasim, Saade Abdalkareem; Al‐Gazally, Moaed E.; Riadi, Yassine; Yasin, Ghulam; Jalil, Abduladheem Turki; Abdulkadhm, Mohammed Mustafa; Saleh, Marwan Mahmood; Fenjan, Mohammed N.; Mustafa, Yasser Fakri; Khalaji, Aliakbar Dehno

doi:10.1002/jccs.202100507

Cited by 45 publications

(19 citation statements)

References 47 publications

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“…The adsorption/desorption isotherms of Co-MOF nanostructures fabricated via the microwave-assisted reverse micelle method are shown in Figure 2C. Based on this isotherm, the adsorption/desorption behavioral feature of the sample is similar to the fourth type of classical isotherms, which provides a high specific surface area for final products (Mirhosseini et al, 2021;Hachem et al, 2022;Sadeghi et al, 2022). Because the specific surface area is an effective parameter that affects the applications of the sample, this isotherm confirms the desired textural properties for the Co-MOF nanostructures.…”

Section: Synthesis and Characterization Of Cobalt-metal Organic Frame...mentioning

confidence: 83%

RETRACTED: Synthesis of efficient cobalt–metal organic framework as reusable nanocatalyst in the synthesis of new 1,4-dihydropyridine derivatives with antioxidant activity

et al. 2022

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Efficient cobalt–metal organic framework (Co-MOF) was prepared via a controllable microwave-assisted reverse micelle synthesis route. The products were characterized by SEM image, N2 adsorption/desorption isotherm, FTIR spectrum, and TG analysis. Results showed that the products have small particle size distribution, homogenous morphology, significant surface area, and high thermal stability. The physicochemical properties of the final products were remarkable compared with other MOF samples. The newly synthesized nanostructures were used as recyclable catalysts in the synthesis of 1,4-dihydropyridine derivatives. After the confirmation of related structures, the antioxidant activity of derivatives based on the DPPH method was evaluated and the relationship between structures and antioxidant activity was observed. In addition to recyclability, the catalytic activity of Co-MOF studied in this research has remarkable effects on the synthesis of 1,4 dihydropyridine derivatives.

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Section: Synthesis and Characterization Of Cobalt-metal Organic Frame...mentioning

confidence: 83%

RETRACTED: Synthesis of efficient cobalt–metal organic framework as reusable nanocatalyst in the synthesis of new 1,4-dihydropyridine derivatives with antioxidant activity

et al. 2022

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“…With further increasing time, the availability of active sites reduces and the driving force reduces, which makes it a long time to reach equilibrium. [ 42 ] However, after 75 min of adsorption, the removal rate reached saturation because of the agglomeration of adsorbate on the surface. As a result, for further batch adsorption experiments using RGO, 75 min is the optimal adsorption time.…”

Section: Resultsmentioning

confidence: 99%

Batch and continuous studies on adsorptive removal of hexavalent chromium [Cr(VI)] using reduced graphene oxide

Rout

Jena

2022

J Chinese Chemical Soc

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In this study, the reduced form of graphene oxide (RGO) has been synthesized by using hydrazine hydrate as a reducing agent and used for Cr(VI) removal. The physicochemical properties of the as‐synthesized material were studied by FESEM, XRD, RAMAN, and FTIR. The optimized adsorption parameters were time of 75 min, solution pH 3.0, temperature 35°C, and dosage of 0.3 g/l. The isotherms were perfectly simulated by the Langmuir model, and the kinetic data followed the pseudo‐second‐order model. The maximum uptake capacity was 787.401 mg/g at 35°C. Thermodynamic analysis indicated an endothermic and spontaneous process occurs. Competition from interfering ions (SO42−, NO3−, Cl−, HCO3−, Co2+, and Cu2+) proved insignificant. After five cycles of regeneration, the removal remains at 85.75%. From the column study, it was observed that the parameters like breakthrough time (tb), bed capacity (qbed), and exhaustion time (te) increase with an increase in bed height and decrease with an increase in Cr(VI) flow rate. Adsorption performance for industrial effluents shows up to 55.32% removal. The above superior adsorption performance validated the application of the RGO as an efficient adsorbent for the remediation of Cr(VI) ions from wastewater.

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“…Nanotechnology is an interdisciplinary knowledge of various disciplines [ 3 , 4 ], including physics [ 5 , 6 ], materials [ 7 , 8 , 9 ], engineering [ 10 , 11 , 12 ], mechanical engineering [ 13 , 14 , 15 , 16 ], agriculture [ 17 ], energy [ 18 , 19 , 20 ] and biology [ 21 , 22 , 23 , 24 , 25 ]. Recently, nanoparticles have been successfully used for sustained drug release [ 26 ], photo‐catalytic [ 27 , 28 , 29 ], degradation [ 30 , 31 , 32 , 33 , 34 ], detection [ 35 , 36 , 37 , 38 , 39 ], treatment of infections [ 40 ], and in the food industry as potent anti‐oxidant [ 41 , 42 ], larvicidal [ 43 ], antifungal [ 44 ] and antibacterial agents [ 45 , 46 ]. Various methods for producing nanoparticles are classified into three general methods: physical, chemical, and biological [ 47 , 48 ].…”

Section: Introductionmentioning

confidence: 99%

Biosynthesis of silver nanoparticles using Lawsonia inermis and their biomedical application

Alhomaidi

Jasim

Amin

et al. 2022

IET Nanobiotechnology

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Developing biosynthesis of silver nanoparticles (Ag-NPs) using plant extract is an environmentally friendly method to reduce the use of harmful chemical substances. The green synthesis of Ag-NPs by Lawsonia inermis extract and its cellular toxicity and the antimicrobial effect was studied. The physical and chemical properties of synthesised Ag-NPs were investigated using UV-visible spectroscopy, infrared spectroscopy, X-ray diffraction (XRD), scanning, and transmission electron microscopy. The average size of Ag-NPs was 40 nm. The XRD result shows peaks at 2θ = 38.07°, 44.26°, 64.43°, and 77.35°are related to the FCC structure of Ag-NPs. Cytotoxicity of synthesised nanoparticles was evaluated by MTT toxicity test on breast cancer MCF7 cell line. Observations showed that the effect of cytotoxicity of nanoparticles on the studied cell line depended on concentration and time. The obtained IC 50 was considered for cells at a dose of 250 μg/ml. Growth and survival rates decreased exponentially with the dose. Antimicrobial properties of Ag-NPs synthesised with extract were investigated against Escherichia coli, Salmonella typhimurium, Bacillus cereus, and Staphylococcus aureus to calculate the minimum inhibitory concentration and the minimum bactericidal concentration of (MBC). The results showed that the synthesised Ag-NPs and the plant extract have antimicrobial properties. The lowest concentration of Ag-NPs that can inhibit the growth of bacterial strains was 25 μg/ml.

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Retracted: Adsorption of Pb(II) and Cd(II) by magnetic chitosan‐salicylaldehyde Schiff base: Synthesis, characterization, thermal study and antibacterial activity

Cited by 45 publications

References 47 publications

RETRACTED: Synthesis of efficient cobalt–metal organic framework as reusable nanocatalyst in the synthesis of new 1,4-dihydropyridine derivatives with antioxidant activity

RETRACTED: Synthesis of efficient cobalt–metal organic framework as reusable nanocatalyst in the synthesis of new 1,4-dihydropyridine derivatives with antioxidant activity

Batch and continuous studies on adsorptive removal of hexavalent chromium [Cr(VI)] using reduced graphene oxide

Biosynthesis of silver nanoparticles using Lawsonia inermis and their biomedical application

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