A Polianilina No Cenário Ambiental: Uma Aborgagem Sobre Fotocatálise Heterogênea

Vargas, Vanessa M. M.; Dalmolin, Carla; Pezzin, Sérgio Henrique; Oliveira, Marcela M.; Peralta‐Zamora, Patricio

doi:10.21577/0100-4042.20170175

Cited by 2 publications

(4 citation statements)

References 77 publications

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“…But it was not until the 1970s, with the discovery of doped forms of polymers capable of conducting electric current, that a vast area of research and applications of these materials was established. Polyaniline (PANI), has received prominence due to its good stability, easy obtaining and wide range of applications (5) Polyaniline, obtained from the polymerization of aniline, is formed by repeating units that contain a reduced form (two benzoid rings) and another oxidized form (a quinoid ring and a benzoid ring) (Figure 1), and the form called emeraldine (y = 0.5), when doped by protonation, is the one that can present the highest values of electrical conductivity. Of all the families of conducting polymers, polyaniline is the only one with the dexterity to synthesize and the chemical stability under environmental conditions.…”

Section: Introductionmentioning

confidence: 99%

Production of Portland Cement Loaded with Polyaniline and Evaluation of Sulphidric Gas Sorption Capacity

Maranhão¹,

Araújo²,

Júnior³

et al. 2021

BJEDIS

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Cements are materials based on clay and limestone. Its origin was about 4500 years ago and it is believed that they were the basis for the construction of the pyramids in Egypt. As time went by, limestone was calcined, giving origin to the Portland Cement most used today. Its applications are diverse, ranging from the construction industry to the production of sustainable materials. In this sense, this work aims to produce composites of cement loaded with polyaniline and exposure to hydrogen sulfide gas to assess the sorption capacity of this contaminant, present mainly in sewage treatment. The composites were analyzed by resistivity analysis, in order to investigate the influence of PAni in the geopolymer matrix and its ability to conduct electrical energy, after H2S sorption and gravimetry, aiming to observe the increase in mass (g) during the sorption process. All tests were performed in triplicate and the mean, standard deviation and confidence limit were calculated to obtain the reliability of the results. .

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Section: Introductionmentioning

confidence: 99%

Production of Portland Cement Loaded with Polyaniline and Evaluation of Sulphidric Gas Sorption Capacity

Maranhão¹,

Araújo²,

Júnior³

et al. 2021

BJEDIS

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“…Currently, the industrial production of organic coatings with anticorrosive capacity is consolidated with the use of inorganic inhibitors. These components (Zr, Cr, Pb, Zn and others) have as an inconvenience the possible environmental contamination and human health due to their toxic and/or carcinogenic nature [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

“…Intrinsically Conductive Polymers (ICP) can offer advantages that enable environmental compatibility and properties that minimize or slow down the corrosive process. In addition, the use of ICP in organic coatings can result in savings in electricity consumption, as they could totally or temporarily replace rectifiers that are used for the application of printed current to form and maintain passivation of oxidizable metals [1,4].…”

Section: Introductionmentioning

confidence: 99%

“…ICP polyaniline (PAni) has aroused significant interest in the scientific and technological environment for years due to the low cost characteristics of the monomer (aniline), the ease of synthesis, the excellent stability under certain environmental conditions in both non-conductive and conductive form, the ability to become electronic and ionic insulator in the oxidized state, representing desirable properties for the production of barrier effect in coatings and enabling the oxidation reactions capable of forming and/or preserving passivating oxides for various passivable metals, in addition to possessing properties that make it possible to obtain free-standing films [1,4,5].…”

Section: Introductionmentioning

confidence: 99%

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Passivation of Carbon Steel Using Intelligent Epoxy Paint

Silva

Meneguzzi

2020

Coatings

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This paper presents the production of an epoxy paint associated with a determined concentration of PAni emeraldine base binder, in order to increase dispersion of PAni polymer chains in the paint allow physical contact between PAni chains, the electrolytic medium, and the metal of interest. The coating called Intelligent Epoxy Paint (IEP) seeks to potentialize the electrolytic capacity of PAni to produce passivation, differentiated research which uses PAni in oxidized and conductive form as paint pigment that needs high PAni concentrations. The physicochemical characterization and morphological presented results that indicate the preservation of the desirable properties of PAni in order to make the passivation process possible. The electrochemical tests showed the passivation and/or maintenance of the passivation of the metal of interest, without the need to apply an external current.

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A Polianilina No Cenário Ambiental: Uma Aborgagem Sobre Fotocatálise Heterogênea

Cited by 2 publications

References 77 publications

Production of Portland Cement Loaded with Polyaniline and Evaluation of Sulphidric Gas Sorption Capacity

Production of Portland Cement Loaded with Polyaniline and Evaluation of Sulphidric Gas Sorption Capacity

Passivation of Carbon Steel Using Intelligent Epoxy Paint

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