Article
Chemistry, Physical
Zhiwei Zhao, Renchan Lei, Yizhe Zhang, Tingting Cai, Bing Han
Summary: The development of a highly effective adsorbent with both high capacity and selectivity is crucial for the extraction of uranium from seawater. This study focuses on the use of defective Zr-based metal-organic frameworks (MOFs) as potential candidates for uranium sequestration. By manipulating the concentration of the carboxylic acid modulator, MOF808 samples with adjustable missing linker defects were successfully prepared. The results showed that the MOF-808 with the highest defect density exhibited excellent selectivity towards uranium compared to other competitive ions in seawater. Moreover, this MOF-808 sample also demonstrated remarkable uranium extraction performance in real seawater. The study highlights the advantages of defect engineering in MOF-based materials for highly selective uranium extraction from seawater.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Engineering, Environmental
Nicholaus Prasetya, Kang Li
Summary: Research has shown that MOF-808 is a superior adsorbent for diclofenac removal, with high adsorption capacity and fast kinetics. By depositing MOF-808 on yttria-stabilised zirconia hollow fiber support, the efficiency and stability of the adsorption system is significantly enhanced, making it a promising candidate for commercial use in diclofenac removal from water.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Multidisciplinary
Rifan Hardian, Stefano Dissegna, Aladin Ullrich, Philip L. Llewellyn, Marie-Vanessa Coulet, Roland A. Fischer
Summary: Defect engineering and metal encapsulation are valuable approaches to fine-tune the reactivity of metal-organic frameworks. This study quantified the reactivity of pristine, defective, and Pt encapsulated MOF-808, revealing competitive effects between crystal morphology and missing linker defects, which can impact the stability of the MOF. Despite leading to a loss in porosity, defects are beneficial for the stability of MOF-808 towards water and can be used to tune adsorption properties.
CHEMISTRY-A EUROPEAN JOURNAL
(2021)
Article
Engineering, Chemical
Mingming Wu, Yanwei Sun, Taotao Ji, Kunpeng Yu, Liangliang Liu, Yongfu He, Jiahui Yan, Shengyan Meng, Wenjing Hu, Xiao Fan, Dongying Du, Yi Liu
Summary: This study demonstrates the fabrication of a Zirconium-based metal-organic framework (Zr-MOF) membrane, MOF-808, with tunable pore aperture, rich functionality, and excellent stability on porous α-Al2O3 tube. The MOF-808 membrane exhibited high rejection rates for various dye molecules and low rejection rates for simple salt, making it suitable for efficient removal of dyes from salt-containing wastewater. The membrane also showed outstanding chemical stability and achieved high salt/dye separation factor and water permeance.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Engineering, Chemical
Yuqin Lu, Shuhao Lin, Hongyan Cao, Yongsheng Xia, Yu Xia, Li Xin, Kai Qu, Dezhu Zhang, Ying Yu, Kang Huang, Wenheng Jing, Zhi Xu
Summary: Researchers prepared a hybrid membrane by doping polydopamine modified MOF-808 into the sulfonated poly (ether ether ketone) matrix, which exhibited high ion selectivity and proton conductivity, greatly enhancing energy efficiency in vanadium flow battery.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Engineering, Environmental
Sha Su, Ru Zhang, Jiantao Rao, Junhui Yu, Xue Jiang, Shixiong Wang, Xiangjun Yang
Summary: A lanthanum-modified metal-organic framework (La-MOF-808) was developed for the removal of phosphate or arsenic(V) from water. The adsorbent exhibited excellent adsorption performance with high uptake capacities for both phosphate and arsenic(V). It could be regenerated and used in multiple cycles.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Engineering, Environmental
Yaxin Shang, Qing Xu, Zhixiao Gao, Beibei Li, Jingsu Yang, Yifei Wang, Yongzhen Peng
Summary: The ZIF8@rGO heterostructures prepared through dimensional engineering exhibit excellent phosphate removal efficiency, with significantly higher maximum adsorption capacity and partition coefficient values compared to existing adsorbents, mainly attributed to the two-dimensional graphene support providing a more effective anchoring surface for ZIF8.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Environmental
Chenghan Ji, Yi Ren, Hang Yu, Ming Hua, Lu Lv, Weiming Zhang
Summary: MOF-808-SH is an effective metal-organic framework adsorbent with high Hg(II) adsorption capacity and ultrafast adsorption kinetics, showing high selectivity and excellent recyclability in batch experiments. This study indicates the potential of MOF-808-SH to remove Hg(II) from wastewater.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Applied
Yuming Xie, Guolin Huang, Jiangang Li, Qin Zhang, Lijiao Fan, Wenbin Liu
Summary: A novel uranium adsorption material, the Ni/Co-LDH@ZIF-67/8-MOF (LDH/MOF) composite, was successfully fabricated and characterized. The composite exhibited exceptional uranium adsorption capacity, rapid equilibrium achieved by ultrasonic mixing, and insights into the adsorption mechanisms provided by thermodynamic analysis and XPS investigations. These findings offer new possibilities for the development of efficient uranium separation methods.
