Facile exfoliation of natural talc into separated mesoporous magnesium silicate nano-sheets for effective sequestration of phosphate and nitrate ions: characterization and advanced modeling
Magnesium silicate nano-sheets were synthesized from natural talc by facile exfoliation and delamination methods as exfoliated product (EXTC) of 29.5 nm average pore diamter, enhanced surface area (103 m2/g), and adsorption perforamnces. The sucessful development of EXTC particles was followed based...
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Frontiers Media S.A.
2025-04-01
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| Series: | Frontiers in Chemistry |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fchem.2025.1571723/full |
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| author | Walaa Gaber Nabila Shehata Nabila Shehata Ahmed M. El-Sherbeeny Wail Al Zoubi Ahmed Mehaney Mostafa R. Abukhadra Mostafa R. Abukhadra |
| author_facet | Walaa Gaber Nabila Shehata Nabila Shehata Ahmed M. El-Sherbeeny Wail Al Zoubi Ahmed Mehaney Mostafa R. Abukhadra Mostafa R. Abukhadra |
| author_sort | Walaa Gaber |
| collection | DOAJ |
| description | Magnesium silicate nano-sheets were synthesized from natural talc by facile exfoliation and delamination methods as exfoliated product (EXTC) of 29.5 nm average pore diamter, enhanced surface area (103 m2/g), and adsorption perforamnces. The sucessful development of EXTC particles was followed based on different techniques and applied in effective sequestration of PO43- and NO3− ions from water. The EXTC product as adsorbent demonstrates remarkable effectiveness for both PO43- (257.9 mg/g) and NO3− (164.2 mg/g) as compared to several studied structures. Depending on the steric analysis of Monolayer equilibrium model, the interface of EXTC highly saturated with interactive receptors for the both ions but with higher abundant for PO43- (151.5 mg/g) as compared to NO3− (61.5 mg/g). This resulted in higher aggregation effect during the uptake of NO3− (4 ions per site) than PO43- (3 ions per site) which also donate the vertical orientation of these adsorbed ions and operation of multi-ionic sequestration mechanisms. The structure is highly recyclable and of significant safety and cane be applied in its spent or exhausted state as fertilizer. The energetic evaluation considering the Gaussian energy (<8.5 kJ/mol) as well as the sequestration energy (<4 kJ/mol), suggested the predominant impact of physical mechanisms (hydrogen bonds and electrostatic attraction), in addition to the impact of the weak chemical complexation. Furthermore, the thermodynamic functions declare the retention of these ions into the framework of EXTC by exothermic and spontaneous reactions. |
| format | Article |
| id | doaj-art-ffd828f2f4fe455fa1aae3577d6a8fc0 |
| institution | DOAJ |
| issn | 2296-2646 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | Frontiers Media S.A. |
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| series | Frontiers in Chemistry |
| spelling | doaj-art-ffd828f2f4fe455fa1aae3577d6a8fc02025-08-20T03:08:32ZengFrontiers Media S.A.Frontiers in Chemistry2296-26462025-04-011310.3389/fchem.2025.15717231571723Facile exfoliation of natural talc into separated mesoporous magnesium silicate nano-sheets for effective sequestration of phosphate and nitrate ions: characterization and advanced modelingWalaa Gaber0Nabila Shehata1Nabila Shehata2Ahmed M. El-Sherbeeny3Wail Al Zoubi4Ahmed Mehaney5Mostafa R. Abukhadra6Mostafa R. Abukhadra7Environmental Science and Industrial Development Department, Faculty of Postgraduate Studies for Advanced Sciences, Beni-Suef University, Beni-Suef, EgyptEnvironmental Science and Industrial Development Department, Faculty of Postgraduate Studies for Advanced Sciences, Beni-Suef University, Beni-Suef, EgyptRenewable Energy Science and Engineering Department, Faculty of Postgraduate Studies for Advanced Sciences, Beni-Suef University, Beni-Suef, EgyptIndustrial Engineering Department, College of Engineering, King