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Charge polarity inversion and zincophilicity improvement for chitosan separator towards durable aqueous zinc-ion batteries

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Journal of Energy Chemistry 2025年第2期101卷 110-119页

作者： Jiaqi yu Bo Liu Hong Ma Zehua Fan Xiang han Qinghua Tian Jizhang Chen Co-Innovation Center of Efficient Processing and Utilization of Forest Resources College of Materials Science and Engineering Nanjing Forestry University College of Mathematics and Physics Jinggangshan University Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province School of Chemistry and Chemical Engineering Zhejiang Sci-Tech University

Aqueous zinc-ion batteries encounter enormous challenges such as Zn dendrites and parasitic *** modification is a highly effective strategy to address these *** the advantages of low cost,nontoxicity,biodegradability,good film-forming ability,superior hydro phi licity,and rich functional groups,chitosan is an ideal matrix for constructing ***,the presence of positive charges within chitosan in weakly acidic electrolytes is unfavorable for dendrite ***,Schiff base reaction is introduced to modify chitosan matrix,transforming its charge polarity from positive to ***,NbN with excellent zincophilicity is coated onto chitosan matrix,forming a Janus separator with low thickness of 19 μm and considerably improved mechanical *** resultant separator can promote the transport of Zn2+ions while triggering a repulsive shielding effect against anions,therefore dramatically enhancing Zn2+ion transfer number from 0.28 to *** separator can also facilitate desolvation process,improve exchange current density,restrict two-dimensional Zn2+ion diffusion,and enhance electrochemical kinetics,contributing to significantly inhibited dendrite growth,by-product formation,and hydrogen ***,stable and reversible Zn stripping/plating process is enabled for over 2500 h at 2 mA cm-2and 2 mAh *** great rate capability and excellent cyclability can be achieved for full batteries even under harsh *** work provides new insights into separator design for Zn-based batteries.

关键词： Aqueous zinc-ion batteries Charge polarity regulation Chitosan utilization Dendrite inhibition Separator modification

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Mechanistic insight into the synergy between nickel single atoms and nanoparticles on N-doped carbon for electroreduction of CO_(2)

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Journal of Energy Chemistry 2025年第1期100卷 327-336页

作者： Mingdong Sun Wenwen Guan Cailing Chen Chao Wu Xiaoling Liu Biao Meng Tao Chen yu han Jun Wang Shibo Xi yu Zhou State Key Laboratory of Materials-Oriented Chemical Engineering College of Chemical EngineeringNanjing Tech UniversityNanjing 211816JiangsuChina Advanced Membranes and Porous Materials Center Physical Sciences and Engineering DivisionKing Abdullah University of Science and TechnologyThuwal 23955-6900Saudi Arabia Institute of Sustainability for Chemicals Energy and EnvironmentA*STAR(Agency for ScienceTechnology and Research)Jurong IslandSingapore 627833Singapore College of Materials Science and Engineering Sichuan UniversityChengdu 610065SichuanChina

The synergy of single atoms(SAs)and nanoparticles(NPs)has demonstrated great potential in promoting the electrocatalytic carbon dioxide reduction reaction(CO_(2)RR);however,the rationalization of the SAs/NPs proportion remains one challenge for the catalyst ***,a Ni2+-loaded porous poly(ionic liquids)(PIL)precursor synthesized through the free radical self-polymerization of the ionic liquid monomer,1-allyl-3-vinylimidazolium chloride,was pyrolyzed to prepare the Ni,N co-doped carbon materials,in which the proportion of Ni SAs and NPs could be facilely modulated by controlling the annealing *** catalyst Ni-NC-1000 with a moderate proportion of Ni SAs and NPs exhibited high efficiency in the electrocatalytic conversion of CO_(2)into *** Ni K-edge X-ray absorption near-edge structure(XANES)spectra and theoretical calculations were conducted to gain insight into the synergy of Ni SAs and *** charge transfer from Ni NPs to the surrounding carbon layer and then to the Ni SAs resulted in the electron-enriched Ni SAs active *** the electroreduction of CO_(2),the coexistence of Ni SAs and NPs strengthened the CO_(2)activation and the affinity towards the key intermediate of*COOH,lowering the free energy for the potential-determining*CO_(2)→*COOH step,and therefore promoted the catalysis efficiency.

