Article
Engineering, Chemical
Chengcai Li, Xingyu Chen, Jie Luo, Feng Wang, Guojin Liu, Hailin Zhu, Yuhai Guo
Summary: A PVDF composite membrane with good hydrophilic performance and antibacterial property was developed using an in-situ blending process. By varying the contents of modified PVDF powder, the oil-in-water emulsion separation efficiency of the composite membrane was regulated. The membrane showed excellent permeation flux, oil rejection rate, flux recovery rate, anti-fouling performances, and antibacterial properties against E. coli and S. aureus.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Engineering, Chemical
Yuanyue Sun, Yuanfa Liu, Xitong Zhang, Wenwen Zhang, Xuan Wang, Yuemeng Yue, Jing Guo, Yue Yu
Summary: A novel CO2-responsive copolymer was successfully synthesized and used in the fabrication of a blend membrane with switchable water flux. The protonation reaction of PDEAEMA segments within the membrane pores after CO2 aeration led to pore shrinkage and reduced water flux. By taking advantage of the CO2-stimulus responsiveness, a green cleaning method using alternate aeration was adopted to clean protein on the membrane surface, achieving a satisfactory flux recovery rate comparable to traditional cleaning methods.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Engineering, Environmental
Jenny Nambikkattu, Noel Jacob Kaleekkal
Summary: Direct contact membrane distillation (DCMD) is a versatile thermal-driven membrane separation technique used for seawater distillation and water recovery. The study successfully fabricated robust hydrophobic PVDF-co-HFP membranes with excellent anti-wetting and anti-fouling properties through a central composite design and a dual modification strategy. These membranes exhibited high water contact angle, high salt rejection, stable permeate flux, and total organic carbon rejection, making them suitable for long-term seawater desalination.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Engineering, Environmental
Wanying Xie, Ji Li, Feiyun Sun, Wenyi Dong, Zijun Dong
Summary: By using a novel integrated strategy of hydrophilic membrane modification and low-pressure operation, the permeability and anti-fouling ability of PVDF membrane were improved. The concepts of critical flux (J(C)) and threshold flux (J(TH)) were recommended as fouling-control tools, resulting in effectively reducing irreversible fouling and controlling reversible fouling. The enhancement of J(C) and J(TH) is believed to be mainly related to the better hydrophilicity and local hydraulic condition of the PVDF-TiO2 modified membrane.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Engineering, Environmental
Yifan Wang, Xing Zheng, Dongfei Li, Fangang Meng, Jiayu Tian, Mian Wang, Li Li, Hua Wu, Yaozhong Zhang
Summary: This study used QCM-D and AFM techniques to investigate the effect of monovalent cations on the fouling of sodium alginate on membrane surfaces. The results showed that both Na+ and K+ can enhance the adsorption capacity of SA on the membrane surface, with SA fouling being more severe in the presence of Na+ compared to K+. Additionally, GO-PVDF membranes were more susceptible to SA fouling when Na+ or K+ was present compared to PVDF membranes.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2022)
Article
Environmental Sciences
Thanigaivelan Arumugham, Mariam Ouda, Rambabu Krishnamoorthy, Abdul Hai, Nirmala Gnanasundaram, Shadi W. Hasan, Fawzi Banat
Summary: Bimetallic oxide nanoparticles, particularly Fe2O3-Mn2O3, were synthesized and used as nanomodifiers for PES ultrafiltration membranes, significantly enhancing water contact angle, surface roughness, porosity, and pure water flux for the membrane containing 0.25 wt% nanoparticles. The modified PES membranes exhibited improved antifouling ability and higher flux recovery ratios in protein-based filtration tests.
