Synthesis and characterization of a polyurethane-polyaniline macroporous foam material for methyl orange removal in aqueous media

Mendieta-Rodríguez, L.S.; Rodríguez, Luis Mario González; Alcaraz-Espinoza, José J.; Chávez-Guajardo, Alicia E.; Medina-Llamas, Juan C.

doi:10.1016/j.mtcomm.2021.102155

Cited by 12 publications

(9 citation statements)

References 57 publications

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“…In this period of time, the removal of about 36 different organic dyes have been investigated; however, as can be seen from Table 9, the quantitative results showed by the papers greatly varied concerning the maximum dye adsorption capacity resulting from the experimental data. [32] 2000 [59] 133 [80] 140 [17] 573 [63] 255 [21] 331 [69] 1584 [43] 316 [25] 926 [29] 1690 [33] 1146 [26] 1250 [22] 1807 [44] 1409 [19] 1581 [81] (Concentrations in mg/g).…”

Section: Discussionmentioning

confidence: 99%

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Organic Dyes versus Adsorption Processing

López

2021

Molecules

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Even in the first quarter of the XXI century, the presence of organic dyes in wastewaters was a normal occurrence in a series of countries. As these compounds are toxic, their removal from these waters is a necessity. Among the separation technologies, adsorption processing appeared as one of the most widely used to reach this goal. The present work reviewed the most recent approaches (first half of the 2021 year) regarding the use of a variety of adsorbents in the removal of a variety of organic dyes of different natures.

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Section: Discussionmentioning

confidence: 99%

“…A polyurethane/polyaniline material that can be used as an adsorbent for azo dyes from aqueous solutions was developed [ 21 ]. This adsorbent was generated by incorporating polyaniline into the surface of a macroporous polyurethane foam by a chemical polymerization methodology.…”

Section: Adsorbents For the Removal Of Anionic Dyes From Watersmentioning

confidence: 99%

Organic Dyes versus Adsorption Processing

López

2021

Molecules

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“…The organic substrates coated with conducting polymers include synthetic polymers, such as carboxymethylcellulose gel [ 78 ], Kevlar fibers [ 73 ], macroporous melamine sponges [ 16 ], poly(ethylene oxide) [ 76 ], polyimide membrane [ 74 ], polystyrene [ 64 ], poly(vinyl alcohol) aerogel [ 42 ], polyurethane foam [ 77 ], and various natural materials, such as [ 24 , 75 ], chitosan [ 82 ], opuntia ficus [ 80 ], almond and wall nut shells [ 81 ] or tea saponin [ 41 ]. Only exceptionally, both components were simply mixed, e.g., polyaniline and nitrogen-containing carbon nanodots [ 87 ] or zinc oxide [ 61 ].…”

Section: Polyaniline Adsorbentsmentioning

confidence: 99%

Recent Advances in the Removal of Organic Dyes from Aqueous Media with Conducting Polymers, Polyaniline and Polypyrrole, and Their Composites

Stejskal

2022

Polymers

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Water pollution by organic dyes, and its remediation, is an important environmental issue associated with ever-increasing scientific interest. Conducting polymers have recently come to the forefront as advanced agents for removing dye. The present review reports on the progress represented by the literature published in 2020–2022 on the application of conducting polymers and their composites in the removal of dyes from aqueous media. Two composites, incorporating the most important polymers, polyaniline, and polypyrrole, have been used as efficient dye adsorbents or photocatalysts of dye decomposition. The recent application trends are outlined, and future uses also exploiting the electrical and electrochemical properties of conducting polymers are offered.

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“…In fact, PANI-based materials are promising sorbents for anionic dyes [14,16,17]. Their main sorption mechanism is based on an anion-exchange process (dopant anion vs dye), even if short-range interactions, such as hydrogen bonding and π-π stacking, can occur [17,[63][64][65]. Concerning the TiO 2 loaded materials, if on the one hand PT/PU-1 exhibits poor photoactive properties, on the other hand PT/PU-2 and -3 show very promising performances, reaching more than 70% of RHB degradation after 180 min of light irradiation.…”

Section: Rhb Abatement Capacity Of Hcl-doped Pt/pusmentioning

confidence: 99%

Solar Light Photoactive Floating Polyaniline/TiO2 Composites for Water Remediation

et al. 2021

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In the present study, the development of innovative polyurethane-polyaniline/TiO2 modified floating materials applied in the sorption and photodegradation of rhodamine B from water matrix under solar light irradiation is reported. All the materials were fabricated with inexpensive and easy approaches and were properly characterized. The effect of the kind of polyaniline (PANI) dopant on the materials’ behavior was investigated, as well as the role of the conducting polymer in the pollutant abatement on the basis of its physico-chemical characteristics. Rhodamine B is removed by adsorption and/or photodegradation processes depending on the type of doping agent used for PANI protonation. The best materials were subjected to recycle tests in order to demonstrate their stability under the reaction conditions. The main transformation products formed during the photodegradation process were identified by ultraperformance liquid chromatography-mass spectrometry (UPLC/MS). The results demonstrated that photoactive floating PANI/TiO2 composites are useful alternatives to common powder photocatalysts for the degradation of cationic dyes.

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Synthesis and characterization of a polyurethane-polyaniline macroporous foam material for methyl orange removal in aqueous media

Cited by 12 publications

References 57 publications

Organic Dyes versus Adsorption Processing

Organic Dyes versus Adsorption Processing

Recent Advances in the Removal of Organic Dyes from Aqueous Media with Conducting Polymers, Polyaniline and Polypyrrole, and Their Composites

Solar Light Photoactive Floating Polyaniline/TiO2 Composites for Water Remediation

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