Synthesis of Supported Ruthenium Catalyst for Phenol Degradation in the Presence of Peroxymonosulfate

Anbia, Mansoor; Rezaie, Marzie

doi:10.1007/s11270-016-3047-0

Cited by 14 publications

(8 citation statements)

References 31 publications

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“…The degradation rate constants of the sea urchin-like NiCo2O4/PMS system ( = 0.09139 min −1 ) were 1.4-times and 450-times higher than those of the Co3O4/PMS system (k = 0.06465 min −1 ) and NiO/PMS system (k = 0.00020 min −1 ), respectively. The result sug gests that the doping of Ni plays an important role in activating PMS to degrade pheno Moreover, Table S1 lists the catalytic properties of some catalysts in the literatures com pared with the NiCo2O4 catalyst in this work for phenol degradation [30][31][32][33]. As can b seen from the table, the sea urchin-like NiCo2O4/PMS system shows excellent catalyti performance in phenol degradation.…”

Section: Catalytic Performancementioning

confidence: 68%

Sea Urchin-like NiCo2O4 Catalyst Activated Peroxymonosulfate for Degradation of Phenol: Performance and Mechanism

Chen,

Zhang,

Liu

et al. 2023

Molecules

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How to efficiently activate peroxymonosulfate (PMS) in a complex water matrix to degrade organic pollutants still needs greater efforts, and cobalt-based bimetallic nanomaterials are desirable catalysts. In this paper, sea urchin-like NiCo2O4 nanomaterials were successfully prepared and comprehensively characterized for their structural, morphological and chemical properties via techniques, such as X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), among others. The sea urchin-like NiCo2O4 nanomaterials exhibited remarkable catalytic performance in activating PMS to degrade phenol. Within the NiCo2O4/PMS system, the removal rate of phenol (50 mg L−1, 250 mL) reached 100% after 45 min, with a reaction rate constant k of 0.091 min−1, which was 1.4-times higher than that of the monometallic compound Co3O4/PMS system. The outstanding catalytic activity of sea urchin-like NiCo2O4 primarily arises from the synergistic effect between Ni and Co ions. Additionally, a comprehensive analysis of key parameters influencing the catalytic activity of the sea urchin-like NiCo2O4/PMS system, including reaction temperature, initial pH of solution, initial concentration, catalyst and PMS dosages and coexisting anions (HCO3−, Cl−, NO3− and humic acid), was conducted. Cycling experiments show that the material has good chemical stability. Electron paramagnetic resonance (EPR) and quenching experiments verified that both radical activation (SO4•−, •OH, O2•−) and nonradical activation (1O2) are present in the NiCo2O4/PMS system. Finally, the possible degradation pathways in the NiCo2O4/PMS system were proposed based on gas chromatography–mass spectrometry (GC-MS). Favorably, sea urchin-like NiCo2O4-activated PMS is a promising technology for environmental treatment and the remediation of phenol-induced water pollution problems.

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Section: Catalytic Performancementioning

confidence: 68%

Sea Urchin-like NiCo2O4 Catalyst Activated Peroxymonosulfate for Degradation of Phenol: Performance and Mechanism

Chen,

Zhang,

Liu

et al. 2023

Molecules

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“…These supports must have appropriate features such as suitable surface area, high thermal, mechanical stability, and recyclability. The most widely used supports are TiO 2 , ZrO 2 , MgAl(O), Fe 3 O 4 -SiO 2 , Al 2 O 3 , carbon nanotubes (CNTs), activated carbon (AC), zeolite, and metal organic frameworks (MOFs) . POMs are often used as heterogeneous catalysts with H 2 O 2 and O 2 as oxidizing agents in the ODS process.…”

Section: Heterogeneous Polyoxometalatesmentioning

confidence: 99%

Oxidative Desulfurization of Liquid Fuels Using Polyoxometalate-Based Catalysts: A Review

Ahmadian

Anbia

2021

Energy Fuels

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Nowadays, desulfurization of liquid fuels is inevitable because of strict environmental and industrial regulations on liquid fuels specifications. Hydrodesulfurization (HDS) technology has been used widely to produce fuels with ultralow sulfur content (S ≤ 10 ppm). However, this method is not effective enough for removing refractory sulfur compounds (e.g., benzothiophene, dibenzothiophene, and their derivatives). Consequently, alternative or supplementary desulfurization methods have been rapidly developed in recent years. The oxidative desulfurization (ODS) process is a promising method with high selectivity, low cost, mild reaction conditions, and high efficiency. In the past few decades, the ODS process of fuels by polyoxometalates (POMs) as catalysts have attracted considerable attention, resulting in different works have been published due to their strong acidity, fast and reversible multielectron redox properties, tunable redox properties, as well as thermal, hydrolytic, and oxidative stability. In this review, the removal of S-compounds from fuel oils is investigated via the ODS process using homogeneous and heterogeneous polyoxometalate catalysts. Moreover, the advantages and problems of each system are discussed. Various techniques for reducing their noticeable drawbacks are also presented. Finally, the regeneration of POM catalysts, as an important step in industrial applications, is examined.

