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Science China Chemistry 2022年第12期65卷 2548-2557页

作者： Shujing Liu Zheng Lin Changchun Wang Jia Guo State Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular Science and Lab of Advanced MaterialsFudan UniversityShanghai200438China

Two-dimensional covalent organic frameworks(2D COFs)have sparkled wide-ranging research to explore proton-conducting ***,the powder-pressed pellets or continuous membranes of 2D COFs are composed of randomly arranged crystallites,which are undesirable for proton transport via a shortcut *** report a controlled strategy for preparing a conformably oriented free-standing COF membrane to address the critical challenge.A monofunctional aldehyde precursor is used as a modulator to enhance reversible association and optimize growth orientation in an interfacial polymerization *** preferred face-on alignment is achieved throughout the membrane from its flat side to the nanoflake-standing side and,in turn,generates the unidirectional pore channels for accommodating 1,2,4-triazole as proton *** composite merges distinctive features including orientation,crystallinity,porosity,and mechanical strength into one system,exhibiting ultrafast and stable anhydrous proton conduction at high operating temperatures with low activation *** findings offer an innovative strategy for the oriented crystallization of free-standing COF membranes for energy conversion applications.

关键词： covalent organic frameworks oriented crystallization anhydrous proton conduction interfacial polymerization membranes

Development and application of bionic systems consisting of tumor-cell membranes

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2022年第9期23卷 770-777页

作者： Tianjiao PENG Jun YAO Clinical Medical College Henan University of Science and TechnologyLuoyang471003China Department of Oncology the First Affiliated Hospital of Henan University of Science and TechnologyLuoyang471003China Epigenetics and Molecular Biology Laboratory the First Affiliated Hospital of Henan University of Science and TechnologyLuoyang471003China

Malignant tumors pose a serious threat to human health but during the past decade,great progress has been made in the treatment of *** tumorcell membrane is well constructed and can be used to solve problems in tumor ***-cell membranes exhibit not only high biocompatibility duc to their homology but also enhanced therapeutic ffects when combined with ***,nanoma-tcrials show high selectivity,sensitivity,and clinical transformation *** immunotherapy or tumor vaccines have potential clinical application because of tumor-membranc surfacc-specific *** studies have confirmed the feasibility and ad-vantages of using tumorcell membrane incorporated nanosystems for tumor *** all this,we focus in this review on the application of tumor-cell-membrane bionic platforms and,in the summary,provide ideas for new scientific developments.

关键词： membranes tumor clinical

Congenital fibrovascular pupillary membranes: case series with pathological correlation and surgical treatment

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International Journal of Ophthalmology(English edition) 2022年第4期15卷 669-671页

作者： Yi Zhou Cong Fan Xiao-Bo Xia Jian Jiang Eye Center of Xiangya Hospital Central South University Changsha 410008Hunan ProvinceChina

Dear Editor,We present three cases of congenital fibrovascular pupillary membranes(CFPM) with pathological correlation and surgical treatment. CFPM was first described by Cibis et al;as a new entity of anterior segmen... 详细信息

关键词： membranes congenital surgical

Beyond graphene oxides: Emerging 2D molecular sieve membranes for efficient separation☆

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Chinese Journal of Chemical Engineering 2019年第6期27卷 1257-1271页

作者： Yi Liu State Key Laboratory of Fine Chemicals Dalian University of Technology

Recent decades witnessed the significant progress made in the research field of 2D molecular sieve *** comparison with their 3D counterparts, 2D molecular sieve membranes possessed several unique advantages like significantly reduced membrane thickness(one atom thick in theory) and diversified molecular sieving mechanisms(in-plane pores within nanosheets & interlayer galleries between nanosheets). M. Tsapatsis first carried out pioneering work on fabrication of lamellar ZSM-5 membrane. Since then, diverse 2D materials typically including graphene oxides(GOs) have been fabricated into membranes showing promising prospects in energy-efficient gas separation, pervaporation, desalination and nanofiltration. In addition to GOs, other emerging 2D materials, including 2D zeolites, 2D metal–organic frameworks(MOFs), 2 D covalent-organic frameworks(COFs), layered double hydroxides(LDHs), transition metal dichalcogenides(TMDCs), MXenes(typically Ti3C2TX), graphitic carbon nitrides(typically g-C3N4), hexagonal boron nitride(h-BN) and montmorillonites(MT) are showing intriguing performance in membrane-based separation process. This article summarized the most recent developments in the field of 2D molecular sieve membranes aside from GOs with particular emphasis on their structure–performance relationship and application prospects in industrial separation.

