The Sensitive and Selective Enzyme-Free Electrochemical H2O2 Sensor Based on rGO/MnFe2O4 Nanocomposite

Rani, G. Jenita; Saravanan, J.; Sheet, Sunirmal; Rajan, M. A. Jothi; Lee, Yang Soo; Balasubramani, A.; kumar, G. Gnana

doi:10.1007/s12678-017-0418-2

Cited by 18 publications

(11 citation statements)

References 44 publications

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“…Through using rGO doped with manganese ferrite (MnFe 2 O 4 ) nanoparticles, Rani et al developed a non-enzymatic amperometric sensor for H 2 O 2 determination. They reported on LODs of 0.35 μM and sensitivity of 1180 μA mM –1 cm –2 for H 2 O 2 oxidation …”

Section: Sensing Applicationsmentioning

confidence: 99%

Electrically-Transduced Chemical Sensors Based on Two-Dimensional Nanomaterials

et al. 2019

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Electrically−transduced sensors, with their simplicity and compatibility with standard electronic technologies, produce signals that can be efficiently acquired, processed, stored, and analyzed. Two dimensional (2D) nanomaterials, including graphene, phosphorene (BP), transition metal dichalcogenides (TMDCs), and others, have proven to be attractive for the fabrication of high−performance electricallytransduced chemical sensors due to their remarkable electronic and physical properties originating from their 2D structure. This review highlights the advances in electricallytransduced chemical sensing that rely on 2D materials. The structural components of such sensors are described, and the underlying operating principles for different types of architectures are discussed. The structural features, electronic properties, and surface chemistry of 2D nanostructures that dictate their sensing performance are reviewed. Key advances in the application of 2D materials, from both a historical and analytical perspective, are summarized for four different groups of analytes: gases, volatile compounds, ions, and biomolecules. The sensing performance is discussed in the context of the molecular design, structure−property relationships, and device fabrication technology. The outlook of challenges and opportunities for 2D nanomaterials for the future development of electrically-transduced sensors is also presented.

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Section: Sensing Applicationsmentioning

confidence: 99%

Electrically-Transduced Chemical Sensors Based on Two-Dimensional Nanomaterials

et al. 2019

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“…These electrode modifications facilitated trace amount of H 2 O 2 detection discharged from Raw 264.7 cells. Rani et al [ 396 ] studied a nonenzymatic amperemetric H 2 O 2 sensing device using rGO–MnFe 2 O 4 doped NPs with 1180 µA m m −1 cm −2 sensitivity and 0.35 × 10 −6 m LOD.…”

Section: Applications Of the Group IV 2d Xenesmentioning

confidence: 99%

Sensing Applications of Atomically Thin Group IV Carbon Siblings Xenes: Progress, Challenges, and Prospects

Khan

Tareen

Wang

et al. 2020

Adv Funct Materials

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The 2D graphene (G) nanosheets (NSs) discovery is amound the foremost revolutionary incidents in materials science history. This discovery has stimulated huge attention in the study of other novel 2D materials (2DMs). This trend might be called modern day "alchemy," where the basic aim is to convert most of periodic table elements into G like 2D structures. Monoelemental, atomically thin 2DMs, called "Xenes" ("X" = group (III-VI)A elements, "ene" suffix that indicates one atom thick 2D layer of atoms) which are a newly invented family among nanomaterials. The number of predicted and experimentally synthesized 2D Xene materials of group IVA, i.e., G's siblings, has gained attention in nanosize devices. Such materials involve buckle structures that have recently been experimentally fabricated. The 2D Xene materials analog to G offer exciting potential for novel sensing applications. The group IVA Xenes, in cooperation with their ligandfunctionalized derivatives, arrange in a honeycomb lattice analogous to G but through a changeable degree of buckling. Their electronic structure ranges from trivial insulators passing via semiconductors with tunable gaps, to semimetallic, depending on substrate, chemical functionalization, and strain. In this review, different potential synthesis methods for group IVA 2D Xenes are briefly presented. A brief overview of their properties obtained theoretically and experimentally is presented, and finally their potential sensing applications are discussed.

