Facial conjugate adsorbent for sustainable Pb(II) ion monitoring and removal from contaminated water

Hasan, Md. Munjur; Salman, Md. Shad; Hasan, Md. Nazmul; Rehan, Ariyan Islam; Awual, Mrs Eti; Rasee, Adiba Islam; Waliullah, R.M.; Hossain, Mohammed Sohrab; Kubra, Khadiza Tul; Sheikh, Md. Chanmiya; Khaleque, Md. Abdul; Marwani, Hadi M.; Islam, A. K. M. Sadrul; Awual, Md. Rabiul

doi:10.1016/j.colsurfa.2023.131794

Cited by 158 publications

(21 citation statements)

References 67 publications

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“…The data between the capture capacity of Cage-MOF and temperature are also studied in order to study its adsorption performance in depth (Figure b). As shown in Table S4, the calculation result of the thermodynamic experiment shows that the Δ H , Δ S , and Δ G are negative during the adsorption process . These values indicate that the capture of Cage-MOF is a spontaneous fever process .…”

Section: Resultsmentioning

confidence: 95%

“…As shown in Table S4, the calculation result of the thermodynamic experiment shows that the ΔH, ΔS, and ΔG are negative during the adsorption process. 47 These values indicate that the capture of Cage-MOF is a spontaneous fever process. 48 It is worth emphasizing that the capture of Pb(II) ions in Cage-MOF is an uncommon exothermic reaction, and its adsorption capacity decreases with increasing temperature, which indicates that Cage-MOF can obtain a maximum adsorption capacity at room temperature.…”

Section: Synthesis Ofmentioning

confidence: 97%

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Functional Materials for Water Restoration: A “Fish Cage” for Efficient Capture of Pb(II) Ions

Wang,

Guo,

Wei

et al. 2023

Langmuir

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In this work, a “fish cage” material for trapping Pb(II) ions has been successfully obtained, which is a novel clathrate functionalized metal–oganic framework (Cage-MOF) by introducing free adsorption sites (SO4 2–). The three-dimensional (3D) cage structure of Cage-MOF gives it a larger contact area and can capture “swimming fish” (Pb(II)) like a “fishing cage” in a water solution. This is the first high-efficiency adsorption material obtained by introducing free coordination groups. Cage-MOF not only has excellent water stability but also improves the selectivity and affinity for Pb(II) ions in water because of the presence of sulfate adsorption sites, and its adsorption capacity is as high as 806 mg/g. This work shows a novel and effective idea for the synthesis of water restoration materials.

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Section: Resultsmentioning

confidence: 95%

Section: Synthesis Ofmentioning

confidence: 97%

Functional Materials for Water Restoration: A “Fish Cage” for Efficient Capture of Pb(II) Ions

Wang,

Guo,

Wei

et al. 2023

Langmuir

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“…In addition, the high-resolution Cu 2p XPS spectrum realized that the peaks at Cu 2p3/2 can be divided into two small peaks (Figure d), Cu–N and Cu–O, indicating that Cu 2+ was not only combined by electrostatic attraction during the adsorption process but also chelated with tertiary amine groups and oxygen-containing groups such as hydroxyl/carboxylic groups in the adsorbent. Therefore, the adsorption mechanism of CPPF adsorbent on heavy metal ions is the result of the synergy of electrostatic attraction and functional group chelation. − ,− …”

Section: Resultsmentioning

confidence: 99%

Durable Carboxylated Porous Polymer Foam as a High-Performance Adsorbent for Dye and Heavy Metal Ion Removal

Liu

Gao

Zhang

et al. 2023

ACS Appl. Eng. Mater.

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PolyHIPEs are porous emulsion-templated polymers synthesized within high internal phase emulsions (HIPEs), which are generally used as adsorbents due to their excellent porosity and large specific surface area. However, most reported polyHIPEs-based adsorbents showed inferior adsorption performance due to their hydrophobic nature and limited stability. Herein, we prepared a novel carboxylated porous polymer foam (CPPF) by covalently grafting iminodiacetic acid onto glycidyl methacrylate (GMA)-based PolyHIPEs. CPPF has a large specific surface area of 25.07 m 2 /g and abundant surface hydrophilic carboxyl groups, which give it a lower potential than porous foam without carboxylation treatment (stable at −32 mV when the pH is higher than or equal to 5). The strong electronegativity on the CPPF surface gives it highly effective adsorption of electropositive contaminants. Notably, the CPPF can effectively adsorb various dyes (methylene blue, malachite green, and methyl violet) and heavy metals (Cu 2+ and Cr 3+ ) with adsorption capacities over 500 and 30 mg/g, respectively, which are superior to most reported adsorbents under similar conditions. Furthermore, the CPPF demonstrates great stability and recyclability with removal efficiency higher than 97% after five consecutive adsorption/desorption cycles, indicating its great potential for diverse environmental engineering applications.

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“…43 The evaluation of adsorption selectivity of the CTA−Zr membrane for heavy metals is crucial for practical applications, given the presence of ubiquitous coexisting ions of water, such as Ca(II), Mg(II), and Na(I), which have a competitive adsorption effect on heavy metals. 43,46 A commercial ion exchanger, D001, was used as a reference, and its basic properties are listed in Table S1. As shown in Figure 3E,F, in the absence of coexisting ions, CTA−Zr and D001 exhibited effective scavenging activity for Pb(II) with a removal efficiency of >98.5%.…”

Section: Filtration Adsorptionmentioning

confidence: 99%

Facile Fabrication of Carbon Hybrid Membranes by Fast Self-Assembled Coating with Metal–Phenolic Networks for the Selective Separation of Lead from Water

Qiu,

Wang,

et al. 2023

ACS EST Water

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Inert surface chemistry of carbon materials hinders their flexibility in modification for environmental remediation. Herein, the green facile surface coating of metal−phenolic networks on activated carbon via rapid self-assembly is reported for selective separation of Pb(II) from water. The resulting hybrid membrane (CTA−Zr) demonstrates excellent mechanical stability and water flux at a mass ratio of 80% activated carbon and 20% TA−Zr. Data indicate that Pb(II) adsorption of CTA−Zr is up to 592.75 mg in TA−Zr content and a superior selectivity with a distribution coefficient (K d ) of 55.11 L•g −1 with regard to Pb(II), exceeding that of the ion exchanger D001 by 226 times. Underlying adsorption mechanism is mainly dominated by proton exchange between Pb(II) and phenolic hydroxyl groups of TA as indicated by X-ray photoelectron spectroscopy analysis. Continuous filtration experiments demonstrate that 2850 L of water per square meter of a membrane can be treated using CTA−Zr with a breakthrough point of 1.0 mg•L −1 , whereas D001 membrane yields 100 L of clean water. Saturated CTA−Zr can be regenerated more than five times without a considerable decline in performance. This study introduces a novel chemical modification approach for the inert interface to enhance heavy metals removal from water.

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Facial conjugate adsorbent for sustainable Pb(II) ion monitoring and removal from contaminated water

Cited by 158 publications

References 67 publications

Functional Materials for Water Restoration: A “Fish Cage” for Efficient Capture of Pb(II) Ions

Functional Materials for Water Restoration: A “Fish Cage” for Efficient Capture of Pb(II) Ions

Durable Carboxylated Porous Polymer Foam as a High-Performance Adsorbent for Dye and Heavy Metal Ion Removal

Facile Fabrication of Carbon Hybrid Membranes by Fast Self-Assembled Coating with Metal–Phenolic Networks for the Selective Separation of Lead from Water

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