Efficient Methylene Blue Degradation by Activation of Peroxymonosulfate over Co(II) and/or Fe(II) Impregnated Montmorillonites
Abstract
:1. Introduction
2. Results and Discussion
2.1. Characterization of the Samples
2.2. Degradation Performance of MB by Montmorillonites/PMS
2.2.1. Adsorption of MB on Montmorillonites
2.2.2. Influence of Catalyst Dosage and Dye Concentration
2.2.3. Dominant Reactive Species
2.2.4. Influence of pH of Reaction
2.2.5. Leaching of Metals and Recyclability of Catalysts
3. Materials and Methods
3.1. Reactants and Materials
3.2. Preparation of the Fe-Co Impregnated Montmorillonites
3.3. Characterization of Samples
3.4. Catalytic Activity
4. Conclusions
Supplementary Materials
Author Contributions
Funding
Data Availability Statement
Conflicts of Interest
References
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Catalyst | Fe (wt% ± sd) | Fei (wt% ± sd) | Co (wt% ± sd) | (Fe + Co)i (wt% ± sd) |
---|---|---|---|---|
MK10 | 1.54 ± 0.04 | - | - | - |
MK10Fe | 7.70 ± 0.10 | 6.16 ± 0.10 (7.0) | - | 6.16 ± 0.10 (7.0) |
MK10Fe-Co | 4.32 ± 0.02 | 2.78 ± 0.04 (3.5) | 3.40 ± 0.10 (3.5) | 6.18 ± 0.10 (7.0) |
MK10Co | 1.45 ± 0.02 | - | 6.90 ± 0.14 (7.0) | 6.90 ± 0.14 (7.0) |
MPil | 0.77 ± 0.01 | - | - | - |
MPilFe | 6.74 ± 0.13 | 5.97 ± 0.13 (7.0) | - | 5.97 ± 0.13 (7.0) |
MPilFe-Co | 3.83 ± 0.11 | 3.06 ± 0.11 (3.5) | 3.45 ± 0.07 (3.5) | 6.51 ± 0.11 (7.0) |
MPilCo | 0.75 ± 0.01 | - | 6.97 ± 0.02 (7.0) | 6.97 ± 0.02 (7.0) |
Catalyst | SBET (m2/g) | Smic (m2/g) | Vp (cm3/g) | Vmes (cm3/g) | Vmic (cm3/g) | dmeso (nm) |
---|---|---|---|---|---|---|
MK10 | 231.7 | 14.2 | 0.360 | 0.340 | 0.006 | 6.5 |
MK10Fe | 200.1 | - | 0.318 | 0.300 | - | 6.2 |
MK10Fe-Co | 191.3 | - | 0.315 | 0.296 | - | 6.5 |
MK10Co | 161.8 | - | 0.289 | 0.271 | - | 6.6 |
MPil | 175.3 | 119.1 | 0.186 | 0.175 | 0.052 | 12.3 |
MPilFe | 143.8 | 80.3 | 0.156 | 0.102 | 0.047 | 9.4 |
MPilFe-Co | 141.9 | 85.0 | 0.170 | 0.107 | 0.037 | 12.1 |
MPilCo | 164.2 | 99.7 | 0.168 | 0.100 | 0.044 | 10.3 |
Catalyst | Ccat: 125 mg/L CMB: 0.078 mM | Ccat: 250 mg/L CMB: 0.078 mM | Ccat: 125 mg/L CMB: 0.052 mM | Ccat: 125 mg/L CMB: 0.156 mM |
---|---|---|---|---|
MK10 | 0.00632 | 0.01359 | - | - |
MK10Fe | 0.01021 | 0.03631 | - | - |
MK10Fe-Co | 0.05349 | 0.14652 | 0.09422 | 0.03417 |
MK10Co | 0.17178 | - | 0.39670 | 0.03423 |
MPil | 0.00232 | 0.00820 | - | - |
MPilFe | 0.00420 | 0.00764 | - | - |
MPilFe-Co | 0.01619 | 0.03095 | - | - |
MPilCo | 0.04809 | 0.06588 | 0.10713 | 0.02824 |
Reference | Catalyst | Catalyst/MB Ratio (mg/L/mg/L) | PMS/MB Molar Ratio | Removal Efficiency |
---|---|---|---|---|
[29] | Ag-La0.8Ca0.2Fe0.94O3−δ perovskite | 100 | 12.5 | 90% in 40 min |
[30] | Mixed conducting perovskite | 5 | 38.3 | 100% in 15 min |
[31] | CoFe2O4-MOF | 2.5 | 14.5 | 95% in 60 min |
[32] | Cu@Co-MOF | 3 | 20 | 100% in 30 min |
[33] | NbCo-MOF | 10 | 15 | 100% in 30 min |
[34] | Mn3O4 nanoparticles | 20 | 160 | 86% in 20 min |
[35] | MnCo2O4.5 nanoparticles | 1 | 26 | 100% in 25 min |
[36] | Co nanoparticles | 2 | 10.5 | 100% in 10 min |
[37] | Activated carbon composite | 10 | 104 | 100% in 60 min |
[38] | CuFe2O4@GO | 10 | 13 | 93% in 30 min |
[39] | Reduced Graphene oxide | 50 | 100 | 100% in 120 min |
This work | MK10Co | 5 | 3 | 100% in 20 min |
This work | MK10Fe-Co | 5 | 3 | 92% in 45 min |
This work | MK10Co | 7.5 | 3 | 100% in 15 min |
This work | MK10Fe-Co | 7.5 | 3 | 100% in 45 min |
This work | MPilCo | 7.5 | 3 | 100% in 45 min |
This work | MK10Fe-Co | 10 | 3 | 100% in 20 min |
This work | MPilCo | 10 | 3 | 100% in 60 min |
This work | MPilFe-Co | 10 | 3 | 85% in 60 min |
Catalyst | Iron (mg/L) | Iron * (%) | Cobalt (mg/L) | Cobalt * (%) |
---|---|---|---|---|
MK10Fe-Co | 0.0093 | 1.74 | 0.573 | 13.48 |
MPilCo | 0.0023 | 0.24 | 1.156 | 13.27 |
MK10Co | 0.0032 | 0.2 | 1.154 | 17.83 |
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Barrios-Bermúdez, N.; Cerpa-Naranjo, A.; Rojas-Cervantes, M.L. Efficient Methylene Blue Degradation by Activation of Peroxymonosulfate over Co(II) and/or Fe(II) Impregnated Montmorillonites. Catalysts 2024, 14, 479. https://doi.org/10.3390/catal14080479
Barrios-Bermúdez N, Cerpa-Naranjo A, Rojas-Cervantes ML. Efficient Methylene Blue Degradation by Activation of Peroxymonosulfate over Co(II) and/or Fe(II) Impregnated Montmorillonites. Catalysts. 2024; 14(8):479. https://doi.org/10.3390/catal14080479
Chicago/Turabian StyleBarrios-Bermúdez, Niurka, Arisbel Cerpa-Naranjo, and María Luisa Rojas-Cervantes. 2024. "Efficient Methylene Blue Degradation by Activation of Peroxymonosulfate over Co(II) and/or Fe(II) Impregnated Montmorillonites" Catalysts 14, no. 8: 479. https://doi.org/10.3390/catal14080479