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Two-Dimensional Infrared Correlation Spectroscopy, Conductor-like Screening Model for Real Solvents, and Density Functional Theory Study on the Adsorption Mechanism of Polyvinylpolypyrrolidone for Effective Phenol Removal in an Aqueous Medium

The discharge of industrial effluents, such as phenol, into aquatic and soil environments is a global problem due to its serious negative impacts on human health and aquatic ecosystems. In this study, the ability of polyvinylpolypyrrolidone (PVPP) to remove phenol from an aqueous medium was inve...

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Main Authors: Mohammad Alwi, Muhammad Ammar, Abdullah, Erna Normaya, Ismail, Hakimah, Iqbal, Anwar, Mat Piah, Mohd Bijarimi, Abu Samah, Mohd Armi, Ahmad, Mohammad Norazmi
Format: Article
Language:English
Published: American Chemical Society (ACS) 2021
Subjects:
QD Chemistry
Online Access:http://irep.iium.edu.my/92447/1/92447_Two-Dimensional%20Infrared%20Correlation%20Spectroscopy.pdf
http://irep.iium.edu.my/92447/
https://pubs.acs.org/doi/10.1021/acsomega.1c02699
https://doi.org/10.1021/acsomega.1c02699
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spelling my.iium.irep.924472021-09-23T02:38:38Z http://irep.iium.edu.my/92447/ Two-Dimensional Infrared Correlation Spectroscopy, Conductor-like Screening Model for Real Solvents, and Density Functional Theory Study on the Adsorption Mechanism of Polyvinylpolypyrrolidone for Effective Phenol Removal in an Aqueous Medium Mohammad Alwi, Muhammad Ammar Abdullah, Erna Normaya Ismail, Hakimah Iqbal, Anwar Mat Piah, Mohd Bijarimi Abu Samah, Mohd Armi Ahmad, Mohammad Norazmi QD Chemistry The discharge of industrial effluents, such as phenol, into aquatic and soil environments is a global problem due to its serious negative impacts on human health and aquatic ecosystems. In this study, the ability of polyvinylpolypyrrolidone (PVPP) to remove phenol from an aqueous medium was investigated. The results showed that a significant proportion of phenol (up to 74.91%) was removed using PVPP at pH 6.5. Isotherm adsorption experiments of phenol on PVPP indicated that the best-fit adsorption was obtained using Langmuir models. The response peaks of the hydroxyl groups of phenol (OH) and the carboxyl groups (i.e., CO) of PVPP were altered, indicating the formation of a hydrogen bond between the PVPP and phenol during phenol removal, as characterized using 1D and 2D IR spectroscopy. The resulting complexes were successfully characterized based on their thermodynamic properties, Mulliken charge, and electronic transition using the DFT approach. To clarify the types of interactions taking place in the complex systems, quantum theory of atoms in molecules (QTAIM) analysis, reduced density gradient noncovalent interaction (RDG-NCI) approach, and conductor-like screening model for real solvents (COSMO-RS) approach were also successfully calculated. The results showed that the interactions that occurred in the process of removing phenol by PVPP were through hydrogen bonding (based on RDG-NCI and COSMO-RS), which was identified as an intermediate type (∇2ρ(r) > 0 and H < 0, QTAIM). To gain a deeper understanding of how these interactions occurred, further characterization was performed based on adsorption mechanisms using molecular electrostatic potential, global reactivity, and local reactivity descriptors. The results showed that during hydrogen bond formation, PVPP acts as a nucleophile, whereas phenol acts as an electrophile and the O9 atom (i.e., donor electron) reacts with the H22 atom (i.e., acceptor electron). American Chemical Society (ACS) 2021-09-21 Article PeerReviewed application/pdf en http://irep.iium.edu.my/92447/1/92447_Two-Dimensional%20Infrared%20Correlation%20Spectroscopy.pdf Mohammad Alwi, Muhammad Ammar and Abdullah, Erna Normaya and Ismail, Hakimah and Iqbal, Anwar and Mat Piah, Mohd Bijarimi and Abu Samah, Mohd Armi and Ahmad, Mohammad Norazmi (2021) Two-Dimensional Infrared Correlation Spectroscopy, Conductor-like Screening Model for Real Solvents, and Density Functional Theory Study on the Adsorption Mechanism of Polyvinylpolypyrrolidone for Effective Phenol Removal in an Aqueous Medium. ACS Omega. A-N. E-ISSN 2470-1343 https://pubs.acs.org/doi/10.1021/acsomega.1c02699 https://doi.org/10.1021/acsomega.1c02699
institution Universiti Islam Antarabangsa Malaysia
building IIUM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider International Islamic University Malaysia
content_source IIUM Repository (IREP)
url_provider http://irep.iium.edu.my/
language English
topic QD Chemistry
