Fabrication and optimization calix[8]arene-PbS nanoadsorbents for the adsorption of methylene blue: isotherms, kinetics and thermodynamics studies
The present study aims to determine the adsorption behaviour of methylene blue (MB) dye based on calix[8]arene-modified lead sulphide (PbS) nanoadsorbents under optimal conditions. Response surface methodology (RSM) was executed to evaluate the interactive effect of three factors (adsorbent dosage,...
| Main Authors: | , , , , , |
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| Format: | Article |
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Elsevier
2022
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| Online Access: | http://psasir.upm.edu.my/id/eprint/101450/ |
| _version_ | 1848863563164155904 |
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| author | Rosly, Nor Zida Ishak, Syahirah Abdullah, Abdul Halim Ahmad Kamarudin, Mazliana Ashari, Siti Efliza Alang Ahmad, Shahrul Ainliah |
| author_facet | Rosly, Nor Zida Ishak, Syahirah Abdullah, Abdul Halim Ahmad Kamarudin, Mazliana Ashari, Siti Efliza Alang Ahmad, Shahrul Ainliah |
| author_sort | Rosly, Nor Zida |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | The present study aims to determine the adsorption behaviour of methylene blue (MB) dye based on calix[8]arene-modified lead sulphide (PbS) nanoadsorbents under optimal conditions. Response surface methodology (RSM) was executed to evaluate the interactive effect of three factors (adsorbent dosage, contact time, and pH) on the adsorption of MB dye using a central composite design (CCD). The optimised values for adsorbent dosage, contact time, and pH solution were found to be 45.00 mg of calix[8]arene-modified PbS, contact time of 180 min, and pH 6. This study reports the results of batch adsorption experiments, which include the adsorption capacity, kinetics, and isotherm of the MB adsorption process. Pseudo-first order and pseudo-second order were demonstrated for their quality to fit the data. Pseudo-second order was the best in fitting the adsorption data with the higher R2 values (R2 > 0.928), indicating chemisorption to be the mechanism of adsorption. The Langmuir and Freundlich equilibrium models were employed to determine the isotherm parameters. The equilibrium assessment illustrated that the Langmuir isotherm model fitted well with the adsorption data, and a maximum MB adsorption capacity of 11.90 mg/g was achieved. The characterisation studies with EDX, FESEM, and FTIR indicated a successful synthesis of calix[8]arene-modified PbS. |
| first_indexed | 2025-11-15T13:34:54Z |
| format | Article |
| id | upm-101450 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-15T13:34:54Z |
| publishDate | 2022 |
| publisher | Elsevier |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-1014502023-08-15T04:16:53Z http://psasir.upm.edu.my/id/eprint/101450/ Fabrication and optimization calix[8]arene-PbS nanoadsorbents for the adsorption of methylene blue: isotherms, kinetics and thermodynamics studies Rosly, Nor Zida Ishak, Syahirah Abdullah, Abdul Halim Ahmad Kamarudin, Mazliana Ashari, Siti Efliza Alang Ahmad, Shahrul Ainliah The present study aims to determine the adsorption behaviour of methylene blue (MB) dye based on calix[8]arene-modified lead sulphide (PbS) nanoadsorbents under optimal conditions. Response surface methodology (RSM) was executed to evaluate the interactive effect of three factors (adsorbent dosage, contact time, and pH) on the adsorption of MB dye using a central composite design (CCD). The optimised values for adsorbent dosage, contact time, and pH solution were found to be 45.00 mg of calix[8]arene-modified PbS, contact time of 180 min, and pH 6. This study reports the results of batch adsorption experiments, which include the adsorption capacity, kinetics, and isotherm of the MB adsorption process. Pseudo-first order and pseudo-second order were demonstrated for their quality to fit the data. Pseudo-second order was the best in fitting the adsorption data with the higher R2 values (R2 > 0.928), indicating chemisorption to be the mechanism of adsorption. The Langmuir and Freundlich equilibrium models were employed to determine the isotherm parameters. The equilibrium assessment illustrated that the Langmuir isotherm model fitted well with the adsorption data, and a maximum MB adsorption capacity of 11.90 mg/g was achieved. The characterisation studies with EDX, FESEM, and FTIR indicated a successful synthesis of calix[8]arene-modified PbS. Elsevier 2022 Article PeerReviewed Rosly, Nor Zida and Ishak, Syahirah and Abdullah, Abdul Halim and Ahmad Kamarudin, Mazliana and Ashari, Siti Efliza and Alang Ahmad, Shahrul Ainliah (2022) Fabrication and optimization calix[8]arene-PbS nanoadsorbents for the adsorption of methylene blue: isotherms, kinetics and thermodynamics studies. Journal of Saudi Chemical Society, 26 (1). art. no. 101402. pp. 1-16. ISSN 1319-6103; ESSN: 2212-4640 https://www.sciencedirect.com/science/article/pii/S1319610321002076 10.1016/j.jscs.2021.101402 |
| spellingShingle | Rosly, Nor Zida Ishak, Syahirah Abdullah, Abdul Halim Ahmad Kamarudin, Mazliana Ashari, Siti Efliza Alang Ahmad, Shahrul Ainliah Fabrication and optimization calix[8]arene-PbS nanoadsorbents for the adsorption of methylene blue: isotherms, kinetics and thermodynamics studies |
| title | Fabrication and optimization calix[8]arene-PbS nanoadsorbents for the adsorption of methylene blue: isotherms, kinetics and thermodynamics studies |
| title_full | Fabrication and optimization calix[8]arene-PbS nanoadsorbents for the adsorption of methylene blue: isotherms, kinetics and thermodynamics studies |
| title_fullStr | Fabrication and optimization calix[8]arene-PbS nanoadsorbents for the adsorption of methylene blue: isotherms, kinetics and thermodynamics studies |
| title_full_unstemmed | Fabrication and optimization calix[8]arene-PbS nanoadsorbents for the adsorption of methylene blue: isotherms, kinetics and thermodynamics studies |
| title_short | Fabrication and optimization calix[8]arene-PbS nanoadsorbents for the adsorption of methylene blue: isotherms, kinetics and thermodynamics studies |
| title_sort | fabrication and optimization calix[8]arene-pbs nanoadsorbents for the adsorption of methylene blue: isotherms, kinetics and thermodynamics studies |
| url | http://psasir.upm.edu.my/id/eprint/101450/ http://psasir.upm.edu.my/id/eprint/101450/ http://psasir.upm.edu.my/id/eprint/101450/ |