Evaluating the origin of the electrocatalytic activity of multiwalled carbon nanotubes towards Vitamin D3 oxidation

Fathima, T. K. Sana; Ramaprabhu, Sundara

doi:10.1016/j.jelechem.2022.116215

Cited by 8 publications

(11 citation statements)

References 29 publications

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“…Vibration modes of NCNT within 1600− 1995 cm −1 correspond to C�O stretching vibrations of the −COOH group attached to the CNT surface. 36 The wavenumber region within 2100−2320 cm −1 probably corresponds to hydroxyl (O−H) stretch from the strongly hydrogen-bonded −COOH group. 36 The bare CoFePBA sample exhibits fingerprint vibration at 2078 cm −1 related to C�N vibration for cyanide-coordinated compounds.…”

Section: Resultsmentioning

confidence: 99%

“…36 The wavenumber region within 2100−2320 cm −1 probably corresponds to hydroxyl (O−H) stretch from the strongly hydrogen-bonded −COOH group. 36 The bare CoFePBA sample exhibits fingerprint vibration at 2078 cm −1 related to C�N vibration for cyanide-coordinated compounds. The broad hump of CoFePBA between 3300 and 3500 cm −1 corresponds to the vibration due to −OH of the coordinated H 2 O molecule inside the PBA structure.…”

Section: Resultsmentioning

confidence: 99%

“…Therefore, functional groups CoFePBA and CoFePBA/NCNT composites are characterized by FTIR spectra (Figure c). Vibration modes of NCNT within 1600–1995 cm –1 correspond to CO stretching vibrations of the −COOH group attached to the CNT surface . The wavenumber region within 2100–2320 cm –1 probably corresponds to hydroxyl (O–H) stretch from the strongly hydrogen-bonded −COOH group .…”

Section: Resultsmentioning

confidence: 99%

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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.

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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.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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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.

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“…The electro‐oxidation of vitamin D 3 was found to be unaffected by carbonaceous and metallic impurities. Good sensing performance in the 20–350 μM range and a LOD of 9.3 M was also shown by GCE modified with MWCNT [82] . Bora et al.…”

Section: Electrochemical Sensors Used To Measure Vitamin D3mentioning

confidence: 89%

“…Good sensing performance in the 20-350 μM range and a LOD of 9.3 M was also shown by GCE modified with MWCNT. [82] Bora et al designed an antibody-free, highly sensitive, carbonnanotube-based, highly responsive vitamin D 3 sensor. The sensor was delivering high performance in the concentration range of 0-10 nM, with a limit of detection of 16 pM.…”

Section: Electrochemical Sensors Based On Composite With Modified Ino...mentioning

confidence: 99%

Recent Point of Care (PoC) Electrochemical Testing Trends of New Diagnostics Platforms for Vitamin D

Kirazoğlu,

Benli

2023

ChemistrySelect

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Recent advancements in electrochemical sensors for the detection of vitamins, particularly vitamin D, have drawn a lot of attention due to their outstanding advantages of simplicity and high sensitivity. For the purpose of detecting vitamin D in this circumstance, recent research has focused on developing electrochemical sensors. Although there is always space for improvement, electrochemical sensors for vitamin D detection and its transformation into point‐of‐care devices have made great strides lately. For example, the development of innovative electrode materials that can increase sensitivity and selectivity continues to garner a lot of interest. New suggestions on adsorptive detections using vitamin D carriers like nanoclays or hydroxyapatite‐clay composites are being developed. These biosensors hold huge potential for the detection of cheap, disposable, and biodegradable solutions. Also, the biosensor could monitor the depletion of vitamin levels, providing a real‐time platform for the Internet of Medical Things, fifth‐generation wireless communications, and smartphone‐based electrochemical sensors. Currently, electrochemical sensors based on smartphones have been proposed to detect using various biomarkers for monitoring several changes in glucose, etc. We believe smartphone‐based electrochemical sensors and adsorptive sensing platforms provides a novel way toward point‐of‐care tests for identifying especially vitamin D deficiency and real‐time monitoring

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Insights into the post-combustion CO2 capture performance of zinc-based zeolitic imidazolate framework (ZIF8)-derived nanocomposites

Sana,

Ghosh,

Vijayan

et al. 2025

Advanced Powder Technology

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Evaluating the origin of the electrocatalytic activity of multiwalled carbon nanotubes towards Vitamin D3 oxidation

Cited by 8 publications

References 29 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

Recent Point of Care (PoC) Electrochemical Testing Trends of New Diagnostics Platforms for Vitamin D

Insights into the post-combustion CO2 capture performance of zinc-based zeolitic imidazolate framework (ZIF8)-derived nanocomposites

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