Well-crystallized MIL-68(Al) prepared in isopropanol as an efficient adsorbent of furfural for wastewater abatement
MIL-68(Al)s with different crystallinities, morphologies, and porous structures were prepared in isopropanol (IPA) and N, N’-dimethylformamide (DMF). MIL-68(Al)-IPA synthesized in IPA exhibited higher crystallinity and specific surface area than MIL-68(Al)-DMF prepared in DMF. MIL-68(Al)-IPA display...
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-07-01
|
| Series: | Next Materials |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2949822825004046 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Summary: | MIL-68(Al)s with different crystallinities, morphologies, and porous structures were prepared in isopropanol (IPA) and N, N’-dimethylformamide (DMF). MIL-68(Al)-IPA synthesized in IPA exhibited higher crystallinity and specific surface area than MIL-68(Al)-DMF prepared in DMF. MIL-68(Al)-IPA displayed a uniform hexagonal rod-shaped structure, whereas MIL-68 (Al)-DMF formed an irregular rod-like structure. The XRD patterns indicated a less crystallized structure in MIL-68(Al)-DMF due to the Al-OH defect sites. The furfural (FUR) adsorption capacities of the two materials depended on their specific surface areas, defect sites, and furfural concentrations. MIL-68(Al)-DMF displayed faster adsorption and a higher furfural adsorption capacity than MIL-68(Al)-IPA at furfural concentration below 6.8 g L−1, which could be explained by the presence of Al-OH sites that may enhance the interaction between the structure of MIL-68(Al)-DMF and furfural molecules. For aqueous solutions with high furfural concentrations, the furfural adsorption capacity of MIL-68(Al)-IPA surpassed that of MIL-68(Al)-DMF and gave a furfural adsorption capacity of 644.4 mg g−1 at a furfural concentration of 20.2 g L−1. The higher adsorption capacity of MIL-68 (Al)-IPA for furfural at higher furfural concentrations can be attributed to the higher specific surface area of MIL-68(Al)-IPA. MIL-68(Al)-IPA shows promising applications in wastewater abatement attributed to its low cost and environmental friendliness. |
|---|---|
| ISSN: | 2949-8228 |