Using black carbon modified with NbMo and NbPd oxide nanoparticles for the improvement of H2O2 electrosynthesis

Trevelin, Leandro C.; Valim, Ricardo Bertholo; Carneiro, Jussara F.; Siervo, Abner de; Rocha, Robson S.; Lanza, Marcos R. V.

doi:10.1016/j.jelechem.2020.114746

Cited by 11 publications

(9 citation statements)

References 59 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Using the polymeric precursor method under similar experimental conditions for the synthesis of niobium oxide, Carneiro et al [31] obtained Nb 2 O 5 through the application of graphene. Under similar synthesis conditions, Trevelin et al [30] also produced Nb 2 O 5 using carbon Printex 6L. Thus, the synthesis process presented in this work is e cient for obtaining Nb 2 O 5 and is perfectly in line with the synthesis processes reported in the literature.…”

Section: -Structural Morphological Characterizationsupporting

confidence: 83%

“…Figure SM1 shows the X-ray uorescence emission spectra of the niobium incorporated into the Printex L6 carbon in lines K a 16,529 keV and K b 18,621 keV. Each metal has energy values that are typically characteristic of the uorescence emission; for niobium, the values are in K a 16,58 keV and K b 18,62 keV [30]. As can be observed, the experimental values are in agreement with the tabulated values; this shows that the metal has been e ciently incorporated into the carbon support.…”

Section: -Structural Morphological Characterizationmentioning

confidence: 99%

“…This electrocatalyst exhibited a less intense broad peak pattern and a smaller average crystallite size compared to the 15% Nb/C electrocatalyst. The decrease in particle size contributed to an increase in the adsorption of oxygenated species on the catalyst surface [22,30,31], and this plays a major role in the kinetics of oxygen reduction reaction (ORR) in terms of electrocatalytic activity.…”

Section: -Structural Morphological Characterizationmentioning

confidence: 99%

See 2 more Smart Citations

Synthesis of Nb2O5/C for H2O2 electrogeneration and its application for the degradation of levofloxacin

Valim,

Carneiro,

Lourenço

et al. 2023

J Appl Electrochem

View full text Add to dashboard Cite

The present work sought to investigate H 2 O 2 generation using a gas diffusion electrode composed of carbon with niobium oxide for the degradation of levo oxacin. Results showed that the oxide formed was Nb 2 O 5 (crystallographic structure was con rmed by XRD; chemical composition detected by XPS) and the increase in the Nb/C ratio led to more crystalline structure and higher crystallite size. The carbon with 5% Nb 2 O 5 presented an average particle size of 5.6 nm and this material led to the generation of the highest amount of H 2 O 2 (317.6 mg L − 1 ). The C/5% Nb 2 O 5 -modi ed GDE was applied for the degradation of levo oxacin in an acid medium, in the presence and absence of Fe 2+ ions. Long-term experiments conducted for the analysis of the time required for the total removal of levo oxacin showed that 96% of levo oxacin and 66% of organic load were removed in 270 min of treatment at the current density of 100 mA cm − 2 . HighlightsNb 2 O 5 on carbon increased the H 2 O 2 generation by 236% compared to unmodi ed carbon In 90 min, 46% of the organic load was removed at 100 mA cm -2 Levo oxacin degradation, in 270 min, reached 96% at 100 mA cm -2

show abstract

Section: -Structural Morphological Characterizationsupporting

confidence: 83%

Section: -Structural Morphological Characterizationmentioning

confidence: 99%

Section: -Structural Morphological Characterizationmentioning

confidence: 99%

See 1 more Smart Citation

Synthesis of Nb2O5/C for H2O2 electrogeneration and its application for the degradation of levofloxacin

Valim,

Carneiro,

Lourenço

et al. 2023

J Appl Electrochem

View full text Add to dashboard Cite

show abstract

“…Cu [30], Pd, Nb and Mo [32], not only displaces the ORR, but also parallel reactions, such as the hydrogen evolution reaction -HER (2H + + 2e -→ H2). At high values of potential, the HER has a strong influence on the carbonaceous materials.…”

Section: Electrogeneration Of H2o2 By Gdem and Mechanismsmentioning

confidence: 99%

Bisphenol-S removal via photoelectro-fenton/H2O2 process using Co-porphyrin/Printex L6 gas diffusion electrode

Cordeiro-Junior

Martins

Pereira

et al. 2022

Separation and Purification Technology

View full text Add to dashboard Cite

“…In recent years, rare-earth metals have been considered for the ORR because of their unique electronic structure and ability to form numerous effective active sites [ 40 , 41 , 42 , 43 , 44 , 45 ]. Rare-earth metals are primarily oxides with poor conductivity.…”

Section: Introductionmentioning

confidence: 99%

Evaluating the Growth of Ceria-Modified N-Doped Carbon-Based Materials and Their Performance in the Oxygen Reduction Reaction

Chang

Jia

2022

Nanomaterials

View full text Add to dashboard Cite

Owning to their distinctive electronic structure, rare-earth-based catalysts exhibit good performance in the oxygen reduction reaction (ORR) and can replace commercial Pt/C. In this study, CeO2-modified N-doped C-based materials were synthesized using salt template and high-temperature calcination methods, and the synthesis conditions were optimized. The successful synthesis of CeO2–CN–800 was confirmed through a series of characterization methods and electrochemical tests. The test results show that the material has the peak onset potential of 0.90 V and the half-wave potential of 0.84 V, and has good durability and methanol resistance. The material demonstrates good ORR catalytic performance and can be used in Zn–air batteries. Moreover, it is an excellent catalyst for new energy equipment.

show abstract

Using black carbon modified with NbMo and NbPd oxide nanoparticles for the improvement of H2O2 electrosynthesis

Cited by 11 publications

References 59 publications

Synthesis of Nb2O5/C for H2O2 electrogeneration and its application for the degradation of levofloxacin

Synthesis of Nb2O5/C for H2O2 electrogeneration and its application for the degradation of levofloxacin

Bisphenol-S removal via photoelectro-fenton/H2O2 process using Co-porphyrin/Printex L6 gas diffusion electrode

Evaluating the Growth of Ceria-Modified N-Doped Carbon-Based Materials and Their Performance in the Oxygen Reduction Reaction

Contact Info

Product

Resources

About