Removal of heavy metals from aqueous solution by poly(acrylamide-co-acrylic acid) modified with porous materials

Zendehdel, Mojgan; Barati, Aboulfazl; Alikhani, H.

doi:10.1007/s00289-011-0464-5

Cited by 53 publications

(28 citation statements)

References 39 publications

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“…The peaks at 3342 and 1656 cm −1 for the pure PAA represent the N-H groups of polyacrylamide and the carbonyl group, respectively. There are two bonds at 1361 and 1619 cm −1 related to the COO-group in polyacrylate and the peaks at 1449 and 2949 cm −1 are due to C-N and C-H bonding, respectively [16]. As can be seen, there are insignificant changes for all of the prepared samples.…”

Section: Resultsmentioning

confidence: 66%

Poly(Acrylamide-Co-Acrylic Acid)-Zinc Acetate Polymer Electrolytes: Studies Based on Structural and Morphology and Electrical Spectroscopy

Hassan¹,

Yusof²

2014

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Solid polymer electrolytes (SPEs) of polyacrylamide-co-acrylic acid (PAA) as the polymer host and zinc acetate (ZnA) as an ionic dopant were prepared using a single solvent by the solution casting technique. The amorphous and crystalline structures of film were investigated by X-ray diffraction (XRD). The surface morphology of samples was examined by scanning electron microscopy (SEM). The composition and complex formation of films were characterized by Fourier transform infrared (FTIR) spectroscopy. The conductivity of the PAA-ZnA films was determined by electrochemical impedance spectroscopy. According to the XRD and FTIR analyses, all electrolyte films were in amorphous state and the existence of interaction between Zn 2+ cations and the PAA structure confirms that the film was successfully prepared. The SEM observations reveal that the electrolyte films appeared to be rough and flat with irregularly shaped surfaces. The highest ionic conductivity (σ) of 1.82 × 10 − 5 Scm −1 was achieved at room temperature (303 K) for the sample containing 10 wt % ZnA.

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Section: Resultsmentioning

confidence: 66%

Poly(Acrylamide-Co-Acrylic Acid)-Zinc Acetate Polymer Electrolytes: Studies Based on Structural and Morphology and Electrical Spectroscopy

Hassan¹,

Yusof²

2014

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“…For example, the introduction of SiO 2 nanoparticles that can easily aggregate in the polymer matrix owing to high surface area and surface energy leads to lower glass transition temperature . Moreover, the introduction of inorganic nanosized filler compromises the transparency of PMMA due to the phase separation of nanocomposites and limits its applications .…”

Section: Introductionmentioning

confidence: 99%

The effects of structure of POSS on the properties of POSS/PMMA hybrid materials

Jiao

Wang

et al. 2014

Polym Eng Sci

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Octa‐vinyl polyhedral oligomeric silsesquioxane (V‐POSS) and octa‐(methacryloxy) propyl polyhedral oligomeric silsesquioxane (M‐POSS) were incorporated into PMMA to prepare POSS/PMMA hybrid materials at molecular level via in situ polymerization. The resulting hybrid materials showed only swelling instead of solution in ethyl acetate, while pristine PMMA completely dissolved in ethyl acetate; moreover, the M‐POSS/PMMA hybrid materials exhibited more excellent resistance to solvent stress cracking. An excellent transparency was observed for all hybrid materials. Incorporation of V‐POSS and M‐POSS significantly improved thermal properties of PMMA. The thermal decomposition temperature of hybrid materials was enhanced except a slightly compromised initial decomposition temperature. The hybrid materials prepared with 0.2–0.6 mol% M‐POSS or V‐POSS improved the reinforcing and toughening properties in comparison to pristine PMMA. Also, the incorporation of POSS decreased the dielectric constant and dielectric loss of the hybrid materials with more voids introduced into the composites no matter the structure of POSS. POLYM. ENG. SCI., 55:565–572, 2015. © 2014 Society of Plastics Engineers

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“…For the determination of the effect of initial metal ions concentration on the adsorption, the nanohydrogel was treated with a series of metal ions solution of gradually increasing concentrations [29]. Removal efficiency of the nanohydrogel with different initial metal ions solution concentrations is shown in Fig.…”

Section: Effect Of Initial Metal Ions Concentrationmentioning

confidence: 99%

Removal of heavy metal ions from aqueous solution by superabsorbent poly (NIPAAm/DAPB/AA) amphoteric nanohydrogel

Mahida

Patel

2015

Desalination and Water Treatment

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A B S T R A C TThe present study demonstrates the synthesis of superabsorbent poly (NIPAAm/DAPB/ AA) amphoteric nanohydrogels by inverse microemulsion polymerization and its application for the removal of heavy metal ions such as Pb(II) and Hg(II) from aqueous solution. Difference between with and without metal ions-adsorbed nanohydrogels was characterized by FT-IR, TGA, SEM, and EDX analyses. The particle size distribution of hydrogel nanoparticles was predicted by TEM micrograph to be between 30 and 40 nm. Specific surface area and pore volume of nanohydrogel were investigated with BET and BJH analysis. Maximum removal efficiency of Pb(II) and Hg(II) metal ions was investigated with treatment time, initial metal ion concentrations, pH values, and adsorbent dose. Finally, the equilibrium removal efficiency was analyzed according to the Langmuir and Freundlich adsorption isotherm model. From the adsorption studies, the maximum removal efficiency of metal ions toward the nanohydrogel was found to be in the following order: Pb(II) > Hg(II).

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Removal of heavy metals from aqueous solution by poly(acrylamide-co-acrylic acid) modified with porous materials

Cited by 53 publications

References 39 publications

Poly(Acrylamide-Co-Acrylic Acid)-Zinc Acetate Polymer Electrolytes: Studies Based on Structural and Morphology and Electrical Spectroscopy

Poly(Acrylamide-Co-Acrylic Acid)-Zinc Acetate Polymer Electrolytes: Studies Based on Structural and Morphology and Electrical Spectroscopy

The effects of structure of POSS on the properties of POSS/PMMA hybrid materials

Removal of heavy metal ions from aqueous solution by superabsorbent poly (NIPAAm/DAPB/AA) amphoteric nanohydrogel

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