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Chinese Journal of Chemistry 2017年第5期35卷 673-680页

作者： Xueyi he Mingyue Gang guangwei he Yongheng Yin Li Cao Hong Wu Zhongyi Jiang Key Laboratory for Green Technology of Ministry of Education School of Chemical Engineering and Technology Tianjin University Tianjin 300072 China Collaborative Innovation Center of Chemical Sctence and Engineering (Tianjin) Tianjin 300072 China

Chloromethylated mesoporous silica nanoparticles （CM MSN） were synthesized through co-condensation of tetraethoxysilane and （chloro） phenyltrimethoxysilane precursors using hexadecyl trimethyl ammonium bromide as *** the addition of the particles into chloromethylated poly （ether ether ketone）（PEEK）,the hybrid membranes were prepared by a solution-casting method after complete quatemization of the casting *** successful synthesis of the particles was verified by transmission electron microscopy,X-ray diffraction and Fourier transform infrared spectroscopy while the effect of CM MSN incorporation on membrane performance including thermal stability,mechanical strength and hydroxide conductivity was investigated by thermal gravimetric analysis,electronic stretching machine,alternating-current impedance and so *** to the large pore volume and high surface area of the particles,the hybrid membranes exhibited enhanced hydroxide conductivity （88.7% increase at 60 ℃,100% RH with 5.0 wt% filling content） due to an increase in ion concentration and optimization of the channel ***,higher mechanical strength,thermal and dimensional stability of hybrid membranes were obtained compared with those of the imidazolium PEEK membrane.

关键词： anion exchange membrane chloromethylated mesoporous silica imidazolium poly (ether ether ke-tone) hydroxide conductivity

Highly conductive and robust composite anion exchange membranes by incorporating quaternized MIL-101(Cr)

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Science Bulletin 2017年第4期62卷 266-276页

作者： Xueyi he Mingyue Gang Zhen Li guangwei he Yongheng Yin Li Cao Bei Zhang Hong Wu Zhongyi Jiang Key Laboratory for Green Technology of Ministry of Education School of Chemical Engineering and TechnologyTianjin UniversityTianjin 300072China Collaborative Innovation Center of Chemical Science and Engineering(Tianjin) Tianjin 300072China Institute of Nuclear and New Energy Technology Tsinghua UniversityBeijing 100084China

With well-defined channels and tunable functionality, metal-organic frameworks （MOFs） have inspired the design of a new class of ion-conductive compounds. In contrast to the extensive studies on proton- conductive MOFs and related membranes attractive for fuel cells, rare reports focus on MOFs in preparation of anion exchange membranes. In this study, chloromethylated MIL-101 （Cr） was prepared and incor- porated into chloromethylated poly （ether ether ketone）（PEEK） as a multifunctional filler to prepare imidazolium PEEK/imidazolium MIL-101（Cr）（ImPEEK/ImMIL-101（Cr）） anion exchange membrane after synchronous quaternization. The successful synthesis and chloromethylation of MIL-101（Cr） were veri- fied by transmission electron microscopy, X-ray diffraction and Fourier transform infrared spectroscopy while the enhanced performance of composite membranes in hydroxide conductivity, mechanical strength and dimensional stability were evaluated by alternating-current impedance, electronic stretching machine and measurement of swelling ratio. Specifically, incorporating 5.0wt% ImMIL-101（Cr） afforded a 71.4% increase in hydroxide conductivity at 20℃, 100% RH. Besides, the composite membranes exhibited enhanced dimensional stability and mechanical strength due to the rigid framework of ImMIL- 101（Cr）. At room temperature and the ImM1L-101（Cr） content of 10wt%, the swelling ratio of the ImPEEK/lmMIL-101（Cr） was 70.04% lower while the tensile strength was 47.5% higher than that of the pure membrane.