关键词： Two-dimentional material Molecular sieves membranes Separation Desalination

Preparation of Three Dimensional Hydroxyapatite Nanoparticles/Poly(vinylidene fluoride) Blend membranes with Excellent Dye Removal Efficiency and Investigation of Adsorption Mechanism

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Chinese Journal of Polymer Science 2019年第12期37卷 1234-1247,I0006页

作者： Jian-Hua Li Hui Zheng Hua-Xiang Lin Bo-Xin Zhang Jia-Bin Wang Tong-Lei Li Qi-Qing Zhang Institute of Biomedical and Pharmaceutical Technology Fuzhou UniversityFuzhou 350001China State Key Laboratory of Photocatalysis on Energy and Environment Fuzhou UniversityFuzhou 350116China Department of Industrial and Physical Pharmacy Purdue University575 Stadium Mall DriveWest LafayetteIN 47906USA

In this work,poly(vinylidene fluoride)(PVDF)membranes with hydrophilicity as well as preeminent mechanical strength and dye removal efficiency were fabricated by blending with three dimensional hydroxyapatite nanoparticles(HAPNPs).Surface chemical composition and morphology of the prepared membranes were systematically investigated by ATR-FTIR,XPS,XRD,FESEM,and EDS mapping *** results verified that a large number of HAPNPs were successfully embedded on the modified membrane ***,HAPNPs content in the casting solution is an important factor that could have profound influence on the structures and performances of PVDF/HAPNPs blend *** optimal membrane M2 with 2 wt%HAPNPs exhibited excellent hydrophilicity,outstanding mechanical strength of 19.60 MPa,and high water flux of(2466±31)L·m^2·h^-*** maximum static adsorption capacity of the optimal membrane was about 10.83 mg/g,which is 3.75 times that of the pristine PVDF membrane(2.89 mg/g).PVDF/HAPNPs membranes were not only utilized for static adsorption,but also applied to dynamic dye *** possible adsorption mechanism between Congo red(CR)and HAPNPs embedded on the blend membranes was firstly discussed in this *** interacted with CR via Lewis reaction,hydrogen bond interaction,as well as electrostatic attraction to achieve the adsorption ***,the PVDF/HAPNPs blend membranes with extraordinary hydrophilicity,mechanical strength,and dye removal efficiency possess tremendous potential for practical applications of wastewater treatment.

关键词： Three dimensional hydroxyapatite nanoparticles PVDF/HAPNPs blend membranes Mechanical strength Dynamic dye removal Adsorption mechanism

Fabrication of Pd-Nb bimetallic doped organosilica membranes by different metal doping routes for H_(2)/CO_(2) separation

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Chinese Journal of Chemical Engineering 2021年第8期34卷 67-75页

作者： Hengfei Zhang Yibin Wei Shufeng Niu Hong Qi State Key Laboratory of Material-Oriented Chemical Engineering Membrane Science and Technology Research CenterNanjing Tech UniversityNanjing 210009China Hongyi Ceramic membranes Research Institute Nanjing Hongyi Ceramic Nanofiltration Membranes Co.Ltd.Nanjing 210009China

