Green Zinc Oxide (ZnO) Nanoparticle Synthesis Using Mangrove Leaf Extract from <i>Avicenna marina</i>: Properties and Application for the Removal of Toxic Metal Ions (Cd<sup>2+</sup> and Pb<sup>2+</sup>)
This work used a variety of experimental studies to explore the elimination of cadmium and lead ions from aqueous solutions using a novel method for the biosynthesis of nanoparticles of zinc oxide sorbents (ZnO-NPs) from mangrove leaf extract. The influences of important factors affecting the adsorp...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-01-01
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| Series: | Water |
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| Online Access: | https://www.mdpi.com/2073-4441/15/3/455 |
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| author | Bandar A. Al-Mur |
| author_facet | Bandar A. Al-Mur |
| author_sort | Bandar A. Al-Mur |
| collection | DOAJ |
| description | This work used a variety of experimental studies to explore the elimination of cadmium and lead ions from aqueous solutions using a novel method for the biosynthesis of nanoparticles of zinc oxide sorbents (ZnO-NPs) from mangrove leaf extract. The influences of important factors affecting the adsorption technique were determined, including the pH value, contact duration, the initial concentration of metal ions, nano-adsorbent dose, different temperatures, and interfering ions. To confirm the formation of synthesized ZnO NPs and validate the properties of green-synthesized sorbents, a variety of analytical methods were used, including UV–vis spectroscopy, X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), and energy-dispersive X-ray spectroscopy (EDX). The results showed that the average diameter of the ZnO-NPs was approximately 29.1 nm (spherical at the nano-size regime). The adsorption reaction rate was examined by comparing pseudo-second order against pseudo-first order templates. From the observed records, the adsorption reaction of Cd<sup>2+</sup> and Pb<sup>2+</sup> on the ZnO-NPs fitted well with the pseudo-second order template. Freundlich, Langmuir, Dubinin–Radushkevich, and Tempkin equilibrium isotherm models were used to evaluate the sorption of Cd<sup>2+</sup> and Pb<sup>2+</sup> onto the sorbent material. Based on the parameters extracted from each model, as well as the model-fitting values, the preferential isotherms for Pb<sup>2+</sup> and Cd<sup>2+</sup> ion adsorption on ZnO-NPs were the Dubinin–Radushkevich and Langmuir models, respectively. ZnO-NPs have the potential to be used as an effective and promising adsorbent material for eliminating metal ions from water solutions. |
| first_indexed | 2024-03-11T09:19:45Z |
| format | Article |
| id | doaj.art-4b2bb28938754c03b62079fb80605543 |
| institution | Directory Open Access Journal |
| issn | 2073-4441 |
| language | English |
| last_indexed | 2024-03-11T09:19:45Z |
| publishDate | 2023-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Water |
| spelling | doaj.art-4b2bb28938754c03b62079fb806055432023-11-16T18:22:53ZengMDPI AGWater2073-44412023-01-0115345510.3390/w15030455Green Zinc Oxide (ZnO) Nanoparticle Synthesis Using Mangrove Leaf Extract from <i>Avicenna marina</i>: Properties and Application for the Removal of Toxic Metal Ions (Cd<sup>2+</sup> and Pb<sup>2+</sup>)Bandar A. Al-Mur0Department of Environmental Sciences, Faculty of Meteorology, Environment and Arid Land Agriculture, King Abdulaziz University, Jeddah 21589, Saudi ArabiaThis work used a variety of experimental studies to explore the elimination of cadmium and lead ions from aqueous solutions using a novel method for the biosynthesis of nanoparticles of zinc oxide sorbents (ZnO-NPs) from mangrove leaf extract. The influences of important factors affecting the adsorption technique were determined, including the pH value, contact duration, the initial concentration of metal ions, nano-adsorbent dose, different temperatures, and interfering ions. To confirm the formation of synthesized ZnO NPs and validate the properties of green-synthesized sorbents, a variety of analytical methods were used, including UV–vis spectroscopy, X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), and energy-dispersive X-ray spectroscopy (EDX). The results showed that the average diameter of the ZnO-NPs was approximately 29.1 nm (spherical at the nano-size regime). The adsorption reaction rate was examined by comparing pseudo-second order against pseudo-first order templates. From the observed records, the adsorption reaction of Cd<sup>2+</sup> and Pb<sup>2+</sup> on the ZnO-NPs fitted well with the pseudo-second order template. Freundlich, Langmuir, Dubinin–Radushkevich, and Tempkin equilibrium isotherm models were used to evaluate the sorption of Cd<sup>2+</sup> and Pb<sup>2+</sup> onto the sorbent material. Based on the parameters extracted from each model, as well as the model-fitting values, the preferential isotherms for Pb<sup>2+</sup> and Cd<sup>2+</sup> ion adsorption on ZnO-NPs were the Dubinin–Radushkevich and Langmuir models, respectively. ZnO-NPs have the potential to be used as an effective and promising adsorbent material for eliminating metal ions from water solutions.https://www.mdpi.com/2073-4441/15/3/455adsorptionZnO-NPskinetics modelsisotherm models |
| spellingShingle | Bandar A. Al-Mur Green Zinc Oxide (ZnO) Nanoparticle Synthesis Using Mangrove Leaf Extract from <i>Avicenna marina</i>: Properties and Application for the Removal of Toxic Metal Ions (Cd<sup>2+</sup> and Pb<sup>2+</sup>) Water adsorption ZnO-NPs kinetics models isotherm models |
| title | Green Zinc Oxide (ZnO) Nanoparticle Synthesis Using Mangrove Leaf Extract from <i>Avicenna marina</i>: Properties and Application for the Removal of Toxic Metal Ions (Cd<sup>2+</sup> and Pb<sup>2+</sup>) |
| title_full | Green Zinc Oxide (ZnO) Nanoparticle Synthesis Using Mangrove Leaf Extract from <i>Avicenna marina</i>: Properties and Application for the Removal of Toxic Metal Ions (Cd<sup>2+</sup> and Pb<sup>2+</sup>) |
| title_fullStr | Green Zinc Oxide (ZnO) Nanoparticle Synthesis Using Mangrove Leaf Extract from <i>Avicenna marina</i>: Properties and Application for the Removal of Toxic Metal Ions (Cd<sup>2+</sup> and Pb<sup>2+</sup>) |
| title_full_unstemmed | Green Zinc Oxide (ZnO) Nanoparticle Synthesis Using Mangrove Leaf Extract from <i>Avicenna marina</i>: Properties and Application for the Removal of Toxic Metal Ions (Cd<sup>2+</sup> and Pb<sup>2+</sup>) |
| title_short | Green Zinc Oxide (ZnO) Nanoparticle Synthesis Using Mangrove Leaf Extract from <i>Avicenna marina</i>: Properties and Application for the Removal of Toxic Metal Ions (Cd<sup>2+</sup> and Pb<sup>2+</sup>) |
| title_sort | green zinc oxide zno nanoparticle synthesis using mangrove leaf extract from i avicenna marina i properties and application for the removal of toxic metal ions cd sup 2 sup and pb sup 2 sup |
| topic | adsorption ZnO-NPs kinetics models isotherm models |
| url | https://www.mdpi.com/2073-4441/15/3/455 |
| work_keys_str_mv | AT bandaraalmur greenzincoxideznonanoparticlesynthesisusingmangroveleafextractfromiavicennamarinaipropertiesandapplicationfortheremovaloftoxicmetalionscdsup2supandpbsup2sup |