A new methodology to evaluate adsorption capacity on nanomaterials

Antilén, Mónica; Amiama, Fernanda; Otaiza, Marco; Armijo, Francisco; Escudey, Mauricio; Pizarro, Carmen; Arancibia‐Miranda, Nicolás

doi:10.1007/s11051-015-3016-3

Cited by 12 publications

(11 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Among the TE pollutants, Cd and Cu are the most common and are frequently studied because of their toxicity and abundance in the effluents [1][2][3][4][5][6][7][8][9][10]. The WHO has stipulated that the maximum concentrations of Cd and Cu in water for human consumption should not exceed 0.01 and 1.5 mg·L -1 , respectively [11].…”

Section: Introductionmentioning

confidence: 99%

Effect of cations in the background electrolyte on the adsorption kinetics of copper and cadmium and the isoelectric point of imogolite

Arancibia‐Miranda

Silva-Yumi²,

Escudey

2015

Journal of Hazardous Materials

Self Cite

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

Effect of cations in the background electrolyte on the adsorption kinetics of copper and cadmium and the isoelectric point of imogolite

Arancibia‐Miranda

Silva-Yumi²,

Escudey

2015

Journal of Hazardous Materials

Self Cite

View full text Add to dashboard Cite

“…As the hydroxyl radicals (OH − ) reacts with the whole of valance bond, which generates the hydroxyl ions as equation 5 & 6. It is postulated that the highest oxidation potential of OH - radicals (E0 = + 3.06 V) , which is a main cause of mineralization of numerous organic dye molecules 37 39 .…”

Section: Resultsmentioning

confidence: 99%

“…In this direction, Antilen et al . 39 explained the adsorption capacity of different type of NMs for the removal of heavy metals and dyes. For the measurement of adsorption capacity, efficiency, isotherm, kinetic parameter are employed and discussed in detail.…”

mentioning

confidence: 99%

Photocatalytic TMO-NMs adsorbent: Temperature-Time dependent Safranine degradation, sorption study validated under optimized effective equilibrium models parameter with standardized statistical analysis

Wahab

Khan

Kaushik

et al. 2017

Sci Rep

View full text Add to dashboard Cite

In this paper, chemically synthesized copper oxide nanoparticles (CuO-NPs), were employed for two processes: one is photocatalytic degradation and second one adsorption for the sorption of safranine (SA) dye in an aqueous medium at pH = 12.01. The optimized analytes amount (nano-adsorbent = 0.10 g, conc. range of SA dye 56.13 ppm to 154.37 ppm, pH = 12.01, temperature 303 K) reached to equilibrium point in 80 min, which acquired for chemical adsorption-degradation reactions. The degredated SA dye data’s recorded by UV-visible spectroscopy for the occurrence of TMO-NMs of CuO-NPs at anticipated period of interval. The feasible performance of CuO-NPs was admirable, shows good adsorption capacity qm = 53.676 mg g−1 and most convenient to best fitted results establish by linear regression equation, corresponded for selected kinetic model (pseudo second order (R2 = 0.9981), equilibrium isotherm models (Freundlich, Langmuir, Dubnin-Radushkevich (D-R), Temkin, H-J and Halsey), and thermodynamic parameters (∆H° = 75461.909 J mol−1, ∆S° = 253.761 J mol−1, ∆G° = −1427.93 J mol−1, Ea = 185.142 J mol−1) with error analysis. The statistical study revealed that CuO-NPs was an effective adsorbent certified photocatalytic efficiency (η = 84.88%) for degradation of SA dye, exhibited more feasibility and good affinity toward adsorbate, the sorption capacity increases with increased temperature at equilibrium point.

show abstract

“…Voltammetric approach is especially attractive when adsorbent has nanometric particle size, because in this case adsorbent/adsorbate separation is very hard, as pointed by Antilén et al . 18. The higher temporal resolution provided by voltammetric method could be used for unambiguous establishment of kinetics and mechanisms of adsorption, since low time resolution adsorption curves usually provides acceptable R 2 values for more than one adsorption model 19,22 leading to doubts about the correct adsorption kinetics model or mechanism.…”

Section: Resultsmentioning

confidence: 99%

“…Antilén et al. 18 used cyclic voltammetry to study Cu 2+ adsorption on a nanostructured aluminosilicate and they confirmed the advantages of voltammetry to study this system. However, the use of voltammetry to study metal ions adsorption can be drastically expanded and voltammetry could even replace AAS when adsorption of electroactive metal ions is studied.…”

Section: Introductionmentioning

confidence: 92%

Could Voltammetry be an Effective Alternative Technique to Study Adsorption Kinetics of Electroactive Metal Ions?

et al. 2015

View full text Add to dashboard Cite

The suitability of LSV to study adsorption kinetics of metal ions was evaluated using Cu2+ adsorption on Amberlite® IR‐120 as a model system. LSV provided results in agreement with conventional batch method with remarkable decreasing on analysis time and reagents consumption, since no adsorbent/adsorbate separation is required. Adsorption curves can be obtained in situ using only one portion of adsorbate solution. LSV provides higher temporal resolution for adsorption curves, which is indispensable to evaluate adsorption mechanisms and the performance of new adsorbent materials. Therefore, LSV not only saves time and reagents but also provides better quality of kinetic adsorption data.

show abstract

A new methodology to evaluate adsorption capacity on nanomaterials

Cited by 12 publications

References 19 publications

Effect of cations in the background electrolyte on the adsorption kinetics of copper and cadmium and the isoelectric point of imogolite

Effect of cations in the background electrolyte on the adsorption kinetics of copper and cadmium and the isoelectric point of imogolite

Photocatalytic TMO-NMs adsorbent: Temperature-Time dependent Safranine degradation, sorption study validated under optimized effective equilibrium models parameter with standardized statistical analysis

Could Voltammetry be an Effective Alternative Technique to Study Adsorption Kinetics of Electroactive Metal Ions?

Contact Info

Product

Resources

About