关键词： MIL-101(Cr)Poly (ether ether ketone) Chloromethylation Quaternization Composite anion exchange membranes

Engineering Covalent Organic Framework Membranes

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Accounts of Materials Research 2021年第8期2卷 630-643页

作者： guangwei he Runnan Zhang Zhongyi Jiang Key Laboratory for Green Chemical Technology of Ministry of Education School of Chemical Engineering and TechnologyTianjin UniversityTianjin 300072China Department of Chemical Engineering Massachusetts Institute of TechnologyCambridgeMassachusetts 02139United States Collaborative Innovation Center of Chemical Science and Engineering Tianjin 300072China Joint School of National University of Singapore and Tianjin University International Campus of Tianjin UniversityBinhai New CityFuzhou 350207China

CONSPECTUS:Membrane technology plays an increasingly important role for sustainable development of our society owing to its huge capability to tackle the energy crisis,water scarcity,environmental pollution,and carbon *** fully unlock the potential of membranes,it is in high demand to develop advanced membrane materials that significantly outperform conventional polymer membrane materials in separation performance and longterm *** emergent covalent organic frameworks(COFs)have been deemed as potent membrane materials because of their unique structure and properties in comparison with polymers,zeolites,and metal organic frameworks(MOFs).(i)First,the highly tunable and ordered crystalline pore structure,high porosity,and excellent stability render COFs an ideal membrane *** are more stable than MOFs and,in some cases,are even more stable than ***,it is easier to introduce functional groups into the COF nanochannels compared with zeolite and ***,COFs are ideally suitable for constructing ordered nanochannels with size in the range of 0.6−3 nm which is difficult to be realized by other materials.(ii)Second,along with the unremitting discovery of diverse platform chemistries such as reticular chemistry,the in-depth understanding of nucleation/growth mechanisms of COFs as well as the rapid progress of manufacturing technologies and various routes to fabricating COF membranes with favorable physical and chemical structures inside the nanochannels are being actively *** generally show better membrane-formation ability owing to their abundant 2D structures,which make it easier to fabricate ultrathin membranes compared with zeolite and MOFs.(iii)Last,a great number of COF membranes exhibit exceptionally high separation performance and stability,establishing their position as the next-generation *** this Account,we discuss three types of engineering toward COF membranes based on Schiff base reaction for h

关键词： stability. zeolite separation

Microstructure Manipulation of Covalent Organic Frameworks(COFs)-based Membrane for Efficient Separations

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Chemical Research in Chinese Universities 2022年第2期38卷 325-338页

作者： MA Hanze WANG Shaoyu REN Yanxiong LIANG Xu WANG Yuhan ZHU Ziting he guangwei JIANG Zhongyi Key Laboratory for Green Chemical Technology of Ministry of Education School of Chemical Engineering and TechnologyTianjin UniversityTianjin 300350P.R.China Collaborative Innovation Center of Chemical Science and Engineering(Tianjin) Tianjin 300072P.R.China Joint School of National University of Singapore and Tianjin University International Campus of Tianjin UniversityFuzhou 350207P.R.China

Covalent organic framework(COF) membranes have exhibited great potential to become the next-generation membranes for efficient separations due to the diverse structures, ordered framework pores, tunable functionality and excellent stability. This review presents the microstructure manipulation strategies for separation performance enhancement of COF membranes in recent years. Based on the three mechanisms of molecular sieving, surface diffusion, and facilitated transport, the structural modulation methods to enhance the selectivity of COF membranes are analyzed in detail. Next, strategies of realizing ultrashort mass transfer pathways and ultralow mass transfer resistance for the permeability enhancement are elaborated. Furthermore, the framework stability in COFs, interlayer stability between COF nanosheets and interfacial stability between COF layer and substrate are discussed. Finally, we discuss the existing challenges and perspectives on the future development of COF membranes, targeting at identifying the most promising strategies and directions for the engineering of COF membranes.

关键词： Covalent organic framework Organic molecular sieve membrane Membrane separation Microporous material

Engineering HOF‑Based Mixed‑Matrix Membranes for Efficient CO_(2) Separation

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Nano-Micro Letters 2023年第4期15卷 76-84页

作者： Yuhan Wang Yanxiong Ren Yu Cao Xu Liang guangwei he Hanze Ma Hongliang Dong Xiao Fang Fusheng Pan Zhongyi Jiang Key Laboratory for Green Chemical Technology of Ministry of Education School of Chemical Engineering and TechnologyTianjin UniversityTianjin 300350People’s Republic of China Haihe Laboratory of Sustainable Chemical Transformations Tianjin 300192People’s Republic of China Guangdong Laboratory of Chemistry and Fine Chemical Industry Jieyang Center Jieyang 522000Guangdong ProvincePeople’s Republic of China Center for High Pressure Science and Technology Advanced Research PudongShanghai 201203People’s Republic of China

