Article
Green & Sustainable Science & Technology
Qingting Liu, Xiaohe Wang, Xiaoxiao Zhang, Zhiwei Ling, Wenzhuo Wu, Xudong Fu, Rong Zhang, Shengfei Hu, Xiao Li, Feng Zhao, Xujin Bao
Summary: Polyethyleneimine-filled sepiolite nanorods (PEI@SNR)-embedded poly(2,5-benzimidazole) composites (ABPBI/PEI@SNR) were synthesized to enhance the proton conductivity and stability of proton-exchange membrane fuel cells (PEMFCs). The composite membranes showed improved thermal stability and achieved high proton conductivities from room temperature to 200 degrees C. The cell performance of the composite membrane-based PEMFCs was significantly better than previously reported zeolite-embedded membranes.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Engineering, Chemical
Qingting Liu, Chunyong Xiong, Hongying Shi, Lele Liu, Xiaohe Wang, Xudong Fu, Rong Zhang, Shengfei Hu, Xujin Bao, Xiao Li, Feng Zhao, Chenxi Xu
Summary: Novel proton carriers, called halloysite ionogels (IL@HNTs), were prepared by filling the ionic liquid (IL) into the inorganic framework of halloysite nanotubes (HNTs) to replace free phosphoric acid (PA) in polybenzimidazole membranes. The composite membranes showed excellent proton conductivity and mechanical strength from ambient temperature to 180 degrees C, and can absorb PA. This approach broadens the application temperature range of existing proton-exchange membranes.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Chemistry, Physical
Siva Moorthy, Berlina Maria Mahimai, Dinakaran Kannaiyan, Paradesi Deivanayagam
Summary: Porous metal-organic frameworks (MOFs) have attracted attention due to their crystallinity, porosity, and structural designability. In this study, composite membranes based on poly (2,5-benzimidazole) (ABPBI) were developed by incorporating copper-trimesic acid (Cu-TMA) MOFs into the polymer matrix. The membranes' properties, including proton conductivity, were evaluated, and the 3 wt% Cu-TMA loaded membrane exhibited the highest proton conductivity.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Materials Science, Composites
Qingting Liu, Zhiwei Ling, Xiaohe Wang, Xudong Fu, Wenzhuo Wu, Chunyong Xiong, Bei Wang, Rong Zhang, Xiao Li, Feng Zhao, Xujin Bao, Shengfei Hu, Jun Yang
Summary: To prevent leaching of phosphoric acid (PA) and protect polybenzimidazole-based proton exchange membranes, researchers embedded polyethyleneimine-confined halloysite nanotubes (PEI@HNTs) in poly (2,5benzimidazole) membranes. The composite membrane exhibited excellent mechanical strength and electrical performance over a wide temperature range. The addition of PEI@HNTs improved the absorption and retention capacity of PA, leading to enhanced proton conductivity and power density.
COMPOSITES SCIENCE AND TECHNOLOGY
(2023)
Article
Chemistry, Physical
Wei Wei, Yu Dai, Shicheng Xu, Jin Wang, Xiaoxiao Liu, Ronghuan He
Summary: In this study, a polymer proton exchange membrane (PEM) that can work in a wide temperature range was developed and successfully applied in fuel cells and water electrolytic cells. The results showed that the membrane exhibited good proton conductivity at different temperatures, indicating its potential applications.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Zohre Taherkhani, Mahdi Abdollahi, Alireza Sharif, Sara Barati
Summary: The PBI:PVPA polymer electrolyte membranes were fabricated and characterized for proton conductivity at high temperatures. The results indicate that these membranes have promising potential for high-temperature proton exchange membrane fuel cell applications.
SOLID STATE IONICS
(2021)
Article
Chemistry, Multidisciplinary
Peng Sun, Zihan Xia, Zhongfang Li, Ziwei Fan, Fengqi He, Qiang Liu, Xiaoyan Yin
Summary: A high-temperature proton exchange membrane with high proton conductivity over a wide humidity range was synthesized by doping TPBI with ZrSP and post-crosslinking, which enhanced the mechanical stability and conductivity of the membrane material. The prepared membranes showed good thermal stability, high proton conductivity, and dimensional stability, making them promising for various applications.
