Article
Engineering, Chemical
Song Liu, Guangyuan Zhou, Gongbi Cheng, Xiaokang Wang, Gongping Liu, Wanqin Jin
Summary: This review focuses on the separation of organic solvent mixtures using pervaporation and vapor permeation processes. These processes, compared with conventional distillation technology, offer lower energy consumption due to thermodynamic vapor-liquid equilibrium limitations. The review discusses different membrane materials and their separation mechanisms, such as affinity and size sieving, as well as the comparison with reverse osmosis process. The potential opportunities and challenges of applying advanced membrane materials for organic solvent mixtures separation are also discussed.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Environmental Sciences
Marco Redolfi
Summary: Significant progress has been made in understanding the free, downstream-migrating bedforms in rivers, revealing some physical mechanisms behind alternate bar formation and proposing a simplified formula to predict the conditions under which these bars form. These studies have filled a gap in understanding the mechanisms of bar formation and demonstrated the close relationship between bar formation and the three-dimensional nature of river bars.
WATER RESOURCES RESEARCH
(2021)
Article
Engineering, Chemical
Yao Liang, Ziye Wang, Ting Yang, Yujia Tong, Weixing Li
Summary: Catalytic pervaporation membranes are effective in promoting esterification reactions. In this study, a catalytic composite membrane (CCM) with a C/PAN/S structure was developed. By adding g-C3N4-SO3H and optimizing the preparation conditions, the CCM demonstrated improved separation performance and stability.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Elisabeth R. Thomas, Jae Sang Lee, Hoda Shokrollahzadeh Behbahani, Ani Nazari, Yusi Li, Yi Yang, Matthew D. Green, Mary Laura Lind
Summary: Water reclamation in spaceflight applications, such as those encountered on the International Space Station (ISS), requires complex engineering solutions. Current vapor compression distillation (VCD) technologies produce concentrated brines and cause scaling. This study evaluates the use of pervaporation membranes coated with zwitterions to manage brine in ISS wastewaters, resulting in reduced scaling and permeance.
Article
Biochemistry & Molecular Biology
Carlos Pena-Varas, Christa Kanstrup, Ariela Vergara-Jaque, Mariela Gonzalez-Avendano, Christoph Crocoll, Osman Mirza, Ingo Dreyer, Hussam Nour-Eldin, David Ramirez
Summary: In this study, computational simulation approaches were used to investigate how the plant glucosinolate transporter GTR1 transports specific substrates. By docking and analyzing a range of GTR1 conformations, key residues essential for substrate transport were identified. The incorporation of structural bioinformatics accelerated the understanding of plant transporter functions and optimized the use of time and resources.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Engineering, Chemical
Yatao Liu, Joana Marie Sipe, Wenhao Xu, Xuewu Zhu, Langming Bai, Daliang Xu, Guibai Li, Heng Liang, Mark R. Wiesner
Summary: This study investigates the impact of nanomaterials on membrane performance using a paired modeling and experimental approach. The results show that the presence of nanomaterials increases the membrane dielectric constant and charge, leading to changes in the separation mechanism.
Article
Chemistry, Inorganic & Nuclear
Feng-Dong Wang, Wen-Hui Su, Chen-Xi Zhang, Qing-Lun Wang
Summary: Cd-MOF, a new type of metal-organic framework, shows high proton conductivity and good stability. The hybrid membrane of Cd-MOF with SPPO polymer has high proton conductivity and potential applications in fuel cells.
INORGANIC CHEMISTRY
(2021)
Article
Engineering, Environmental
Hongpu Kang, Jianzhong Li, Guiyang Yuan, Fuqiang Gao, Xiaoqing Wang, Jinghe Yang
Summary: Rockbolting is commonly used in civil and mining engineering as a support system, but its mechanics in highly fractured rock mass conditions are not well understood. This study constructed large-scale physical models to evaluate the bearing capacity of incoherent rock blocks reinforced by rockbolts. The results showed that lateral confinement and surface support play important roles in the load bearing and deformation capacity of the rock blocks.
BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT
(2022)
Article
Chemistry, Physical
Stefan Milenkovic, Jiajun Wang, Silvia Acosta-Gutierrez, Mathias Winterhalter, Matteo Ceccarelli, Igor V. Bodrenko
Summary: Transmembrane beta-barrel proteins are versatile candidates for various technological applications and their behavior is influenced by environmental conditions. Comparing two highly homologous porins, OmpF and OmpC, we observed subtle amino acid substitutions that can modulate mass transport properties. These differences can be attributed to the disparities in the environmental conditions under which the porins are expressed. Our analysis not only highlights the advantages of enhanced sampling methods, but also provides valuable insights into the biological function and technical applications of these proteins.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Engineering, Chemical
Yunyan Huang, Abraham Sagiv, Raphael Semiat, Hilla Shemer
Summary: Donnan Dialysis (DD) uses ion exchange membranes to selectively transport target ions, and a computational model has been developed to predict ion concentration profiles and transport mechanisms in DD processes. The model has been verified and validated with experimental data, demonstrating its accuracy and reliability.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Review
Multidisciplinary Sciences
Tingting Yu, Jingtan Zhu, Dongyu Li, Dan Zhu
Summary: Advanced optical methods combined with various probes have enabled molecular imaging within living cells, but improving imaging resolution to the subcellular level is a major challenge for larger tissues and in vivo studies. Tissue optical clearing techniques offer innovative ways to perform deep-tissue imaging, with various methods developed based on similar physical principles but using different chemical approaches. This includes refractive index matching and chemical treatments to reduce scattering and absorption for deeper tissue imaging.
Article
Thermodynamics
Edgardo J. Tabilo, Nelson O. Moraga
Summary: A diffusion-convective mass transfer mathematical conjugated model was developed for butanol recovery from a recirculating aqueous solution using a PDMS membrane. A novel numerical procedure was developed to determine butanol diffusivity in the membrane. The numerical predictions showed good agreement with experimental results, aiding in the improvement of pervaporation process design.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2021)
Article
Green & Sustainable Science & Technology
Meidi Wang, Penghui Zhang, Xu Liang, Junyi Zhao, Yawei Liu, Yu Cao, Hongjian Wang, Yu Chen, Zhiming Zhang, Fusheng Pan, Zhenjie Zhang, Zhongyi Jiang
Summary: The lack of access to clean water for billions of people is a global sustainability challenge, which can be addressed by membrane technologies. The use of covalent organic framework (COF) membranes can achieve ultrafast desalination and excellent fouling resistance, offering great potential in practical applications.
NATURE SUSTAINABILITY
(2022)
Article
Biochemistry & Molecular Biology
Xia Zhan, Kaixiang Gao, Yucheng Jia, Wen Deng, Ning Liu, Xuebin Guo, Hehe Li, Jiding Li
Summary: Incorporating ZIF-8 particles of different sizes into PEG can improve the desulfurization performance of mixed matrix membranes (MMMs). Larger ZIF-8 particles provide more and longer selective transport channels, resulting in higher sulfur enrichment factor. However, the connectivity between larger ZIF-8 particles and adjacent particles is poor, leading to lower molecular transport efficiency in the membrane.
Article
Engineering, Chemical
Kim R. Kristiansen, Oivind Wilhelmsen, Signe Kjelstrup
Summary: This study presents a non-equilibrium thermodynamics approach for analyzing transport mechanisms in direct-contact membrane distillation. By incorporating the properties of the membrane, membrane interfaces, and temperature polarization layers, a unified framework is established to assess mass and heat transfer. The approach reveals that the temperature difference across the membrane is the true driving force of mass transfer, and simplifying models can disregard certain effects.
Article
Materials Science, Multidisciplinary
Liang Wu, Xing-Xing Ding, Xiao-Feng Zhao, Yuan-Huan Liu, Xue-Long Hao, Ai-Tao Tang, Gen Zhang, Fu-Sheng Pan
Summary: In situ-grown Mg-Al layered double hydroxide (LDH) films were obtained on an anodized AZ31 substrate by immersing the sample in different concentrations of Al3+ solution. The structure, composition, and morphology of the LDH films were analyzed, and their corrosion behavior was studied using electrochemical impedance spectroscopy (EIS). The results showed that the interconnected MgAl-LDH nanosheets formed a nest-like structure in the LDH film. LDH obtained in 0.032 mol center dot L-1 Al3+ solution had a dense laminated structure and effectively sealed the porous surface of the anodic oxide film. EIS results demonstrated that the corrosion resistance of the LDH-coated samples was significantly improved compared to the anodized alloy.
Article
Metallurgy & Metallurgical Engineering
Qin Zhang, Yaobo Hu, Jun Wang, Fusheng Pan
Summary: In this work, CuS submicron spheres were synthesized using a low-temperature strategy and applied as a high-performance cathode for rechargeable magnesium batteries (RMBs). The CuS cathodes exhibited fast diffusion kinetics and remarkable storage performance due to the presence of nano needle-like particles on their surface. The investigation of the storage mechanism revealed a two-step conversion reaction controlled by diffusion during the electrochemical reaction process.
