CoFe/SBA-15 catalyst coupled with peroxymonosulfate for heterogeneous catalytic degradation of rhodamine B in water

胡龙兴,; 杨帆,; 邹联沛,; 袁航,; 胡星,

doi:10.1016/s1872-2067(15)60939-1

Cited by 33 publications

(7 citation statements)

References 46 publications

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“…These results indicate that the pore size of the MCF support decreased aer loading with Cu and Ce species, and a part of the supported species have entered into the MCF channels. [33][34][35] The BET surface area, pore volume, and pore size of all the samples are presented in Table 1. Apparently, the incorporation of Cu and Ce had signicant impacts on the textural properties of the MCF support, as notable decreases in BET surface area, pore volume and pore size, conrming that parts of the Cu and Ce species added had entered into the pore system successfully.…”

Section: Effect Of the Total Metal Loadingmentioning

confidence: 99%

“…Apparently, the incorporation of Cu and Ce had signicant impacts on the textural properties of the MCF support, as notable decreases in BET surface area, pore volume and pore size, conrming that parts of the Cu and Ce species added had entered into the pore system successfully. [33][34][35] Raman analysis can provide direct evidence of oxygen vacancies and defects owing to changes in the vibrational structure of the CeO 2 lattice. 36 The Raman spectra of the different catalysts are shown in Fig.…”

Section: Effect Of the Total Metal Loadingmentioning

confidence: 99%

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Preparation and characterization of mesostructured cellular foam silica supported Cu–Ce mixed oxide catalysts for CO oxidation

et al. 2017

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Section: Effect Of the Total Metal Loadingmentioning

confidence: 99%

Section: Effect Of the Total Metal Loadingmentioning

confidence: 99%

Preparation and characterization of mesostructured cellular foam silica supported Cu–Ce mixed oxide catalysts for CO oxidation

et al. 2017

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“…There are several techniques that can be utilized for the effective incorporation of transition metals onto an adsorbent structure, including wetness impregnation [45][46][47], spontaneous monolayer dispersion [45,48], grafting [49][50][51][52][53], and ion exchange [54][55][56][57]. Among these, grafting and ion exchange have produced better results with respect to water-stability and loading of metal.…”

Section: Incorporation Of Transition Metals As Adsorption Sitesmentioning

confidence: 99%

Progress in the design of nanoporous adsorbent materials containing transition metals for the removal of contaminants of emerging concern

Muñoz-Senmache

Fernández-Reyes

Hernández‐Maldonado

2021

Environmental Pollutants and Bioavailability

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Significant attention has been paid to contaminants of emerging concern (CECs) for several years due to their persistence in water sources and toxicity. The necessity of upgrading current wastewater treatment technologies is vital to guarantee timely remediation of CECs, particularly given the scarcity of potable water for direct human consumption and even for agricultural irrigation. In this regard, the integration of transition metals onto porous adsorbent materials for use in water and wastewater treatment operations could play a significant role due to their ability to undergo specific interactions (i.e., complexation-type) with CECs at ambient temperature. Furthermore, coupling these interactions with hydrophobicity inducing species or phases in situ (i.e. hierarchically) further enhances affinity and capacity toward CECs. This review highlights the progress so far in the bench-scale design of transition metal-based nanoporous adsorbents, including hierarchical composites prepared via confined space synthesis, for the removal of CECs from water at ambient conditions.

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“…• First−order kinetics with activation energy of 12 kJ mol −1 . Hu et al (2015) CoFe2O4/SBA−15 Wetness impregnation method Rhodamine B • >95% of 5 mg L −1 Rhodamine B removed in 120 min with 0.1 g L −1 catalyst, and PMS:rhodamine B molar ratio of 20:1.…”

Section: Mixed−metal Catalystsmentioning

confidence: 99%

“…CoFe2O4 (Hu et al, 2015;Qin et al, 2013;Ren et al, 2015b;Stoyanova et al, 2014;Xu et al, 2015b;Yang et al, 2009;Yao et al, 2012), CoMn2O4 (Yao et al, 2015), CoMnAl (Li et al, 2015), magnetic Co−based metal organic framework (Andrew Lin et al, 2015), and Fe0.8Co2.2O4 (Li et al, 2016) have been investigated by many researchers. Compared with CoO and Co3O4, Co mixed metal catalysts exhibit better catalytic activity, improved stability (lower Co leaching), and ferromagnetism (in some catalysts) for the ease of separation of the catalyst from the treated water.…”

