Sensitivity enhancement in rGO/Mn3O4 hybrid nanocomposites: A modified glassy carbon electrode for the simultaneous detection of dopamine and uric acid

Vinodhkumar, G.; Lokeswarareddy, S.; Sekar, C.; Potheher, I. Vetha; Péter, Á.

doi:10.1016/j.synthmet.2021.116859

Cited by 12 publications

(2 citation statements)

References 59 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Interestingly, pure hausmanite phase was obtained in the case of CNT-N@Mn 3 O 4 at 100 °C, without requiring any post -thermal treatment step, which contrasts with typical synthetic routes reported in the literature to yield the hausmannite phase in carbon-based hybrid materials, including hydrothermal/solvothermal (160–180 °C) and coprecipitation methods. − …”

Section: Resultsmentioning

confidence: 85%

Fabrication of CNT-N@Manganese Oxide Hybrid Nanomaterials through a Versatile One-Pot Eco-Friendly Route toward Engineered Textile Supercapacitors

Teixeira,

Costa,

Guedes

et al. 2024

ACS Appl. Eng. Mater.

View full text Add to dashboard Cite

The expansion of the Internet of Things market and the proliferation of wearable technologies have generated a significant demand for textile-based energy storage systems. This work reports the engineered design of hybrid electrode nanomaterials of N-doped carbon nanotubes (CNT-N) functionalized with two types of manganese oxides (MOs)�birnessite (MnO 2 ) and hausmannite (Mn 3 O 4 )�and their application in solid-state textilebased hybrid supercapacitors (SCs). A versatile citric acid-mediated eco-friendly one-pot aqueous precipitation process is proposed for the fabrication of the hybrids. Remarkably, different types of MOs were obtained by simply changing the reaction temperature from room temperature to 100 °C, without any post-thermal treatment. Asymmetric textile SCs were developed using cotton fabrics coated with CNT-N and the hybrids as textile electrodes, and poly(vinyl) alcohol/orthophosphoric acid as the solid-gel electrolyte. The asymmetric devices presented enhanced energy storage performance relative to the symmetric device based on CNT-N and excellent cycling stability (>96%) after 8000 charge/discharge cycles owing to synergistic effects between CNT-N and the MOs, which endowed nonfaradaic and pseudocapacitive features to the SCs. The asymmetric SC based on CNT-N@MnO 2 featured 47% higher energy density and comparable power density to the symmetric CNT-N-based device (8.70 W h cm −2 at 309.01 μW cm −2 vs. 5.93 W h cm −2 at 346.58 μW cm −2 ). The engineered hybrid CNT-N@MO nanomaterials and the eco-friendly citric acid-assisted one-pot precipitation route open promising prospects not only for energy storage, but also for (photo)(electro)catalysis, wastewater treatment, and (bio)sensing.

show abstract

Section: Resultsmentioning

confidence: 85%

Fabrication of CNT-N@Manganese Oxide Hybrid Nanomaterials through a Versatile One-Pot Eco-Friendly Route toward Engineered Textile Supercapacitors

Teixeira,

Costa,

Guedes

et al. 2024

ACS Appl. Eng. Mater.

View full text Add to dashboard Cite

show abstract

“…Another example of amplified electrocatalytic activity towards the simultaneous detection of DA and UA is demonstrated by using the nanocomposite of reduced graphene oxide nano-octahedral shaped Mn 3 O 4 (rGO/Mn 3 O 4 ) [66]. Among different combinations between graphene and Mn 3 O 4 , the molar ratio of 1/10 in a nanocomposite of rGO/Mn 3 O 4 exhibits enhanced electrocatalytic activity in terms of peak current response and shift in potential, with well separated oxidation peaks of DA and UA.…”

