Characterization of an hrp-aox-polyaniline-graphite composite biosensor

Santana, Ana Carolina O.; Southgate, Erica F.; Mendes, João Paulo B. G.; Dweck, Jo; Alhadeff, Eliana M.; Ramirez, Ninoska Isabel Bojorge

doi:10.5599/jese.2014.0057

Cited by 8 publications

(8 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Cobalt nanoparticles deposited on the stainless steel substrates are efficient catalysts for the growth of MWCNT in good alignment by the chemical vapor deposition of ethylenediamine. While the thickness of the cobalt film determines the diameter and density of the vertically aligned MWCNT, the CVD reaction time controls the length of nanotubes [22]. Figure 1 displays the SEM images of MWCNT synthesized at 750 °C for 30 min on a stainless steel substrate at two different magnifications.…”

Section: Influence Of Different Operating Parameters On the Growth Ofmentioning

confidence: 99%

Synthesis and characterization of a novel non-enzymatic glucose biosensor based on polyaniline/zinc oxide/multi-walled carbon nanotube ternary nanocomposite

Mohajeri

Dolati²,

Yazdanbakhsh³

2019

J. Electrochem. Sci. Eng.

View full text Add to dashboard Cite

Novel polyaniline/zinc oxide/multi-walled carbon nanotube (PANI/ZnO/MWCNT) ternary nanocomposite was fabricated as a non-enzymatic glucose biosensor. Thermal chemical vapor deposition (CVD) process was employed to synthesize vertically aligned MWCNTs on stainless steel substrates coated by Co catalyst nanoparticles. In order to fabricate sensitive and reliable MWCNT-based biosensors, nanotubes density and alignment were adjusted by varying the CVD reaction time and cobalt sulfate concentration. The fabricated nanotubes were modified by ZnO particles through the potentiostatic electrodeposition technique. Optimal electrodeposition potential, electrodeposition time, and electrolyte concentration values were determined. The optimized ZnO/MWCNT nanocomposite was reinforced by polyaniline (PANI) nanofibers through the potential cycling technique, and the morphology, elemental composition, and phase structure of the fabricated nanocomposites were characterized by scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX), and X-ray diffraction (XRD), respectively. The sensing mechanism of the PANI/ZnO/MWCNT electrode for the electrochemical detection of glucose was investigated, and the limit of detection and sensitivity values of the designed sensor were determined. The fast response time of the ternary nanocomposite-based sensor as well as its satisfactory stability and reproducibility, makes it a promising candidate for non-enzymatic detection of glucose in biomedical, environmental, and industrial applications.

show abstract

Section: Influence Of Different Operating Parameters On the Growth Ofmentioning

confidence: 99%

Synthesis and characterization of a novel non-enzymatic glucose biosensor based on polyaniline/zinc oxide/multi-walled carbon nanotube ternary nanocomposite

Mohajeri

Dolati²,

Yazdanbakhsh³

2019

J. Electrochem. Sci. Eng.

View full text Add to dashboard Cite

show abstract

“…In previously reported paper based platforms, carbon-based electrode materials, expensive equipment, and time-consuming and complex additional redox co-factor based electrochemistry for the immobilization of bio-electrodes were used for the development of miniaturized power devices [7][8][9][10][11]. In addition, there are reports about EBFC that can harvest energy from human physiological fluidics such as blood, saliva, serum, urine and some commercial beverages [12][13][14][15][16][17]. However, the utilization of such fuels is expensive and usually needs the complicated extraction methods.…”

Section: Introductionmentioning

confidence: 99%

Microfluidic paper based membraneless biofuel cell to harvest energy from various beverages

Goel

2019

J. Electrochem. Sci. Eng.

View full text Add to dashboard Cite

The present work establishes the cost-effective and miniature microfluidic self-pumping paper based enzymatic biofuel cell (P-EBFC). The developed Y-shaped P-EBFC consists of buckeye composite multiwall carbon nanotube (MWCNT) buckypaper (BP) based bio-anode and bio-cathode that were immobilized with electro-biocatalytic enzymes glucose oxidase (GOx) and laccase, respectively. The electrocatalytic activity of enzymes on electrode surface is confirmed using cyclic voltammetry (CV) technique. Such immobilized bio-anode and bio-cathode show exquisite electrocatalytic activity towards glucose and O2, respectively. Most appealingly, P-EBFC can directly harvest energy from widely available beverages containing glucose such as Mountain Dew, Pepsi, 7up and fresh watermelon juice. This could provide potential application of P-EBFC as a portable power device.

show abstract

“…Biosensor-based nanomaterials, which represent recognition, pathogenic diagnosis, and environmental monitoring (Zhang, Guo and Cui, 2009;Narayanan, 2012;Santana et al, 2014;Alhadeff and Bojorge, 2011).…”

Section: Introductionmentioning

confidence: 99%

Characterization and Evaluation of Silver-Nanoparticle-Incorporated in Composite Graphite Aiming at their Application in Biosensors

Santos

Ribeiro

Bosco

et al. 2017

Braz. J. Chem. Eng.

View full text Add to dashboard Cite

-Biosensors based on nanomaterial composites have been investigated for their potential to function as high sensitivity signal response devices. In the present study, we report the fabrication of silver nanoparticles (AgNPs) on a graphite epoxy composite electrode (GEC) and mixed with the polyaniline (a conductive emeraldine salt form polymer) composite electrode (AgNPs/PANI/GEC), in order to compare the performance of the generated electrochemical response signals. Cyclic voltammetry tests were conducted to compare the quality and intensity of signals from the different prepared electrodes. Tests for the AgNPs/PANI/GEC electrodes were made with and without the enzymes alcohol oxidase and horseradish peroxidase immobilized on the composite surface. The prepared AgNPs/PANI/GEC nanocomposite was evaluated by thermal analysis. Scanning electron microscopy images and EDX were obtained for characterization of the electrode surface morphology. Square wave voltammetry techniques were then employed for ethanol analysis with the AOX/HRP/AgNPs/PANI/GEC biosensor achieving good results in a range of 0.37M to 0.65 M.

show abstract

Characterization of an hrp-aox-polyaniline-graphite composite biosensor

Abstract: Nowadays there is an increasing demand to develop new and robust biosensors in order

Cited by 8 publications

References 35 publications

Synthesis and characterization of a novel non-enzymatic glucose biosensor based on polyaniline/zinc oxide/multi-walled carbon nanotube ternary nanocomposite

Synthesis and characterization of a novel non-enzymatic glucose biosensor based on polyaniline/zinc oxide/multi-walled carbon nanotube ternary nanocomposite

Microfluidic paper based membraneless biofuel cell to harvest energy from various beverages

Characterization and Evaluation of Silver-Nanoparticle-Incorporated in Composite Graphite Aiming at their Application in Biosensors

Contact Info

Product

Resources

About