Hydrogen-bonded organic frameworks(HOFs)have emerged as a new class of crystalline porous materials,and their application in membrane technology needs to be ***,for the first time,we demonstrated the utilization of HOF-based mixed-matrix membrane for CO_(2) ***-21,a unique metallo-hydrogen-bonded organic framework material,was designed and processed into nanofillers via amine modulator,uniformly dispersing with Pebax *** with the mix-bonded framework,HOF-21 possessed moderate pore size of 0.35 nm and displayed excellent stability under humid feed *** chemical functions of multiple binding sites and continuous hydrogen-bonded network jointly facilitated the mass transport of CO_(2).The resulting HOF-21 mixed-matrix membrane exhibited a permeability above 750 Barrer,a selectivity of~40 for CO_(2)/CH_(4) and~60 for CO_(2)/N_(2),surpassing the 2008 Robeson upper *** work enlarges the family of mixed-matrix membranes and lays the foundation for HOF membrane development.

关键词： Hydrogen-bonded organic framework Tunable size Mixed-matrix membrane Mixed-bond Carbon capture

Regorafenib-loaded poly(lactide-co-glycolide) microspheres designed to improve transarterial chemoembolization therapy for hepatocellular carcinoma

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Asian Journal of Pharmaceutical Sciences 2020年第6期15卷 739-751页

作者： Xiang Li guangwei he Feng Su Zhaoxing Chu Leiming Xu Yazhong Zhang Jianping Zhou Yang Ding State Key Laboratory of Natural Medicines Department of PharmaceuticsChina Pharmaceutical UniversityNanjing 210009China Anhui Province Institutefor Food and Drug Control Hefei 230051China hefei Industrial Pharmaceutical Institute Co Ltd Hefei 230051China

Transarterial chemoembolization(TACE)has been widely introduced to treat hepatocellular carcinoma(HCC)especially for unresectable patients for ***,TACE evokes an angiogenic response due to the secretion of vascular endothelial growth factor(VEGF),resulting in the formation of new blood vessels and eventually tumor ***,we aimed to develop regorafenib(REGO)-loaded poly(lactide-co-glycolide)(PLGA)microspheres that enabled localized and sustained drug delivery to limit proangiogenic responses following TACE in HCC ***-loaded PLGA microspheres were prepared using the emulsion-solvent evaporation/extraction method,in which DMF was selected as an organic phase ***,we optimized the proportion of DMF,which the optimal ratio to DCM was 1:9(v/v).After preparation,the microspheres provided high drug loading capacity of 28.6%,high loading efficiency of 91.5%,and the average particle size of 149μm for *** spectra and XRD were applied to confirming sufficient REGO *** in vitro release profiles demonstrated sustained drug release of microspheres for more than 30 d To confirm the role of REGO-loaded microspheres in TACE,the cell cytotoxic activity on hepG2 cells and anti-angiogenic effects in HUVECs Tube-formation assay were studied in combination with ***,the microspheres indicated the potential of antagonizing miriplatin resistance of hepG2 cells in *** preliminary studies exhibited that REGO could be sustainably released from microspheres for more than 30d after TACE in *** vivo anti-tumor efficacy was further determined in hepG2 xenograft tumor mouse model,demonstrating that REGO microspheres could improve the antitumor efficacy of miriplatin remarkably compared with miriplatin *** conclusion,the obtained REGO microspheres demonstrated promising therapeutic effects against HCC when combined with TACE.

关键词： Regorafenib Microspheres Transarterial chemoembolization hepatocellular carcinoma

China's Tourism Industry:New Year to Bring Chances

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World Economy & China 2000年第Z1期8卷 64-65页

作者： he guangwei(Chairman of the China State Tourism Administration)

Timeflies,andpeople’***’stourismindustrywillsoonbeintheyear2000andtheywillhavetomakechangestoattractandmeetpeople’***,alonghistory...

