A new approach to in-situ uniform growth of Fe3O4 nanoparticles over thermally exfoliated rGO sheet for the non-enzymatic and enzymatic detection of glucose

Ghosh, Anamika; Ganguly, Dipsikha; Ramaprabhu, Sundara

doi:10.1016/j.jelechem.2021.115386

Cited by 13 publications

(4 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Before OER, deconvoluted O 1s spectra reveal three peaks at 530.3, 531.9, and 533.7 eV which is attributed to M−O/O−H (M�active metal site), surface-adsorbed hydroxyl (M−OH) or C�O (functional groups of CNT surface), and adsorbed water molecule or C−OH (functional groups of CNT surface), respectively. 46,47 Post-OER intensity of an obvious increase in the M−O bond (530.7 eV) suggests conversion of CoFePBA into hydroxides or oxyhydroxides, while enhanced M-OH (532.2 eV) is expected due to adsorption of −OH molecules in alkaline electrolyte. Further before OER, high-resolution N 1s (Figure 6f) reveals a strong peak at 400.8 eV, which is designated to −CN coordination, as well as this may also indicate pyrrolic N. Presence of pyridinic N is also confirmed by the peak at 398.9 eV.…”

Section: Electrochemical Overall Seawater Splittingmentioning

confidence: 99%

CoFePBA Nanosheets on Carbon Nanotubes Coupled with Nickel-Encapsulated Carbon Tubules for Efficient and Highly Stable Overall Seawater Electrolysis

Ghosh

Fathima

Ganguly

et al. 2023

ACS Appl. Energy Mater.

Self Cite

View full text Add to dashboard Cite

The generation of H 2 by seawater electrolysis is limited by anodic chlorine corrosion and sluggish cathodic hydrogen evolution reaction (HER). Here, we report a simple approach for developing cobalt iron (CoFe)-based Prussian blue analogue with a nitrogen-doped carbon nanotube composite (CoFePBA/NCNT) and nickel-encapsulated carbon tubules (Ni/NCT) as oxygen evolution reaction (OER) and HER catalysts for overall seawater electrolysis utilizing graphite felt or carbon paper as the catalyst substrate, thus avoiding chlorine corrosion of the metal substrate. Instead of a commonly known hydrothermal method, a simple brush coating method was employed for catalyst coating which is feasible for large-scale electrolyzer fabrication. Our developed electrolyzer has shown a low overall seawater splitting voltage of 1.71 V and a good stability of 50 h in seawater with excellent selectivity for OER over hypochlorite formation at room temperature (26 °C). High OER activity is attributed to abundant catalytic sites provided by interconnected CoFePBA nanosheets and high intrinsic catalytic activity. Moreover, suppressed hypochlorite formation and corrosion resistance resulting from the synergistic effect of CoFePBA and NCNT make CoFePBA/NCNT||Ni/NCT a potential candidate for seawater electrolyzers. Our work paves a way to demonstrate seawater electrolyzer performance with nonprecious catalysts on a nonmetallic support.

show abstract

Section: Electrochemical Overall Seawater Splittingmentioning

confidence: 99%

CoFePBA Nanosheets on Carbon Nanotubes Coupled with Nickel-Encapsulated Carbon Tubules for Efficient and Highly Stable Overall Seawater Electrolysis

Ghosh

Fathima

Ganguly

et al. 2023

ACS Appl. Energy Mater.

Self Cite

View full text Add to dashboard Cite

show abstract

“…However, the direct introduction of Fe 3 O 4 particles into the composites by co-blending in most of the reported literature is prone to induce severe aggregation between magnetic particles, which will weaken the properties of composites . Therefore, in situ growth of magnetic particles is considered to alleviate the undesired aggregation between particles, which also contributes to improving the stability of the composite and the bonding between the filler and the matrix, as well as simplifying the preparation process and reducing the cost of the composite. − Liu et al obtained Fe 3 O 4 /carbon foam composites by in situ growth of Fe 3 O 4 nanoparticles on the carbonaceous skeleton surface of carbon foam via a combination of hydrothermal and annealing treatments. The results demonstrated that the agglomeration of Fe 3 O 4 particles was successfully reduced, and the introduction of Fe 3 O 4 particles also effectively improved the EMI SE of the composites .…”

Section: Introductionmentioning

confidence: 99%

In Situ Growth of Fe₃O₄ Nanoparticles in Poly(arylene ether nitrile)/Graphene/Carbon Nanotube Foams for Electromagnetic Interference Shielding

Zhang

Wang

et al. 2023

ACS Appl. Nano Mater.