关键词： Single atom catalyst Synergy effect cO2 reduction Carbon catalyst Electrocatalysis

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传统集群低创新性形成机理——基于PFTI视角的分析

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自然辩证法研究 2015年第3期31卷 37-42页

作者：郑健壮靳雨涵浙江大学城市学院浙江杭州310015

将传统集群低创新性简单归结为其空间特征和知识产权保护力度不足,缺乏足够说服力。借助"技术创新获利理论"(简称PFTI理论),从主导设计范式、互补资产和独占性制度三个维度及相互关系出发,探究传统集群整体低创新性及集群企业创新成果... 详细信息

将传统集群低创新性简单归结为其空间特征和知识产权保护力度不足,缺乏足够说服力。借助"技术创新获利理论"(简称PFTI理论),从主导设计范式、互补资产和独占性制度三个维度及相互关系出发,探究传统集群整体低创新性及集群企业创新成果低占有性的"双低规律"。研究显示:随着主导设计范式的形成将导致集群企业创新弱化,集群内企业互补资产的结构失衡和相似性将导致集群整体的低创新性和企业创新成果的低占有性。而在低可占有性制度下,会进一步强化上述两个机理,最终又强化了"双低性"。

关键词：产业集群 PFTI理论创新成果创新占有

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不同技术水平产业集群绩效实现机理比较研究

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科学学研究 2018年第9期36卷 1585-1593页

作者：靳雨涵郑健壮浙江大学管理学院浙江杭州310058 浙江大学城市学院浙江杭州310015

受Adner技术挑战理论的启发，选取杭州安防视频监控产业和温州鞋革业两类不同技术水平的集群进行跨案例比较研究，探究产业链中不同位置企业所面临的技术挑战对不同技术层次产业集群整体绩效影响的作用机制。通过实地调研、二手数据搜... 详细信息

受Adner技术挑战理论的启发，选取杭州安防视频监控产业和温州鞋革业两类不同技术水平的集群进行跨案例比较研究，探究产业链中不同位置企业所面临的技术挑战对不同技术层次产业集群整体绩效影响的作用机制。通过实地调研、二手数据搜集和权威期刊关键词分析等，描述上述两类产业集群产业链结构和技术变迁，并重点分析集群中上游组件商和下游互补件商所面临的技术挑战对集群焦点企业及其整体绩效的影响。研究发现：（1）在高技术集群中，上游组件商所面临的技术挑战对焦点企业和集群整体绩效有促进作用，而下游互补件商所面临的技术挑战对其有抑制作用；（2）在低技术集群中，上游组件商所面临的技术挑战对焦点企业和集群整体绩效无显著相关性，而下游互补件商所面临的技术挑战对其有促进作用。

关键词：产业集群技术挑战产业链集群绩效

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rGO/TiO2/BiOI异质结的制备及光催化性能

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新型炭材料 2020年第4期35卷 394-400页

作者：靳玉涵李春梅张艳峰河北师范大学化学与材料科学学院国家级实验教学示范中心河北省无机纳米材料重点实验室河北石家庄050024

采用水热法制备了不同比例rGO/TiO2/BiOI三元复合物,以甲基橙为模拟污染物考察了样品的光催化性能,用扫描电子显微镜、X射线衍射仪、紫外-可见漫反射光谱仪、X射线光电子能谱仪和电化学方法对样品结构和性能进行了表征。结果表明,可见... 详细信息

采用水热法制备了不同比例rGO/TiO2/BiOI三元复合物,以甲基橙为模拟污染物考察了样品的光催化性能,用扫描电子显微镜、X射线衍射仪、紫外-可见漫反射光谱仪、X射线光电子能谱仪和电化学方法对样品结构和性能进行了表征。结果表明,可见光照射下,Bi/Ti摩尔比为80%的rGO/TiO2/BiOI复合物,在20 min时对甲基橙的降解率达到98%;表明以层状的石墨烯(rGO)为基底,TiO2纳米颗粒均匀附着在BiOI纳米片上,形成了以石墨烯为基底的异质结,异质结在可见光区有较强吸收,改善了光生载流子的分离效率,加快了载流子的迁移速率,从而提高了催化剂的光催化活性。

