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Research Article
Modeling of adsorption of aluminum on macrocyclic porphyrins H2TPP and H2TTPP: Phenomenological investigation of aluminum (Ⅲ)-porphyrin complex at the molecular level
Mohamed Ben Yahia
University of Monastir
Corresponding Author
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This article presents a series of adsorption isotherms of aluminum chloride and aluminum sulfate on two promising adsorbents named ‘porphyrins H2TPP and H2TTPP’ which were carried out to prove new insights about the complexation mechanism. The adsorbed masses of aluminum (Ⅲ) on the tested adsorbents were controlled at three solution temperatures using the well-known QCM protocol. The isotherms curves of each adsorption system were examined in order to check the performance of the adsorption materials for the metalloporphyrin achievement. Thus, a mono-layer process was concluded for aluminium chloride adsorption whereas; a multi-layer adsorption mechanism was discovered in the case of aluminum sulfate. The microscopic investigation of the two adsorption mechanisms was established through innovative physical modeling of the adsorption isotherms. Overall, the theoretical investigation showed that a multi-interaction mechanism occurred in the adsorption of aluminum ions onto the two tested porphyrins. The behavior of the paramount parameter density of the occupied porphyrins sites explained the endothermic feature of the studied process. The adopted models provided an excellent description of the interactions between the adsorbates and adsorbent via a calculation of the adsorption energy, indicating that aluminum particles were chemically bonded to H2TTPP. Interestingly, the theoretical interpretations showed that AlCl3 and H2TTPP can be suggested for a genuine industrial application of aluminum (Ⅲ)-porphyrin complex.
Keywords
Adsorption isotherms, metal-porphyrin complex, Quartz crystal microbalance, Phenomenological modeling
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This preprint is under consideration at Scientific Reports. A preprint is a preliminary version of a manuscript that has not completed peer review at a journal. Research Square does not conduct peer review prior to posting preprints. The posting of a preprint on this server should not be interpreted as an endorsement of its validity or suitability for dissemination as established information or for guiding clinical practice.
Learn more about In Review
Research Article
Modeling of adsorption of aluminum on macrocyclic porphyrins H2TPP and H2TTPP: Phenomenological investigation of aluminum (Ⅲ)-porphyrin complex at the molecular level
Mohamed Ben Yahia
University of Monastir
Corresponding Author
Badges
Prescreen
This manuscript passed our Prescreen assessment
Complete author information
Appropriate declaration statements
Potential risks to human health
Prescreen
Peer Review Timeline
CURRENT STATUS: Under Review
Version 1
Posted 12 Jan, 2021
No community comments so far
Editor assigned
On 14 Jan, 2021
Editor invited
On 07 Jan, 2021
Submission checks complete
On 07 Jan, 2021
First submitted
On 02 Jan, 2021
Metrics
Comments: 0
PDF Downloads: ...
HTML Views: ...
License:
This work is licensed under a CC BY 4.0 License. Read Full License
This article presents a series of adsorption isotherms of aluminum chloride and aluminum sulfate on two promising adsorbents named ‘porphyrins H2TPP and H2TTPP’ which were carried out to prove new insights about the complexation mechanism. The adsorbed masses of aluminum (Ⅲ) on the tested adsorbents were controlled at three solution temperatures using the well-known QCM protocol. The isotherms curves of each adsorption system were examined in order to check the performance of the adsorption materials for the metalloporphyrin achievement. Thus, a mono-layer process was concluded for aluminium chloride adsorption whereas; a multi-layer adsorption mechanism was discovered in the case of aluminum sulfate. The microscopic investigation of the two adsorption mechanisms was established through innovative physical modeling of the adsorption isotherms. Overall, the theoretical investigation showed that a multi-interaction mechanism occurred in the adsorption of aluminum ions onto the two tested porphyrins. The behavior of the paramount parameter density of the occupied porphyrins sites explained the endothermic feature of the studied process. The adopted models provided an excellent description of the interactions between the adsorbates and adsorbent via a calculation of the adsorption energy, indicating that aluminum particles were chemically bonded to H2TTPP. Interestingly, the theoretical interpretations showed that AlCl3 and H2TTPP can be suggested for a genuine industrial application of aluminum (Ⅲ)-porphyrin complex.
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
Figure 6
Due to technical limitations, full-text HTML conversion of this manuscript could not be completed. However, the manuscript can be downloaded and accessed as a PDF.