Section: Graphene/metal Oxidementioning

confidence: 99%

Review—Recent Progress in Graphene Based Modified Electrodes for Electrochemical Detection of Dopamine

et al. 2022

View full text Add to dashboard Cite

Graphene and its derivatives have been widely used for the electrochemical detection of dopamine (DA) neurotransmitter, thanks to its high surface area and excellent conductivity. Modified graphene and graphene-based nanocomposites have shown improved catalytic activity towards DA detection. Various modification approaches have been taken, including heteroatom doping and association with other nanomaterials. This review summarizes and highlights the recent advances in graphene-based electrodes for the electrochemical detection of DA. It also aims to provide an overview of the advantages of using polymer as a linker platform to form graphene-based nanocomposites applied to electrochemical DA sensors.

show abstract

Facile Synthesis of Reduced Graphene Oxide/Mn₃O₄ Nanocomposite as a Platform for the Voltammetric Determination of Tramadol

Sajjadi,

Beitollahi,

Garkani Nejad

2024

ChemistrySelect

View full text Add to dashboard Cite

We describe a simple hydrothermal method for preparing a nanocomposite of reduced graphene oxide/Mn3O4 (rGO/Mn3O4), and its use in electrochemically detecting tramadol (TRA). The sensor was constructed by using a glassy carbon electrode modified with a rGO/Mn3O4 nanocomposite (rGO/Mn3O4/GCE) as an electro‐catalyst. The electrochemical properties of TRA at rGO/Mn3O4/GCE were studied using cyclic voltammetry (CV), chronoamperometry, and differential pulse voltammetry (DPV) in a phosphate buffer solution (PBS) with a pH of 8.0. The oxidation peak currents of TRA on rGO/Mn3O4/GCE increased compared to the bare GCE. This enhancement was attributed to the high surface area and excellent electron transfer performance of the rGO/Mn3O4 nanocomposite on the surface of the electrode. Under optimal conditions, the oxidation peak currents exhibited a linear increase with the concentration of TRA within the range of 0.5 to 700.0 μM, and a detection limit (LOD) of 0.16 μM was achieved. This study has shown that the rGO/Mn3O4/GCE can effectively be used to analyze TRA in real specimens.

show abstract

Sensitivity enhancement in rGO/Mn3O4 hybrid nanocomposites: A modified glassy carbon electrode for the simultaneous detection of dopamine and uric acid

Cited by 12 publications

References 59 publications

Fabrication of CNT-N@Manganese Oxide Hybrid Nanomaterials through a Versatile One-Pot Eco-Friendly Route toward Engineered Textile Supercapacitors

Fabrication of CNT-N@Manganese Oxide Hybrid Nanomaterials through a Versatile One-Pot Eco-Friendly Route toward Engineered Textile Supercapacitors

Review—Recent Progress in Graphene Based Modified Electrodes for Electrochemical Detection of Dopamine

Facile Synthesis of Reduced Graphene Oxide/Mn₃O₄ Nanocomposite as a Platform for the Voltammetric Determination of Tramadol

Contact Info

Product

Resources

About

Sensitivity enhancement in rGO/Mn3O4 hybrid nanocomposites: A modified glassy carbon electrode for the simultaneous detection of dopamine and uric acid

Cited by 12 publications

References 59 publications

Fabrication of CNT-N@Manganese Oxide Hybrid Nanomaterials through a Versatile One-Pot Eco-Friendly Route toward Engineered Textile Supercapacitors

Fabrication of CNT-N@Manganese Oxide Hybrid Nanomaterials through a Versatile One-Pot Eco-Friendly Route toward Engineered Textile Supercapacitors

Review—Recent Progress in Graphene Based Modified Electrodes for Electrochemical Detection of Dopamine

Facile Synthesis of Reduced Graphene Oxide/Mn3O4 Nanocomposite as a Platform for the Voltammetric Determination of Tramadol

Contact Info

Product

Resources

About

Facile Synthesis of Reduced Graphene Oxide/Mn₃O₄ Nanocomposite as a Platform for the Voltammetric Determination of Tramadol