Original scientific paper
https://doi.org/10.15255/KUI.2022.001
Adsorption of Rhodamine 6G Dye onto Al-MCM-41 and MCM-41 Mesoporous Materials
Houda Douba
; Laboratory Physical Chemistry of Materials Interfaces Applied to the Environment, University of Saad Dahlab Blida1, 09 000 Blida, Algeria
Ourida Mohammedi
; Laboratory Physical Chemistry of Materials Interfaces Applied to the Environment, University of Saad Dahlab Blida1, 09 000 Blida, Algeria
Benamar Cheknane
; Laboratory Physical Chemistry of Materials Interfaces Applied to the Environment, University of Saad Dahlab Blida1, 09 000 Blida, Algeria
Abstract
The present study aimed to evaluate the potential of mesoporous silica MCM-41 and Al-MCM-41 (molar ratio Si/Al = 20) for the removal of Rhodamine 6G (Rh6G) from aqueous solution. The adsorbents were characterised by XRD, FTIR, SEM-EDX, BET, and UV-Raman. Obtained results related to XRD analysis indicated that the MCM-41 structure remained intact after the incorporation of Al species. Kinetic adsorption study showed that the higher removal (88.75 %, 26.62 mg g–1) of Rh6G dye was achieved by Al-MCM-41 at 60 min. FTIR analysis showed that hydrogen bonding played the dominant role in the Rh6G removal mechanism, while the pH results showed that electrostatic interaction was also a key factor. This study shows that the prepared mesoporous materials are inexpensive and efficient adsorbents for the removal of cationic dyes.
Keywords
adsorption; cationic dye; isotherms; mesoporous silica; Rhodamine 6G
Hrčak ID:
283616
URI
Publication date:
21.9.2022.
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