Crystallographic characterization of Ag‐doping in nanocrystallite hydroxyapatite and evaluation of photocatalytic activity of organic pollutants
Abstract Pure and different percentages (0.25, 0.5, 1.0, and 2.5%) of silver (Ag) doped hydroxyapatites (Hap) were synthesized employing the wet chemical precipitation method. The samples were characterized with the aid of X‐ray diffraction (phase analysis, crystallographic characterization, and cry...
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| Format: | Article |
| Language: | English |
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Wiley
2025-01-01
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| Series: | International Journal of Ceramic Engineering & Science |
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| Online Access: | https://doi.org/10.1002/ces2.10250 |
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| author | Md. Sahadat Hossain Shifa Sarkar Samina Ahmed |
| author_facet | Md. Sahadat Hossain Shifa Sarkar Samina Ahmed |
| author_sort | Md. Sahadat Hossain |
| collection | DOAJ |
| description | Abstract Pure and different percentages (0.25, 0.5, 1.0, and 2.5%) of silver (Ag) doped hydroxyapatites (Hap) were synthesized employing the wet chemical precipitation method. The samples were characterized with the aid of X‐ray diffraction (phase analysis, crystallographic characterization, and crystal size calculation using Scherrer equation and different models), scanning electron microscopy, and optical bandgap energy. The Hap containing 0.25% Ag showed better photocatalytic activity in various dye concentrations, catalyst doses, and pH. At a very low catalyst dose (0.375 g/L) and 20 ppm pollutant concentration, reaction rate, and rate constant were evaluated for the Congo Red dye, ciprofloxacin, amoxicillin, and levofloxacin. The maximum rate constant (0.0028 min−1) and reaction rate (9.657 × 10−8 mole L−1·min−1) were found for Congo Red dye and ciprofloxacin, respectively, using 0.25_Ag‐Hap (0.25% Ag‐doped Hap). The energies of the valance band (3.14 eV) and conduction band (−0.36 eV) were lower in the case of 0.25_Ag‐Hap than the other samples. Simplified reaction mechanisms were proposed for the photocatalytic degradation of Congo Red dye, ciprofloxacin, amoxicillin, and levofloxacin. |
| format | Article |
| id | doaj-art-dc4c364b112848329f16f4bb06aee587 |
| institution | Kabale University |
| issn | 2578-3270 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Ceramic Engineering & Science |
| spelling | doaj-art-dc4c364b112848329f16f4bb06aee5872025-01-21T08:44:30ZengWileyInternational Journal of Ceramic Engineering & Science2578-32702025-01-0171n/an/a10.1002/ces2.10250Crystallographic characterization of Ag‐doping in nanocrystallite hydroxyapatite and evaluation of photocatalytic activity of organic pollutantsMd. Sahadat Hossain0Shifa Sarkar1Samina Ahmed2Institute of Glass and Ceramic Research and Testing Bangladesh Council of Scientific and Industrial Research (BCSIR) Dhaka BangladeshInstitute of Glass and Ceramic Research and Testing Bangladesh Council of Scientific and Industrial Research (BCSIR) Dhaka BangladeshInstitute of Glass and Ceramic Research and Testing Bangladesh Council of Scientific and Industrial Research (BCSIR) Dhaka BangladeshAbstract Pure and different percentages (0.25, 0.5, 1.0, and 2.5%) of silver (Ag) doped hydroxyapatites (Hap) were synthesized employing the wet chemical precipitation method. The samples were characterized with the aid of X‐ray diffraction (phase analysis, crystallographic characterization, and crystal size calculation using Scherrer equation and different models), scanning electron microscopy, and optical bandgap energy. The Hap containing 0.25% Ag showed better photocatalytic activity in various dye concentrations, catalyst doses, and pH. At a very low catalyst dose (0.375 g/L) and 20 ppm pollutant concentration, reaction rate, and rate constant were evaluated for the Congo Red dye, ciprofloxacin, amoxicillin, and levofloxacin. The maximum rate constant (0.0028 min−1) and reaction rate (9.657 × 10−8 mole L−1·min−1) were found for Congo Red dye and ciprofloxacin, respectively, using 0.25_Ag‐Hap (0.25% Ag‐doped Hap). The energies of the valance band (3.14 eV) and conduction band (−0.36 eV) were lower in the case of 0.25_Ag‐Hap than the other samples. Simplified reaction mechanisms were proposed for the photocatalytic degradation of Congo Red dye, ciprofloxacin, amoxicillin, and levofloxacin.https://doi.org/10.1002/ces2.10250antibioticsphotocatalysisreaction mechanismtextile dyeXRD |
| spellingShingle | Md. Sahadat Hossain Shifa Sarkar Samina Ahmed Crystallographic characterization of Ag‐doping in nanocrystallite hydroxyapatite and evaluation of photocatalytic activity of organic pollutants International Journal of Ceramic Engineering & Science antibiotics photocatalysis reaction mechanism textile dye XRD |
| title | Crystallographic characterization of Ag‐doping in nanocrystallite hydroxyapatite and evaluation of photocatalytic activity of organic pollutants |
| title_full | Crystallographic characterization of Ag‐doping in nanocrystallite hydroxyapatite and evaluation of photocatalytic activity of organic pollutants |
| title_fullStr | Crystallographic characterization of Ag‐doping in nanocrystallite hydroxyapatite and evaluation of photocatalytic activity of organic pollutants |
| title_full_unstemmed | Crystallographic characterization of Ag‐doping in nanocrystallite hydroxyapatite and evaluation of photocatalytic activity of organic pollutants |
| title_short | Crystallographic characterization of Ag‐doping in nanocrystallite hydroxyapatite and evaluation of photocatalytic activity of organic pollutants |
| title_sort | crystallographic characterization of ag doping in nanocrystallite hydroxyapatite and evaluation of photocatalytic activity of organic pollutants |
| topic | antibiotics photocatalysis reaction mechanism textile dye XRD |
| url | https://doi.org/10.1002/ces2.10250 |
| work_keys_str_mv | AT mdsahadathossain crystallographiccharacterizationofagdopinginnanocrystallitehydroxyapatiteandevaluationofphotocatalyticactivityoforganicpollutants AT shifasarkar crystallographiccharacterizationofagdopinginnanocrystallitehydroxyapatiteandevaluationofphotocatalyticactivityoforganicpollutants AT saminaahmed crystallographiccharacterizationofagdopinginnanocrystallitehydroxyapatiteandevaluationofphotocatalyticactivityoforganicpollutants |