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Plasmonic tandem heterojunctions enable high-efficiency charge transfer for broad spectrum photocatalytic hydrogen production

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Journal of Energy Chemistry 2025年第1期100卷 710-720页

作者： Wenxuan Chen Xiu-Qing Qiao Guo Hui Bojing Sun Dongfang Hou meidi wang Xueqian Wu Tao Wu Dong-Sheng Li College of Materials and Chemical Engineering Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion MaterialsChina Three Gorges UniversityYichang 443002HubeiChina Hubei Three Gorges Laboratory Yichang 443007HubeiChina College of Chemistry and Materials Science and Guangdong Provincial Key Laboratory of Supramolecular Coordination ChemistryJinan UniversityGuangzhou 510632GuangdongChina

Rational engineering of semiconductor photocatalysts for efficient hydrogen production is of great significance but still challenging,primarily due to the limitations in charge transfer ***,a fascinating plasmonic tandem heterojunction with the hc-CdS/Mo_(2)C@C heterostructure is aimfully prepared for effectively promoting the charge separation kinetics of the CdS photocatalyst via the synergistic strategy of phase junction,Schottky junction,and photothermal *** difference in atomic configuration between cubic-CdS (c-CdS) and hexagonal-CdS (h-CdS) leads to effective charge separation through a typical Ⅱ charge transfer mechanism,and plasmonic Schottky junction further extracts the electrons in the hc-CdS phase junction to realize gradient charge ***,the photothermal effect of Mo_(2)C@C helps to expand the light absorption,accelerate charge transfer kinetics,and reduce the hydrogen evolution energy *** carbon layer provides a fast channel for charge transfer and protects the photocatalyst from *** a result,the optimized hc-CMC photocatalyst exhibits a significantly high photocatalytic H_(2)production activity of 28.63 mmol/g/h and apparent quantum efficiency of 61.8%,surpassing most of the reported *** study provides a feasible strategy to enhance the charge transfer kinetics and photocatalytic activity of CdS by constructing plasmonic tandem heterogeneous junctions.

关键词： Heterojunctions Mo_(2)C LSPR Photocatalyst Phase junction Schottkyjunction Photothermal effect

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Reducing active layer thickness of polyamide composite membranes using a covalent organic framework interlayer in interfacial polymerization

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Chinese Journal of Chemical Engineering 2020年第4期28卷 1039-1045页

作者： meidi wang Weixiong Guo Zhongyi Jiang Fusheng Pan State Key Laboratory of Petroleum Pollution Control CNPC Research Institute of Safety and Environmental TechnologyBeijing 102206China Key Laboratory for Green Chemical Technology of Ministry of Education School of Chemical Engineering and Technology Tianjin UniversityTianjin 300072China

Polyamide(PA)-based thin-film composite membranes exhibit enormous potential in water purification,owing to their facile fabrication,decent performance and desirable ***,the thick PA active layer with high transport resistance from the conventional interfacial polymerization hampers their *** controllable fabrication of a thin PA active layer is essential for high separation efficiency but still ***,a covalent organic framework TpPa-1 interlayer was firstly deposited on a polyethersulfone(PES)substrate to reduce the thickness of PA active layer in interfacial *** abundant pores of TpPa-1 increase the local concentration of amine monomers by adsorbing piperazine molecules,while hydrogen bonds between hydrophilic groups of TpPa-1 and piperazine molecules slow down their diffusion *** from those synergetic effects,the PA active layer is effectively reduced from 200 nm to 120 *** optimizing TpPa-1 interlayer and PA active layer,the water flux of resultant membranes can reach 171.35 L·m^-2·h^-1·MPa^-1,which increased by 125.4%compared with PA/PES membranes,while the rejection rates of sodium sulfate and dyes solution remained more than 90%and 99%,*** strategy may stimulate rational design of ultrathin PA-based nanofiltration membranes with high performances.