ENVIRONMENTAL RESEARCH
(2022)
Article
Engineering, Environmental
Liu Shi, Jiadong Liu, Yijia Wang, Bo Gao, Mika Sillanpaa
Summary: By doping FeCl3 into the PVDF membrane, a PEDOT-modified membrane with excellent performance was prepared, with the optimal oxidant concentration of 20%.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Engineering, Chemical
Dapeng Liu, Ming Qiu, Ganwei Zhang, Junlu Cao, Yaoliang Hong
Summary: In this study, a PVDF nanofibrous membrane with a liquid-like coating was successfully fabricated using a simple method. The uniform distribution of PDMS and TiO2 nanoparticles on the surface of the coating resulted in a membrane with superhydrophobic and slippery characteristics. Experimental results showed that the coated membrane effectively mitigated membrane scaling and wetting, while maintaining high permeability and selectivity, making it a promising candidate for durable membrane distillation applications.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Environmental
Eunjoo Koh, Nahyun Cho, Hee Min Park, Yong Taek Lee
Summary: In this study, chemically modified polyvinylidene fluoride (PVDF) hollow fiber membranes with anionic-hydrophilic and hydrophobic materials exhibited excellent properties for separating bacteria and particles. The modified membranes showed high fouling resistance and a higher protein recovery ratio compared to the pristine membrane. The developed membranes can be applied in biopharmaceutical production and removal of proteins, retro viruses, and bacteria.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Engineering, Chemical
Libing Zheng, Min Tang, Yize Wang, Deyin Hou, Xiaoyu Li, Jun Wang
Summary: A novel Janus membrane was developed with Cu-BTC metal-organic frameworks coating on PVDF membrane, showing excellent anti-oil-fouling and anti-NOM-fouling properties. The main antifouling mechanisms included hydration layer formation, slip boundary effect, and electrostatic repulsion. Inorganic fouling was predominant for high CP and inorganic-organic coupling, while humic acid exhibited stronger hydrogen bond interactions in the Janus membrane.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Environmental
Hieu Trung Nguyen, Si-Yu Guo, Sheng-Jie You, Ya-Fen Wang
Summary: In this study, PDVF membranes with a La-doped TiO2 photocatalytic coating from waste fluorescent powder were successfully fabricated. The La-TiO2 photocatalysts exhibited high photocatalytic activity and the La-TiO2 coated PVDF membrane showed excellent performance in terms of efficiency and water contact angle, indicating antifouling and self-cleaning properties.
ENVIRONMENTAL ENGINEERING RESEARCH
(2022)
Article
Environmental Sciences
Gongduan Fan, Chongguo Chen, Xiaolei Chen, Zhongsheng Li, Shulei Bao, Jing Luo, Dingsheng Tang, Zhongsen Yan
Summary: In this study, PVDF ultrafiltration membranes were modified using graphite oxide, Ag3PO4, and Ag3PO4-GO nanomaterials, with the P-AgP@GO membrane demonstrating the best performance and excellent stability under different operating conditions. Photocatalysis can enhance the self-cleaning performance of the P-AgP@GO membrane, and prolonging visible light irradiation time contributes to membrane reusability.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Materials Science, Multidisciplinary
Yoon Huh, Seulgi Yu, June Huh, Joona Bang
Summary: Herein, we present a facile method for preparing superhydrophobic oil/water separation membranes. The covalent bonding of PVDF on the surface enhances the stability and results in excellent separation performance under various environments.
ACS APPLIED POLYMER MATERIALS
(2022)
Article
Engineering, Environmental
Yuchen Yuan, Chang Tian, Jiadong Liu
Summary: The organic conductive membrane prepared by chemical vapor deposition on a PVDF membrane surface showed stable chemical properties and anti-fouling performance after modification, with a slight decrease in adsorption capacity. Additionally, the presence of an electric field further enhanced the anti-fouling properties of the modified membrane compared to the blank and modified membranes without electric field.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Materials Science, Characterization & Testing
Hamid Reza Abdolmaleki, Seyyed Abbas Mousavi, Hamid Heydari
Summary: Surface-modified membranes were prepared by grafting hyperbranched polyethyleneimine (HBPEI) onto polyvinylidene fluoride (PVDF)-sulfonated polyethersulphone (SPES) blending membranes. The well-attached positive-charged HBPEI grafting layer on the PVDF membrane surface was achieved through electrostatic interactions between HBPEI and SPES. The optimum membrane showed a total permeation flux of 35.5 L per square meter per hour (LMH) and paint rejection of 99.9%, with a fouling parameter showing a flux recovery ratio of 90%.
