Phenol-Formaldehyde/Pyrazole Composite: Synthesis, Characterization, and Evaluation of its Chromate Removal Efficiency

In this study, we report the successful synthesis of a phenol-formaldehyde-pyrazole (PF–PYZ) compound through the surface functionalization of phenol-formaldehyde (PF) with pyrazole (PYZ). The resulting mixture was subjected to comprehensive characterization using a range of analytical techniques, i...

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Published in:ACS omega 2024-03, Vol.9 (9), p.10090-10098
Main Authors: Abdou, Moaz M., Abbas, Dalia M., Ismail, Enas Arafa, Zahran, Ahmed, Abu-Rayyan, Ahmed, Bahtiti, Nawal H., Ragab, Ahmed H., Alshwyeh, Hussah A., Hassan, Abeer A., Soliman, Abdel-Ghany A.
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container_start_page 10090
container_title ACS omega
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creator Abdou, Moaz M.
Abbas, Dalia M.
Ismail, Enas Arafa
Zahran, Ahmed
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Bahtiti, Nawal H.
Ragab, Ahmed H.
Alshwyeh, Hussah A.
Hassan, Abeer A.
Soliman, Abdel-Ghany A.
description In this study, we report the successful synthesis of a phenol-formaldehyde-pyrazole (PF–PYZ) compound through the surface functionalization of phenol-formaldehyde (PF) with pyrazole (PYZ). The resulting mixture was subjected to comprehensive characterization using a range of analytical techniques, including X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and thermogravimetric analysis (TGA). The newly synthesized PF–PYZ material effectively removes Cr­(VI) ions. Notably, a substantial elimination efficiency of 96% was achieved after just 60 min of contact time. The strategic incorporation of pyrazole (PYZ) as the principal functionalizing agent contributed to this exceptional performance. Notably, the functionalized PYZ sites were strategically positioned on the surface of PF, rendering them readily accessible to metal ions. Through rigorous testing, the optimal sorption capacity of PF–PYZ for Cr­(VI) ions was quantified at 0.872 mmol Cr­(VI)/g, highlighting the material’s superior adsorption capabilities. The practical utility of PF–PYZ was further established through a reusability test, which demonstrated that the chromate capacity remained remarkably stable at 0.724 mequiv Cr­(VI)/g over 20 consecutive cycles. This resilience underscores the robustness of the resin, indicating its potential for repeated regeneration and reuse without a significant capacity loss. Our work presents a novel approach to functionalizing phenol-formaldehyde with pyrazole, creating PF–PYZ, a highly efficient material for removing Cr­(VI) ions. The compound’s facile synthesis, exceptional removal performance, and excellent reusability collectively underscore its promising potential for various water treatments, especially oil field and environmental remediation applications.
doi_str_mv 10.1021/acsomega.3c05432
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title Phenol-Formaldehyde/Pyrazole Composite: Synthesis, Characterization, and Evaluation of its Chromate Removal Efficiency
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