关键词： Thin film composite membranes Interfacial polymerization Covalent organic frameworks interlayer Nanofiltration

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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

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Water-selective hybrid membranes with improved interfacial compatibility from mussel-inspired dopamine-modified alginate and covalent organic frameworks

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Chinese Journal of Chemical Engineering 2020年第1期28卷 90-97页

作者： Hao Yang Hong Wu Fusheng Pan meidi wang Zhongyi Jiang Qifan Cheng Cheng Huang 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) Tianjin 300072China Tianjin Key Laboratory of Membrane Science and Desalination Technology Tianjin UniversityTianjin 300072China State Key Laboratory of Organic-Inorganic Composites Beijing University of Chemical TechnologyBeijing 100029China

Hybrid membranes combining the merits of both polymer matrices and fillers have drawn extensive attention. The rational design of polymer–filler interface in hybrid membranes is vitally important for reducing the occurrence of void defects. Herein, imine-type covalent organic frameworks(COFs) were selected as the fillers due to their totally organic nature and multi-functionalities. Mussel-inspired dopamine-modified sodium alginate(Alg DA) was synthesized as the polymer matrix. The dopamine modification significantly improves the Alg DA–COF compatibility,which enhances the COF content up to 50 wt% in the hybrid membranes. The improved interfacial compatibility enhances the membrane separation selectivity. Accordingly, when utilized for dehydration of ethanol/water mixed solution(water concentration of 10 wt%), the hybrid membrane reveals high water concentration of ~98.7 wt% in permeate, and stable permeation flux larger than 1500 g·m-2·h-1. This work might afford useful insights for fabricating hybrid membranes with high separation selectivity by optimizing the polymer–filler interface.

关键词： Alginate Dopamine Covalent organic framework Membrane Pervaporation Interface

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Aqueous Two-Phase Interfacial Assembly of COF Membranes for Water Desalination

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Nano-Micro Letters 2022年第12期14卷 491-504页

作者： Hongjian wang Jiashuai Zhao Yang Li Yu Cao Ziting Zhu meidi wang Runnan Zhang Fusheng Pan Zhongyi Jiang Key Laboratory for Green Chemical Technology of Ministry of Education School of Chemical Engineering and TechnologyTianjin UniversityTianjin 300072People’s Republic of China Haihe Laboratory of Sustainable Chemical Transformations Tianjin 300192People’s Republic of China Department of Chemistry Tianjin Key Laboratory of Molecular Optoelectronic ScienceTianjin UniversityTianjin 300072People’s Republic of China Joint School of National University of Singapore and Tianjin University International Campus of Tianjin University Binhai New CityFuzhou 350207People’s Republic of China

Aqueous two-phase system features with ultralow interfacial tension and thick interfacial region,affording unique confined space for membrane ***,for the first time,an aqueous two-phase interfacial assembly method is proposed to fabricate covalent organic framework(COF)*** aqueous solution containing polyethylene glycol and dextran undergoes segregated phase separation into two water-rich *** respectively distributing aldehyde and amine monomers into two aqueous phases,a series of COF membranes are fabricated at water-water *** resultant membranes exhibit high NaCl rejection of 93.0-93.6% and water permeance reaching 1.7-3.7 L m^(−2) h^(−1) bar^(−1),superior to most water desalination ***,the interfacial tension is found to have pronounced effect on membrane *** appropriate interfacial tension range(0.1-1.0 mN m^(−1))leads to the tight and intact COF ***,the method is extended to the fabrication of other COF and metal-organic polymer *** work is the first exploitation of fabricating membranes in all-aqueous system,confering a green and generic method for advanced membrane manufacturing.