MATERIALS TODAY CHEMISTRY
(2022)
Article
Chemistry, Physical
Yanbo Chen, Fei Xu, Jing Li, Yuyang Han, Junjie Qiao, Jie Liu, Yao Xu, Bencai Lin
Summary: Poly(fluorenyl terphenyl piperidinium) (PFTP) with an aromatic backbone was synthesized to produce proton exchange membranes (PEMs) with robust mechanical properties. The introduction of propanesulfonic acid side chains enhanced the phosphoric acid (PA) adsorption capacity and proton conductivity of the resulting sulfonated PFTP (SPFTP-x) membranes. These membranes exhibited good thermal, oxidization, and dimensional stabilities, and the SPFTP-x membranes showed higher PA adsorption capacity and higher proton conductivity than the PFTP membrane. A single cell assembled with SPFTP-50 exhibited a maximum power density of 280 mW cm-2 at 100 degrees C, indicating the promising application of SPFTP-x as a membrane material for high-temperature proton membrane fuel cells.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Bei Wang, Zhiwei Ling, Ningning Li, Qingting Liu, Xudong Fu, Rong Zhang, Shengfei Hu, Ziyi Meng, Feng Zhao, Xiao Li
Summary: In this study, composite membranes were prepared by introducing graphene oxide-intercalated montmorillonite into a poly(2,5-benzimidazole) matrix for fuel cell applications at a wide temperature range. The membranes exhibited improved tensile strength, water and phosphoric acid retention ratio, and proton conductivity. The enhanced performance was attributed to the confinement of phosphoric acid and water within the interchannels of the nanolayered stacks.
ACS APPLIED NANO MATERIALS
(2023)
Article
Polymer Science
Khaled Charradi, Zakarya Ahmed, Noura Thmaini, Pilar Aranda, Youssef O. Al-Ghamdi, Pilar Ocon, Sherif M. A. S. Keshk, Radouane Chtourou
Summary: The presence of LDH/sepiolite nanoarchitectured material within SPEEK resulted in the highest water retention and proton conductivity value at high temperature among LDH/SPEEK and pristine SPEEK membranes.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Chemistry, Physical
Lili Liu, Yao Lu, Cong Ning, Na Li, Shouwen Chen, Zhaoxia Hu
Summary: Structure design plays a crucial role in preparing proton exchange membranes (PEMs) with excellent performance. In this study, a series of comb-shaped sulfonated fluorinated poly(aryl ether sulfone) (SPFAES) membranes were synthesized and demonstrated improved proton conductivity and physicochemical stability compared to linear SPFAE membranes. These findings offer a promising example for the synthesis of high-performance PEMs with flexible comb-shaped side chains.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Energy & Fuels
Khadijeh Hooshyari, Hamidreza Rezania, Vahid Vatanpour, Mohadese Rastgoo-Deylami, Hamid Reza Rajabi
Summary: This study focused on the synthesis of SPEKIS and preparation of new nanocomposite blend membranes using ZnS FQDs to enhance the proton conductivity and fuel cell performance of PBI membranes. The interactions between thiazole rings and functional groups of SPEKIS and ZnS FQDs, along with PBI groups, were shown to improve the proton conductivity. The best fuel cell performance was achieved with the SPEKIS/PBI/ZnS FQDs nanocomposite blend membranes, demonstrating promising potential for high-temperature fuel cells.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Chemistry, Physical
Jiashu Long, Xiaocan Zhang, Siqin Zeng, Tong Pei, Huixiao Ma, Xuesong Li, Xiaoyu Meng
Summary: Functionalized metal-organic frameworks (MOFs) are used to enhance the proton conductivity and dimensional stability of proton exchange membranes. The bi-functionalized MOFs material (UNCS) acts as a bridge for proton transport, enabling lower activation energy and shorter distance for proton conduction. The SPEEK/UNCS-3 membrane exhibits the highest proton conductivity of 186.4 mS·cm-1 at 75°C and 100% RH, surpassing pristine SPEEK and Nafion 117. The acid-base interaction between UNCS and SPEEK enhances the dimensional stability and mechanical properties of the composite membranes, and UNCS serves as bridges among proton channels for continuous proton transport.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Bibo Yin, Yingnan Wu, Chunfa Liu, Peng Wang, Lei Wang, Guoxing Sun
Summary: The study introduces a novel design by incorporating three-dimensional network polyacrylamide hydrogels to enhance the proton conductivity of phosphoric acid-doped polybenzimidazole membranes over a wide temperature range. The research demonstrates that the new membranes exhibit high performance in the temperature range of 80-180 degrees Celsius.
