Scalable Production of Nickel Cobaltite Nanoplates using Solution-Processed Inks for OER Electrocatalysis

Urgunde, Ajay B.; Bahuguna, Gaurav; Dhamija, Anandita; Kamboj, Vipin; Gupta, Ritu

doi:10.1016/j.materresbull.2021.111380

Cited by 20 publications

(9 citation statements)

References 62 publications

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“…According to the previous reports, electron spin polarization could enhance the catalytic activity of OER, because the unique OER steps from singlet reactant to the triplet product (↑OO↑) call for a spin-selective electron transfer. 43–46 Furthermore, the Fe and Ni catalysts have excellent OER catalytic activity. It is worth noting here that Ni and Fe occupy different d-orbitals that determine the electron transfer rate and reaction thermodynamics, which are intrinsically dependent on the cation's spin state.…”

Section: Potential Factormentioning

confidence: 99%

One-pot synthesis of NiFe nanoarrays under an external magnetic field as an efficient oxygen evolution reaction catalyst

et al. 2023

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Section: Potential Factormentioning

confidence: 99%

One-pot synthesis of NiFe nanoarrays under an external magnetic field as an efficient oxygen evolution reaction catalyst

et al. 2023

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“…[ 84 ] ( g ) Cyclic Voltammogram of Ni-C4SH/Au mesh as working electrodes in the glucose of different concentrations at a scan rate of 50 mV s − 1 Figure adapted from ref [ 85 ] ( h ) LSV curves at 5 mV/s of Ni-Co oxide nanoplate Figure adapted from ref. [ 86 ] ( i ) Simultaneous measurements with increasing concentration of equimolar Dopamine and Uric Acid from 1 nM to 1000 μM, respectively (Figure adapted from ref [ 87 ]) …”

Section: Salient Applications Of 2d Materialsmentioning

confidence: 99%

2D materials: increscent quantum flatland with immense potential for applications

et al. 2022

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Quantum flatland i.e., the family of two dimensional (2D) quantum materials has become increscent and has already encompassed elemental atomic sheets (Xenes), 2D transition metal dichalcogenides (TMDCs), 2D metal nitrides/carbides/carbonitrides (MXenes), 2D metal oxides, 2D metal phosphides, 2D metal halides, 2D mixed oxides, etc. and still new members are being explored. Owing to the occurrence of various structural phases of each 2D material and each exhibiting a unique electronic structure; bestows distinct physical and chemical properties. In the early years, world record electronic mobility and fractional quantum Hall effect of graphene attracted attention. Thanks to excellent electronic mobility, and extreme sensitivity of their electronic structures towards the adjacent environment, 2D materials have been employed as various ultrafast precision sensors such as gas/fire/light/strain sensors and in trace-level molecular detectors and disease diagnosis. 2D materials, their doped versions, and their hetero layers and hybrids have been successfully employed in electronic/photonic/optoelectronic/spintronic and straintronic chips. In recent times, quantum behavior such as the existence of a superconducting phase in moiré hetero layers, the feasibility of hyperbolic photonic metamaterials, mechanical metamaterials with negative Poisson ratio, and potential usage in second/third harmonic generation and electromagnetic shields, etc. have raised the expectations further. High surface area, excellent young’s moduli, and anchoring/coupling capability bolster hopes for their usage as nanofillers in polymers, glass, and soft metals. Even though lab-scale demonstrations have been showcased, large-scale applications such as solar cells, LEDs, flat panel displays, hybrid energy storage, catalysis (including water splitting and CO2 reduction), etc. will catch up. While new members of the flatland family will be invented, new methods of large-scale synthesis of defect-free crystals will be explored and novel applications will emerge, it is expected. Achieving a high level of in-plane doping in 2D materials without adding defects is a challenge to work on. Development of understanding of inter-layer coupling and its effects on electron injection/excited state electron transfer at the 2D-2D interfaces will lead to future generation heterolayer devices and sensors.

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“…In previous report, we had developed Ni and Co oxide-based nanostructured electrodes for application in OER electrocatalysis. [24] Further, in this study, under optimized conditions, we have fabricated NiÀ Co oxide nanoplates on carbon cloth and printed graphite/Kapton substrates as biosensors which exhibit high sensitivity and fast response for simultaneous detection of DA and UA even in the presence of other interfering analytes. shows the ultrathin and highly-crystalline nanoplate-like structure with dominant 422 planes (1.65 Å) of the spinel (Figure 1d).…”

Section: Introductionmentioning

confidence: 98%

Nickel Cobaltite Nanoplate‐Based Electrochemical Sensing Platform from Printable Inks for Simultaneous Detection of Dopamine and Uric Acid

Urgunde

Dhamija

Gupta

2021

Chemistry An Asian Journal

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2D metal oxide-based nanomaterials have emerged as an exciting area of research owing to their rich electrochemical properties and diverse applications, including biosensors. In this work, we have synthesized ultra-thin Co 3 O 4 , NiO, and NiCo 2 O 4 nanostructures supported on a carbon cloth and printed graphite/Kapton substrates following thermal reduction of self-assembled metal alkanethiolates. These nanostructures act as a sensing platform for simultaneous detection of dopamine (DA) and uric acid (UA), important biological molecules in physiological and pathological tests. The ultrathin 2D nanoplates of NiCo 2 O 4 spinel formed in this study exhibit high electrochemical activity than pristine NiO and Co 3 O 4 . The electrochemical character-ization studies indicate that NiCo 2 O 4 possesses a high potential for DA and UA with a peak separation of ~140 mV, high sensitivity, and excellent selectivity. The low-cost and disposable, single-shot probe biosensors fabricated in this work possess a wide working range of 0.001-1000 μM with detection limits of 0.33 and 0.49 nM for DA and UA, respectively, with a practically achievable limit of quantification of ~1 nM. Multiple sensing electrodes are printed on graphite/Kapton all at once following this method with improved reproducibility for DA and UA sensing further extending the scope of work towards mass fabrication and practical usage.

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Scalable Production of Nickel Cobaltite Nanoplates using Solution-Processed Inks for OER Electrocatalysis

Cited by 20 publications

References 62 publications

One-pot synthesis of NiFe nanoarrays under an external magnetic field as an efficient oxygen evolution reaction catalyst

One-pot synthesis of NiFe nanoarrays under an external magnetic field as an efficient oxygen evolution reaction catalyst

2D materials: increscent quantum flatland with immense potential for applications

Nickel Cobaltite Nanoplate‐Based Electrochemical Sensing Platform from Printable Inks for Simultaneous Detection of Dopamine and Uric Acid

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