Investigation of Mn2O3 as impurity on the electrochemical hydrogen storage performance of MnO2CeO2 nanocomposites

Sangsefidi, Fatemeh Sadat; Salavati‐Niasari, Masoud; Varshoy, Shokufeh; Shabani-Nooshabadi, Mehdi

doi:10.1016/j.ijhydene.2017.09.144

Cited by 29 publications

(4 citation statements)

References 55 publications

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“…Pt nanoparticles also own the capability of uric acid enzyme . These nanoparticles, playing the role of natural enzymes, have been widely used in the fields of immunoassay, determination of metal ions, target sensor, degradation of pollutants, hybridization of nucleic acids and organic synthesis …”

Section: Introductionmentioning

confidence: 99%

Synthesis of CeO₂ nanoparticles with different morphologies and their properties as peroxidase mimic

Zhang

Wang

et al. 2018

J Am Ceram Soc

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The overall objective of this work was to identify and determine the controlling factors of catalytic activity of CeO2 nanoparticles with different properties. Therefore, four kinds of CeO2 nanoparticles are successfully synthesized and used as peroxidase mimics. The results reveal that the catalytic activity is related to specific surface area and surface oxygen (Osur) content. For different CeO2 nanoparticles, specific surface area is the leading factor of catalytic activity. The catalytic activity increases with the increasing specific surface area. If the CeO2 nanoparticles have similar specific surface area, the less Osur contains, the lower catalytic activity will be. Meanwhile, crystallinity is not the influence factor of catalytic activity. Bamboo‐like CeO2 (B‐CeO2) nanoparticles show excellent catalytic activity and the reaction conditions are optimized. Furthermore, the catalytic activity of B‐CeO2 nanoparticles decreases very slightly after 15 cycles of the catalysis experiment. Therefore, B‐CeO2 nanoparticles can serve as effective recyclable peroxidase mimics.

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Section: Introductionmentioning

confidence: 99%

Synthesis of CeO₂ nanoparticles with different morphologies and their properties as peroxidase mimic

Zhang

Wang

et al. 2018

J Am Ceram Soc

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“…After 20 cycles, the discharging capacities of Fe 2 O 3 –CeO 2 nanocomposite electrodes (samples 4 and 7) still remain above 6450 and 5450 mAh/g, respectively. According to the results, the storage capacity for sample 4 is higher compared to that for sample 7, which is probably due to the presence of more defects, higher surface to volume ratio, more surface roughness, a greater number of active sites, and better pore distribution. − The high specific surface area of sample 4 may be owing to its specific morphology (moss-like structure).…”

Section: Resultsmentioning

confidence: 95%

Fe₂O₃–CeO₂ Ceramic Nanocomposite Oxide: Characterization and Investigation of the Effect of Morphology on Its Electrochemical Hydrogen Storage Capacity

Sangsefidi

Salavati‐Niasari

2018

ACS Appl. Energy Mater.

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The CHP technique is applied for evaluating of hydrogen storage capacity of the Fe 2 O 3 −CeO 2 nanocomposite oxide. The Fe 2 O 3 −CeO 2 nanocomposite oxide has been synthesized via a thermal decomposition route using different solvents. To achieve better morphology, various parameters were studied such as calcination temperature, type of solvent, and the changing molar ratio of Ce:Fe. Then, XRD, EDS, FT-IR, SEM, TEM, and BET have been applied to characterize the prepared nanocomposite oxide. The electrochemical hydrogen storage capacity of the proposed nanocomposite oxide was studied for two samples, 4 and 7. The discharge capacity of samples at the 1st and 20th cycles was observed at 940 mAh/g (≈3.1 wt %) and 6450 mAh/g (≈21.5 wt %) for sample 4 and from 850 mAh/g (≈2.8 wt %) to 5450 mAh/g (≈18.2 wt %) for sample 7. The enhancement of their electrochemical hydrogen storage capacity is owing to the creation of new sites during charge and discharge process in the working electrode (Fe 2 O 3 −CeO 2 nanocomposite oxide).

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“…It could be concluded that this working electrode had greater stability compared to those reported in the other published papers. 52,53 It was documented from the great plateau of discharge that the prepared porous carbon might have a well-meaning performance in electrochemical storage.…”

Section: Resultsmentioning

confidence: 99%

Highly Porous Carbon from Microalga, Chlorella Vulgaris, as an Electrochemical Hydrogen Storage Material

Seifi

Masoum

Tafreshi

et al. 2020

J. Electrochem. Soc.

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Chlorella Vulgaris, as a well-known green microalga is considered as a reliable biomass source with vast biotechnological potential to produce various high-performance products. In the present study, porous carbon with a specific surface area was produced via a hydrothermal technique. The investigated materials were characterized by Fourier-transform infrared spectroscopy (FTIR), scanning electron microscope (SEM), energy-dispersive X-ray (EDX), Brunauer-Emmett-Teller (BET) and transmission electron microscopy (TEM). The electrochemical hydrogen storage (EHS) capacity of the product was investigated by a three-electrode system (chronopotentiometry) in 6 M KOH electrolyte. The microalga-based porous carbons showed a good electrochemical hydrogen storage capacity equal to 1040 mAh g −1 (≈3.9 wt%) after 40 cycles. This great capacity principally is due to the porous structure (distributions of pore size is mesoporous), high surface area (718 m 2 g −1 ), and proper surface functional groups (C−OH, C-O-S and COO − ) of prepared microalga-based porous carbons. These results suggested that the microalgal biomass could be successfully applied in electrochemical storage of hydrogen.

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Investigation of Mn2O3 as impurity on the electrochemical hydrogen storage performance of MnO2CeO2 nanocomposites

Cited by 29 publications

References 55 publications

Synthesis of CeO₂ nanoparticles with different morphologies and their properties as peroxidase mimic

Synthesis of CeO₂ nanoparticles with different morphologies and their properties as peroxidase mimic

Fe₂O₃–CeO₂ Ceramic Nanocomposite Oxide: Characterization and Investigation of the Effect of Morphology on Its Electrochemical Hydrogen Storage Capacity

Highly Porous Carbon from Microalga, Chlorella Vulgaris, as an Electrochemical Hydrogen Storage Material

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Investigation of Mn2O3 as impurity on the electrochemical hydrogen storage performance of MnO2CeO2 nanocomposites

Cited by 29 publications

References 55 publications

Synthesis of CeO2 nanoparticles with different morphologies and their properties as peroxidase mimic

Synthesis of CeO2 nanoparticles with different morphologies and their properties as peroxidase mimic

Fe2O3–CeO2 Ceramic Nanocomposite Oxide: Characterization and Investigation of the Effect of Morphology on Its Electrochemical Hydrogen Storage Capacity

Highly Porous Carbon from Microalga, Chlorella Vulgaris, as an Electrochemical Hydrogen Storage Material

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Synthesis of CeO₂ nanoparticles with different morphologies and their properties as peroxidase mimic

Synthesis of CeO₂ nanoparticles with different morphologies and their properties as peroxidase mimic

Fe₂O₃–CeO₂ Ceramic Nanocomposite Oxide: Characterization and Investigation of the Effect of Morphology on Its Electrochemical Hydrogen Storage Capacity