Increasing the efficiency of reduced graphene oxide obtained via high temperature electrospun calcination process for the electrochemical detection of dopamine

Gupta, Neeraj; Kaur, Gun Anit; Sharma, Vinit; Nagraik, Rupak; Shandilya, Mamta

doi:10.1016/j.jelechem.2021.115904

Cited by 21 publications

(7 citation statements)

References 40 publications

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“…Both can significantly catalyze the oxidation process thereby leading to increase in rate of electron transfer in DA. The LOD of DA as calculated from CV study was observed to be 1.11 μM and 1.23 μM for rGO-500/SPCE and rGO-600/SPCE respectively. On the other hand, LOD as obtained from DPV study was found to be 0.7 μM and 0.9 μM for rGO-500/SPCE and rGO-600/SPCE respectively.…”

Section: Sensing Probes and Chemical Transformations Through Metal-fr...mentioning

confidence: 96%

“…Optimization and parameter adjustments might be necessary based on the desired outcomes and the characteristics of the electrospun material . The rGO quantum dots were recently prepared by this method in our group …”

Section: Incorporation Of Key Active Sites In Metal-free Carbon Mater...mentioning

confidence: 99%

“…Reduced graphene oxide (rGO) has garnered considerable interest for the fabrication of electrochemical sensors. Two highly efficient rGO catalysts (rGO-500/SPCE and rGO-600/ SPCE) were prepared via electrospun calcination 74 method. The prepared catalysts were used for the electrochemical detection of neurotransmitter dopamine using screen printed carbon electrodes (SPCEs).…”

Section: ■ Incorporation Of Key Active Sites In Metal-free Carbon Mat...mentioning

confidence: 99%

“…73 The rGO quantum dots were recently prepared by this method in our group. 74 Enhancement in Catalytic Properties of Carbon Materials through Nanocomposites. The catalytic properties of carbon materials, such as carbon nanotubes, graphene, and activated carbon can be enhanced through the formation of composites with other metal-free materials.…”

Section: ■ Incorporation Of Key Active Sites In Metal-free Carbon Mat...mentioning

confidence: 99%

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Metal-Free Carbon-Based Nanomaterials: Insights from Synthesis to Applications in Sustainable Catalysis

Jaryal,

Villa,

Gupta

2023

ACS Sustainable Chem. Eng.

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The development of cutting-edge catalysts is critical in material science for sustainable development. Though, metals have always been used in catalysis for enabling essential chemicals, but their use is not considered sustainable owing to the high cost, toxicity, and poor durability. Nevertheless, the modern focus has shifted towards metal free materials due to their leading role in sustainable development. Carbon-based nanomaterials have become focus of researchers over last 30 years and are used either as a catalyst support or metal-free catalyst in various chemical conversions. They are highly anticipated as state-of-the-art materials due to high specific surface area, high conductivity, and tunable functional groups. This account summarizes various strategies proposed by our group to design metal-free carbon catalysts for electrochemical sensing, biomass valorization, and synthesis of value-added chemicals. Also, "metal-free" point-of-care devices are fabricated to provide affordable healthcare services to the user end. The materials are designed using graphitic carbon nitride, reduced graphene oxide, Janus 2D carbon nanomaterials, ultradispersed diamonds, and carbon nanotubes. Their efficacy can be improved by building composites with metal-free materials and incorporating defects. Finally, we share some knowledge and insights regarding current challenges and future perspectives in this emerging field.

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Section: Sensing Probes and Chemical Transformations Through Metal-fr...mentioning

confidence: 96%

Section: Incorporation Of Key Active Sites In Metal-free Carbon Mater...mentioning

confidence: 99%

Section: ■ Incorporation Of Key Active Sites In Metal-free Carbon Mat...mentioning

confidence: 99%

Section: ■ Incorporation Of Key Active Sites In Metal-free Carbon Mat...mentioning

confidence: 99%

See 2 more Smart Citations

Metal-Free Carbon-Based Nanomaterials: Insights from Synthesis to Applications in Sustainable Catalysis

Jaryal,

Villa,

Gupta

2023

ACS Sustainable Chem. Eng.

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“…In this regard, polymeric nanocomposite nanofibers have been tested [69]. Graphene-reinforced polymeric nanofibers have been used to design nanocomposite membranes [70][71][72][73].…”

Section: Polymer/graphene Nanofibers For Nanocomposite Membranesmentioning

confidence: 99%

Polymer/Graphene Nanocomposite Membranes: Status and Emerging Prospects

Kausar

Bocchetta

2022

J. Compos. Sci.

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Graphene is a unique nanocarbon nanomaterial, frequently explored with polymeric matrices for technical purposes. An indispensable application of polymer/graphene nanocomposites has been observed for membrane technology. This review highlights the design, properties, and promising features of the polymer/graphene nanomaterials and nanocomposite membranes for the pervasion and purification of toxins, pollutants, microbials, and other desired contents. The morphology, pore size, pore structure, water flux, permeation, salt rejection, and other membrane properties are examined. Graphene oxide, an important modified form of graphene, is also utilized in nanocomposite membranes. Moreover, polymer/graphene nanofibers are employed to develop high-performance membranes for methodological purposes. The adaptability of polymer/graphene nanocomposites is observed for water management and purification technologies.

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Coconut Husk Waste‐Derived Nitrogen‐Doped Mesoporous Carbon Nanomaterial as an Efficient and Sustainable Supercapacitor

Sharma,

Rana,

Kumar

et al. 2024

Energy Tech

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Sustainability and waste management are equally important in the era of growing energy demands. This study focuses on integrating strategies that balance energy efficiency, reduce waste generation, and promote sustainable practices. The coconut husk is processed and converted into mesoporous carbon nanomaterial through hydrothermal‐assisted thermal annealing. Nitrogen is doped through melamine to increase reactive sites and hence the catalytic activity. The sphere‐like morphology was confirmed by field emission scanning electron microscope and high‐resolution transmission electron microscope images indicate a carbon dot‐like structure. The high Brunauer‐Emmett‐Teller surface area achieved for this nanostructure is 1383.40 m2 g−1, with pore width and volume at 2.2660 nm and 0.2995 cm3 g−1, respectively. The as‐synthesized nanostructure is explored for its electrochemical performance as electrodes for the supercapacitor application, where materials achieve a wide potential window (−1.4 to 1.4 V) in the minimum time of 50 s at the current density of 0.6 A g−1. Moreover, the highest specific capacitance obtained from the nanomaterial is 115.39 F g−1 in the potential window and current density of 2 V and 0.6 A g−1, respectively. The energy density, power density, and coulombic efficiency at the set parameter are 62.31 Wh Kg−1, 1166.4 W Kg−1, and 79.61%, respectively. Finally, the practical device is assembled with the nanomaterial, where a red LED bulb glows after 1 min of charging.

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Increasing the efficiency of reduced graphene oxide obtained via high temperature electrospun calcination process for the electrochemical detection of dopamine

Cited by 21 publications

References 40 publications

Metal-Free Carbon-Based Nanomaterials: Insights from Synthesis to Applications in Sustainable Catalysis

Metal-Free Carbon-Based Nanomaterials: Insights from Synthesis to Applications in Sustainable Catalysis

Polymer/Graphene Nanocomposite Membranes: Status and Emerging Prospects

Coconut Husk Waste‐Derived Nitrogen‐Doped Mesoporous Carbon Nanomaterial as an Efficient and Sustainable Supercapacitor

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