View full text Add to dashboard Cite

Due to the growing severity of electromagnetic radiation pollution, effective and absorption-dominated electromagnetic shielding materials must be developed. In this study, poly(arylene ether nitrile)/ graphene/carbon nanotube (PEN/G/CNT) composite foam was prepared by nonsolvent induced phase separation, and Fe 3 O 4 particles were grown in situ by co-precipitation method, obtaining PEN/G/ CNT/Fe 3 O 4 (GCF) composite foams. The successful incorporation of magnetic Fe 3 O 4 particles was demonstrated by the scanning electron microscope images and the hysteresis loops, which was proved to effectively reduce the impedance mismatch and enhance the dielectric losses and magnetic losses of the composite foams, resulting in improved absorption and reduced secondary electromagnetic pollution. The electromagnetic interference shielding effectiveness (EMI SE) of GCF composite foams rose with the increase of Fe 3 O 4 content and GCF with the Fe 3 O 4 concentration of about 3.55 wt % showed the highest EMI SE of around 38 dB and the highest absorption ratio of about 94%. This effort provides a feasible and effective pathway for the fabrication of lightweight, easily scalable, heat-resistant, and absorption-dominated EMI shielding materials.

show abstract

“…The levels of glucose, the primary source of energy in the body, are indicative of multiple lifethreatening conditions such as diabetes, cardiovascular diseases, renal diseases, dental problems, and much more. 10,11 L-Lactate, the product of anaerobic glucose metabolism (glycolysis), is a marker for hypoxia and cardiac diseases. It is specifically of great importance in sports medicine, wherein higher lactate levels can be detrimental to athletes' health.…”

mentioning

confidence: 99%

“…), electrochemical sensors have been found to be most promising in terms of selectivity and sensitivity. 10 These sensors have the advantage of being miniaturizable and provide reliable detection within seconds, making it highly suitable for point-of-care applications. All of the commercial biosensors for glucose and lactate (by Abott, Roche, LifeScan, Nova biomedical, LactatePro etc.)…”

mentioning

confidence: 99%

Effect of Coordinated Solvent Molecules in Cu-MOF on Enzyme Free Sensing of Glucose and Lactate in Physiological pH

Ramaprabhu

Ghosh

Fathima

2022

J. Electrochem. Soc.

Self Cite

View full text Add to dashboard Cite

Developing a nonenzymatic sweat sensor for selective determination of glucose and lactate holds great significance in clinical diagnostics. Among various catalysts, transition metal-based metal-organic frameworks (MOF) have recently drawn more attention due to their tunable porosity and enhanced electrocatalytic activity. The presence of solvent molecule in the framework can influence both structural and electrochemical properties. In the present work, Copper-terephthalate (CuBDC) MOF was synthesized in a solvothermal method with different time durations. The effect of coordinated solvent molecules on the metal centre on structural and electrocatalytic properties was systematically investigated using various characterization techniques. As most of the copper-based composites reported so far showed performance in an alkaline medium, we demonstrate the detection of glucose and lactate in a neutral medium that enables direct analyte measurement from the body fluid. Electrochemical studies indicate that the solvated structure shows superior sensitivity to the desolvated MOF for glucose and lactate. The high sensitivity of solvated MOF is attributed to the favourable solvent exchange mechanism and ion diffusion through the channels of MOF. Furthermore, CuBDC12E and CuBDC48E show negligible interference toward competing analytes. The proposed sensor also exhibits good sensing performance in artificial sweat, making it suitable for a non-invasive, practical sweat sensor.

show abstract

A new approach to in-situ uniform growth of Fe3O4 nanoparticles over thermally exfoliated rGO sheet for the non-enzymatic and enzymatic detection of glucose

Cited by 13 publications

References 38 publications

CoFePBA Nanosheets on Carbon Nanotubes Coupled with Nickel-Encapsulated Carbon Tubules for Efficient and Highly Stable Overall Seawater Electrolysis

CoFePBA Nanosheets on Carbon Nanotubes Coupled with Nickel-Encapsulated Carbon Tubules for Efficient and Highly Stable Overall Seawater Electrolysis

In Situ Growth of Fe₃O₄ Nanoparticles in Poly(arylene ether nitrile)/Graphene/Carbon Nanotube Foams for Electromagnetic Interference Shielding

Effect of Coordinated Solvent Molecules in Cu-MOF on Enzyme Free Sensing of Glucose and Lactate in Physiological pH

Contact Info

Product

Resources

About

A new approach to in-situ uniform growth of Fe3O4 nanoparticles over thermally exfoliated rGO sheet for the non-enzymatic and enzymatic detection of glucose

Cited by 13 publications

References 38 publications

CoFePBA Nanosheets on Carbon Nanotubes Coupled with Nickel-Encapsulated Carbon Tubules for Efficient and Highly Stable Overall Seawater Electrolysis

CoFePBA Nanosheets on Carbon Nanotubes Coupled with Nickel-Encapsulated Carbon Tubules for Efficient and Highly Stable Overall Seawater Electrolysis

In Situ Growth of Fe3O4 Nanoparticles in Poly(arylene ether nitrile)/Graphene/Carbon Nanotube Foams for Electromagnetic Interference Shielding

Effect of Coordinated Solvent Molecules in Cu-MOF on Enzyme Free Sensing of Glucose and Lactate in Physiological pH

Contact Info

Product

Resources

About

In Situ Growth of Fe₃O₄ Nanoparticles in Poly(arylene ether nitrile)/Graphene/Carbon Nanotube Foams for Electromagnetic Interference Shielding