Guo, Liang and Wen, Yuming and Li, Feng and Tang, Chuchu and Yang, Yang and Wang, Shunhui and Wang, Zhen and He, Shun an (2024) A novel approach for oil/water separation: Integrating nano-ZnO with graphene oxide membranes via dopamine and KH550. Surfaces and Interfaces, 51. p. 104727. ISSN 2468-0230, DOI https://doi.org/10.1016/j.surfin.2024.104727.
Full text not available from this repository.Abstract
Graphene oxide-based membranes, known for unique permeability and selectivity in oil/water separation, face limitations due to low flux and weak anti-fouling performance. To overcome these challenges, a series of GO@ZnO membranes were synthesized in a one-pot process, doping different amounts of nano-ZnO into GO with the aid of polydopamine (PDA) and 3-triethoxysilylpropylamine (KH550). This study found that evenly distributed nano-ZnO within the GO layers acted as hydrophilic intercalators, creating continuous rough nanochannels and increased interlayer spacing for effective water transport. The membrane M-5 demonstrated a significant increase in water permeability, reaching 5718 +/- 151 L m- 2 h-1 bar- 1 , nearly 20 times higher than the control group (M-0) without ZnO doping. Anti-fouling tests, using four different oil/water emulsions, showed that M-5 consistently achieved oil rejection rates above 99.7 %. Furthermore, M-5 exhibited a flux recovery rate (FRR) of 95.5 %, surpassing M-0 by 34.6 %. Regeneration experiments confirmed that M-5 maintained an impressive oil rejection rate of 99.2 % after 30 recycling cycles. These results indicate that nano-ZnO enhances surface roughness and hydration layers, significantly improving water permeability without compromising rejection rate and anti-fouling performance. The study presents a straightforward approach to creating continuous nanochannels and hydrophilic layers in two-dimensional laminar GO membranes, highlighting the potential of GO@ZnO membranes in oil-water treatment applications.
| Item Type: | Article |
|---|---|
| Funders: | State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation (Southwest Petroleum University) (PLN2020-20), Foundation of Guangdong Provincial Key Laboratory of Marine Biotechnology and Scientific Research (GPKLMB202102), Starting Project of Southwest Petroleum University (2019QHZ004) |
| Uncontrolled Keywords: | Oil/water separation; Nano-ZnO; Intercalation; Graphene oxide nanosheets; PDA and KH550 |
| Subjects: | T Technology > TP Chemical technology |
| Divisions: | Faculty of Creative Arts (formerly known as the Cultural Centre) |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 25 Mar 2025 06:20 |
| Last Modified: | 25 Mar 2025 06:20 |
| URI: | http://eprints.um.edu.my/id/eprint/46815 |
Actions (login required)
 |
View Item |
