Green and simple synthesis of poly (catechol-tetraethylenepentamine)@aminopropyl-modified silica composite for removing toxic Cr(VI)

Zhang, Qiuyue; Dong, Kaijie; Liu, Qiang; Liu, Qinze; Yao, Jinshui

doi:10.1016/j.jtice.2020.03.002

Cited by 20 publications

(3 citation statements)

References 45 publications

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“…The comparison of the performance of various materials shows that the amino modified mesoporous silica prepared by co-condensation in the present study is superior in Cr(VI) removal to the most of the materials listed in the cited sources, with the exception of some organic polymer conjugated silica nanoparticles, such as poly(catechol-tetraethylenepentamine)@SiO 2 -NH 2 [ 66 ], polyethylenimine-silica nanocomposite [ 69 ], or polypyrrole-silica [ 70 ]. Our study shows that the simple method of co-condensation of functionalized silica precursors in the presence of pore forming surfactant molecules leads to cheap and competitive materials suitable for metal ion removal from waste waters.…”

Section: Resultsmentioning

confidence: 99%

Comparison of Structure and Adsorption Properties of Mesoporous Silica Functionalized with Aminopropyl Groups by the Co-Condensation and the Post Grafting Methods

et al. 2021

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The adsorptive potential has been evaluated for the aminopropyl functionalized mesoporous silica materials obtained by co-condensation and post grafting methods. Nitrogen sorption, small angle neutron and X-ray scattering (SANS and SAXS) demonstrated high surface area and well-ordered hexagonal pore structure suitable for applications as adsorbents of metals from waste waters. A comparison of Cr(VI) adsorption properties of the materials prepared by different functionalization methods has been performed. The obtained results demonstrated the adsorption capacity due to the affinity of the chromium ions to the amino groups, and showed that co-condensation of tetraethoxysilane (TEOS) and 3-aminopropyl triethoxysilane (APTES) resulted in higher metal sorption capacity of the materials compared to post-synthesis grafting of aminopropyl groups onto the mesoporous silica particles.

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Section: Resultsmentioning

confidence: 99%

Comparison of Structure and Adsorption Properties of Mesoporous Silica Functionalized with Aminopropyl Groups by the Co-Condensation and the Post Grafting Methods

et al. 2021

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“…Different methods have been developed to deal with heavy metals from aqueous media, including ion exchange (Yang et al 2014), membrane filtration (Yang et al 2003), chemical coagulation (Song et al 2004), electro-dialysis (Peng et al 2005), redox (Li et al 2019), and adsorption (Hokkanen et al 2013). Among these methods, adsorption is the most effective method for removing Cr(VI) from wastewater owing to its low cost, easy availability, less secondary pollution, high selectivity, and high removal efficiency of toxic metals (Enniya et al 2018;Zhang et al 2020).…”

Section: Introductionmentioning

confidence: 99%

Adsorption of Hexavalent Chromium on KOH Activated Carbon Derived from Water Hyacinth Leaf Coated with Polyaniline/Polypyrrole

Taye,

Mehretie,

Getachew

et al. 2024

SEJS

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KOH-Activated carbon derived from Water Hyacinth (KOH-WHL-AC) was prepared and coated with Polyaniline-Polypyrrole (PANI/PPY) copolymer for the removal of hexavalent chromium (Cr(VI)) from wastewater. The prepared material was characterized by FT-IR and XRD. The effect of pH, contact time, dosage, and initial Cr(VI) concentrations were optimized using batch adsorption experiment. The adsorption kinetics was found to fit better to pseudo-second-order than the pseudo-first order model. Langmuir and Freundlich isotherm models were analyzed using linear fitting. It was found that the Langmuir adsorption model gives the best fit indicating that the monolayer adsorption of Cr(VI) on the KOH-WHL-AC. The highest adsorption capacity of 409.83 mg/g was achieved at pH 1.0, and equilibrium was achieved within 420 min. The reuse efficiency of the synthesized material was also found to be greater than 54% for five consecutive cycles. Thermodynamic studies have also been carried out and the adsorption was found to be spontaneous and endothermic

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“…Hu et al studied the abilities of Fe 3 O 4 @SiO 2 and Fe 3 O 4 @SiO 2 -NH 2 for the removal of MG dye and found that Fe 3 O 4 @SiO 2 -NH2 showed a good removal efficiency of MG dye (90%) compared with Fe 3 O 4 @SiO 2 (60%) [39]. Tetraethylenepentamine (TEPA) is an organic polyamine molecule that contains five amino groups (two primary and three secondary functional groups) on its structure, which can serve as a binding site for metal ions [40], dyes [41], and CO 2 [42]. Ghasemi et al used TEPFRCA and obtained the maximum adsorption of MG dye from the solvent phase.…”

Section: Introductionmentioning

confidence: 99%

Amine-Terminated Modified Succinic Acid-Magnetite Nanoparticles for Effective Removal of Malachite Green Dye from Aqueous Environment

Melhi

2023

Crystals

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In this study, amine-terminated succinic acid-modified magnetic nanoparticles (MSA@TEPA) have been successfully synthesized using a facile two-step procedure as a new effective adsorbent for the removal of malachite green from aqueous solutions. The MSA@TEPA was characterized by scanning electron microscopy (SEM), Fourier-transform infrared spectroscopy (FTIR), zeta potential, thermal gravimetric analysis (TGA), and X-ray diffraction (XRD) analysis. The parameters influencing the adsorption capacity of MSA@TEPA, such as pH (3–8), contact time (t: 5–480 min), initial concentrations of MG dye (Co: 20–200 mg/L), and adsorbent mass (0.05–0.5 g), were evaluated. It was observed that, under specified experimental conditions (Co: 25 mg/L, pH: 7.1, T: 298 K, agitation rate: 100 rpm, and t: 420 min), the MSA@TEPA nanocomposite exhibits excellent adsorption efficiency (97.74%) for MG dye. The adsorption kinetics follow the PSO model, and the equilibrium data were fitted to the Langmuir isotherm with a maximum adsorption capacity of up to 282.65 mg/g. The thermodynamic parameters indicated that the adsorption process of MG dye was an exothermic process. After five consecutive cycles, MSA@TEPA nanocomposite still show good adsorption efficiency for MG dye. It is assumed that, because of the presence of amine group, adsorption mainly occurred through electrostatic interaction and H-bonding. In conclusion, the study shows a new and effective adsorbent with high adsorptive capacity, easy magnetic separation using an external magnetic field, and reusability for MG dye elimination from aqueous solutions.

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Green and simple synthesis of poly (catechol-tetraethylenepentamine)@aminopropyl-modified silica composite for removing toxic Cr(VI)

Cited by 20 publications

References 45 publications

Comparison of Structure and Adsorption Properties of Mesoporous Silica Functionalized with Aminopropyl Groups by the Co-Condensation and the Post Grafting Methods

Comparison of Structure and Adsorption Properties of Mesoporous Silica Functionalized with Aminopropyl Groups by the Co-Condensation and the Post Grafting Methods

Adsorption of Hexavalent Chromium on KOH Activated Carbon Derived from Water Hyacinth Leaf Coated with Polyaniline/Polypyrrole

Amine-Terminated Modified Succinic Acid-Magnetite Nanoparticles for Effective Removal of Malachite Green Dye from Aqueous Environment

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