JOURNAL OF MATERIALS CHEMISTRY A
(2021)
Article
Polymer Science
Lijun Sun, Shuguo Qu, Xueyan Lv, Jihai Duan, Weiwen Wang
Summary: In this study, a new type of proton exchange membrane (PEM) was successfully prepared by encapsulating different ionic liquids (ILs) in sulfonated poly(ether ether ketone) (SPEEK). Characterization and testing showed that these binary hybrid membranes exhibited good stability and proton conductivity, making them suitable for medium-temperature PEMFC.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Chemistry, Physical
Xudong Fu, Jiadai Wang, Fukang Peng, Yuhong Wang, Shengfei Hu, Rong Zhang, Qingting Liu
Summary: A hybrid proton exchange membrane fuel cell/supercapacitor device (HPSD) with high energy and power densities was proposed and fabricated for the first time. The rGO/Nafion/Pt electrode exhibited better discharge performance than the conventional Nafion/Pt electrode. HPSD showed a higher power density (26.2 kW kg(-1)) and a close energy density (12.7 kWh kg(-1)) to that of the PEMFC.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Engineering, Chemical
Qingting Liu, Chunyong Xiong, Hongying Shi, Lele Liu, Xiaohe Wang, Xudong Fu, Rong Zhang, Shengfei Hu, Xujin Bao, Xiao Li, Feng Zhao, Chenxi Xu
Summary: Novel proton carriers, called halloysite ionogels (IL@HNTs), were prepared by filling the ionic liquid (IL) into the inorganic framework of halloysite nanotubes (HNTs) to replace free phosphoric acid (PA) in polybenzimidazole membranes. The composite membranes showed excellent proton conductivity and mechanical strength from ambient temperature to 180 degrees C, and can absorb PA. This approach broadens the application temperature range of existing proton-exchange membranes.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Polymer Science
Yang Yu, Zheng Zeng, Xuesong Gao, Chunyong Xiong, Huamei Zhu, Hongyu Cen, Xuan Zheng, Qingting Liu, Tao Hu, Chonggang Wu
Summary: To enhance proton conductivity, sulfonated poly(ether ether ketone) (SPEEK) was covalently grafted with segments containing multiple propanesulfonic acid groups (MS-SPEEK-102). The resulting MS-SPEEK-102 exhibited higher proton conductivity and power density compared to SPEEK, attributed to the increased number of sulfonic acid groups and construction of uninterrupted proton-conducting channels through the movement of flexible side-chain segments. This study presents a potential approach for obtaining a proton exchange membrane with improved proton conductivity based on SPEEK.
MACROMOLECULAR RAPID COMMUNICATIONS
(2023)
Article
Materials Science, Characterization & Testing
Zhuohang Liu, Yifan Xiang, Xiang Fang, Zhijian Sun, Juan Wang, Xudong Fu, Qingting Liu, Shengfei Hu, Chuanqun Hu, Ching Ping Wong, Rong Zhang
Summary: In this study, a highly thermal conductive silicone rubber/boron nitride composite was fabricated using multi-layer stacked hot pressing, with enhanced orientation of boron nitride based on rheological characterizations. The composite exhibited excellent heat transfer capability and low interfacial thermal resistance, with a thermal conductivity of 22.08 W/(m·K). The high in-plane thermal conductivity could be converted to high out-plane thermal conductivity after simple vertically cut. Furthermore, the heat transfer capability of the composite was quantitatively characterized using the characteristic temperature rise time constant. Rheological control proved to be an efficient and potential strategy for achieving highly thermal conductive composites.
