Dual role of flower-like Fe3O4/Ag microstructure in electrocatalytic detection and catalytic reduction of 4-nitrophenol

Ho, Van Minh Hai; Vo, The Ky; Nguyen, Thi Hong Anh; Dinh, Quang Khieu; Nguyen, Van Cuong

doi:10.1016/j.mssp.2023.107441

Cited by 10 publications

(3 citation statements)

References 57 publications

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“…Moreover, the electrocatalytic activity of PC-bic is compared with the other electrocatalysts reported in the literature (Table S1). The electrocatalytic activity of PC-bic is preferable to metal oxide, graphitic carbon nitride, graphene oxide or the composites of metal oxides and nanosheets [38,[43][44][45][46]54]. By comparing the 4-NP reduction peak currents, it reveals that PC-bic has the higher peak current density than that of Cu-curcumin and PC-c, indicating the superior electrocatalytic reduction performance of PC-bic.…”

Section: Electrocatalytic Reduction Of 4-nitrophenolmentioning

confidence: 95%

Templating Synthesis of Hierarchically Porous Carbon with Magnesium Salts for Electrocatalytic Reduction of 4-Nitrophenol

Gan

Xiao

2023

Catalysts

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Hierarchically porous carbon (PC) was synthesized by a templating method, using magnesium salts (Mg(HCO3)2, MgC2O4 and MgO) as template precursors and citric acid as carbon precursor. During the carbonization process, besides the production of MgO particles, many gases (e.g., CO2/NO2/H2O) were also released and acted as a porogen to generate pores in carbon. The resulting composite (MgO@C) was subsequently treated with HCl solution to remove the MgO templates, yielding hierarchically porous carbon. The surface oxygen functional groups over porous carbon were characterized by TPD and XPS, which showed that the PC-bic, synthesized using Mg(HCO3)2 as the template precursor, had the highest value among the PCs. As expected, the PC-bic exhibited the best performances for electrocatalytic reduction of 4-nitrophenol, with a peak current of −135.5 μA at −0.679 V. The effects of 4-nitrophenol concentration, buffer solution pH and scanning rate on the electrocatalytic activities, as well as the stability of PC-bic for the reaction were investigated.

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Section: Electrocatalytic Reduction Of 4-nitrophenolmentioning

confidence: 95%

Templating Synthesis of Hierarchically Porous Carbon with Magnesium Salts for Electrocatalytic Reduction of 4-Nitrophenol

Gan

Xiao

2023

Catalysts

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“…The phenolic compound, namely, 4-nitrophenol (4-NP), is recognized as a hazardous pollutant with a negative impact on human health [1][2][3][4]. For this reason, it is suggested that 4-NP concentrations in water must be kept below 10 ppb [4].…”

Section: Introductionmentioning

confidence: 99%

High Catalytic Activity of CoxPt100−x Alloys for Phenolic Compound Reduction

Dragos-Pinzaru,

Buema,

Racila

et al. 2024

Nanomaterials

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In this study, we report the influence of the Pt concentration in CoxPt100−x alloys on the catalytic activity of the alloys for 4-nitrophenol (4-NP) reduction. More precisely, a series of CoxPt100−x alloys with a Pt concentration ranging between 60% and 95% were prepared using electrodeposition at controlled potentials from stable hexachloroplatinate aqueous solution. The Pt concentration was tuned by varying the electrodeposition potential from −0.6 to −0.9 V. The changes in the CoxPt100−x alloy microstructure and crystalline structure have been investigated using SEM and TEM analysis. Our results show that the microstructure and the crystalline structure of the as-prepared materials do not depend on the electrodeposition potential. However, the catalytic activity of CoxPt100−x alloys is closely correlated with the potential applied during electrochemical synthesis, hence the Pt content. We demonstrated that the synthesized materials present a high catalytic activity (approx. 90%) after six cycles of reusability despite the fact that the Pt content of the as-prepared alloys decreases. The easy preparation method that guarantees more than 97% catalytic activity of the CoxPt100−x alloys, the easy recovery from solution, and the possibility of reusing the CoxPt100−x alloys are the benefits of the present study.

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“…2 4-NP is not prone to degradation in the natural ecosystem due to its high solubility, stability, and poisonousness. Common removal methods include adsorption, 3,4 microbial degradation, 5 catalytic degradation, 6–8 electrochemical treatment, 9 etc. However, most of these treatment technologies require significant energy consumption and stringent reaction conditions.…”

Section: Introductionmentioning

confidence: 99%

In situ green synthesis of copper-loaded chitin/hydroxyapatite hydrogels for efficient catalytic reduction of 4-nitrophenol

Feng,

Chen,

et al. 2024

New J. Chem.

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Dual role of flower-like Fe3O4/Ag microstructure in electrocatalytic detection and catalytic reduction of 4-nitrophenol

Cited by 10 publications

References 57 publications

Templating Synthesis of Hierarchically Porous Carbon with Magnesium Salts for Electrocatalytic Reduction of 4-Nitrophenol

Templating Synthesis of Hierarchically Porous Carbon with Magnesium Salts for Electrocatalytic Reduction of 4-Nitrophenol

High Catalytic Activity of CoxPt100−x Alloys for Phenolic Compound Reduction

In situ green synthesis of copper-loaded chitin/hydroxyapatite hydrogels for efficient catalytic reduction of 4-nitrophenol

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