关键词： rGO/TiO2/BiOI 异质结光催化活性

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Lichen Planus Pigmentosus Inversus:Two Case Reports

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International Journal of Dermatology and Venereology 2022年第2期5卷 116-118页

作者： Se Hoon Lee Minah Cho yu jin han yu Ri Woo Sang Hyun Cho Jeong Deuk Lee Hei Sung Kim Department of Dermatology Incheon St.Mary’s HospitalThe Catholic University of KoreaSeoulSouth Korea Department of Biomedicine&Health Sciences The Catholic University of KoreaSeoulSouth Korea.

Introduction:Lichen planus pigmentosus inversus(LPPI)is a rare a rare variant of lichen planus characterized by hyperpigmented patches with predominating localization in intertriginous *** to its rarity,only a few LPPI cases are *** herein describe two rare cases of *** presentation:The two patients were all with a brownish macular lesion on the intertriginous area.A diagnosis of LPPI was made based on their clinical manifestations,dermoscopic features,and histopathologic features,which revealed an interface change,lichenoid infiltration,and pigmentary ***:LPPI is pruritic or asymptomatic,hyperpigmented macules and patches on the flexural *** axillae and flanks were the most commonly affected areas,followed by the groin and *** half of the female patients had inframammary fold *** shows higher female predominance than Lichen planus *** were fewer cases that lasted more than 3 years compared to ***:LPPI is a rare variant of lichen planus,with a locational characteristic and female ***,in the case of a pigmented disease occurring in the flexural folds,it should be placed in the differential diagnosis.

关键词： lichen planus pigmentosus lichen planus pigmentosus inversus

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Advances in human umbilical cord mesenchymal stem cells-derived extracellular vesicles and biomaterial assemblies for endometrial injury treatment

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World Journal of Stem Cells 2025年第1期17卷 6-21页

作者： Wan-yu Zhang han-Bi Wang Cheng-Yan Deng Department of Obstetrics and Gynecology Peking Union Medical College HospitalChinese Academy of Medical Sciences&Peking Union Medical CollegeBeijing 100730China Department of Obstetrics and Gynecology Peking Union Medical College HospitalBeijing 100730China

Endometrial injury caused by repeated uterine procedures,infections,inflammation,or uterine artery dysfunction can deplete endometrial stem/progenitor cells and impair regeneration,thereby diminishing endometrial receptivity and evidently lowering the live birth,clinical pregnancy,and embryo implantation ***,safe and effective clinical treatment methods or gene-targeted therapies are unavailable,especially for severe endometrial *** cord mesenchymal stem cells and their extracellular vesicles are characterized by their simple collection,rapid proliferation,low immunogenicity,and tumorigenicity,along with their involvement in regulating angiogenesis,immune response,cell apoptosis and proliferation,inflammatory response,and fibrosis,Therefore,these cells and vesicles hold broad potential for application in endometrial *** article reviewed recent research on human umbilical cord mesenchymal stem cells as well as their extracellular vesicles in repairing endometrial injury.

关键词： Endometrial injury Umbilical cord mesenchymal stem cells Extracellular vesicles MicroRNA Biomaterial assemblies Regenerative repair

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Lightweight multifunctional metamaterial with low-frequency vibroacoustic reduction and load-bearing performances

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Applied Mathematics and Mechanics(English Edition) 2025年第3期46卷 403-422页

作者： Qi JIA Dianlong yu Donghai han Jihong WEN National Key Laboratory of Equipment State Sensing and Smart Support College of Intelligence Science and Technology National University of Defense Technology

Metamaterials can control and manipulate acoustic/elastic waves on a subwavelength scale using cavities or additional components. However, the large cavity and weak stiffness components of traditional metamaterials may cause a conflict between vibroacoustic reduction and load-bearing capacity, and thus limit their ***, we propose a lightweight multifunctional metamaterial that can simultaneously achieve low-frequency sound insulation, broadband vibration reduction, and excellent load-bearing performance, named as vibroacoustic isolation and bearing metamaterial(VIBM). The advent of additive manufacturing technology provides a convenient and reliable method for the fabrication of VIBM samples. The results show that the compressive strength of the VIBM is as high as 9.71 MPa, which is nearly 87.81% higher than that of the conventional grid structure(CGS) under the same volume fraction. Moreover, the vibration and sound transmission are significantly reduced over a low and wide frequency range, which agrees well with the experimental data, and the reduction degree is obviously larger than that obtained by the CGS. The design strategy can effectively realize the key components of metamaterials and improve their application scenarios.

