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Polymer-Based Metal-Organic Framework Composite Beads: Optimization for Methyl Orange Adsorption

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Abstract:

Metal-Organic Frameworks (MOFs) have gained traction as an adsorbent due to their high surface area and porosity. MIL-101(Fe), a MOF that has been used for removing dyes in water by adsorption, faces the problem of being inseparable from water after use. To get around this difficulty, MIL-101(Fe) was incorporated into composite beads consisting of polymers Chitosan (CS), and Polyvinyl Alcohol (PVA) crosslinked with Glutaraldehyde (GLA) to remove Methyl Orange (MO) from water. The resulting CS/MIL-101(Fe)/PVA beads were optimized based on the right combination of synthesis parameters that gave the highest percent MO removal. It was found that the maximum MO removal can be achieved by beads made of 1500 ppm MIL-101(Fe), 2.0 % PVA, crosslinked in 2.5% GLA. Using FTIR analysis and SEM imaging, the beads exhibited favorable properties for adsorption, as shown by their coarse and porous structure. The beads proved viable for adsorption, exhibiting a percent MO removal of 69.62% upon validation.

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Periodical:

Materials Science Forum (Volume 1112)

Pages:

83-90

DOI:

https://doi.org/10.4028/p-V5gKnx

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Online since:

February 2024

Authors:

Nathaniel Saporsantos, Edgar Clyde R. Lopez, Kobi Christian Go, Kynan Daro Taclobao, Hilda Luzelle Medrano, Jem Valerie D. Perez*

Keywords:

Adsorption, Chitosan, Metal-Organic Frameworks, Methyl Orange, MIL-101 (Fe), Polyvinyl Alcohol

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© 2024 Trans Tech Publications Ltd. All Rights Reserved

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* - Corresponding Author

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