JOURNAL OF MAGNESIUM AND ALLOYS
(2023)
Article
Materials Science, Multidisciplinary
Qun Luo, Xingrui Li, Qian Li, Lingyang Yuan, Liming Peng, Fusheng Pan, Wenjiang Ding
Summary: The addition of La element to Al-Si alloy has significant improvement effects, achieving refinement of α-Al grains and modification of eutectic Si simultaneously.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Yanning Chen, Liang Wu, Wenhui Yao, Jiahao Wu, Yuan Yuan, Bin Jiang, Fusheng Pan
Summary: The MgAl Layered double hydroxides (LDHs)/graphene oxide (GO) composite film was synthesized in situ on the micro-arc oxidation (MAO) film of AZ31 magnesium alloy using hydrothermal chemical conversion method. The growth behavior and corrosion properties of the composite film were investigated. The results showed that the composition and morphology of the composite film changed gradually with the extended hydrothermal treatment time, utilizing the self-dissolved cation in the MAO film as the LDHs source. The MAO/LG-12 h coating exhibited higher corrosion resistance (1.28 x 10-9 A/cm2) compared to the MAO coating (8.49 x 10-6 A/cm2), thanks to the synergistic effect of GO and LDHs.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2023)
Article
Chemistry, Physical
Yulong Wu, Liang Wu, Wenhui Yao, Yonghua Chen, Yan Zhou, Linqian Wang, Ting Wu, Bin Jiang, Andrej Atrens, Fusheng Pan
Summary: ZnAl-LDH-NO3 nanosheets were grown on MXene to inhibit its self-aggregation, and then mixed with epoxy resin and spun onto Mg PEO coatings. The resulting ZnAl-LDH-NO3@MXene nanocomposite exhibited long-term dispersibility and satisfactory sealing of the coatings. The synergistic effect between LDH and MXene nanosheets, along with the self-healing function provided by nitrate intercalation, contributed to the low wear rate and corrosion current density of the final coating. This work proposed a new strategy for MXene-based nanocomposites in anticorrosion/wear applications in epoxy coatings.
Article
Construction & Building Technology
Danqian Wang, Sanlve Pei, Ye Wang, Kai Ma, Chaoneng Dai, Jinxing Wang, Jingfeng Wang, Fusheng Pan
Summary: The effect of the magnesium-to-phosphate (M/P) ratio on the corrosion resistance of magnesium alloys embedded in magnesium phosphate cement pastes was investigated. The results showed that the corrosion resistance of magnesium alloys increased with an increased M/P ratio. The pH value played a dominant role in the protective capability of the oxide film formed on the magnesium alloy.
CEMENT & CONCRETE COMPOSITES
(2023)
Article
Engineering, Environmental
Lei Liu, Jinglei Lei, Ting Liu, Bo Shang, Xingwang Zhao, Jianxin He, Fusheng Pan, Lingjie Li
Summary: In this work, an artificial skin with fast and robust self-healing ability was designed and fabricated to provide durable intelligent protection for magnesium alloys. The artificial skin consists of a hydrothermal film layer made of magnesium (hydr)oxides and a polymer film layer made of polyethyleneimine (PEI) and polyacrylic acid (PAA). It can heal cuts of 25 μm-120 μm within 25 minutes under moist atmosphere, and shows exceptional self-healing robustness to various severe damage.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Nanoscience & Nanotechnology
Yuhan Wang, Yanxiong Ren, Yu Cao, Xu Liang, Guangwei He, Hanze Ma, Hongliang Dong, Xiao Fang, Fusheng Pan, Zhongyi Jiang
Summary: For the first time, the utilization of HOF-based mixed-matrix membrane for CO2 separation was demonstrated. HOF-21, a unique metallo-hydrogen-bonded organic framework material, was uniformly dispersed with Pebax polymer to form nanofillers via amine modulator. The resulting HOF-21 mixed-matrix membrane exhibited excellent stability under humid feed gas and surpassed the 2008 Robeson upper bound in terms of permeability and selectivity.