关键词： broadband vibration reduction load bearing low-frequency sound insulation multifunctional metamaterial O321

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In situ regeneration of catalyst for Fenton-like degradation by photogenerated electron transportation:Characterization,performance and mechanism comparison

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Chinese Chemical Letters 2025年第1期36卷 529-533页

作者： Ming-Zhen Li Yang Zhang Kun Li Ya-Nan Shang Yi-Zhen Zhang yu-Jiao Kan Zhi-Yang Jiao yu-yuan han Xiao-Qiang Cao College of Safety and Environmental Engineering Shandong University of Science and TechnologyQingdao 266590China Engineering Research Center of Groundwater Pollution Control and Remediation Ministry of Education of ChinaBeijing Normal UniversityBeijing 100875China Environment Research Institute Shandong UniversityQingdao 266237China Institute of Yellow River Delta Earth Surface Processes and Ecological Integrity Shandong University of Science and TechnologyQingdao 266590China

Inactivation of carbon-based transition metal catalysts,which was caused by electron loss,limited their application in advanced oxidation ***,Co and TiO_(2) double-loaded carbon nanofiber material(Co@CNFs-TiO_(2))was synthesized in this *** and chemical catalytic systems were synergized *** was eliminated within 15 *** degradation rate remained above 90%after five cycles,and the 50%promotion proved the high stability of Co@CNFs-TiO_(2).The main reactive oxygen species in this system were sulfate radicals,whereas Co and TiO_(2) represented the active sites of the catalytic *** generated from TiO_(2) during the photocatalytic process were transferred to Co,which promoted the Co(Ⅲ)/Co(Ⅱ)cycle and maintained Co in a low-valence state,thereby stimulating the generation of sulfate *** this study,the effective regulation of reactive oxygen species in the reaction system was *** results provided a guidance for in situ electron replenishment and regeneration of carbon-based transition metal catalysts,which will expand the practical application of advanced oxidation processes.

关键词： Electron transportation Catalyst regeneration Peroxymonosulfate Co Photocatalytic

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Bistable switch molecule DPACdCl_(4) showing four physical channels and high phase transition temperature

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Chinese Chemical Letters 2025年第1期36卷 591-596页

作者： Ying-yu Zhang Jia-Qi Luo Yan han Wan-Ying Zhang Yi Zhang Hai-Feng Lu Da-Wei Fu Institute for Science and Applications of Molecular Ferroelectrics Key Laboratory of the Ministry of Education for Advanced Catalysis MaterialsZhejiang Normal UniversityJinhua 321004China Ordered Matter Science Research Center Jiangsu Key Laboratory for Science and applications of Molecular FerroelectricsSoutheast UniversityNanjing 211189China

Multiple switchable physical channels within one material or device,encompassing optical,electrical,thermal,and mechanical pathways,can enable multifunctionality in mechanical-thermal-opto-electronic *** integrated encryption and enhanced performance in storage and sensing presents a formidable challenge in the synthesis and functionality of new *** an effort to overcome the complexities associated with these multiple physical functions,this study investigates the large-size crystal of DPACdCl_(4)(DPA=diisopropylammonium),revealing significant features in rare multi-channel *** compound demonstrates the ability to switch between"OFF/0"and"ON/1"states in the mechanical-thermal-opto-electronic ***,DPACd Cl_(4)possesses four switchable physical channels,characterized by a higher phase transition temperature of 440.7 K and a competitive piezo-electric coefficient of 46 pC/***,solid-state NMR analysis indicates that thermally activated molecular vibrations significantly contribute to its multifunctional switching capabilities.

关键词： Organic-inorganic hybrid Phase transition Crystal Perovskite Piezoelectricity

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