APPLIED ORGANOMETALLIC CHEMISTRY
(2023)
Article
Engineering, Chemical
Yujiang Meng, Yudan Wang, Lijia Liu, Fuqiu Ma, Chunhong Zhang, Hongxing Dong
Summary: A highly effective uranium adsorbent with high specific surface area and efficient adsorption performance was prepared, showing high selectivity and recylability in simulated seawater. The study on influencing factors and adsorption kinetics provided insights for its potential application in uranium extraction.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Chemistry, Physical
Erlend Aunan, Christopher W. Affolter, Unni Olsbye, Karl Petter Lillerud
Summary: Metal-organic frameworks (MOFs) are attractive materials for various fields due to their porous and crystalline nature, but their thermal stability is crucial for industrial applications. This article introduces a method to thermally stabilize MOF-808 by incorporating benzoate moieties through post-synthetic functionalization, and discusses how this affects the physicochemical properties of the MOFs. The materials described provide new options for the design of stable catalysts and adsorbents for future technologies.
CHEMISTRY OF MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Mojdeh Nakhaei, Kamran Akhbari, Alireza Davoodi
Summary: The study focuses on synthesizing a biocide by encapsulating iodine in the metal-organic framework MOF-808, resulting in a highly stable material that effectively inhibits bacterial growth.
Article
Nanoscience & Nanotechnology
Chenghan Ji, Hang Yu, Junhe Lu, Yi Ren, Lu Lv, Weiming Zhang
Summary: A thermo-regenerable salt absorbent MOF-808-EDTA with high desalination capacity for fast adsorption of NaCl and easy regeneration in 80 degrees C water was synthesized in this study. Mechanism of temperature-regulated proton transfer between amino and carboxyl groups was revealed, as well as the zwitterionic state of EDTA on MOF-808-EDTA in water at room temperature. Temperature-dependent adsorption-regeneration process was observed for various salts, indicating the potential of MOF-808-EDTA as a green adsorbent for sustainable water desalination.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Multidisciplinary
Zhenyu Zhou, Dexuan Li, Weiming Huang, Rongyue Wang, Jiapeng Zhong, Yangyang Zhang, Jiazhou Meng, Chuanhao Li
Summary: In this study, a cerium/terephthalic-acid metal-organic-frameworks (Ce-MOF) adsorbent material was developed to remove excessive phosphate from different water systems. The optimal Ce-MOF exhibited a significantly higher phosphate adsorption capacity than the commercial phosphate adsorbent. Experimental and computational analysis revealed that pH played a dominant role in the adsorption process. Moreover, the Ce-MOF showed excellent performance in real water samples with various interfering ions and organic matters, suggesting its potential for practical use in addressing water eutrophication.
CHEMISTRY-AN ASIAN JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Hyeok Joon Jun, Dong Kyu Yoo, Sung Hwa Jhung
Summary: In this study, a Zr-based metal-organic framework (MOF), MOF-808, was functionalized with ethyleneamines to selectively capture CO2 from offgas under low pressure. Among the tested ethyleneamines, tetraethylenepentamine (TEPA) showed the most effective modification. The functionalized TEPA MOF-808 exhibited remarkable performance in CO2 capture due to the loaded primary and secondary amino groups.