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Coordination-driven structure reconstruction in polymer of intrinsic microporosity membranes for efficient propylene/propane separation

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The Innovation 2022年第6期3卷 137-144页

作者： Yanxiong Ren Boyang Chong Wei Xu Zhengqing Zhang Lin Liu Yingzhen Wu Yutao Liu Haifei Jiang Xu Liang Hong Wu Hongjun Zhang Bangjiao Ye Chongli Zhong guangwei he Zhongyi Jiang Joint School of National University of Singapore and Tianjin University International Campus of Tianjin UniversityBinhai New CityFuzhou 350207China Key Laboratory for Green Chemical Technology of Ministry of Education School of Chemical Engineering and TechnologyTianjin UniversityTianjin 300072China Chemistry and Chemical Engineering Guangdong Laboratory Shantou 515031China Collaborative Innovation Center of Chemical Science and Engineering(Tianjin) Tianjin 300072China State Key Laboratory of Particle Detection and Electronics University of Science and Technology of ChinaHefei 230026China State Key Laboratory of Separation Membranes and Membrane Processes Tiangong UniversityTianjin 300387China

Polymers of intrinsic microporosity(PIMs),integrating unique microporous structure and solution-processability,are one class of the most promising membrane materials for energy-efficient gas ***,the micropores generated from inefficient chain packing often exhibit wide pore size distribution,making it very challenging to achieve efficient olefin/paraffin ***,we propose a coordination-driven reconstruction(CDR)strategy,where metal ions are incorporated into amidoxime-functionalized PIM-1(AO-PIM)to in situ generate coordination crosslinking *** varying the type and content of metal ions,the resulting crosslinking structures can be optimized,and the molecular sieving capability of PIM membranes can be dramatically ***,the introduction of alkali or alkaline earth metals renders more precise micropores contributing to superior C3H6/C3H8 separation performance.K+incorporated AO-PIM membranes exhibit a high ideal C3H6/C3H8 selectivity of 50,surpassing almost all the reported polymer ***,the coordination crosslinking structure significantly improves the membrane stability under higher pressure as well as the plasticization resistant *** envision that this straightforward and generic CDR strategy could potentially unlock the potentials of PIMs for olefin/paraffin separations and many other challenging gas separations.

关键词： separation porosity crosslinking

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氢化物对锆合金薄板焊缝断裂行为的影响

机械工程学报 2021年第20期57卷 133-140页

作者：王博包陈魏连峰何广伟西南交通大学力学与工程学院成都610031 中国核动力研究设计院反应堆燃料与材料重点实验室成都610041

锆合金被广泛应用于反应堆的燃料管包壳材料,当服役过程中锆合金的力学性能改变时,对其力学性能完整性的评估至关重要。基于小尺寸三点弯曲试样,建立锆合金薄板焊缝的断裂韧度测试方法,完成腐蚀渗氢后锆合金焊缝在室温和360℃下准静态... 详细信息

锆合金被广泛应用于反应堆的燃料管包壳材料,当服役过程中锆合金的力学性能改变时,对其力学性能完整性的评估至关重要。基于小尺寸三点弯曲试样,建立锆合金薄板焊缝的断裂韧度测试方法,完成腐蚀渗氢后锆合金焊缝在室温和360℃下准静态断裂韧度试验,分析氢腐蚀和温度对锆合金焊缝断裂性能的影响。研究结果表明,氢腐蚀和温度均能对锆合金焊缝断裂性能产生显著影响,由于高温条件下聚集在裂尖附近的氢化物溶解,使得360℃下锆合金渗氢焊缝断裂韧度较室温下的断裂韧度有显著提升。

关键词：锆合金焊缝渗氢腐蚀小试样断裂韧度

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脑机接口柔性电极材料研究进展

功能材料 2019年第12期50卷 12026-12034页

作者：贺光伟董旭峰齐民大连理工大学材料科学与工程学院辽宁大连116024 辽宁省能源材料及器件重点实验室辽宁大连116024

脑机接口作为人机交互的一个重要方向,在医疗健康、体能增效、航空航天、智能交通、娱乐游戏等领域具有广泛的应用价值。柔性电极是脑机接口的重要组成,也是脑机接口技术实现的关键。近年来,各种以脑机接口为需求背景的柔性电极材料不... 详细信息

脑机接口作为人机交互的一个重要方向,在医疗健康、体能增效、航空航天、智能交通、娱乐游戏等领域具有广泛的应用价值。柔性电极是脑机接口的重要组成,也是脑机接口技术实现的关键。近年来,各种以脑机接口为需求背景的柔性电极材料不断涌现。对非侵入式、侵入式和半侵入式等3类脑机接口柔性电极材料的研究进展进行归纳和总结,对存在的问题和挑战进行分析,并对各种柔性电极材料在脑机接口领域的应用前景进行展望。

关键词：脑机接口柔性电极材料非侵入式侵入式半侵入式