Saud University, Riyadh, Saudi ArabiaMaterials Electrochemistry Laboratory, School of Materials Science and Engineering, Yeungnam University, Gyeongsan, Republic of KoreaPhysics Department, Faculty of Science, Beni-Suef University, Beni-Suef, EgyptApplied Science Research Center, Applied Science Private University, Amman, JordanMaterials Technologies and their applications Lab, Faculty of Science, Beni-Suef University, Beni Suef, EgyptMagnesium silicate nano-sheets were synthesized from natural talc by facile exfoliation and delamination methods as exfoliated product (EXTC) of 29.5 nm average pore diamter, enhanced surface area (103 m2/g), and adsorption perforamnces. The sucessful development of EXTC particles was followed based on different techniques and applied in effective sequestration of PO43- and NO3− ions from water. The EXTC product as adsorbent demonstrates remarkable effectiveness for both PO43- (257.9 mg/g) and NO3− (164.2 mg/g) as compared to several studied structures. Depending on the steric analysis of Monolayer equilibrium model, the interface of EXTC highly saturated with interactive receptors for the both ions but with higher abundant for PO43- (151.5 mg/g) as compared to NO3− (61.5 mg/g). This resulted in higher aggregation effect during the uptake of NO3− (4 ions per site) than PO43- (3 ions per site) which also donate the vertical orientation of these adsorbed ions and operation of multi-ionic sequestration mechanisms. The structure is highly recyclable and of significant safety and cane be applied in its spent or exhausted state as fertilizer. The energetic evaluation considering the Gaussian energy (<8.5 kJ/mol) as well as the sequestration energy (<4 kJ/mol), suggested the predominant impact of physical mechanisms (hydrogen bonds and electrostatic attraction), in addition to the impact of the weak chemical complexation. Furthermore, the thermodynamic functions declare the retention of these ions into the framework of EXTC by exothermic and spontaneous reactions.https://www.frontiersin.org/articles/10.3389/fchem.2025.1571723/fulltalcexfoliationsilicate nano-sheetsadsorptionenergeticsteric |
| spellingShingle | Walaa Gaber Nabila Shehata Nabila Shehata Ahmed M. El-Sherbeeny Wail Al Zoubi Ahmed Mehaney Mostafa R. Abukhadra Mostafa R. Abukhadra Facile exfoliation of natural talc into separated mesoporous magnesium silicate nano-sheets for effective sequestration of phosphate and nitrate ions: characterization and advanced modeling Frontiers in Chemistry talc exfoliation silicate nano-sheets adsorption energetic steric |
| title | Facile exfoliation of natural talc into separated mesoporous magnesium silicate nano-sheets for effective sequestration of phosphate and nitrate ions: characterization and advanced modeling |
| title_full | Facile exfoliation of natural talc into separated mesoporous magnesium silicate nano-sheets for effective sequestration of phosphate and nitrate ions: characterization and advanced modeling |
| title_fullStr | Facile exfoliation of natural talc into separated mesoporous magnesium silicate nano-sheets for effective sequestration of phosphate and nitrate ions: characterization and advanced modeling |
| title_full_unstemmed | Facile exfoliation of natural talc into separated mesoporous magnesium silicate nano-sheets for effective sequestration of phosphate and nitrate ions: characterization and advanced modeling |
| title_short | Facile exfoliation of natural talc into separated mesoporous magnesium silicate nano-sheets for effective sequestration of phosphate and nitrate ions: characterization and advanced modeling |
| title_sort | facile exfoliation of natural talc into separated mesoporous magnesium silicate nano sheets for effective sequestration of phosphate and nitrate ions characterization and advanced modeling |
| topic | talc exfoliation silicate nano-sheets adsorption energetic steric |
| url | https://www.frontiersin.org/articles/10.3389/fchem.2025.1571723/full |
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