JOURNAL OF CO2 UTILIZATION
(2022)
Article
Biochemistry & Molecular Biology
Rui Guo, Jun Zhang, Taona Nashel Mufanebadza, Xinxia Tian, Lixin Xie, Song Zhao
Summary: This work focuses on using MIL-101(Fe) for silicic acid adsorption to alleviate silica scaling in reverse osmosis (RO) membranes. The results demonstrate that MIL-101(Fe) has excellent adsorption capacity for silicic acid, with a maximum adsorption capacity of 220.1 mgSiO(2)center dot g(-1). The adsorption is consistent with the pseudo-second-order equation and Freundlich equation. Additionally, a simulated anti-scaling experiment shows that MIL-101(Fe) has great potential for mitigating silica scale in RO systems.
Article
Engineering, Environmental
Wen Zhang, Jian Zhang, Xiuting Dong, Menglin Li, Qing He, Song Zhao, Lixin Xie
Summary: The introduction of fluorinated groups into MOFs improves the iodine adsorption performance under high humidity conditions, enhancing both structural stability and adsorption selectivity.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Chemical
Li Xu, Huimin Wang, Luofu Min, Wei Xu, Wen Zhang
Summary: This study investigates the influence of polymer backbone structures of PAP AEMs on acid separation and finds that m-terphenyl-based AEM exhibits excellent comprehensive performance. It has a dialysis coefficient of 20.1 × 10-3 m h-1 and H+/Fe2+ selectivity of 196. Furthermore, the m-terphenyl-based AEM shows good acid stability and ionic conductivity.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Chemistry, Physical
Li Xu, Yuxuan Dong, Wei Xu, Wen Zhang
Summary: A one-step solution-immersion synthesis strategy was used to prepare a (Ni/Fe/Mo)OOH catalyst on a nickel foam substrate in just 5 minutes under ambient temperature and pressure. The unique cluster morphology of the catalyst effectively increased the number of active sites, and the presence of Mo, Ni, and Fe enhanced its activity in the oxygen evolution reaction (OER). The electrode exhibited low OER overpotentials in 1 mol/L NaOH solution and excellent performance in seawater splitting, indicating its potential for hydrogen generation through seawater electrolysis.
Article
Engineering, Chemical
Xu Zhu, Lixin Xie, Shichang Xu, Wen Zhang
Summary: Traditional flighted rotary drums cannot facilitate the axial motion of materials. A new horizontal rotary drum with inclined flights and beads was designed to overcome this issue. Simulation and discrete element method (DEM) were used to study the axial motion of fillers. Optimization of bead distribution in the active phase was done for better mass and heat transfer performance. The effects of rotational speed, joint angle, and inlet flow rate on various parameters were systematically investigated. Response surface methodology (RSM) was used to analyze the significant effects of parameter interaction. The study concluded that the drum with inclined flights had enhanced axial speed and the research findings will help in the design and optimization of similar drums.
Article
Biochemistry & Molecular Biology
Shichang Xu, Han Zhao, Lixin Xie, Keqiang Wang, Wen Zhang
Summary: In this study, refined sugar wastewater (RSW) was treated using electrodialysis (ED) coupled with an upflow anaerobic sludge blanket (UASB) and membrane bioreactor (MBR). The salt in RSW was first removed by ED, followed by degradation of remaining organic components using the combined UASB-MBR system. The results showed successful removal of salt and organic contaminants, meeting the discharge standard for the sugar industry. This coupled method provides a viable and effective approach for treating RSW and similar high salinity and organic content wastewaters.
Article
Biochemistry & Molecular Biology
Lixin Xie, Yaqian Liu, Shichang Xu, Wen Zhang
Summary: The polyamide brackish water reverse osmosis (BWRO) membrane was modified through the biomimetic co-deposition of catechol/tetraethylenepentamine (TEPA) and in situ growth of Ag nanoparticles. The modified membrane showed improved hydrophilic property, increased zeta potential, enhanced anti-adhesion and anti-bacterial activities.
