Functionalized graphene oxide–polypyrrole–chitosan (fGO–PPy–CS) modified screen-printed electrodes for non-enzymatic hydrogen peroxide detection

Akhtar, Muhammad Asim; Hayat, Akhtar; Iqbal, Naseer; Marty, Jean Louis; Nawaz, Mian Hasnain

doi:10.1007/s11051-017-4029-x

Cited by 13 publications

(6 citation statements)

References 54 publications

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“…32 Application of dopamine-modified nano GO carrier for anticancer drug delivery was reported by Kashanian et al 33 Additionally, the dual-functionalized GOs can be used in dental and orthopedic applications, 34 fillers, 35,36 and so on. 37,38 Most of the GO and fGOs reported could be regarded as an amphiphile with oxygen-containing hydrophilic surfaces and large hydrophobic carbon skeleton. They have distinct length scales, with the thickness similar to approximately a single atomic layer, and lateral dimension up to tens of micrometers.…”

Section: Introductionmentioning

confidence: 99%

“…Shahrabi et al discovered a 3-aminopropyltriethoxysilane functionalized GO, which can improve the adhesion strength and anticorrosion performance and cut down the cathodic delamination rate of epoxy coating effectively . Application of dopamine-modified nano GO carrier for anticancer drug delivery was reported by Kashanian et al Additionally, the dual-functionalized GOs can be used in dental and orthopedic applications, fillers, , and so on. , …”

Section: Introductionmentioning

confidence: 99%

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Correlation between Molecular Structure and Interfacial Properties of Edge or Basal Plane Modified Graphene Oxide

Yang

Zeng

2018

ACS Appl. Nano Mater.

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Although graphene oxide (GO) has been reported to be able to be edge functionalized or basal-plane functionalized separately, no research has been done on comparing both the molecular structure and interfacial properties of them. In this study, an alkyl amine was grafted to the epoxy group on the basal planes of GO (b-GO) and carboxyl group at the edges of GO (e-GO) separately by using different synthetic approach. With the combination of various molecular structure and morphology characterization methodologies, we proved that the reaction site for e-GO was only with the carboxyl group at the edge of GO and that for b-GO was epoxy group on the basal plane of GO, indicating that GO could be controllably functionalized (fGOs), and the structure of fGOs could be tuned. Study of the interfacial behavior of fGOs at liquid−liquid interface showed that the interfacial tension reducing capability of e-GO was broader than that of b-GO, and for alkyl oil phase, b-GO was slightly better than e-GO, and both were better than traditional nonionic surfactant. Study of the interfacial behavior of fGOs at liquid−solid interface demonstrated that, after absorption, b-GO arranged vertically on the metal surface, forming dense, compact, and strong film, while e-GO aligned horizontally to form loosely assembled film, resulting in higher interfacial shear strength than that of b-GO. Our results indicate the possibilities for tuning the interfacial properties of GO at both liquid−liquid and liquid−solid interfaces, which may be promising in the potential applications in controlled drug delivery, surface protection, absorption and separation, lubrication, nanocomposite, and catalyst fields.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Correlation between Molecular Structure and Interfacial Properties of Edge or Basal Plane Modified Graphene Oxide

Yang

Zeng

2018

ACS Appl. Nano Mater.

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“…The signal of CO gets weaken due to functionalized with NH group present in CS and PPy rings. [ 38 ] The absorption bands appearing at around 2890 and 2829 cm −1 can be attributed to CH symmetric and asymmetric stretching reported in CS. These bands are characteristics of polysaccharide and are found in other polysaccharides such as glucans, [ 39 ] carrageenans [ 40 ] , and xylan.…”

Section: Resultsmentioning

confidence: 97%

Synthesis, characterization, morphology, and adsorption studies of ternary nanocomposite comprising graphene oxide, chitosan, and polypyrrole

et al. 2020

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The present work reports the synthesis of a ternary nanocomposite GO‐CS‐PPy comprising of graphene oxide (GO), chitosan (CS), and polypyrrole (PPy). The ternary nanocomposite GO‐CS‐PPy was characterized by a variety of techniques like Fourier transform infrared spectroscopy, scanning electron microscopy (SEM), transmission electron microscopy (TEM), X‐ray diffraction analysis (XRD), thermogravimetric analysis, and differential thermal analysis. The in situ synthesis of ternary nanocomposite GO‐CS‐PPy was carried out in the presence of catalytic FeCl3. The SEM and TEM analyses reveal a clear transformation of GO into the nanocomposite form where the characteristic sheet‐like structure of the former was crushed and converted into small pieces of nonuniform size. Similarly, in the XRD, the diagnostic peak of GO is also shifted appreciably employing successful synthesis of ternary nanocomposite GO‐CS‐PPy. The thermal stability of the ternary nanocomposite GO‐CS‐PPy was also found to be enhanced as compared to the pristine GO, CS, and PPy individually. The ternary nanocomposite GO‐CS‐PPy was used as an efficient adsorbent for the removal of a popular anionic dye Congo red as well as for the removal of heavy metal ions like Cu2+ and Cd2+ from water. In both cases, the ternary nanocomposite GO‐CS‐PPy was found to be very effective and can be commercialized in near future after further comprehensive studies.

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“…In another example, screen-printed carbon electrodes were modified by a nanocomposite of graphene oxide-polypyrrole-chitosan and used as a hydrogen peroxide biosensor. The nanocomposite reduced the H 2 O 2 with high sensitivity, repeatability and reproducibility [246] . Enzymebased biosensors for the detection of glucose can be repurposed for the detection of H 2 O 2 and were described in the previous section.…”

Section: Biosensors For Hydrogen Peroxide and Phenolic Compoundsmentioning

confidence: 99%

Electroconductive multi-functional polypyrrole composites for biomedical applications

Zare

Agarwal

Zarepour

et al. 2021

Applied Materials Today

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Functionalized graphene oxide–polypyrrole–chitosan (fGO–PPy–CS) modified screen-printed electrodes for non-enzymatic hydrogen peroxide detection

Cited by 13 publications

References 54 publications

Correlation between Molecular Structure and Interfacial Properties of Edge or Basal Plane Modified Graphene Oxide

Correlation between Molecular Structure and Interfacial Properties of Edge or Basal Plane Modified Graphene Oxide

Synthesis, characterization, morphology, and adsorption studies of ternary nanocomposite comprising graphene oxide, chitosan, and polypyrrole

Electroconductive multi-functional polypyrrole composites for biomedical applications

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