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“…All the MnFe 2 O 4 diffraction peaks were well preserved in rGO-MnFe 2 O 4 composite (FigureSI 1d) [20]. The nonexistence of reflection plane corresponding to rGO at 26.6°i ndicated the removal of oxygen labile group from graphene sheets during the formation of rGO-MnFe 2 O 4 [21,22]. The X-ray powder diffraction patterns of elemental sulfur are depicted inFigure SI 1e.…”

mentioning

confidence: 92%

“…[20] The nonexistence of reflection plane corresponding to rGO at 26.6°i ndicated the removal of oxygen labile group from graphene sheets during the formation of rGO-MnFe 2 O 4 . [21,22] The X-ray powder diffraction patterns of elemental sulfur are depicted in ) governed substantial role both as a reducing agent and as a solvent for the preparation. The alkaline surrounding developed by the C 2 H 3 NaO 2 induced the precipitation of Mn 2 + and Fe 3 + ions in the presence of ethylene glycol which respectively assisted in the formation of manganese(II) hydroxide and Iron(III) hydroxide that after the dehydration process were transposed to MnFe 2 O 4 nanocrystals.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Charge‐ Discharge Behaviour of MnFe₂O₄ laden Composite Cathode for Lithium‐Sulfur Batteries

Mathew

Rani

Jenis³

et al. 2021

ChemistrySelect

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The LiÀ S battery commercialization has been hampered owing to challenging problems such as poor conductivity of elemental sulfur, volume change upon cycling, and shuttling of lithium polysulfide between the electrodes. To conquer these issues, a sensible electrode structure design is crucial. The incorporation of carbonaceous materials and metal oxides has been identified as an effective tool to foster the electrochemical properties of LiÀ S batteries. In this work, to confine polysulfide shuttling and to improve the conductivity of sulfur, MnFe 2 O 4 -seated rGOsulfur composite was prepared and used as a cathode. The lithium-sulfur cell with MnFe 2 O 4 -seated rGO-sulfur composite cathode showed outstanding electrochemical performance delivering a discharge capacity of 1300 mAh g À 1 at 0.1 C-rate on its first cycle and a stable cycling was attained at 0.5 C-rate. In the composite cathode, each component functions for a specific reason: the rGO in the composite improves the conductivity of sulfur, while added-MnFe 2 O 4 not only confines polysulfides appreciably but also provides integrity to the cathode as evidenced by SEM analysis. The self-discharge studies showed that the LiÀ S cell with MnFe 2 O 4 was capable of retaining its charge even after 90 h which has overhead the earlier reports. The LiÀ S system with MnFe 2 O 4 -laden cathode material exhibited better electrochemical properties than the un-laden one.

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The Sensitive and Selective Enzyme-Free Electrochemical H2O2 Sensor Based on rGO/MnFe2O4 Nanocomposite

Cited by 18 publications

References 44 publications

Electrically-Transduced Chemical Sensors Based on Two-Dimensional Nanomaterials

Electrically-Transduced Chemical Sensors Based on Two-Dimensional Nanomaterials

Sensing Applications of Atomically Thin Group IV Carbon Siblings Xenes: Progress, Challenges, and Prospects

Enhanced Charge‐ Discharge Behaviour of MnFe₂O₄ laden Composite Cathode for Lithium‐Sulfur Batteries

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The Sensitive and Selective Enzyme-Free Electrochemical H2O2 Sensor Based on rGO/MnFe2O4 Nanocomposite

Cited by 18 publications

References 44 publications

Electrically-Transduced Chemical Sensors Based on Two-Dimensional Nanomaterials

Electrically-Transduced Chemical Sensors Based on Two-Dimensional Nanomaterials

Sensing Applications of Atomically Thin Group IV Carbon Siblings Xenes: Progress, Challenges, and Prospects

Enhanced Charge‐ Discharge Behaviour of MnFe2O4 laden Composite Cathode for Lithium‐Sulfur Batteries

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Enhanced Charge‐ Discharge Behaviour of MnFe₂O₄ laden Composite Cathode for Lithium‐Sulfur Batteries