Article
Chemistry, Physical
Ziyi Meng, Yuxi Zou, Ningning Li, Bei Wang, Xudong Fu, Rong Zhang, Shengfei Hu, Xujin Bao, Xiao Li, Feng Zhao, Qingting Liu
Summary: The performance of Nafion-based proton-exchange membrane fuel cells (PEMFCs) is significantly reduced at low relative humidities, requiring external humidification. To address this issue, a graphene oxide (GO)-intercalated microbial montmorillonite (mMMT) layered stack (GO@mMMT) was developed to improve the proton conductivity of Nafion membranes under low humidity and high temperature conditions. The GO@mMMT/Nafion composite membrane exhibited excellent proton conductivity at various humidities, with a significant increase compared to the recast Nafion membrane. The assembled single cell demonstrated higher peak power density, indicating the potential of Nafion composite membranes with GO@mMMT incorporated layered stacks for PEMFC applications with simplified water management.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Chemistry, Physical
Hong Cai, Tong Yu, Dongrui Xie, Benshuang Sun, Jiang Cheng, Lu Li, Xujin Bao, Hongtao Zhang
Summary: By using the cold sintering process (CSP), Li1.3Al0.3Ti1.7(PO4)3 (LATP) ceramics were pre-densified at reduced temperature and exhibited room temperature ionic conductivity. Subsequent post-annealing significantly improved the grain boundary conductivity and total conductivity, resulting in a conductivity that is among the best reported values. The CSP-assisted process effectively eliminates insulating phases and promotes crack-free microstructure, leading to enhanced conductivity.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Qingting Liu, Yuqing Luo, Shoukun Yang, Yuyue Xiong, Rongxin Wang, Xudong Fu, Rong Zhang, Shengfei Hu, Xujin Bao, Chenxi Xu
Summary: A novel transfer-free in-situ method was developed to prepare poly(2,5-benzimidazole)-grafted electrolytic graphene oxide (ABPBI-EGO) composites for high-temperature proton exchange membrane (PEM) fuel cells. By constructing fast proton-conducting channels through single or few-layered GO nanosheets, the composite membranes exhibited superior proton conductivities over the temperature range of 120-180 degrees C. The ABPBI-0.5EGO composite membrane-based fuel cell achieved significantly higher power density compared to the original ABPBI membrane, showing promise for developing high-performance HT-PEMs.
JOURNAL OF POWER SOURCES
(2023)
Article
Materials Science, Composites
Zhuohang Liu, Yifan Xiang, Yutao Xie, Xiang Fang, Hai Chen, Juan Wang, Xudong Fu, Qingting Liu, Shengfei Hu, Ching Ping Wong, Rong Zhang
Summary: In this study, a highly thermal conductive and compliant composite was fabricated by multilayer-stacking partially vulcanized silicone rubber (SR)/graphite (Gr) composites (Heter-SR/Gr) with high and low Gr contents, and then fully cured by further hot pressing. The multi-step vulcanization endowed great orientation of Gr and covalent bond between layers, thus heightened thermal conductivity, maintained mechanical compliance and enhanced interfacial strength, respectively. The facile strategy is expected to be promoted in further applications.
COMPOSITES SCIENCE AND TECHNOLOGY
(2023)
Article
Materials Science, Composites
Qingting Liu, Zhiwei Ling, Xiaohe Wang, Xudong Fu, Wenzhuo Wu, Chunyong Xiong, Bei Wang, Rong Zhang, Xiao Li, Feng Zhao, Xujin Bao, Shengfei Hu, Jun Yang
Summary: To prevent leaching of phosphoric acid (PA) and protect polybenzimidazole-based proton exchange membranes, researchers embedded polyethyleneimine-confined halloysite nanotubes (PEI@HNTs) in poly (2,5benzimidazole) membranes. The composite membrane exhibited excellent mechanical strength and electrical performance over a wide temperature range. The addition of PEI@HNTs improved the absorption and retention capacity of PA, leading to enhanced proton conductivity and power density.