Section: Co Mixed−metal Catalystsmentioning

confidence: 99%

Activation of peroxymonosulfate by heterogeneous catalysts for the removal of organic pollutants in water

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In recent decades, advanced oxidation process employing sulfate radical has emerged as a very promising method to remove recalcitrant organic pollutant in water. One of the most efficient ways to generate sulfate radical is by heterogeneous transition metal activation of peroxymonosulfate (PMS, available commercially as Oxone ® ). To date, many studies employed cobalt oxide catalysts which can potentially lead to the cobalt pollution due to cobalt leaching during treatment. In order to eliminate the cobalt leaching problem, the main objective of this study is to fabricate other types of metal oxide catalysts to activate PMS for the degradation of recalcitrant organic contaminants.In the first part of the study, a novel dipicolinic acid−functionalized Fe2O3 (DPA−Fe2O3) with high surface area was prepared by co−precipitation of a Fe(III)-DPA complex. It was used as a catalyst to activate PMS for bisphenol A (BPA) detoxification. A higher catalytic activity of DPA−Fe2O3 over other Fe(III)−based catalysts was observed for BPA oxidation in the presence of Oxone ® . The performance of the catalyst was optimized with respect to the initial pH, Oxone ® dosage and catalyst loading. The acute toxicity of BPA solution over time was studied using Vibrio fischeri bacteria and the results indicated that the evolution of acute toxicity was highly dependent on the initial Oxone ® dosage.In the second part of the study, the catalytic activity of Fe2O3 catalyst was successfully improved by incorporating Cu(II) during the co−precipitation synthesis to produce a mixed metal CuFe2O4-Fe2O3 catalyst for BPA oxidation via PMS activation. The formation mechanism of CuFe2O4-Fe2O3 is proposed. The performance of CuFe2O4-Fe2O3 as a PMS activator was compared with those of other catalysts and the results indicated that the performance was in the following order: CuFe2O4-Fe2O3 > CuFe2O4 > CoFe2O4 > CuBi2O4 > CuAl2O4 > DPA−Fe2O3 > MnFe2O4. A kinetic model with II mechanistic consideration of the influence of pH, PMS dosage and catalyst loading is developed to describe the degradation of BPA. The intrinsic rate constant (ki) was obtained from the kinetic study and the relationship between the pseudo first−order rate constant and ki was successfully established. The influence of water matrix species (i.e.Cl − , NO3 − , HCO3 − , PO4 3− and humic acid) on the BPA degradation rate was also investigated and the results indicated that Cl − and humic acid exerted noticeable reduction in the BPA degradation rate. The CuFe2O4-Fe2O3 catalyst exhibited excellent stability and could be reused several times without significant deterioration in performance.The third phase of this study involved the fabrication of an efficient bi−functional CuBi2O4 catalyst via a facile hydrothermal method to activate PMS and persulfate (PS) for benzotriazole (BTZ) removal. Characterization of the CuBi2O4 catalyst using XRD, FESEM, FTIR, BET and XPS revealed that it has a unique 3−D hierarchical structure with molecular formula of Cu1.2Bi1.6O3.6 and 2.4% w/w of CuO. The perfo...

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CoFe/SBA-15 catalyst coupled with peroxymonosulfate for heterogeneous catalytic degradation of rhodamine B in water

Cited by 33 publications

References 46 publications

Preparation and characterization of mesostructured cellular foam silica supported Cu–Ce mixed oxide catalysts for CO oxidation

Preparation and characterization of mesostructured cellular foam silica supported Cu–Ce mixed oxide catalysts for CO oxidation

Progress in the design of nanoporous adsorbent materials containing transition metals for the removal of contaminants of emerging concern

Activation of peroxymonosulfate by heterogeneous catalysts for the removal of organic pollutants in water

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