1
|
Yang Y, Guo Y, Qiu Z, Gong W, Wang Y, Xie Y, Xiao Z. In situ growth of Zr-based metal-organic frameworks on cellulose sponges for Hg 2+ and methylene blue removal. Carbohydr Polym 2024; 328:121750. [PMID: 38220333 DOI: 10.1016/j.carbpol.2023.121750] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Revised: 12/22/2023] [Accepted: 12/27/2023] [Indexed: 01/16/2024]
Abstract
Metal-organic frameworks (MOFs) are characterised by high porosity levels and controllable structures, making them ideal adsorbents for wastewater. However, obtaining substrate materials with mechanical stability, excellent pore accessibility, and good processability for compositing MOF crystal powders to adsorb multiple pollutants in complex aqueous environments is challenging. In this study, porous MOFs@ modified cellulose sponge (MCS) composites were fabricated using MCS as a scaffold to provide anchoring sites for the coordination of Zr4+ ions and further in situ synthesis of MOFs, namely UiO-66@MCS and UiO-66-NH2@MCS, which effectively removed heavy metal ions and organic dyes. MOFs@MCS composites exhibit excellent water and dimensional stability, maintaining the pore structure by ambient drying during reuse. Compared with UiO-66@MCS composite, UiO-66-NH2@MCS composite exhibited a higher adsorption capacity of 224.5 mg·g-1 for Hg2+ and 400.9 mg·g-1 for methylene blue (MB). The adsorption of Hg2+ onto the MOFs@MCS composites followed the Langmuir and pseudo-second-order models, whereas the Freundlich and pseudo-second-order models were more suitable for MB adsorption. Moreover, the MOFs@MCS composites exhibited excellent reusability and were selective for the removal of Hg2+. Overall, this approach effectively combines Zr-based MOFs with mechanically and dimensionally stable porous cellulose sponges, rendering the approach suitable for purifying complex wastewater.
Collapse
Affiliation(s)
- Yanxiao Yang
- Key Laboratory of Bio-based Material Science and Technology, Ministry of Education, College of Material Science and Engineering, Northeast Forestry University, Hexing 26 Road, Harbin 150040, PR China
| | - Yunfeng Guo
- Key Laboratory of Bio-based Material Science and Technology, Ministry of Education, College of Material Science and Engineering, Northeast Forestry University, Hexing 26 Road, Harbin 150040, PR China
| | - Zhe Qiu
- Key Laboratory of Bio-based Material Science and Technology, Ministry of Education, College of Material Science and Engineering, Northeast Forestry University, Hexing 26 Road, Harbin 150040, PR China
| | - Weihua Gong
- Key Laboratory of Bio-based Material Science and Technology, Ministry of Education, College of Material Science and Engineering, Northeast Forestry University, Hexing 26 Road, Harbin 150040, PR China
| | - Yonggui Wang
- Key Laboratory of Bio-based Material Science and Technology, Ministry of Education, College of Material Science and Engineering, Northeast Forestry University, Hexing 26 Road, Harbin 150040, PR China.
| | - Yanjun Xie
- Key Laboratory of Bio-based Material Science and Technology, Ministry of Education, College of Material Science and Engineering, Northeast Forestry University, Hexing 26 Road, Harbin 150040, PR China
| | - Zefang Xiao
- Key Laboratory of Bio-based Material Science and Technology, Ministry of Education, College of Material Science and Engineering, Northeast Forestry University, Hexing 26 Road, Harbin 150040, PR China
| |
Collapse
|
2
|
Yu Z, Xu C, Yuan K, Gan X, Feng C, Wang X, Zhu L, Zhang G, Xu D. Characterization and adsorption mechanism of ZrO 2 mesoporous fibers for health-hazardous fluoride removal. J Hazard Mater 2018; 346:82-92. [PMID: 29247957 DOI: 10.1016/j.jhazmat.2017.12.024] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2017] [Revised: 11/10/2017] [Accepted: 12/08/2017] [Indexed: 06/07/2023]
Abstract
One-dimension ZrO2 mesoporous fibers were successfully synthesized by utilizing the electrospinning device combining with the soft-template method. The morphology and composite of the fibers were characterized by XRD, SEM, TEM, FT-IR, TGA/DSC and XPS, and the pore structure and surface area were calculated according the BET measured results. The fluoride adsorption performance of the fibers was investigated and the adsorption capacity was upto 297.70 mg g-1. Moreover, the equilibrium concentration could be reached to 1.41 mg L-1 with the initial of 30 mg L-1, and the removal rate could be reached to 95.3%. The adsorption data were well fitted with the Freundlich isotherm model and pseudo-second-order kinetic model. The fibers had a good reusability and long-term utilization for fluoride adsorption. All the results suggested that the as-prepared ZrO2 mesoporous fibers with high surface area could be an excellent adsorbent for the wastewater defluoridation treatment.
Collapse
Affiliation(s)
- Zhichao Yu
- State Key Laboratory of Crystal Materials and Institute of Crystal Materials, Shandong University, Jinan 250100, PR China
| | - Chonghe Xu
- State Key Laboratory of Crystal Materials and Institute of Crystal Materials, Shandong University, Jinan 250100, PR China
| | - Kangkang Yuan
- State Key Laboratory of Crystal Materials and Institute of Crystal Materials, Shandong University, Jinan 250100, PR China
| | - Xinzhu Gan
- State Key Laboratory of Crystal Materials and Institute of Crystal Materials, Shandong University, Jinan 250100, PR China
| | - Cong Feng
- State Key Laboratory of Crystal Materials and Institute of Crystal Materials, Shandong University, Jinan 250100, PR China
| | - Xinqiang Wang
- State Key Laboratory of Crystal Materials and Institute of Crystal Materials, Shandong University, Jinan 250100, PR China.
| | - Luyi Zhu
- State Key Laboratory of Crystal Materials and Institute of Crystal Materials, Shandong University, Jinan 250100, PR China
| | - Guanghui Zhang
- State Key Laboratory of Crystal Materials and Institute of Crystal Materials, Shandong University, Jinan 250100, PR China
| | - Dong Xu
- State Key Laboratory of Crystal Materials and Institute of Crystal Materials, Shandong University, Jinan 250100, PR China
| |
Collapse
|