Article
Engineering, Chemical
Xiang Shen, Yiping Zhao, Li Chen
CHEMICAL ENGINEERING & TECHNOLOGY
(2015)
Article
Materials Science, Multidisciplinary
Gao Youzhi, He Yang, Zhao Yiping, Chen Li, Yan Fanyong
JOURNAL OF MATERIALS SCIENCE
(2016)
Article
Engineering, Biomedical
Rui Xu, Qianqian Feng, Yang He, Fanyong Yan, Li Chen, Yiping Zhao
JOURNAL OF BIOMEDICAL MATERIALS RESEARCH PART A
(2017)
Article
Engineering, Chemical
Yang He, Lihao Xu, Xia Feng, Yiping Zhao, Li Chen
JOURNAL OF MEMBRANE SCIENCE
(2017)
Article
Chemistry, Multidisciplinary
Zihan An, Rui Xu, Fengying Dai, Gaojian Xue, Xiaoling He, Yiping Zhao, Li Chen
Article
Chemistry, Applied
Yang He, Xi Chen, Fengying Dai, Rui Xu, Ning Yang, Xia Feng, Yiping Zhao, Li Chen
REACTIVE & FUNCTIONAL POLYMERS
(2018)
Article
Nanoscience & Nanotechnology
Peng Jiang, Yang He, Yiping Zhao, Li Chen
ACS APPLIED MATERIALS & INTERFACES
(2020)
Article
Engineering, Chemical
Xiang Shen, Peng Liu, Chixian He, Shubiao Xia, Jianjun Liu, Feixiang Cheng, Hongbo Suo, Yiping Zhao, Li Chen
Summary: A highly hydrophilic polyacrylonitrile (PAN) membrane was successfully developed via thiol-ene click chemistry in this study. The PEGylated PAN membrane showed excellent anti-fouling and separation performance, with a separation efficiency of 99.9% for different oil-in-water emulsions.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Chemistry, Physical
Yangyang Chen, Lianhuan Wang, Heyu Sun, Dongdong Zhang, Yiping Zhao, Li Chen
Summary: The study demonstrates that the catalytic performance of NGO-TiO2 composite catalysts can be improved with an appropriate ratio of NGO loading. A new mechanism explains how NGO enhances the TiO2 performance and addresses the posttreatment issue effectively.
APPLIED SURFACE SCIENCE
(2021)
Article
Engineering, Chemical
Qi Chen, Yang He, Yiping Zhao, Li Chen
Summary: By combining the anti-oxidative property of tannic acid with high biocompatibility of poly (N-acryloyl morpholine), researchers successfully developed hemodialysis membranes that directly quenched excess reactive oxygen species and improved antioxidant enzymes activities. These functionalized membranes show superior comprehensive performances in terms of anti-oxidative stress, biocompatibility, and dialysis efficiency, providing a promising candidate for addressing long-term hemodialysis complications.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Engineering, Chemical
Qi Chen, Yang He, Yiping Zhao, Li Chen
Summary: Functionalized hemodialysis membranes coated with tannic acid (TA) as a reactive oxygen species (ROS) scavenger can effectively increase serum total antioxidant capacity, suppress lipid peroxidation and protein glycosylation, thereby protecting cardiomyocytes and vascular endothelial cells from oxidative damage.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Materials Science, Biomaterials
Xuchao Qi, Ning Yang, Ying Luo, Xuemeng Jia, Junqiang Zhao, Xia Feng, Li Chen, Yiping Zhao
Summary: Resveratrol-modified polysulfone (PSF) hemodialysis membranes show excellent antioxidant properties and blood compatibility, making them a potential solution for improving oxidative stress status in patients.
MATERIALS SCIENCE AND ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS
(2021)
Article
Engineering, Biomedical
Fuxin Jiang, Jian Ren, Yachai Gao, Jinna Wang, Yiping Zhao, Fengying Dai
Summary: The study successfully constructs stimuli-responsive self-assembled nanovesicles for delivering water-soluble drugs to prevent efflux transport of brain barriers in Alzheimer's disease brain microenvironment. The smart multi-drug delivery vesicle shows promising potential for AD treatment and other central nervous system disorders.
BIOACTIVE MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Yang He, Qi Chen, Yongjian Zhang, Yiping Zhao, Li Chen
ACS APPLIED MATERIALS & INTERFACES
(2020)
Article
Chemistry, Applied
Dongyang Li, Jingjing Lin, Zihan An, Yi Li, Xinran Zhu, Jing Yang, Qiqi Wang, Junqiang Zhao, Yiping Zhao, Li Chen
REACTIVE & FUNCTIONAL POLYMERS
(2020)