Superior one-pot synthesis of a doped graphene oxide electrode for a high power density supercapacitor

Duraivel, Malarkodi; Nagappan, Saravanan; Balamuralitharan, B.; Selvam, S.; Karthick, S.; Prabakar, Kandasamy; Ha, Chang‐Sik; Kim, Hee-Je

doi:10.1039/c8nj01672k

Cited by 39 publications

(16 citation statements)

References 64 publications

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“…The various nanostructured SnO 2 /carbon composite was synthesized by hydrothermal process for electrochemical supercapacitor, sensors, and solar cells 25 – 29 . The SnO 2 and RuO 2 mixtures are used in the electrode materials for storage properties with an excellent cyclic stability 30 . The SnO 2 /graphene composite reported the increasing electrochemical performance and cyclic stability via microwave synthesis 31 .…”

Section: Introductionmentioning

confidence: 99%

Porous materials of nitrogen doped graphene oxide@SnO2 electrode for capable supercapacitor application

Ramesh

Yadav

Lee

et al. 2019

Sci Rep

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The porous materials of SnO 2 @NGO composite was synthesized by thermal reduction process at 550 °C in presence ammonia and urea as catalyst. In this process, the higher electrostatic attraction between the SnO 2 @NGO nanoparticles were anchored via thermal reduction reaction. These synthesized SnO 2 @ NGO composites were confirmed by Raman, XRD, XPS, HR-TEM, and EDX results. The SnO 2 nanoparticles were anchored in the NGO composite in the controlled nanometer scale proved by FE-TEM and BET analysis. The SnO 2 @NGO composite was used to study the electrochemical properties of CV, GCD, and EIS analysis for supercapacitor application. The electrochemical properties of SnO 2 @NGO exhibited the specific capacitance (~378 F/g at a current density of 4 A/g) and increasing the cycle stability up to 5000 cycles. Therefore, the electrochemical results of SnO 2 @NGO composite could be promising for high-performance supercapacitor applications.

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Section: Introductionmentioning

confidence: 99%

Porous materials of nitrogen doped graphene oxide@SnO2 electrode for capable supercapacitor application

Ramesh

Yadav

Lee

et al. 2019

Sci Rep

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“…This increase in the I D /I G value of GNFC nanocomposites is because of the doping of sulfur atom in rGO matrix which induces more disorder and defects in the material due to the sulfur higher atomic size of (1.04 Å) than that of carbon (0.77 Å). 49 Furthermore, as the loading proportion of CuS in GNFC nanocomposite rose, the NiFe 2 O 4 peak intensity gradually decreased, while the peak intensity of the D and G bands gradually increased with the shifting of band position. The peak shifting in the D and G band with increasing intensity, and rise in I D /I G value is because of the potential of the sulfur atom to create more distortion in graphene structure.…”

Section: ■ Results and Discussionmentioning

confidence: 96%

“…Additionally, GNFC-13 nanocomposites have an I D / I G value that is much higher than that of GO and GNF, which exhibit more flaws in the lattice structure of graphene. This increase in the I D / I G value of GNFC nanocomposites is because of the doping of sulfur atom in rGO matrix which induces more disorder and defects in the material due to the sulfur higher atomic size of (1.04 Å) than that of carbon (0.77 Å) . Furthermore, as the loading proportion of CuS in GNFC nanocomposite rose, the NiFe 2 O 4 peak intensity gradually decreased, while the peak intensity of the D and G bands gradually increased with the shifting of band position.…”

Section: Resultsmentioning

confidence: 99%

S-Doped rGO-Enwrapped Magnetically Porous NiFe₂O₄/CuS Heterojunction: An Efficient Z-Scheme Nano-Photocatalyst for Visible-Light-Driven Tetracycline Degradation and 4-Nitrophenol Reduction

Choudhury

Pattnayak

Sahoo

et al. 2023

Ind. Eng. Chem. Res.