Monometallic doping has proved its superiority in improving either permselectivity or H_(2) permeability of organosilica membranes for H_(2)/CO_(2) separation,but it is still challenging to break the trade-off ***,we report a series of Pd-Nb bimetallic doped 1,2-bis(triethoxysilyl)ethane(Pd-Nb-BTESE,PNB)membranes with different metal doping routes for simultaneously improving H_(2) permeance and H_(2)/CO_(2) permselectivity by the synergetic effects of Pd and *** doped Pd can exist in the BTESE network as nanoparticles while the doped Nb is incorporated into BTESE network forming Nb-O-Si covalent *** metal doping routes significantly influence the microstructure of PNB networks and gas separation performance of the PNB *** found that the PNB membrane with Pd doping priority(PNB-Pd)exhibited the highest surface area and pore volume,comparing with Nb doping priority(PNB-Nb)or Pd-Nb simultaneous doping(PNB-PdNb).The PNB-Pd membrane could not only exhibit an excellent H_(2) permeance of~10^(−6) mol·m^(−2)·s^(−1)·Pa^(−1) but also a high H_(2)/CO_(2) permselectivity of *** findings may provide novel insights into preparation of bimetallic doped organosilica membranes with excellent H_(2)/CO_(2) separation performance.

关键词： Hydrogen Separation membranes Bimetallic doping Organosilica

Polymer-based membranes for solvent-resistant nanofiltration:A review

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Chinese Journal of Chemical Engineering 2017年第11期25卷 1653-1675页

作者： Slow Kee Lira Kunli Goh Tae-Hyun Bae Rong Wang Singapore Membrane Technology Center Nanyang Environment and WaterResearch InstituteNanyang Technological UniversityI Cleantech Loop637141 SingaporeSingapore Nanyang Environment and Water Research Institute Interdisciplinary Graduate SchoolNanyang Technological University637141 SingaporeSingapore School of Chemical and Biomedical Engineenng Nanyang Technological University62 Nanyang Drive637459 SingaporeSingapore School of Civil and Environmental Engineering Nanyang Technological University50 NanyangAvenue639798 SingaporeSingapore

Separation of organic mixture is an inevitable process in most modern industrial processes. In the quest for a more sustainable and efficient separation, solvent-resistant nanofiltration(SRNF) has emerged as a promising answer. This is because SRNF is a membrane-based process which offers the key advantages of high efficacy and low energy intensity separation. In particular, polymer-based membranes can offer compelling opportunities for SRNF with unprecedented cost-effectiveness. As a result, intensive research efforts have been devoted into developing novel polymer-based membranes with solvent-resistant capacities as well as exploring potential applications in different types of industries. In this review, we aim to give an overview of the recent progress in the development of the state-of-the-art polymer-based membranes for SRNF in the first section. Emerging nanomaterials for mixed matrix and thin film nanocomposite membranes are also covered in this section. This is followed by a discussion on the current status of membrane engineering and SRNF membrane commercialization. In the third section, we highlight recent efforts in adopting SRNF for relevant industrial applications such as food, bio-refinery, petrochemical, fine chemical and pharmaceutical industries followed by separations of enantiomers in stereochemistry, homogeneous catalysis and ionic liquids. Finally, we offer a perspective and provide deeper insights to help shape future research direction in this very important field of SRNF.

关键词： Nanonltration Solvent-resistant Polymeric membranes Nanomaterials Crosslinking Industrial applications

Optimization of the gas separation performance of polyurethane–zeolite 3A and ZSM-5 mixed matrix membranes using response surface methodology

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Chinese Journal of Chemical Engineering 2019年第1期27卷 110-129页

作者： Hajar Taheri Afarani Morteza Sadeghi Ahmad Moheb Ebrahim Nasr Esfahani Department of Chemical Engineering Tennessee Technological University Department of Chemical Engineering Isfahan University of Technology

In the present work, the response surface method software was used with five measurement levels with three *** were applied for the optimization of operating parameters that affected gas separation performance of polyurethane–zeolite 3A, ZSM-5 mixed matrix *** basis of the experiments was a rotatable central composite design(CCD).The three independent variables studied were: zeolite content(0–24 wt%), operating temperature(25–45 ℃) and operating pressure(0.2–0.1 MPa).The effects of these three variables on the selectivity and permeability membranes were studied by the analysis of variance(ANOVA).Optimal conditions for the enhancement of gas separation performances of polyurethane–3A zeolite were found to be 18 wt%, 30 ℃ and 0.8 MPa *** these conditions, the permeabilities of carbon dioxide, methane, oxygen and nitrogen gases were measured at 138.4, 22.9, 15.7 and 6.4 Barrer respectively while the CO_2/CH_4, CO_2/N_2 and O_2/N_2 selectivities were 5.8, 22.5 and 2.5, ***, the optimal conditions for improvement of the gas separation performance of polyurethane–ZSM 5 were found to be 15.64 wt%, 30 ℃ and 4 *** permeabilities of these four gases(*** dioxide, methane, oxygen and nitrogen) were 164.7, 21.2, 21.5 and 8.1 Barrer while the CO_2/CH_4, CO_2/N_2 and O_2/N_2 selectivities were 7.8, 20.6 and 2.7 respectively.

