Sorption properties of a new thermosensitive copolymeric sorbent bearing phosphonic acid moieties in multi-component solution of cationic species

Graillot, Alain; Bouyer, Denis; Monge, Sophie; Robin, Jean‐Jacques; Loison, Pierre; Faur, Catherine

doi:10.1016/j.jhazmat.2013.05.050

Cited by 27 publications

(21 citation statements)

References 22 publications

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“…35,174,175 In this approach, phosphonic acid groups are inserted along a polymer chain (with or without polyethylene glycol moieties) to yield multiphosphonic acid ligands. Such phosphonic acid based polymer ligands were tested by a few groups and were shown to exhibit a higher coordinating affinity towards metal oxide surfaces than their carboxylic acid counterparts, especially under acidic conditions.…”

Section: Exchanging the Native Cap With Hydrophilic Ligandsmentioning

confidence: 99%

“…Such phosphonic acid based polymer ligands were tested by a few groups and were shown to exhibit a higher coordinating affinity towards metal oxide surfaces than their carboxylic acid counterparts, especially under acidic conditions. 35,175 Polysaccharides have also been used for coating iron oxide nanoparticles, due to their biocompatibility. 176,177 The chelation is driven by the interaction between the hydroxyl groups and the iron oxide surface of the nanoparticles.…”

Section: Exchanging the Native Cap With Hydrophilic Ligandsmentioning

confidence: 99%

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Strategies for interfacing inorganic nanocrystals with biological systems based on polymer-coating

et al. 2015

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Interfacing inorganic nanoparticles and biological systems with the aim of developing novel imaging and sensing platforms has generated great interest and much activity. However, the effectiveness of this approach hinges on the ability of the surface ligands to promote water-dispersion of the nanoparticles with long term colloidal stability in buffer media. These surface ligands protect the nanostructures from the harsh biological environment, while allowing coupling to target molecules, which can be biological in nature (e.g., proteins and peptides) or exhibit specific photo-physical characteristics (e.g., a dye or a redox-active molecule). Amphiphilic block polymers have provided researchers with versatile molecular platforms with tunable size, composition and chemical properties. Hence, several groups have developed a wide range of polymers as ligands or micelle capsules to promote the transfer of a variety of inorganic nanomaterials to buffer media (including magnetic nanoparticles and semiconductor nanocrystals) and render them biocompatible. In this review, we first summarize the established synthetic routes to grow high quality nanocrystals of semiconductors, metals and metal oxides. We then provide a critical evaluation of the recent developments in the design, optimization and use of various amphiphilic copolymers to surface functionalize the above nanocrystals, along with the strategies used to conjugate them to target biomolecules. We finally conclude by providing a summary of the most promising applications of these polymer-coated inorganic platforms in sensor design, and imaging of cells and tissues.

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Section: Exchanging the Native Cap With Hydrophilic Ligandsmentioning

confidence: 99%

Section: Exchanging the Native Cap With Hydrophilic Ligandsmentioning

confidence: 99%

Strategies for interfacing inorganic nanocrystals with biological systems based on polymer-coating

et al. 2015

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“…The R 2 values are higher than those of the pseudo first-order model and indicate that the pseudo-second order kinetic model is a better fit for describing biosorption kinetics of the heavy metals analyzed in this study onto rod-type biosorbent. This indicates that cation metals adsorption is a chemisorption process involving valency forces through the sharing or exchange of electrons between rodtype biosorbent and cation metal ions acting as covalent forces [24]. Ca-alginateimmobilized inactive biomass has known that to some extent carboxyl groups (−COOH) are responsible for the binding ofmetal ions at higher pHs (above 4), which attract the positively charged metal ions and binding occurs.…”

Section: Removal Of Cationic Metal By Rod-type Biosorbentsmentioning

confidence: 99%

Evaluation of metal removal performance of rod-type biosorbent prepared from sewage-sludge

Seo

Kim

Park

et al. 2019

Environmental Engineering Research

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The aim of this work was to evaluate the potential use of recycled sewage-sludge as a biosorbent for removing various metals from aqueous solution. To improve adsorption capacity and accomplish easy solid-liquid separation, the sludge was immobilized into the rod type with Ca-alginate. The removal performance was analyzed through kinetic and equilibrium studies. We conducted batch experiments examining the removal of cationic metals and anionic metals/metalloid by the rod-type biosorbent (cations: Cd(II), Cu(II), Cr(III), Fe(II), Ni(II), Pb(II), Zn(II), Mn(II), Al(III), As(III), and Fe(III); anions: As(V), Cr(VI) and Mn(VII)).The rod-type biosorbent, which was manufactured using sludge and alginate, showed higher adsorption capability for the removal of cationic metal than anionic metal. In evaluations of cation adsorption, divalent cations adsorbed more and faster than trivalent cations. The maximum uptake of Cd(II) was determined to be 67.29 mg/g, which was higher than those of other sludge adsorbents reported in the literature. In evaluations of anions, As(V), Cr(VI) and Mn(VII) were removed by different mechanisms. In this study, we simultaneously evaluated the adsorption performance of a new biosorbent for cationic and anionic metals. Our findings are expected to contribute to the commercialization of sludge-based biosorbents.

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“…The performed studies show that, in addition to their application in medical industries [32,33], electrochemical industries [34,35], and agricultural industries [36], smart polymers have newly attracted many scientists to examine their applications in environmental engineering. The removal of pollutants like nickel [37,38], heavy metals [39][40][41], metal cations [42], calcium [43], and gold ion [39] is among the reported applications of smart polymer in environmental engineering.…”

Section: Introductionmentioning

confidence: 99%

Comparative Study on Adsorptive Characteristics of Diazinon and Chlorpyrifos from Water by Thermosensitive Nanosphere Polymer

Pishgar

Panahi

Haghi

et al. 2016

Journal of Chemistry

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Diazinon and chlorpyrifos are two common organophosphorus poisons to fight the pests in Iran. The removal of these poisons from water by thermosensitive nanosphere polymer (TNP), synthesized from the copolymerization of N-isopropylacrylamide and 3-allyloxy-1,2-propanediol, was investigated. The effect of pH, contact time, and the initial concentration on the removal amount was studied. The highest removal amount of these poisons by TNP occurred at pH 7. The contact time increase improves the removal amount and the equilibrium contact time for diazinon and chlorpyrifos was 10 and 18 min, respectively. For low concentration of less than 50 mgL−1it was shown that removal capacity remains above 95%. The initial concentration above 50 mgL−1decreased the removal amount, in which chlorpyrifos showed a greater decrease. The kinetic data has been checked using pseudo first-order, pseudo second-order, and intraparticle diffusion equations. The intraparticle diffusion model had the best conformability for the adsorption process.

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Sorption properties of a new thermosensitive copolymeric sorbent bearing phosphonic acid moieties in multi-component solution of cationic species

Cited by 27 publications

References 22 publications

Strategies for interfacing inorganic nanocrystals with biological systems based on polymer-coating

Strategies for interfacing inorganic nanocrystals with biological systems based on polymer-coating

Evaluation of metal removal performance of rod-type biosorbent prepared from sewage-sludge

Comparative Study on Adsorptive Characteristics of Diazinon and Chlorpyrifos from Water by Thermosensitive Nanosphere Polymer

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