NANO-MICRO LETTERS
(2023)
Article
Materials Science, Multidisciplinary
Lintao Liu, Liping Wei, Jianfei Xiao, Shengwen Bai, Bin Jiang, Chao He, Guangsheng Huang, Dingfei Zhang, Fusheng Pan
Summary: Novel turned-bearing extrusions (TBE) are developed to improve the strengths of AZ31 alloy sheets by introducing additional shear strain during preparation. Numerical simulations show that high strain leads to grain refinement through dynamic recrystallization (DRX), but also increases temperature and consumes dislocations. The SC-TBE sheet exhibits finer grains and a higher residual dislocation density compared to the DC-TBE sheet or conventional extrusion (CE) sheet. Overall, these findings provide insights for developing stronger Mg alloy sheets.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Xu Chen, Jianbo Li, Yitao Wang, Huan Luo, Bo Guan, Xianhua Chen, Kaihong Zheng, Fusheng Pan
Summary: A titanium particle-reinforced AZ91 matrix composite (Tip/AZ91) was prepared by powder metallurgy method. The hot deformation behavior of the Tip/AZ91 composite was investigated through isothermal compression tests. Microstructure observations showed a uniform distribution of titanium particles in the composite, with a diffusion layer containing magnesium, titanium, and aluminum elements between the particles and the magnesium matrix. The deformation mechanism was dominated by dislocation climb, and the presence of a particle deformation zone was observed.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Engineering, Chemical
Yuhang Guo, Liping Shao, Runnan Zhang, Wenqing Gao, Shiyao Yu, Yuqian Du, Guangzhaoyao Yang, Fusheng Pan, Tong Li, Zhongyi Jiang
Summary: This study proposed a surface segregation strategy in thermally induced phase separation (TIPS) to achieve in-situ surface modification of poly (4-methyl-1-pentene) (PMP) membranes. Hetero-structured PMP membranes with hydrophilic hemocompatible surface and hydrophobic body were obtained. The hydrophilic surface effectively improved membrane hemocompatibility through hydration layer effect and steric hindrance effect, reduced platelet adhesion significantly, and prolonged coagulation time within the normal physiological range. The membrane exhibited optimal gas permeability and blood oxygenation performance, as well as resistance to plasma leakage for more than two months.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Engineering, Chemical
Zhiming Zhang, Hong Wu, Li Cao, Meidi Wang, Hongjian Wang, Fusheng Pan, Zhongyi Jiang
Summary: Graphene oxide (GO) lamellar membranes suffer from low flux and poor stability for practical applications due to tortuous transport pathways and weak interlamellar interactions. In this study, porous vermiculite (PVMT) nanosheets were incorporated into the GO-based membranes to establish fast and robust water-selective pathways. PVMT nanosheets provided in-plane pores, reducing the tortuosity and mass transport distance. The hydrophilicity and interlayer distance were enhanced by PVMT nanosheets, contributing to water-selective transport. The resulting membranes exhibited excellent dehydration performance with increased permeation flux and separation factor compared to pristine GO/PTFE membranes, while maintaining stability for 192 h operation. This study may inspire further research in constructing mass-transfer pathways within lamellar membranes.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Engineering, Chemical
Jin Du, Shuwei Liang, Meidi Wang, Yuhan Wang, Tianpei Yi, Zhiming Zhang, Fusheng Pan, Zhongyi Jiang
Summary: Cu-TAPB-COF nanosheets were synthesized and introduced into Pebax®2533 matrix to construct facilitated transport membranes for toluene/n-heptane mixtures. The Cu-TAPB-COF nanosheets provided continuous low mass transfer resistance channels and uniformly distributed facilitated transport sites. The resulting membrane exhibited higher adsorption selectivity and lower swelling degree compared with pure Pebax membrane. It showed high pervaporation separation performance for the toluene/n-heptane mixture.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Metallurgy & Metallurgical Engineering
Dongmei Pu, Xianhua Chen, Jingfeng Wang, Jun Tan, Jianbo Li, Hong Yang, Bo Feng, Kaihong Zheng, Fusheng Pan
Summary: The ageing behavior of as-extruded Ti-P/VW94 composites was studied. The peak hardness of the composites increased compared to the matrix alloy, with the 5% Ti-P/VW94 composite showing the highest peak hardness of 148.7 HV after aging for about 50 h. However, the hardness increments first decreased and then slightly increased with increasing Ti particle content due to the introduction of high-density dislocations by Ti particles.
ACTA METALLURGICA SINICA-ENGLISH LETTERS
(2023)
Review
Chemistry, Physical
Qingshan Yang, Dan Zhang, Peng Peng, Guobing Wei, Jianyue Zhang, Bin Jiang, Fusheng Pan
Summary: Magnesium alloy is a widely used lightweight metal material with high specific strength and stiffness. Improving the room temperature forming performance of Mg alloy sheets through extrusion technology is crucial. Our research group has developed a new asymmetric extrusion technology and elucidated the process characteristics, texture control mechanism, and forming properties of Mg alloy sheets. The findings present an innovative extrusion technology for highly formable Mg alloy sheets. Evaluating the importance of this study: 8 points