关键词： Response surface method (RSM) Mixed matrix membranes Analysis of variance (ANOVA) Optimum conditions

Preparation of hollow fiber membranes from mullite particles with aid of sintering additives

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Journal of Advanced Ceramics 2021年第1期10卷 78-87页

作者： Hua LIU Jinyun LIU Zhou HONG Shengxian WANG Xuechao GAO Xuehong GU State Key Laboratory of Materials-Oriented Chemical Engineering College of Chemical EngineeringNanjing Tech UniversityNo.30 Puzhu Road(S)Nanjing 211816China Nanjing Membrane Materials Industrial Technology Research Institute Co. Ltd.No.1 Yuansi RoadPukou Economic Development ZoneNanjing 211808China

Porous mullite hollow fiber membranes were prepared with a combined phase-inversion and sintering method,using three sintering additives including yttrium stabilized zirconia(YSZ),small mullite particles(SMP),and titanium oxide(TiO2)to promote the particle *** results indicated that all the three additives could improve the sintering performance of mullite hollow fiber membranes due to the decrease in activation energy of mullite *** YSZ and T i02 could react with mullite grains to generate composite oxides(e.g.,ZrSi04 and Al2Ti05)during sintering,following a reaction-sintering ***,the newly generated ZrSiO4 was instable and further decomposed into monoclinic ZrO2 and SiO2 in the sintering *** decomposition could avoid excessive embedment of composite oxides among mullite grains which have negative impact on mechanical strength of mullite hollow ***,the doping of YSZ provided a better promotion effect on the sintering of mullite hollow fiber membranes,where the microstructural and mechanical properties are insensitive to the doping content and sintering temperatures,so it could be used as the candidate for the large-scale preparation of mullite hollow fibers.

关键词： mullite sintering additives hollow fiber membranes sintering behavior

Construction of molecule-selective mixed matrix membranes with confined mass transfer structure

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Chinese Journal of Chemical Engineering 2017年第11期25卷 1563-1580页

作者： Weidong Li Fusheng Pan Yimeng Song Meidi Wang Hongjian Wang Shalik Walker Hong Wu Zhongyi Jiang Key Laboratory for Green Chemical Technology of Ministry of Education School of Chemical Engineering and TechnologyTianjin UniversityTianjin 300072China Collaborative Innovation Center of Chemical Science and Engineering Tianjin 300072China Tianjin Key Laboratory of Membrane Science and Desalination Technology Tianjin UniversityTianjin 300072China

Extraordinary mass transfer phenomenon is usually found when the small molecules pass through a confined structure, whose effective size is commensurate with the mean free path of the molecules. Small changes in the confined mass transfer structure(including size, morphology and properties) will lead to significant fluctuations of the mass transfer coefficient. The mass transfer of the penetrant molecules in the dense membranes for pervaporation, gas separation and so on, is located in the scope of confined mass transfer. Incorporating nanofillers into polymer matrix to construct mixed matrix membranes(MMMs) is an effective approach to tune the confined mass transfer structure and enhance the performance of the widely used polymeric membranes. This review focuses on the construction and manipulation of the confined structure in the polymeric membranes via incorporating one-dimensional(1D), two-dimensional(2D) and three-dimensional(3D) *** comparison of the MMMs for pervaporation is summarized, and the research prospective of the MMMs is provided.

关键词： membranes Pervaporation Separation Confined mass transfer structure Dimensional