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“…adsorption [11][12][13][14][15][16], biological degradation [17], persulfate-based AOPs [18], photocatalytic oxidation [8,19], electrochemical treatment [20,21], Fenton and ultrasound-Fenton oxidation [3,22,23], ozonation [24,25], and ultraviolet photolysis [26]. Among these technologies, adsorption has been recognized as one of the most promising and dependable approaches for the removal of low-concentration pollutants from wastewaters in consideration of its relatively low cost, facile operation and maintenance, high removal efficiency, and easy integration with wastewater treatment plants [27] and is widely used in the removal of phenols and other emerging contaminants in waters [12,27].…”

Section: Introductionmentioning

confidence: 99%

Enhancing the Adsorption Performance of Chitosan to Phenol Derivatives through Hydrophobic Modification: Kinetics, Equilibrium, and Mechanisms

li¹,

wang²,

huo³

et al. 2022

Preprint

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Adsorption is effective methods to remove trace organic pollutants in water, and the development of cheap and efficient adsorption materials is essential to the real application of this technique. In this study, chitosan, a natural aminopolysaccharide, was grafted with palmityl chloride using an acylation procedure to improve its hydrophobicity and adsorption capacity to hydrophobic organic contaminants. A hydrophobically-modified chitosan (HMC2) was characterized using Fourier transform infrared spectroscopy (FTIR), and then was tested to adsorb phenolic pollutants from water. The batch adsorption experiments were employed to investigate the adsorption equilibrium and kinetics of 4-nonylphenol(4-NP), α-naphthol(Nap), 4-chlorophenol(4-CP) and phenol(Phe) on HMC2 and chitosan. The effect of temperature, salt concentration, and pH on adsorption was studied for the understanding of adsorption processes. Moreover, a linear free energy relationship approach and FTIR technique were used to identify the predominant adsorption mechanisms. The obtained results showed that the modified chitosan had higher adsorption capacity to 4-NP, Nap, 4-CP and Phe than the unmodified one. The adsorption kinetics of 4-NP, Nap and 4-CP on chitosan and HMC2 were found to be well fitted by the first-order kinetic model. The adsorption isotherms of 4-NP, Nap, 4-CP and Phe on HMC2 conformed to the linear or Freundlich models. The pH range from 5.6-8.5 appeared to have non-significant effect on the adsorption capacity of HMC2. However, the increasing salt concentration was found to favor the adsorption. The adsorption enthalpy changes (ΔH0) for 4-NP, Nap and CP on HMC2 varied from -3.82 to -0.44 kJ/mol, and the adsorption entropy changes (ΔS0) changed from 21.7 to 85.9 J/(mol·K). When the logarithms of the distribution constant (logKd) were correlated with the logarithms of the octanol-water partition coefficient (logKow), a good linear relationship was observed:logKd=1.451·logKow - 4.893 (r2=0.999). Thus, the hydrophobic interaction was proposed as a predominant mechanism for adsorption of nonionized 4-NP, Nap, 4-CP, and Phe on HMC2, which was further confirmed by the FTIR data. This study may provide guidance for tailoring high-performance chitosan to selectively remove organic pollutants in water.

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Synthesis of Supported Ruthenium Catalyst for Phenol Degradation in the Presence of Peroxymonosulfate

Cited by 14 publications

References 31 publications

Sea Urchin-like NiCo2O4 Catalyst Activated Peroxymonosulfate for Degradation of Phenol: Performance and Mechanism

Sea Urchin-like NiCo2O4 Catalyst Activated Peroxymonosulfate for Degradation of Phenol: Performance and Mechanism

Oxidative Desulfurization of Liquid Fuels Using Polyoxometalate-Based Catalysts: A Review

Enhancing the Adsorption Performance of Chitosan to Phenol Derivatives through Hydrophobic Modification: Kinetics, Equilibrium, and Mechanisms

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