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The photocatalytic degradation of economically hazardous compounds has been thoroughly researched with the aid of numerous photocatalysts and techniques. The efficient degradation and removal of lingering contaminants from the aquatic environment are still difficult to accomplish. Hereby, we present a sulfur-doped reduced graphene oxide (SrGO) enwrapped magnetic porous nickel ferrite (NiFe 2 O 4 )/copper sulfide (CuS) nanocatalyst (SrGO/NiFe 2 O 4 /CuS:GNFC) constructed through a facile solvothermal-reflux route. Under exposure to visible light, the fabricated GNFC photocatalyst exhibits outstanding catalytic activity for the photodegradation of tetracycline hydrochloride (TCH) and photoreduction of 4-nitrophenol (4-NP). Diverse analytical techniques were used to characterize the fabricated nanomaterials. In terms of photocatalytic activity, GNFC-13 outperforms all other nanocatalysts in eliminating model pollutants. According to our findings, 94.39% of TCH (80 ppm) can be degraded within 90 min, and 90.62% of 4-NP (30 ppm) can be reduced within 120 min by the GNFC-13 nanohybrid, which is significantly better than that of pristine and doublet nanomaterials, respectively. The explanations for the improved photocatalytic efficiency of GNFC nanocatalysts are due to the porous structures of the magnetic NiFe 2 O 4 and the SrGO surface, which can offer a lot of adsorption sites and, therefore, advantageous for the adsorption enrichment of harmful pollutants. Additionally, in situ photocatalytic degradation and adsorption enrichment working together synergistically may lead to improved pollutant removal efficacy. The Raman and XPS analytical techniques verified the formation of SrGO in the GNFC nanocomposites. The free-radical trapping studies, terephthalic acid test, nitroblue tetrazolium test, and electron spin resonance test disclosed that holes (h + ), hydroxy radicals ( • OH), electrons (e − ), and superoxide radicals ( • O 2− ) are cardinal reactive species in the photocatalytic system. A Z-scheme charge transfer channelization mechanism of the as-produced photocatalyst is explained in light of the various experimental findings. The developed Z-scheme system has led to the increase of catalytic activity due to the effective photoinduced carrier separation, wider photoabsorption range, high hole oxidation capacity, and high electron reduction power. In addition, the GNFC photocatalyst ability to catalyze TCH and 4-NP shows no discernible decline even after five recycles. Moreover, the GNFC nanocatalysts are magnetically detachable for recycling. Thus, this study reveals that the as-obtained GNFC nanocatalysts have an excellent prospect for environmental remediation of toxic pollutants.

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“…34 Therefore, the decrease in I D /I G indicates the increase in the removal of the oxygen functional groups. 30 Furthermore, the decrease of Raman spectrum intensity is closely related to the decrease in the number of material impurities, voids, and the destruction of symmetry. 35,36 As shown in Fig.…”

Section: Resultsmentioning

confidence: 99%

Solution-processed graphene oxide electrode for supercapacitors fabricated using low temperature thermal reduction

et al. 2020

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Superior one-pot synthesis of a doped graphene oxide electrode for a high power density supercapacitor

Abstract: The facile one-pot synthesis of sulfur-doped reduced graphene oxide results in a high powder density and easily reproducible electrode material.

Cited by 39 publications

References 64 publications

Porous materials of nitrogen doped graphene oxide@SnO2 electrode for capable supercapacitor application

Porous materials of nitrogen doped graphene oxide@SnO2 electrode for capable supercapacitor application

S-Doped rGO-Enwrapped Magnetically Porous NiFe₂O₄/CuS Heterojunction: An Efficient Z-Scheme Nano-Photocatalyst for Visible-Light-Driven Tetracycline Degradation and 4-Nitrophenol Reduction

Solution-processed graphene oxide electrode for supercapacitors fabricated using low temperature thermal reduction

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Superior one-pot synthesis of a doped graphene oxide electrode for a high power density supercapacitor

Abstract: The facile one-pot synthesis of sulfur-doped reduced graphene oxide results in a high powder density and easily reproducible electrode material.

Cited by 39 publications

References 64 publications

Porous materials of nitrogen doped graphene oxide@SnO2 electrode for capable supercapacitor application

Porous materials of nitrogen doped graphene oxide@SnO2 electrode for capable supercapacitor application

S-Doped rGO-Enwrapped Magnetically Porous NiFe2O4/CuS Heterojunction: An Efficient Z-Scheme Nano-Photocatalyst for Visible-Light-Driven Tetracycline Degradation and 4-Nitrophenol Reduction

Solution-processed graphene oxide electrode for supercapacitors fabricated using low temperature thermal reduction

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Product

Resources

About

S-Doped rGO-Enwrapped Magnetically Porous NiFe₂O₄/CuS Heterojunction: An Efficient Z-Scheme Nano-Photocatalyst for Visible-Light-Driven Tetracycline Degradation and 4-Nitrophenol Reduction