关键词： Covalent organic framework membranes Aqueous two-phase Interfacial polymerization Molecular separation Water desalination

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Enhanced desulfurization performance of hybrid membranes using embedded hierarchical porous SBA-15

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Frontiers of Chemical Science and Engineering 2020年第4期14卷 661-672页

作者： Ye Zhang Jian Song Josue Quispe Mayta Fusheng Pan Xue Ga Mei Li Yimeng Song meidi wang Xingzhong Cao Zhongyi Jiang School of Chemical Engineering and Technology Tianjin UniversityTianjin 300072China Collaborative Innovation Center of Chemical Science and Engineering(Tianjin) Tianjin 300072China Multi-discipline Research Division Institute of High Energy PhysicsChinese Academy of SciencesBejing 100049China

The utilization of materials with a hierarchical porous structure as multi-functional additives is highly attractive in the preparation of hybrid *** this study,novel hybrid membranes are designed by embed-ding hierarchical porous Santa Barbara Amorphous 15(SBA-15)with a dual-pore architecture(micropores and mesopores)for pervaporation *** SBA-15 with cylindrical mesopores provides molecular transport expressways to ensure improved permeability,while micropores on the wall have molecular sieving effects that are essential for the enhancement of permselectivity of thiophene *** thiophene/n-octane mixture as a model system,the hybrid membrane with embedded 6 wt-%SBA-15 exhibits optimal pervaporation desulfurization performance with a permeation flux of 22.07 kg·m^-2·h^-1 and an enrichment factor of ***,the detailed structure and properties of hybrid membranes are systematically *** study demonstrates the immense potential of hierarchical porous materials as additives in membranes to simultaneously increase permeability and permselectivity.

关键词： hybrid membranes hierarchical porous SBA-15 sieving effect pervaporation desulfurization

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循证健康教育对血管性痴呆患者日常生活能力、认知功能和生存质量的干预价值

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中国基层医药 2022年第5期29卷 773-776页

作者：徐健王美娣陈露王俊杭州市第三人民医院神经内科杭州310009

目的探讨循证健康教育对血管性痴呆患者日常生活能力、认知功能和生存质量的干预价值。方法选择杭州市第三人民医院2018年9月至2020年9月收治的血管性痴呆患者60例为观察对象,采用随机数字表法分为观察组与对照组,每组30例。对照组采取... 详细信息

目的探讨循证健康教育对血管性痴呆患者日常生活能力、认知功能和生存质量的干预价值。方法选择杭州市第三人民医院2018年9月至2020年9月收治的血管性痴呆患者60例为观察对象,采用随机数字表法分为观察组与对照组,每组30例。对照组采取常规健康教育,观察组在常规健康教育基础上实施循证健康教育。比较两组干预总有效率,干预前后长谷川痴呆量表(HDS)和简易智力状态检查量表(MMSE)评分、日常生活自理能力量表(ADL-R)评分和世界卫生组织生存质量测定量表(WHOQOL-100)评分。结果观察组总有效率[96.67%(29/30)]高于对照组[73.33%(22/30)](χ^(2)=4.70,P<0.05)。观察组干预后HDS评分[(20.86±1.75)分]和MMSE评分[(22.54±2.35)分]均高于对照组[(18.21±2.15)分、(19.43±1.86)分](t=5.23、5.68,均P<0.05)。观察组干预后ADL-R评分[(21.74±3.21)分]低于对照组[(27.85±3.90)分](t=6.625,P<0.05)。观察组干预后周围环境[(22.43±2.41)分]、生理健康[(21.83±2.62)分]、社会关系[(21.53±2.89)分]和心理健康[(22.04±1.76)分]评分均高于对照组[(19.65±2.13)分、(18.61±2.24)分、(18.67±1.86)分、(18.97±2.35)分](t=4.73、5.11、4.55、5.72,均P<0.05)。结论循证健康教育对血管性痴呆患者疗效良好,可改善患者日常生活能力和认知功能,提高患者生存质量,具备显著创新性和科学性。

关键词：健康教育循证护理痴呆血管性功能恢复日常生活活动认知障碍生活质量

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2018年4月初哈尔滨市一次罕见重度霾天气过程分析

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农业灾害研究 2022年第6期12卷 92-94页

作者：王美迪梁睿怡民航黑龙江空管分局黑龙江哈尔滨150000

利用气象、环境、卫星遥感监测资料,对2018年4月4—5日出现在哈尔滨市的罕见重度霾天气过程进行分析。结果表明:2018年4月4日21:00~5日13:00,哈尔滨市连续17 h出现了重度及以上级别的污染天气过程,当时的空气质量指数在200以上,且PM2.5... 详细信息

