Song, Seung Hyun and Kim, Chang-Min and Khirul, Md Akhte and Ahmad, Ishaq and Jee, Hobin and Chuah, Chong Yang and Park, Jongkwan and Chae, Kyu-Jung and Yang, Euntae (2024) Silver nanoparticle-decorated reduced graphene oxide/ nanocrystalline titanium metal-organic frameworks composite membranes with enhanced nanofiltration performance and photocatalytic ability. Desalination and Water Treatment, 320. ISSN 1944-3994, DOI https://doi.org/10.1016/j.dwt.2024.100836.
Full text not available from this repository.Abstract
Nanofiltration (NF) has garnered significant attention for removing persistent dyes from industrial wastewater. However, limited membrane separation efficiency and performance deterioration due to membrane fouling are the primary challenges hindering the broader application of NF technology. Herein, we developed highperformance silver nanoparticle-coated reduced graphene oxide/nanocrystalline MIL125(Ti) composite NF membranes (nAg-rGO/n-MIL), which feature self-cleaning capabilities through photocatalytic activity. This was achieved by intercalating nanocrystalline MIL-125(Ti) (n-MIL) metal-organic frameworks between graphene oxide (GO) nanosheets, followed by reducing the GO nanosheets and decorating them with silver nanoparticles (nAg) via UV exposure. The nAg-rGO/n-MIL demonstrated high water permeability (21.7 LMH/bar) and achieved excellent removal efficiencies for targeting dyes with relatively small molecular weights ranging from 300 to 500 Da. Additionally, when operated in an NF system equipped with a UV side-emitting optical fiber, the nAg-rGO/n-MIL exhibited significantly reduced water flux decline and enhanced removal efficiencies, achieving up to 97.5 % for methylene blue. Moreover, the nAg-rGO/n-MIL demonstrated high durability under the tested operating conditions, indicating its potential for long-term use in industrial applications. The GO composite membrane, with nanosized MOF-intercalated nanochannels and photocatalytic activity via nAg decoration and GO reduction, offers a promising solution to performance limitations and fouling issues in current nanofiltration membranes.
| Item Type: | Article |
|---|---|
| Funders: | National Research Foundation of Korea, Korea Institute of Marine Science and Technology promotion, MSIT [Grant no. NRF-2020R1C1C1013172], NRF-2020R1C1C1013172 [Grant no. RS-2023-00219497], Ministry of Education [Grant no. 2021RIS-003], Ministry of Oceans and Fisheries [Grant no. 20210500] |
| Uncontrolled Keywords: | Fabrication method; Graphene-based composite membranes; Nano-crystalline metal organic framework; Pillared structure; Self-cleaning; UV side-emitting optic fiber |
| Subjects: | T Technology > TP Chemical technology |
| Divisions: | Faculty of Engineering > Department of Chemical Engineering |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 27 Oct 2025 02:54 |
| Last Modified: | 27 Oct 2025 02:54 |
| URI: | http://eprints.um.edu.my/id/eprint/46427 |
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