COMPOSITES SCIENCE AND TECHNOLOGY
(2023)
Article
Nanoscience & Nanotechnology
Bei Wang, Zhiwei Ling, Ningning Li, Qingting Liu, Xudong Fu, Rong Zhang, Shengfei Hu, Ziyi Meng, Feng Zhao, Xiao Li
Summary: In this study, composite membranes were prepared by introducing graphene oxide-intercalated montmorillonite into a poly(2,5-benzimidazole) matrix for fuel cell applications at a wide temperature range. The membranes exhibited improved tensile strength, water and phosphoric acid retention ratio, and proton conductivity. The enhanced performance was attributed to the confinement of phosphoric acid and water within the interchannels of the nanolayered stacks.
ACS APPLIED NANO MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Xudong Fu, Jiexin Wen, Chunguang Xia, Qingting Liu, Rong Zhang, Shengfei Hu
Summary: Nafion-doped polyaniline/graphene oxide composites were synthesized and used as electrode materials for flexible supercapacitors based on Nafion membrane. Nafion doping improved the utilization rate and electrochemical surface area of polyaniline, while graphene oxide enhanced its electrochemical stability. The flexible supercapacitors showed high specific capacitances and good cycling stability.
MATERIALS & DESIGN
(2023)
Article
Engineering, Chemical
Jiawei Hou, Shixuan Guo, Nigel Graham, Wenzheng Yu, Kening Sun, Ting Liu
Summary: A novel 2D composite membrane based on r-HGO and MXene materials was developed, demonstrating exceptional performance for water treatment in terms of permeability, pollutant rejection, and physical stability. The optimization of preparation conditions and material proportions can result in high water flux and efficient removal of pollutants.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Retraction
Engineering, Chemical
Chang Liu, Jinghong Liu, Liang Zhu, Shanfu Tang, Huixin Xiong
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Rui Gao, Caihong Liu, Andreia F. Faria, Qiang He, Chun Yang, Jun Ma
Summary: A novel copolymer architecture has been developed to address biofouling concerns in thin-film composite (TFC) membranes by integrating anti-fouling, bactericidal, and fouling-release functions. The multifunctional membrane demonstrates promising anti-adhesive properties, self-cleaning ability, and high flux recovery rate.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Alexander T. Bridge, Noah P. Wamble, Matthew S. Santoso, Joan F. Brennecke, Benny D. Freeman
Summary: This study demonstrates the reproducible preparation of high-flux defect-free asymmetric gas separation membranes using Cyrene(TM) as a majority dope formulation component. By adjusting the volume ratios of Cyrene(TM) and THF, as well as the concentrations of Matrimid(R) and the dry step time, optimal membrane performance is achieved.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Alessandra Imbrogno, Han Ya Lin, Babak Minofar, Andrea Iris Schaefer
Summary: In this study, a composite nanofiber membrane containing cross-linked beta-cyclodextrin-epichlorohydrin was prepared and evaluated for the removal of steroid hormones. The results showed that the membrane had high adsorption capacity and the ability to form a specific inclusion complex interaction with the hormones, indicating its potential application in hormone removal.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Bora Shin, Jaewon Shin, Yanuar Chandra Wirasembada, Ki Young Park, Jinwoo Cho
Summary: This study develops a mathematical model to estimate the initial flux of volatile fatty acids in the direct contact membrane distillation process. It identifies the parameters affecting the flux and their relationship with pH.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Yi-Jui Yeh, Jr Rong Liou, Wei Lin, Kuo-Lun Tung, Wei-Hung Chiang
Summary: This study demonstrates an effective plasma engineering method to create nitrogen-doped graphene quantum dot (NGQD)-inorganic nanocomposites for tunable molecular separation. The composite materials show high separation efficiency and controllable nanopore structures, making them potentially valuable for various applications.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Horacio Lopez-Marques, Kristofer L. Gleason, Manuel Aguilar-Vega, Rita Sulub-Sulub, J. Ehren Eichler, Hyeonji Oh, C. Buddie Mullins, Benny D. Freeman, Manish Kumar