利用气象、环境、卫星遥感监测资料,对2018年4月4—5日出现在哈尔滨市的罕见重度霾天气过程进行分析。结果表明:2018年4月4日21:00~5日13:00,哈尔滨市连续17 h出现了重度及以上级别的污染天气过程,当时的空气质量指数在200以上,且PM2.5是空气中的首要污染物;这次重度霾天气污染过程除了秸秆燃烧是最为主要的排放源外,受供暖燃煤的影响也相对较大,这与往年同阶段供暖期较为吻合;哈尔滨附近有明显的风向辐合,再加上地面风速较小,对于污染物水平扩散极为不利,偏南风和偏东风的作用进一步加剧了霾程度,偏北风及风速的增大作用对于空气污染物沉降和扩散提供了有利条件;霾的形成同污染源和较差扩散条件密不可分,因哈尔滨4月初的逆温等静稳气象条件低于秋冬季节,而春季的秸秆集中焚烧对重度霾天气的贡献较大。

关键词：重度霾天气过程成因哈尔滨

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纺纱方法对棉海藻纤维氨纶包芯纱性能的影响

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棉纺织技术 2013年第10期41卷 11-13页

作者：陈闪闪王建坤王妹娣天津工业大学

探讨纺纱方法对棉海藻纤维氨纶包芯纱性能的影响。采用赛络纺和传统环锭纺两种纺纱方法、5种外包纤维混纺比纺制棉海藻纤维氨纶包芯纱,并进行了性能测试分析。结果表明:纺纱方法对棉海藻纤维氨纶包芯纱质量有较大影响,采用赛络纺可明显... 详细信息

探讨纺纱方法对棉海藻纤维氨纶包芯纱性能的影响。采用赛络纺和传统环锭纺两种纺纱方法、5种外包纤维混纺比纺制棉海藻纤维氨纶包芯纱,并进行了性能测试分析。结果表明:纺纱方法对棉海藻纤维氨纶包芯纱质量有较大影响,采用赛络纺可明显地提高成纱强伸性能、改善条干、减少有害毛羽。外包纤维中,棉与海藻纤维混纺比以65/35时,所获得的纺纱改善效果较好。认为采用赛络包芯纺工艺以及适宜的外包纤维混纺比,可改进在棉海藻纤维氨纶包芯纱成纱质量。

关键词：海藻纤维赛络纺包芯纱强伸性能毛羽条干

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棉海藻纤维氨纶赛络包芯纱的纺制及工艺优化

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棉纺织技术 2012年第5期40卷 5-8页

作者：潘巧灵王妹娣张经纬王建坤天津工业大学

探讨棉海藻纤维氨纶赛络包芯纱的纺制方法及工艺优化。棉与海藻纤维采用原料混和方式,选取5种混纺比,即75∶25、70∶30、65∶35、60∶40、55∶45进行混和,分别对氨纶丝预牵伸倍数、喇叭口间距、细纱捻度进行正交试验,并运用数据包络法... 详细信息

探讨棉海藻纤维氨纶赛络包芯纱的纺制方法及工艺优化。棉与海藻纤维采用原料混和方式,选取5种混纺比,即75∶25、70∶30、65∶35、60∶40、55∶45进行混和,分别对氨纶丝预牵伸倍数、喇叭口间距、细纱捻度进行正交试验,并运用数据包络法对各试验方案测试数据进行分析。得出:棉海藻纤维混纺比60∶40,喇叭口间距1 mm,氨纶丝预牵伸为3倍时,细纱捻度56.6捻/10 cm或氨纶丝预牵伸为3.25倍时,细纱捻度61.6捻/10 cm是32 tex棉海藻纤维氨纶赛络包芯纱的较优工艺参数配置。

关键词：海藻纤维赛络纺氨纶包芯纱正交试验数据包络法

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