Chitosan-Based Lead Ion-Imprinted Interpenetrating Polymer Network by Simultaneous Polymerization for Selective Extraction of Lead(II)

Hande, Pankaj E.; Kamble, Sanjay P.; Samui, A. B.; Kulkarni, Prashant S.

doi:10.1021/acs.iecr.5b04889

Cited by 55 publications

(19 citation statements)

References 55 publications

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“…The deconvoluted N 1s spectrum showed a band at BE=399.7 eV assigned to free amine groups and a weak band at BE=401.4 eV that is assigned to the protonated amino group (−NH 3 + ; Figure c) . The deconvoluted high‐resolution O 1s spectrum of Mn@CS@Ru is shown in Figure d. The peak at BE=529.9 eV is attributed to the lattice oxygen of M−O (M=Mn, Fe, Ru), and the peaks at BE=531.2, 532.3, and 533.3 eV are attributed to the O in TPP (P 3 O 10 5− ) and the −OH and O−C−O in CS . In the case of the P 2p spectrum, the bands at BE=133.2 and 134.1 eV are ascribed to P 2p 3/2 and P 2p 1/2 , respectively, which confirms the ionic gelation between CS and TPP (Figure h) .…”

Section: Resultsmentioning

confidence: 98%

Highly Active Ruthenium Supported on Magnetically Recyclable Chitosan‐Based Nanocatalyst for Nitroarenes Reduction

et al. 2017

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A Ru supported on a magnetically separable chitosan‐based nanomaterial (Mn@CS@Ru) was prepared by wet impregnation based on ionic gelation using sodium tripolyphosphate as a cross‐linking agent. The ionic gelation of chitosan leads to a supporting matrix to promote the embedding of manganese(II) ferrite and Ru nanoparticles (NPs) by electrostatic interactions. The effects of the formulation and method parameters on the fabrication process were investigated, and the resulting as‐prepared Mn@CS@Ru nanocatalyst was characterized. The catalytic activity of the Mn@CS@Ru nanomaterial was evaluated in the reduction of 4‐nitrophenol (4‐NP) and 4‐nitroaniline (4‐NA) in the presence of sodium borohydride as a reducing agent at room temperature. The turnover frequency values in the reduction of 4‐NP and 4‐NA were 273.9 and 336.5 min−1, respectively, which were attributed to the very small size of the hybrid nanomaterial (32.0±2.8 nm with 3.9±0.1 nm Ru NPs) that provided a large surface‐area‐to‐volume ratio for the chemical reaction. Furthermore, the hybrid nanocatalyst was recovered easily by magnetic separation after the catalytic reaction and could be reused in at least 10 cycles without a loss of catalytic activity, which confirms its high stability. The present route is a new approach to synthesize highly active magnetic heterogeneous catalysts for the reduction of nitroarenes based on metallic NPs with easy accessibility, excellent activity, and convenient recovery.

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Section: Resultsmentioning

confidence: 98%

Highly Active Ruthenium Supported on Magnetically Recyclable Chitosan‐Based Nanocatalyst for Nitroarenes Reduction

et al. 2017

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“…Zarghami et al (2014) prepared Cu(II) ion-imprinted membranes composed of cross-linked chitosan/poly(vinyl alcohol) for adsorption of the metal from aqueous solutions. A similar ion-imprinted technique was reported for selective adsorption of Pb(II) from a recycling wastewater unit (Hande et al 2016).…”

Section: Removal Of Heavy Metal Ionsmentioning

confidence: 98%

Chitin/Chitosan: Versatile Ecological, Industrial, and Biomedical Applications

Merzendorfer

Cohen

2019

Biologically-Inspired Systems

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Chitin is a linear polysaccharide of N-acetylglucosamine, which is highly abundant in nature and mainly produced by marine crustaceans. Chitosan is obtained by hydrolytic deacetylation. Both polysaccharides are renewable resources, simply and cost-effectively extracted from waste material of fish industry, mainly crab and shrimp shells. Research over the past five decades has revealed that chitosan, in particular, possesses unique and useful characteristics such as chemical versatility, polyelectrolyte properties, gel-and film-forming ability, high adsorption capacity, antimicrobial and antioxidative properties, low toxicity, and biocompatibility and biodegradability features. A plethora of chemical chitosan derivatives have been synthesized yielding improved materials with suggested or effective applications in water treatment, biosensor engineering, agriculture, food processing and storage, textile additives, cosmetics fabrication, and in veterinary and human medicine. The number of studies in this research field has exploded particularly during the last two decades. Here, we review recent advances in utilizing chitosan and chitosan derivatives in different technical, agricultural, and biomedical fields.

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“…Due to their high specificity for target molecules, imprinted polymers facilitate the selective sequestration of metal ions in the presence of other ions . Imprinted polymers have previously enabled the selective binding of Pt(IV), Pb(II) and Cr(VI) from aqueous solutions . He et al described the design of a poly(vinyl alcohol)/poly(acrylic acid) imprinted membrane for the selective chelation of Cu(II) (Fig.…”

Section: Sequestration Of Heavy Metal Ions From Environmental Wastewamentioning

confidence: 99%

Polymer sequestrants for biological and environmental applications

Archer

Hall

Thompson

et al. 2019

Polymer International

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Toxic contaminates have profound consequences on both health and the environment. Consequently, effective approaches for addressing the effects of these toxicants are paramount. Here, we review recent progress in developing polymeric sequestrants for biological toxins, heavy metals and organic micropollutants. Polymers have several advantages as sequestration materials, including relatively low cost and high affinity for target compounds. As a result a number of polymer-based toxin-mitigation applications have been investigated. Naturally occurring toxins may be neutralized with polymers capable of binding and eliminating them from the body. Heavy metal contamination from mining operations, energy and industrial sources may also be mitigated with appropriate chelating polymers, both for environmental remediation and in chelation therapy for metal poisoning. Micropollutants such as pesticides from agriculture and polycyclic aromatic hydrocarbons from combustion processes may also be isolated using polymeric materials. Each of these applications illustrates the capabilities of polymers for eliminating toxic contaminants, thereby facilitating greater health and sustainability.

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Chitosan-Based Lead Ion-Imprinted Interpenetrating Polymer Network by Simultaneous Polymerization for Selective Extraction of Lead(II)

Cited by 55 publications

References 55 publications

Highly Active Ruthenium Supported on Magnetically Recyclable Chitosan‐Based Nanocatalyst for Nitroarenes Reduction

Highly Active Ruthenium Supported on Magnetically Recyclable Chitosan‐Based Nanocatalyst for Nitroarenes Reduction

Chitin/Chitosan: Versatile Ecological, Industrial, and Biomedical Applications

Polymer sequestrants for biological and environmental applications

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