Summary: In this study, water transport properties in Carbon Molecular Sieve (CMS) membranes were investigated. It was found that membranes synthesized at different pyrolysis temperatures exhibited varying water permeabilities. Compared to other polymeric materials, CMS membranes showed high water permeability, indicating potential for dehydration applications.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Dmitry A. Alentiev, Roman Yu. Nikiforov, Marina A. Rudakova, Danil P. Zarezin, Maxim A. Topchiy, Andrey F. Asachenko, Nikolay A. Belov, Maxim Bermeshev
Summary: A series of new norbornene-type monomers containing linear and branched substituents were synthesized, and robust thin membranes were prepared by vinyl-addition polymerization. Gas separation performance for the synthesized polymers was evaluated, and the structure of substituent side chains was found to significantly affect gas permeability and CO2 facilitated transport.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Lei Yan, Qi Zhang, Ze Zhang, Gui-Jie Li, Yi Jin, Xin-Lin Zhang, Yan-Yun Sun
Summary: In this study, a continuous, stable and fast ion transport channel was established through in-situ guided cross-linking of zinc alginate hydrogels on a porous membrane, overcoming the negative pore effect and effectively inhibiting the dendrite growth of zinc anodes and interfacial side reactions.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Yuqing Zhang, Ailing Zhang, Huiyang He, Yuting Fan, Yongjiang Li, Song Wang, Sanxi Li
Summary: The Langmuir-Blodgett self-assembly process is used to create an ordered SPEEK membrane, which enhances the proton conductivity by three times compared to conventional solution casting method.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Hasan Ismaeel, David Gibson, Eleonora Ricci, Maria Grazia De Angelis
Summary: In this study, a machine learning-based group contribution method (ML-GC) was developed to predict pure polymer parameters and successfully applied to predict gas solubility and gas solubility isotherms in glassy polymeric membranes. The model showed satisfactory performance on a small dataset, but has the potential to provide more accurate predictions for a wider range of polymers as more data becomes available.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Yi Ji, Yu Sun, Huilin Li, Qiang Fu, Yan Zhang
Summary: Previous studies have shown that vibration- or rotation-based techniques can effectively mitigate fouling during membrane filtration. However, it is difficult to incorporate these techniques with spiral wound modules (SWMs) widely used in water and wastewater treatment. This study developed a prototype membrane system to accommodate angular vibrations with a modified SWM, and experimental results showed that applying angular vibrations can effectively control algal fouling in an SWM with lower energy consumption compared to traditional methods.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Lakshmeesha Upadhayaya, Abaynesh Yihdego Gebreyohannes, Muhammad Wakil Shahzad, Usman T. Syed, Sandra L. Aristizabal, Radoslaw Gorecki, Suzana P. Nunes
Summary: Increasing temperatures worldwide pose a significant health risk, exacerbated by high humidity. Conventional air conditioners contribute heavily to carbon dioxide emissions, with dehumidification being a major factor. Membrane-based dehumidification system offers energy efficiency and non-toxic water vapor removal. This study demonstrates a membrane dehumidification system with polymeric hollow fibers coated with a green polyphenol coating, showing remarkable water vapor transport rate and selectivity. Long-term testing reveals minimal decline in vapor transport and a 4-5 times higher coefficient of performance (COP) compared to conventional dehumidifiers, making it a highly competitive, energy-saving device with reduced emissions and a smaller footprint.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Zhengzhong Zhou, Xue Zhu, Yi Yuan, Shaoqiang Wang, Xiaoshan Meng, Taoli Huhe, Qian Wang
Summary: In this study, lignin, a biomass material, was chemically modified and utilized in the interfacial polymerization process to improve the performance of nanofiltration membranes. The modified membranes showed enhanced hydrophilicity and anti-fouling properties, and the optimization of membrane pore size increased permeability. The study also demonstrated the potential application of the membranes in biogas slurry valorization.
JOURNAL OF MEMBRANE SCIENCE
(2024)