Tailoring MOF-303 with CaCl2 and Graphite: A Promising Material for Atmospheric Water Capture

  • Anindita Syafira Ariesta Analytical Chemistry Research Group, Institut Teknologi Bandung, Jl. Ganesa 10 Bandung, 40132, Indonesia
  • Muhammad Ali Zulfikar Inorganic and Physical Chemistry Research Group, Institut Teknologi Bandung, Jl. Ganesa 10 Bandung, 40132, Indonesia
  • Aep Patah Inorganic and Physical Chemistry Research Group, Institut Teknologi Bandung, Jl. Ganesa 10 Bandung, 40132, Indonesia
DOI: https://doi.org/10.30598/ijcr.2026.14-ani
Keywords: Atmospheric Water Harvesting (AWH), Metal-Organic Frameworks (MOFs), MOF-303, Calcium Chloride (CaCl₂), Graphite

Abstract

Atmospheric water harvesting (AWH) is a promising approach to address water scarcity in arid and low-humidity regions. In this study, MOF-303 was synthesized hydrothermally and modified with CaCl₂ and graphite by wet impregnation. Among samples containing 20–40 wt% CaCl₂, MC30-G2 (30 wt% CaCl₂, 2 wt% graphite) showed the best performance, with an adsorption capacity of 402.53 mg g⁻¹ and an adsorption percentage of 40.25%, nearly 94.8% higher than MC30-G0 (206.60 mg g⁻¹). FTIR, PXRD, SEM-EDS, BET, and AAS confirmed successful incorporation of the modifiers while preserving the MOF-303 framework. The composite had a surface area of 823.58 m² g⁻¹. Cycling tests showed adsorption capacity decreased from 495.911 mg g⁻¹ to 361.371 mg g⁻¹ after five cycles, while desorption efficiency remained above 87.99%. These results indicate that MOF-303/CaCl₂/graphite is a promising adsorbent for atmospheric water capture.

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Published
2026-05-30
How to Cite
(1)
Ariesta, A. S.; Zulfikar, M. A.; Patah, A. Tailoring MOF-303 With CaCl2 and Graphite: A Promising Material for Atmospheric Water Capture. Indo. J. Chem. Res. 2026, 14, 88-95.
Issue
Vol 14 No 1 (2026): Edition for May 2026
Section
Research articles

Copyright (c) 2026 Anindita Syafira Ariesta, Muhammad Ali Zulfikar, Aep Patah

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