Article
Nanoscience & Nanotechnology
Xinpeng Wang, Menglin Li, Jian Zhang, Xihong He, John C. Crittenden, Wen Zhang
Summary: This study utilized anionic metal-organic frameworks (MOFs) as stable supports for Ag catalysts. The results showed that Ag nanoparticles were formed through the exchange of NH2Me2+ with extrinsic Ag+ ions, with 20% of Ag+ being reduced into Ag-0 and the remaining 80% remaining as Ag+ ions. Loading Ag into MOFs helped to alleviate aggregation and spontaneous reduction. Additionally, Ag in MOFs reacted with iodine vapor to form AgI, and the adsorption performance of MOF beads was evaluated.
ACS APPLIED NANO MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Zhenyi Zhao, Nanxi Di, Zhiyuan Zha, Jixiao Wang, Zhi Wang, Song Zhao
Summary: This study developed a polyamine-based NF membrane with a positively charged surface and high ion selectivity for precise ion-ion separation. The membrane shows great potential in lithium-magnesium separation and heavy metal removal, and exhibits excellent stability under continuous filtration and high operational pressure.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Engineering, Chemical
Chuan Song, Luofu Min, Wen Zhang, Li Xu, Yuxin Wang
Summary: To improve the efficiency of alkaline water electrolysis for hydrogen production, new membranes with high ionic conductivity, gas-tightness, and structural robustness are needed. In this study, a benzimidazole-linked polymer (BILP) based composite membrane was prepared by forming a BILP-101 dense layer on top of a commercial porous polyethylene (PE) substrate membrane. The BILP-PE composite membrane showed low area resistance and H2 gas crossover rate, low swelling ratio, and high tensile strength, making it a promising candidate for advanced alkaline water electrolysis.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Xianjie Zeng, Li Xu, Tao Deng, Yuxin Wang, Wei Xu, Wen Zhang
Summary: Efficient separation of lithium (Li+) and magnesium (Mg2+) can be achieved by incorporating anionic metal-organic frameworks (MOFs) into anion-exchange membranes (AEMs). The resulting hybrid membranes exhibit improved Li+/Mg2+ selectivity and Li+ permeability. This study provides a new strategy for efficient cation separations using AEM-based MOF hybrid membranes.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Chemistry, Physical
Zhihao Jiang, Ying Wang, Menglong Sheng, Zhiyuan Zha, Jixiao Wang, Zhi Wang, Song Zhao
Summary: Membrane-based separation processes have gained significant attention in CO2/N-2 and CH4/N-2 separation due to their environmentally friendly, energy-efficient, and highly efficient characteristics. A highly permeable porous organic cage (POC) composite membrane was proposed and constructed by crosslinking the RCC3 porous organic cage with terephthaloyl chloride (TPC). The composite membrane exhibited excellent CO2 permeance, as well as CO2/N-2 and CH4/N-2 selectivity, making it a promising solution for CO2 capture and natural gas purification.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Multidisciplinary
Rui Guo, Zhiyuan Zha, Jixiao Wang, Zhi Wang, Michael D. Guiver, Song Zhao
Summary: The development of an aminal-linked covalent organic framework membrane with high water permeance and superior ion selectivity provides a new research avenue for designing smart/advanced membrane materials for angstrom-scale separation.
Article
Engineering, Biomedical
Zhenyi Zhao, Wenqing Gao, Yun Chang, Yue Yang, Hechen Shen, Tong Li, Song Zhao
Summary: A novel triple-functional membrane with Janus architecture is proposed for blood oxygenation, consisting of hydrophobic polydimethylsiloxane (PDMS), ultrathin polyamide (PAD), and hydrophilic poly(sulfobetaine methacrylate) (PSBMA) layers. The membrane exhibits excellent oxygenation performance in terms of adequate gas transfer rate and resistances to thrombus formation and plasma leakage, thereby demonstrating novel concepts for the advancement of oxygenation membranes.
ADVANCED HEALTHCARE MATERIALS
(2023)
Article
Engineering, Chemical
Jian Zhang, Ning Pu, Menglin Li, Wenhao Sang, Qing He, Qianqiu Tian, Wen Zhang
Summary: Interest in functional silver has grown due to advances in separation, sensing, catalysis, and biomedical applications. In this study, a new strategy was developed to load single atomic silver species into a fully conjugated polymer. The loaded silver species showed selective binding properties and could be converted into silver nanoparticles. This work highlights the excellent properties and potential applications of the loaded polymers.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)