Highly stable and redox active nano copper species stabilized functionalized-multiwalled carbon nanotube/chitosan modified electrode for efficient hydrogen peroxide detection

Annamalai, Senthil Kumar; Barathi, Palani; Pillai, K. Chandrasekara

doi:10.1016/j.colsurfa.2011.12.032

Cited by 64 publications

(26 citation statements)

References 45 publications

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“…Estos estudios han analizado la interacción de los polímeros durante la formación de las películas, así como el efecto de la distribución e interacciones de los compuestos sobre las propiedades físicas, antimicrobianas, químicas, entre otras [59][60][61][62][63][64][65][66][67][68][69][70][71][72][73][74]. Muchas aplicaciones han sido desarrolladas en campos de la investigación como en el área de electrónica [75][76][77][78][79][80][81][82][83][84][85], la inmovilización de enzimas [86][87][88][89], el desarrollo de nuevos materiales con propiedades ópticas específicas [81,[90][91][92], la liberación de compuestos [93][94][95], entre otras.…”

Section: Conformación De Películas En Multicapasunclassified

Modificaciones físicas, químicas y enzimáticas y sus efectos sobre las propiedades de las películas de quitosano

Valderrama

Albarracín

2014

Matéria (Rio J.)

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Modificaciones físicas, químicas y enzimáticas y sus efectos sobre las propiedades de las películas de quitosano.Physical, chemical and enzymatic modifications and their effects on the properties of chitosan films. RESUMENLas recientes investigaciones en el campo de biopolímeros han intentado brindar soluciones tecnológicas a los retos en el campo de la ciencia y la tecnología de los materiales. En los últimos años, se han llevado a cabo investigaciones con el objetivo de modificar las propiedades de películas empleando tratamientos enzimáticos y físicos, tales como la aplicación de radiaciones, pulsos eléctricos, plasma, tratamientos térmicos, uso de fluidos supercríticos, así como la conformación de películas en multicapas. Estas modificaciones cambian las propiedades antimicrobianas, físicas y químicas de las películas de quitosano y permiten desarrollar una extensa cantidad de aplicaciones en los campos de biomedicina, farmacología, biotecnología y en la industria de cosméticos y de alimentos. El objetivo del presente artículo de revisión es dar a conocer los nuevos avances en el campo de modificaciones físicas y enzimáticas de películas de quitosano explicando diferentes técnicas empleadas en los últimos años.Palabras clave: quitosano, polímeros, películas modificadas, aditivos alimenticios. ABSTRACTRecent research on biopolymer has focused its efforts to provide technological solutions to current and future challenges in the field of science and technology of materials. The properties of chitosan films have been modified by enzymatic and physical treatments such as the application of radiation, electric pulses, plasma, heat treatments, use of supercritical fluids as well as the formation of multilayer films. These modifications change antimicrobial, physical and chemical properties of chitosan films, and allow developing a wide range of applications in the fields of biomedicine, pharmacology, biotechnology, cosmetic and food industries. The purpose of this review is to present new developments in the field of physical and enzymatic modifications of chitosan films describing the different techniques carried out on the last years.

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Section: Conformación De Películas En Multicapasunclassified

Modificaciones físicas, químicas y enzimáticas y sus efectos sobre las propiedades de las películas de quitosano

Valderrama

Albarracín

2014

Matéria (Rio J.)

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“…In addition, these unique properties of nanostructured materials [2][3][4][5][6][7][8][9] facilitate the discovery of new applications, which can not be achieved with the use of bulk materials. One such area has involved the development of electrochemical sensors [10][11][12], especially those using inexpensive nanoparticles, such as copper [13], nickel [14], and their oxides [15]. These substances offer a range of morphologies, high specific surface area, good electrocatalytic activity, improved biocompatibility and electron transfer reactions at a lower overpotential.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical hydrogen peroxide sensor based on a glassy carbon electrode modified with nanosheets of copper-doped copper(II) oxide

Song

You

et al. 2015

Microchim Acta

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A new electrochemical sensor for H 2 O 2 was constructed by depositing copper doped CuO nanosheets on a glassy carbon electrode (GCE). The morphology and composition of the modified electrode were characterized via scanning electron microscopy, energy dispersive X-ray spectroscopy and X-ray diffraction. The electrochemical properties of the electrode were studied using cyclic voltammetry and electrochemical impedance spectroscopy. The catalytic performance of the sensor was studied in 100 mM NaOH solution via differential pulse voltammetry and revealed the sensor to display significantly improved electrocatalytic activity with respect to the analysis of the H 2 O 2 in comparison to a plain GCE or a GCE modified with copper only. The response to H 2 O 2 at a working voltage of −0.46 V (vs. Ag/AgCl) is linear in the 0.003 -8 mM concentration range, and the detection limit is 0.21 mM (at an S/N ratio of 3). Satisfactory results were obtained in the analysis of tap, rain and river waters spiked with H 2 O 2 . The analytical performance of this electrode compares favorably to the results obtained with other commonly used techniques for analysis of H 2 O 2 .

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“…CNT with excellent electronic properties are capable of promoting electron transfer rates and it also has large surface area, so it has been used to combine with metal NPs for improving the electrochemical response. Many researchers studied dispersion of metal NPs such as Au [26], Ag [27], Pt [28], Cu [29] and Pd [30] Carbon ink (ACHESON, Singapore) was diluted in diethylene glycol monobutyl ether (MERCK, Germany) before manually printed on a PVC substrate sheet. Commercial grade acetone was used as cleaning solvent for carbon ink.…”

Section: Introductionmentioning

confidence: 99%

Cost-effective flow injection amperometric system with metal nanoparticle loaded carbon nanotube modified screen printed carbon electrode for sensitive determination of hydrogen peroxide

Reanpang

Themsirimongkon

Saipanya

et al. 2015

Talanta

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Highly stable and redox active nano copper species stabilized functionalized-multiwalled carbon nanotube/chitosan modified electrode for efficient hydrogen peroxide detection

Cited by 64 publications

References 45 publications

Modificaciones físicas, químicas y enzimáticas y sus efectos sobre las propiedades de las películas de quitosano

Modificaciones físicas, químicas y enzimáticas y sus efectos sobre las propiedades de las películas de quitosano

Electrochemical hydrogen peroxide sensor based on a glassy carbon electrode modified with nanosheets of copper-doped copper(II) oxide

Cost-effective flow injection amperometric system with metal nanoparticle loaded carbon nanotube modified screen printed carbon electrode for sensitive determination of hydrogen peroxide

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