Synergistic effects of combining ZIF-8 and graphene oxide inside cellulose acetate-based mixed matrix membranes on the removal of methylene blue

Sutrisna, Putu Doddy and Mustika, Pra Cipta Buana Wahyu and Wijaya, Candra and Putra, Verdianto Indra Wijaya Sutama and Denaswara, Putu Dhiyo Dharmayoga and Hadi, Ronaldo Pangestu and Widianto, Aloisiyus Yuli and Purwanto, Edy (2026) Synergistic effects of combining ZIF-8 and graphene oxide inside cellulose acetate-based mixed matrix membranes on the removal of methylene blue. Case Studies in Chemical and Environmental Engineering, 13. p. 101338. ISSN 2666-0164

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Abstract

Mixed matrix membranes (MMMs) combining zeolitic imidazolate framework-8 (ZIF-8) and graphene oxide (GO) within a cellulose acetate (CA) matrix were fabricated via phase inversion for methylene blue (MB) dye removal. ZIF-8 introduced rigid microporous domains that enhanced dye retention through adsorption and steric hin- drance, while GO improved membrane hydrophilicity and filler dispersion. SEM and XRD analyses confirmed uniform filler incorporation and partial structural ordering, whereas excessive GO loading reduced apparent crystallinity. ZIF-8 incorporation increased membrane hydrophobicity and reduced permeability; however, the addition of GO partially mitigated this effect, leading to improved flux relative to ZIF-8-only membranes while maintaining high rejection. The optimized CA/ZIF-8 + GO membrane achieved 99.7% MB removal, demon- strating a synergistic balance between permeability and selectivity. These findings highlight the potential of hybrid-filler CA-based MMMs as sustainable adsorptive ultrafiltration membranes for dye wastewater treatment, supporting SDG 6 and SDG 12.

Item Type:	Article
Uncontrolled Keywords:	Mixed matrix membranes Cellulose acetate ZIF-8 Graphene oxide Methylene blue
Subjects:	T Technology > TP Chemical technology
Divisions:	Faculty of Engineering > Department of Chemical Engineering
Depositing User:	BAMBANG SEPTIAWAN
Date Deposited:	09 Feb 2026 04:16
Last Modified:	09 Feb 2026 04:16
URI:	http://repository.ubaya.ac.id/id/eprint/50254

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