Preparation of nanocomposites for the removal of phenolic compounds from aqueous solutions

Hernández-Hernández, K. A.; Illescas, Javier; Díaz-Nava, María del Carmen; Martínez-Gallegos, Sonia; Muro-Urista, Claudia; Ortega-Aguilar, Rosa Elena; Rodríguez‐Alba, Efraín; Rivera, Ernesto

doi:10.1016/j.clay.2018.01.020

Cited by 34 publications

(10 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the case of the TGA analyses, the thermal stability of clay materials was very good, and, for all materials, the obtained T 5 values (i.e., the temperature at which the sample loses 5% mass) were found between 480 to 520 °C depending on the nature of the raw clay mineral or the employed cationic surfactant for its organo-modification. As for the copolymer or nanocomposite samples, these values were found from 140 to 150 °C; however, this stability decreased when the organo-modified clay was incorporated into the copolymer matrix structure, which is in concordance with some previous reports [18,21].…”

Section: Resultssupporting

confidence: 92%

“…In this case, peaks did not present any shift and maintained the same pattern. Therefore, it is suggested that the exchange process of the PTMA cations within the clay structure was achieved mainly with the external cations present in the surface of the raw clay mineral [21].…”

Section: Resultsmentioning

confidence: 99%

“…The modification of the homoionized clay mineral was carried out with two different cationic surfactants, namely, HDTMA-Br and PTMA-Cl. In the case of the modification of the clay mineral with HDTMA-Br, it was carried out as reported by Hernández-Hernández et al [21]. Specifically, 10 g of clay material was put in contact with 100 mL of a solution of HDTMA-Br (0.03 M, 30 mEq∙L −1 ) for 48 h at 30 °C and 100 rpm.…”

Section: Methodsmentioning

confidence: 99%

“…The second one is the filler, in the nanoscale range, i.e., from 1 to 100 nm, whose main function is to reinforce the matrix; some examples of fillers are graphene, dichalcogenide materials like MoS 2 MoSe 2 , WS 2 , or MoTe 2 , or natural materials such as clays or zeolites. Specifically, in our research group, we synthesized different types of clay polymer nanocomposites for different purposes, i.e., for the removal from aqueous solutions of azo dyes [18,19], a triarylmethane dye [20], or even phenolic compounds [21].…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Synthesis and Characterization of Clay Polymer Nanocomposites of P(4VP-co-AAm) and Their Application for the Removal of Atrazine

et al. 2019

Self Cite

View full text Add to dashboard Cite

Atrazine (ATZ) is an herbicide which is applied to the soil, and its mechanism of action involves the inhibition of photosynthesis. One of its main functions is to control the appearance of weeds in crops, primarily in corn, sorghum, sugar cane, and wheat; however, it is very toxic for numerous species, including humans. Therefore, this work deals with the adsorption of ATZ from aqueous solutions using nanocomposite materials, synthesized with two different types of organo-modified clays. Those were obtained by the free radical polymerization of 4-vinylpyridine (4VP) and acrylamide (AAm) in different stoichiometric ratios, using tetrabutylphosphonium persulfate (TBPPS) as a radical initiator and N,N′-methylenebisacrylamide (BIS) as cross-linking agent. The structural, morphological, and textural characteristics of clays, copolymers, and nanocomposites were determined through different analytical and instrumental techniques, i.e., X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), and thermogravimetric analysis (TGA). Adsorption kinetics experiments of ATZ were determined with the modified and synthesized materials, and the effect of the ratio between 4VP and AAm moieties on the removal capacities of the obtained nanocomposites was evaluated. Finally, from these sets of experiments, it was demonstrated that the synthesized nanocomposites with higher molar fractions of 4VP obtained the highest removal percentages of ATZ.

show abstract

Section: Resultssupporting

confidence: 92%

Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Synthesis and Characterization of Clay Polymer Nanocomposites of P(4VP-co-AAm) and Their Application for the Removal of Atrazine

et al. 2019

Self Cite

View full text Add to dashboard Cite

show abstract

“…may cause environmental problems even at trace amounts. Interestingly, these organic contaminants were removed using CPNs as adsorbent, due to the existence of polymeric hydrophobic parts on the NCs surfaces [ 57 , 58 , 59 , 60 , 61 , 62 , 63 , 64 , 65 , 66 , 67 , 68 , 69 , 70 , 71 , 72 , 73 , 74 , 75 , 76 , 77 , 78 , 79 , 80 , 81 , 82 , 83 , 84 , 85 , 86 , 87 , 88 , 89 , 90 ]. In this perspective, several CPNs in the form of powder or tablets were prepared using the thin-coated layer methods.…”

Section: Clay-polymers Nanocomposites For Pollutants Removalmentioning

confidence: 99%

Clay-Polymer Nanocomposites: Preparations and Utilization for Pollutants Removal

et al. 2021

View full text Add to dashboard Cite

Nowadays, people over the world face severe water scarcity despite the presence of several water sources. Adsorption is considered as the most efficient technique for the treatment of water containing biological, organic, and inorganic contaminants. For this purpose, materials from various origins (clay minerals, modified clays, zeolites, activated carbon, polymeric resins, etc.,) have been considered as adsorbent for contaminants. Despite their cheapness and valuable properties, the use of clay minerals as adsorbent for wastewater treatment is limited due to many factors (low surface area, regeneration, and recovery limit, etc.). However, clay mineral can be used to enhance the performance of polymeric materials. The combination of clay minerals and polymers produces clay-polymers nanocomposites (CPNs) with advanced properties useful for pollutants removal. CPNs received a lot of attention for their efficient removal rate of various organic and inorganic contaminants via flocculation and adsorption ability. Three main classes of CPNs were developed (exfoliated nanocomposites (NCs), intercalated nanocomposites, and phase-separated microcomposites). The improved materials can be explored as novel and cost-effective adsorbents for the removal of organic and inorganic pollutants from water/wastewater. The literature reported the ability of CPNs to remove various pollutants such as bacteria, metals, phenol, tannic acid, pesticides, dyes, etc. CPNs showed higher adsorption capacity and efficient water treatment compared to the individual components. Moreover, CPNs offered better regeneration than clay materials. The present paper summarizes the different types of clay-polymers nanocomposites and their effective removal of different contaminants from water. Based on various criteria, CPNs future as promising adsorbent for water treatment is discussed.

show abstract

Organoclay with Surfactants: Detoxification of Hazardous Compounds

Ekanayake

Rajapaksha

Vithanage

2023

Advances in Material Research and Technology

View full text Add to dashboard Cite

Preparation of nanocomposites for the removal of phenolic compounds from aqueous solutions

Cited by 34 publications

References 14 publications

Synthesis and Characterization of Clay Polymer Nanocomposites of P(4VP-co-AAm) and Their Application for the Removal of Atrazine

Synthesis and Characterization of Clay Polymer Nanocomposites of P(4VP-co-AAm) and Their Application for the Removal of Atrazine

Clay-Polymer Nanocomposites: Preparations and Utilization for Pollutants Removal

Organoclay with Surfactants: Detoxification of Hazardous Compounds

Contact Info

Product

Resources

About