spellingShingle QD Chemistry
Mohammad Alwi, Muhammad Ammar
Abdullah, Erna Normaya
Ismail, Hakimah
Iqbal, Anwar
Mat Piah, Mohd Bijarimi
Abu Samah, Mohd Armi
Ahmad, Mohammad Norazmi
Two-Dimensional Infrared Correlation Spectroscopy, Conductor-like Screening Model for Real Solvents, and Density Functional Theory Study on the Adsorption Mechanism of Polyvinylpolypyrrolidone for Effective Phenol Removal in an Aqueous Medium
description The discharge of industrial effluents, such as phenol, into aquatic and soil environments is a global problem due to its serious negative impacts on human health and aquatic ecosystems. In this study, the ability of polyvinylpolypyrrolidone (PVPP) to remove phenol from an aqueous medium was investigated. The results showed that a significant proportion of phenol (up to 74.91%) was removed using PVPP at pH 6.5. Isotherm adsorption experiments of phenol on PVPP indicated that the best-fit adsorption was obtained using Langmuir models. The response peaks of the hydroxyl groups of phenol (OH) and the carboxyl groups (i.e., CO) of PVPP were altered, indicating the formation of a hydrogen bond between the PVPP and phenol during phenol removal, as characterized using 1D and 2D IR spectroscopy. The resulting complexes were successfully characterized based on their thermodynamic properties, Mulliken charge, and electronic transition using the DFT approach. To clarify the types of interactions taking place in the complex systems, quantum theory of atoms in molecules (QTAIM) analysis, reduced density gradient noncovalent interaction (RDG-NCI) approach, and conductor-like screening model for real solvents (COSMO-RS) approach were also successfully calculated. The results showed that the interactions that occurred in the process of removing phenol by PVPP were through hydrogen bonding (based on RDG-NCI and COSMO-RS), which was identified as an intermediate type (∇2ρ(r) > 0 and H < 0, QTAIM). To gain a deeper understanding of how these interactions occurred, further characterization was performed based on adsorption mechanisms using molecular electrostatic potential, global reactivity, and local reactivity descriptors. The results showed that during hydrogen bond formation, PVPP acts as a nucleophile, whereas phenol acts as an electrophile and the O9 atom (i.e., donor electron) reacts with the H22 atom (i.e., acceptor electron).
format Article
author Mohammad Alwi, Muhammad Ammar
Abdullah, Erna Normaya
Ismail, Hakimah
Iqbal, Anwar
Mat Piah, Mohd Bijarimi
Abu Samah, Mohd Armi
Ahmad, Mohammad Norazmi
author_facet Mohammad Alwi, Muhammad Ammar
Abdullah, Erna Normaya
Ismail, Hakimah
Iqbal, Anwar
Mat Piah, Mohd Bijarimi
Abu Samah, Mohd Armi
Ahmad, Mohammad Norazmi
author_sort Mohammad Alwi, Muhammad Ammar
title Two-Dimensional Infrared Correlation Spectroscopy, Conductor-like Screening Model for Real Solvents, and Density Functional Theory Study on the Adsorption Mechanism of Polyvinylpolypyrrolidone for Effective Phenol Removal in an Aqueous Medium
title_short Two-Dimensional Infrared Correlation Spectroscopy, Conductor-like Screening Model for Real Solvents, and Density Functional Theory Study on the Adsorption Mechanism of Polyvinylpolypyrrolidone for Effective Phenol Removal in an Aqueous Medium
title_full Two-Dimensional Infrared Correlation Spectroscopy, Conductor-like Screening Model for Real Solvents, and Density Functional Theory Study on the Adsorption Mechanism of Polyvinylpolypyrrolidone for Effective Phenol Removal in an Aqueous Medium
title_fullStr Two-Dimensional Infrared Correlation Spectroscopy, Conductor-like Screening Model for Real Solvents, and Density Functional Theory Study on the Adsorption Mechanism of Polyvinylpolypyrrolidone for Effective Phenol Removal in an Aqueous Medium
title_full_unstemmed Two-Dimensional Infrared Correlation Spectroscopy, Conductor-like Screening Model for Real Solvents, and Density Functional Theory Study on the Adsorption Mechanism of Polyvinylpolypyrrolidone for Effective Phenol Removal in an Aqueous Medium
title_sort two-dimensional infrared correlation spectroscopy, conductor-like screening model for real solvents, and density functional theory study on the adsorption mechanism of polyvinylpolypyrrolidone for effective phenol removal in an aqueous medium
publisher American Chemical Society (ACS)
publishDate 2021
url http://irep.iium.edu.my/92447/1/92447_Two-Dimensional%20Infrared%20Correlation%20Spectroscopy.pdf
http://irep.iium.edu.my/92447/
https://pubs.acs.org/doi/10.1021/acsomega.1c02699
https://doi.org/10.1021/acsomega.1c02699
_version_ 1712284867995107328
score 13.223943

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