Polymers and nanocomposites: synthesis and metal ion pollutant uptake

Rivas, Bernabé L.; Sánchez, Julio; Urbano, Bruno F.

doi:10.1002/pi.5035

Cited by 30 publications

(14 citation statements)

References 180 publications

(219 reference statements)

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“…Although inorganic materials and metal–organic frameworks (MOFs) have been used for iodine capture, these classes of material suffer from low uptake capacity and poor thermal and water stability. COPs, in contrast, display excellent thermal and chemical stability, can be synthesized on large scale, and are recyclable …”

Section: Resultsmentioning

confidence: 99%

“…Although inorganic materials [40] and metal-organic frameworks (MOFs) [41] have been used for iodine capture, these classes of material suffer from low uptake capacity and poor thermala nd water stability.C OPs, in contrast, display excellent thermala nd chemical stability,c an be synthesized on large scale, and are recyclable. [42] Considering the importance of developing materialsfor I 2 removal, we utilized our viologen-based materials for iodine capture and investigated the effect of the viologen redox state on the uptake capacities. In vapor-phase experiments,C OPs were exposed to iodine vaporsinaclosed chamber at 70 8Cand ambient pressure, and iodine uptake was measured gravimetrically after 24 h( Figure 3A).…”

Section: Iodine Capture With Cop1 and Cop2mentioning

confidence: 99%

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Redox‐Responsive Covalent Organic Nanosheets from Viologens and Calix[4]arene for Iodine and Toxic Dye Capture

Škorjanc

Shetty

Sharma

et al. 2018

Chemistry A European J

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Owing to their chemical and thermal stabilities, high uptake capacities, and easy recyclability, covalent organic polymers (COPs) have shown promise as pollutant sponges. Herein, we describe the use of diazo coupling to synthesize two cationic COPs, COP1 and COP2 , that incorporate a viologen-based molecular switch and an organic macrocycle, calix[4]arene. The COPs form nanosheets that have height profiles of 6.00 nm and 8.00 nm, respectively, based on AFM measurements. The sheets remain morphologically intact upon one- or two-electron reductions of their viologen subunits. MD simulations of the COPs containing dicationic viologens indicate that the calix[4]arenes adopt a partial cone conformation and that, in height, the individual 2D polymer layers are 5.48 Å in COP1 and 5.65 Å in COP2 , which, together with the AFM measurements, suggests that the nanosheets are composed of 11 and 14 layers, respectively. Whether their viologens are in dicationic, radical cationic, or neutral form, the COPs exhibit high affinity for iodine, reaching up to 200 % mass increase when exposed to iodine vapor at 70 °C, which makes the materials among the best-performing nanosheets for iodine capture reported in the literature. In addition, the COPs effectively remove Congo red from solution in the pH range of 2-10, reaching nearly 100 % removal within 15 minutes at acidic pH.

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Section: Resultsmentioning

confidence: 99%

Section: Iodine Capture With Cop1 and Cop2mentioning

confidence: 99%

Redox‐Responsive Covalent Organic Nanosheets from Viologens and Calix[4]arene for Iodine and Toxic Dye Capture

Škorjanc

Shetty

Sharma

et al. 2018

Chemistry A European J

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“…These polymeric materials – with the capability of removing contaminants – are available in different forms such as crosslinked polymers and polymeric nanocomposites (Fig. ) . Water‐soluble polymers can become insoluble compounds by establishing a point of crosslinking and connecting polymer chains that leads to polymer resins.…”

Section: Polymer Supports For the Separation Of Hazardous Organic Polmentioning

confidence: 99%

“…1). 38 Water-soluble polymers can become insoluble compounds by establishing a point of crosslinking and connecting polymer chains that leads to polymer resins. At the same time, these polymers have the ability to become polymer composites when a filler of a different chemical nature (metal, metal oxide, ceramic) is dispersed in the polymer matrix.…”

Section: Polymer Supports For the Separation Of Hazardous Organic Polmentioning

confidence: 99%

Polymer supports for the removal and degradation of hazardous organic pollutants: an overview

Urbano

Bustamante

Palacio

et al. 2020

Polymer International

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Over the last decades, the presence of highly organic pollutants has increased and become an environmental problem that affects all forms of life. To solve or reduce this problem, multiple strategies have been proposed for the elimination and degradation of organic compounds in aqueous media. This review aims to revise and critically discuss the most recent advances in polymer supports to be used for the adsorption and degradation of organic pollutants. However, the greatest challenge with respect to this issue is the industrial scale‐up of bioremediation processes that allow the removal and degradation of compounds in a continuous and large‐scale manner. © 2019 Society of Chemical Industry

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“…Generally, ion exchange membrane is categorized into cation and anion exchangers based on the form of ionic group attached to the membrane medium. The most common used anion exchange are weak base-type, which are type I ion exchange resins (-N(CH 3 ) 3 ), and type II ion exchange resins (-N(CH 3 ) 2 C 2 H 4 OH), while cation exchangers are the weak acidic carboxylate groups (-COO-) and strong acid-type groups (-SO 3 ) [80]. The modification of commercially existing ion exchangers and the design of appropriate organic polymeric and inorganic metal oxide membranes with biocide and catalytic performance have been of great interest [81].…”

Section: Metal Oxide Polymer Nanocomposite In Ion Exchange Technologiesmentioning

confidence: 99%

Metal Oxide Polymer Nanocomposites in Water Treatments

Opoku¹,

Kiarii²,

Govender³

et al. 2017

Descriptive Inorganic Chemistry Researches of Metal Compounds

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Recently, several pollutants such as dyes, pharmaceuticals and phenolic compounds, which can cause toxic effects to human health, have identified in water resources. Water pollution has extensively studied and several conventional techniques, such as chemical treatment, adsorption, biological treatment, and membrane-based separation, have adopted for pollutants removal from wastewater/ water resources. However, these techniques had led to the production of soluble refractory organic compounds and healththreatening bacteria that are hard to be removed. Recently, photocatalysis has considered as one of the most viable technology for water treatment using sunlight to eliminate harmful bacteria and pollutants owing to its cost-effectiveness and high efficiency. Metal oxide and polymers have become promising materials for water treatment owing to their properties, such as surface mobility, large surface area and superb magnetic and optical properties. This book chapter discusses recent design and synthesis of visible light response polymer/metal oxide nanocomposite through several synthetic strategies for water treatment. The results show that the polymer-metal oxide nanocomposite possesses a superior photodegradation activity toward pollutants under simulated visible light. Major challenges in polymer-metal oxide nanocomposite synthesis and future research perspectives for developing alternate synthesis methodologies are also discussed.

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Polymers and nanocomposites: synthesis and metal ion pollutant uptake

Cited by 30 publications

References 180 publications

Redox‐Responsive Covalent Organic Nanosheets from Viologens and Calix[4]arene for Iodine and Toxic Dye Capture

Redox‐Responsive Covalent Organic Nanosheets from Viologens and Calix[4]arene for Iodine and Toxic Dye Capture

Polymer supports for the removal and degradation of hazardous organic pollutants: an overview

Metal Oxide Polymer Nanocomposites in Water Treatments

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