Synergistic degradation of Methylene Blue by novel Fe-Co bimetallic catalyst supported on waste silica in photo-Fenton-like system

Quiton, Khyle Glainmer N.; Lu, Ming‐Chun; Huang, Yen‐Chieh

doi:10.1186/s42834-022-00127-w

Cited by 14 publications

(1 citation statement)

References 48 publications

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“…Beyond these results, such investigation, which has not been reported before according to our knowledge, could be implemented to other paramagnetic atoms (Cu, Co, etc.) and more important to bimetallic catalysts, as far as one atom has a nonzero magnetic moment …”

Section: Catalytic Performances Of Single-atom Vs Np-supported Meso–m...mentioning

confidence: 99%

Unraveling Oxidation and Spin States of a Single Fe-Based Meso-Macroporous Silica Catalyst in Fenton-like Reaction by Magnetic Measurements

Bellouard,

Kim,

Ghanbaja

et al. 2024

J. Phys. Chem. C

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Single-atom catalysts are acknowledged for their superior efficiency compared to nanoparticles or clusters, primarily because of the enhanced accessibility of the catalytic center. Essential parameters for assessing their performance are the metal loading degree and oxidation state of the individual catalytic sites. This is particularly the case in Fe-based Fenton-like reaction, in which both Fe 2+ and Fe 3+ are active but react with significantly different catalytic rates. While the elemental metal loading can be easily assessed by elemental analysis, the determination of the oxidation degree is more challenging. To do so, we designed single Fe-based meso-macroporous silica materials as catalysts for the degradation of methylene blue, an organic dye serving as a wellknown model for the degradation of organic pollutants in wastewater. The silica materials were successfully synthesized by a sol−gel process through a combined templating mechanism with micelles and solid lipid nanoparticles of Fe-based surfactants. Magnetic measurements have revealed that half of the iron centers are in the Fe 2+ state. The tracking of the Fenton like reaction through magnetic measurements agrees with the contribution of Fe 2+ in the catalytic process. The magnetic response emerges as a valuable tool for quantifying and characterizing individual catalytic centers.

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Section: Catalytic Performances Of Single-atom Vs Np-supported Meso–m...mentioning

confidence: 99%

Unraveling Oxidation and Spin States of a Single Fe-Based Meso-Macroporous Silica Catalyst in Fenton-like Reaction by Magnetic Measurements

Bellouard,

Kim,

Ghanbaja

et al. 2024

J. Phys. Chem. C

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Bimetallic magnetic nanoparticles dispersed in glycerol: An efficient hydrophilic catalyst for the reduction of 4‐nitrophenol

Mary,

Stella

2024

Applied Organom Chemis

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A one‐pot, ecologically friendly method for the preparation of Fe/Ni, Fe/Co and Co/Ni bimetallic magnetic nanoparticles (MNPs) was reported, using glycerol as both a solvent and reducing agent. Six different bimetallic MNPs by varying the proportions of transition metals, namely, Fe, Co and Ni were synthesized by the chemical reduction method. The catalytic efficiency of the synthesized nanoparticles (NPs) was explored for the reduction of 4‐nitrophenol, and the reaction rate for different catalysts was systematically analysed. Especially, glycerol‐Fe/Co (1:3) bimetallic nanoparticles as a magnetically recoverable catalyst had higher catalytic activity than the other bimetallic nanoparticles for the reduction of 4‐nitrophenol to 4‐aminophenol in the presence of sodium borohydride. The reduction process was monitored by UV–visible spectroscopy, and the reaction was complete within 8 min. The kinetic study shows 99% conversion of 4‐nitrophenol to 4‐aminophenol, and the rate constant is 0.593 min−1. Furthermore, the glycerol‐Fe/Co (1:3) MNPs were retrieved from the reaction mixture and subsequently utilized in five consecutive cycles, demonstrating both the reusability and durability of the NPs as a catalyst. This research was remarkable for its fast reaction kinetics, simplified one‐pot conversion of 4‐nitrophenol to 4‐aminophenol without the need for mechanical or magnetic stirring and in‐depth study of six bimetallic MNPs' catalytic properties in nitro reduction. These findings explored the potential benefits of bimetallic magnetic NPs for the synthesis of 4‐aminophenol products.

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Synthesis of nitrogen-doped maghemite photocatalyst using laterite ore and its application to decompose methylene blue

Solihin,

Lisdiana,

Wahab

et al. 2023

Int. J. Environ. Sci. Technol.

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Synergistic degradation of Methylene Blue by novel Fe-Co bimetallic catalyst supported on waste silica in photo-Fenton-like system

Cited by 14 publications

References 48 publications

Unraveling Oxidation and Spin States of a Single Fe-Based Meso-Macroporous Silica Catalyst in Fenton-like Reaction by Magnetic Measurements

Unraveling Oxidation and Spin States of a Single Fe-Based Meso-Macroporous Silica Catalyst in Fenton-like Reaction by Magnetic Measurements

Bimetallic magnetic nanoparticles dispersed in glycerol: An efficient hydrophilic catalyst for the reduction of 4‐nitrophenol

Synthesis of nitrogen-doped maghemite photocatalyst using laterite ore and its application to decompose methylene blue

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