Layer-by-Layer assembled films of chitosan and multi-walled carbon nanotubes for the electrochemical detection of 17α-ethinylestradiol

Pavinatto, Adriana; Mercante, Luiza A.; Leandro, Cleiton S.; Mattoso, Luiz H. C.; Corrêa, Daniel S.

doi:10.1016/j.jelechem.2015.08.002

Cited by 53 publications

(39 citation statements)

References 43 publications

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“…Ethinylestradiol (EE2) is a bioactive oestrogen present in the formulation of contraceptive pills administered orally . There are reports in the literature of the electrochemical quantification of both separately; therefore, antagonist effects related to the influence of each of these were not identified .…”

Section: Introductionsupporting

confidence: 90%

Electrochemical Sensor‐Based Ruthenium Nanoparticles on Reduced Graphene Oxide for the Simultaneous Determination of Ethinylestradiol and Amoxicillin

et al. 2017

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The composite material of reduced graphene and Ru nanoparticles (rGO/RuNP) was obtained by electrochemical oxidation of ruthenium nanoparticles immobilised on the glassy carbon electrode (GCE) surface and used for simultaneous electroanalysis of drugs. There are many discussions in the scientific community about the decrease in therapeutic efficacy of contraceptives when associated with antibiotics. The antibiotic effect of the antagonist can increase the contraceptive excretion levels in urine, indicating a reduction in the body and thus a decrease in the desired effect. Using the DPV technique, it was possible to quantify ethinylestradiol (EE2) and amoxicillin (AMX) with a linear response range, 5.50x10−8 – 1.20x10−6 mol L−1, and LOD, 2.04 nmol L−1 and 1.63 nmol L−1, respectively. The results for the electrochemical behaviour of EE2 and AMX using GCE/rGO/RuNP were compared with GCE/rGO and GCE. The GCE/rGO/RuNP showed greater stability and separation anodic peak currents, suitable for the quantification of organic molecules in samples of environmental interest, as well as clinical and food samples.

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Section: Introductionsupporting

confidence: 90%

Electrochemical Sensor‐Based Ruthenium Nanoparticles on Reduced Graphene Oxide for the Simultaneous Determination of Ethinylestradiol and Amoxicillin

et al. 2017

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“…This continuous assembly between the BG scaffold and both biopolymers also resulted in an increase of the mechanical properties, achieving an elastic modulus of 80 MPa and a compressive modulus four times higher than the BG scaffolds. [130] Pavinatto and coworkers [131] assembled CHI/MWNTs films, built on a fluorine doped tin oxide electrode, to study the detection of 17α-ethinylestrol. [132] They found a faster electron transfer kinetics and good detection limit of 0.09 µmol l –1 .…”

Section: Materials Processing Strategies For Chitosan Nanocompositesmentioning

confidence: 99%

“…[130] Pavinatto and coworkers [131] assembled CHI/MWNTs films, built on a fluorine doped tin oxide electrode, to study the detection of 17α-ethinylestrol. [132] They found a faster electron transfer kinetics and good detection limit of 0.09 µmol l –1 . [131] Couto et al .…”

Section: Materials Processing Strategies For Chitosan Nanocompositesmentioning

confidence: 99%

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Chitosan nanocomposites based on distinct inorganic fillers for biomedical applications

Moura

Mano

Paiva

et al. 2016

Science and Technology of Advanced Materials

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Chitosan (CHI), a biocompatible and biodegradable polysaccharide with the ability to provide a non-protein matrix for tissue growth, is considered to be an ideal material in the biomedical field. However, the lack of good mechanical properties limits its applications. In order to overcome this drawback, CHI has been combined with different polymers and fillers, leading to a variety of chitosan-based nanocomposites. The extensive research on CHI nanocomposites as well as their main biomedical applications are reviewed in this paper. An overview of the different fillers and assembly techniques available to produce CHI nanocomposites is presented. Finally, the properties of such nanocomposites are discussed with particular focus on bone regeneration, drug delivery, wound healing and biosensing applications.

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“…Chitin, the main biopolymer used to extract chitosan, it is found in the exoskeletons of arthropods like crustaceans -crab, shrimp; and lobster; insects -ants, bees and butterflies; molluscs, as well as in the cell walls of fungus. Due to your wide range of use and application, technological feasibility has been increasingly studied [1][2][3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Water treatment: Chitosan associated with electrochemical methods

Tamiasso-Martinhon

Souza

Silva

et al. 2017

IOP Conf. Ser.: Mater. Sci. Eng.

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Abstract. Pollution of water bodies due to the presence of toxic metals and organic compounds, bring out a series of environmental problems of public, government and social character. In addition, water pollution, has become the target and source of concern in many industrial sectors. Therefore, it is essential to develop technologies for treatment and purification of water. Chitosan is a natural product derived from chitin, extracted mainly from the shells of crustaceans. It is a low cost, renewable and biodegradable biopolymer of great socioeconomic and environmental importance. The classic treatment of wastewater containing metals involves physical chemistry processes of precipitation, ion exchange and electrochemistry. Electrochemical technology has been presented as the most promising methods for treating wastewater polluted with metals, colloids, dyes or oil in water emulsions; besides being used in removing organic compounds. Alternative methods like adsorption with biosorbents have been investigated. The great advantage of this latter over other techniques is the low generation of residues, easy recovery of metals and the possibility of reuse of the adsorbent. This article aimed to carry out an exploratory study, of bibliographical nature, on the use of chitosan in electrochemical methods for water treatment.

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Layer-by-Layer assembled films of chitosan and multi-walled carbon nanotubes for the electrochemical detection of 17α-ethinylestradiol

Cited by 53 publications

References 43 publications

Electrochemical Sensor‐Based Ruthenium Nanoparticles on Reduced Graphene Oxide for the Simultaneous Determination of Ethinylestradiol and Amoxicillin

Electrochemical Sensor‐Based Ruthenium Nanoparticles on Reduced Graphene Oxide for the Simultaneous Determination of Ethinylestradiol and Amoxicillin

Chitosan nanocomposites based on distinct inorganic fillers for biomedical applications

Water treatment: Chitosan associated with electrochemical methods

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