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Dual Effects of interfacial interaction and Geometric Constraints on Structural Formation of Poly(butylene terephthalate)Nanorods

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Chinese Journal of Polymer Science 2022年第6期40卷 700-708页

作者： Kaichao Wang Ziwei Lai Jiaman Huang Haiying Li Ziying Liang Junhao Liang Xing Ouyang Xiaoguang Li Yan Cao Institute for Advanced Study(IAS) Shenzhen UniversityShenzhen 518060China College of Materials Science and Engineering Shenzhen UniversityShenzhen 518060China South China Advanced Institute for Soft Matter Science and Technology School of Molecular Science and EngineeringSouth China University of TechnologyGuangzhou 510640China

When the size of the material is smaller than the size of the molecular chain,new nanostructures can be formed by crystallizing polymers in nanoporous ***,the effect of pore wall and geometric constraints on polymer nanostructures remains *** this study,we demonstrate three new restricted nanostructures{upright-,flat-and tilting-ring}in polybutylene terephthalate(PBT)nanorods prepared from nanoporous *** dual effects of geometrical constraints and interfacial interactions on the formation of PBT nanostructures were investigated for the first time by using X-ray diffraction and Cerius^(2) modeling *** weak constraints,the interaction between pore wall and the PBT rings is dominant and the ring plane tends to be parallel to the pore wall and radiate outward to grow the upright-ring ***,in strong 2D confinement,a structural formation reversal occurs and geometrical constraints overpower the effect of pore *** tend to pile up vertically or obliquely along the long axis of the rod,so the flat-and tilting-ring crystals are predominate in the constrained *** principle,our study of the nanostructure formation based on the geometrical constraints and the pore wall interfacial effects could provide a new route to manipulate the chain assembly at the nanoscale,further improving the performance of polymer nanomaterial.

关键词： Cylindrical confinement Poly(butylene terephthalate) Nanorods Geometry constraints interfacial interaction

Freestanding 1T MoS_(2)@MXene hybrid film with strong interfacial interaction for highly reversible zinc ions storage

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Journal of Materials Science & Technology 2024年第21期188卷 183-190页

作者： Haonan Zhai Huibin Liu Yufen Zhang Jinjin Wen Wenyue Yang Huiting Xu Xiaoteng Yan Wenchao Peng Jiapeng Liu School of Chemical Engineering and Technology National-Local Joint Engineering Laboratory for Energy Conservation in Chemical Process Integration and Resources UtilizationHebei University of TechnologyTianjin 300130China School of Chemical Engineering and Technology Tianjin UniversityTianjin 300072China

Aqueous zinc ion batteries(AZIBs)are now gaining widespread attention because of their costeffectiveness,intrinsic saf ety,and high theoretical ***,it is still crucial to exploit highperformance electrode ***,the freestanding 1T MoS_(2)@Mxene hybrid films(MMHF)were synthesized and directly served as the cathode of *** freestanding MMHF exhibited the hierarchical layer structure with excellent conductivity and strong interfacial interaction,which promoted the exposure of more active sites and the transfer of electrons/***,the MMHF displayed a high specific capacity of 270 mAh g^(-1)(at 0.1 A g^(–1))and good rate ***,even after 2500 cycles under 10 A g^(-1),the freestanding MMHF cathode contributed a superior specific capacity of 108 mAh g^(-1)with an outstanding capacity retention rate of 94.7%.Meanwhile,the energy storage mechanism of the MMHF electrode was also elucidated through ex-situ ***,the density functional theory(DFT)computations revealed the strong interfacial interactions between 1T MoS_(2)and MXene,high conductivity,and low Zn^(2+)diffusion *** work provides a new viewpoint for designing freestanding transition metal disulfides(TMDs)-MXene hybrid film electrodes for AZIBs.

关键词： Aqueous zinc ion batteries Freestanding cathode interfacial interaction 1T MoS_(2) MXene

Modification of interfacial interaction of PBT/PP Blends by Adding Main-chain Liquid Crystalline Ionomer with Sulfonic Group

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Chemical Research in Chinese Universities 2012年第2期28卷 340-344页

作者： XU Xin-yu ZHANG Fan XIE Bing-xi Department of Polymer Materials and Engineering School of Chemistry and Materials ScienceLiaoning Shihua UniversityFushun 113001P.R.China

A main-chain liquid crystalline ionomer（MLCI） containing sulfonic group was synthesized by an interfacial condensation *** MLCI was blended with polybutylene terephthalate（PBT） and polypropylene（PP）.MLCI interacted with both the dispersed（PP） phase and the matrix（PBT） phase to modify the interfacial interaction of PBT and *** scanning calorimetry（DSC）,scanning electron microscopy（SEM） and FTIR imaging system analysis demonstrated the significance of interfacial interaction in the polymer *** brought about good adhesion at the interfacial,which reduced the disperse phase size and enabled a fine PP phase at *** mechanical properties of the ternary blends were improved when a proper amount of MLCI was *** was attributed to enhanced adhesion at the interface,which invoked better mechanical properties in the blends.

关键词： Poly(butylent terephthalat) Polypropylene Main-chain liquid crystalline ionomer Sulfonic group interfacial interaction

interfacial interaction of CFRP Reinforced Steel Beam Structures

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Journal of Architectural Environment & Structural Engineering Research 2020年第4期3卷 2-8页

作者： Huaping Wang Hengyang Li Siyuan Feng Tao Song School of Civil Engineering and Mechanics Lanzhou UniversityLanzhouGansu730000China Key Lab of Structures Dynamic Behavior and Control(Harbin Institute of Technology) Ministry of EducationHarbinHeilongjiang150090China

Due to the increase of service life,the phenomenon of performance degradation of bridge structures becomes more and more *** is important to strengthen the bridge structures so as to restore the resistance level and extend the normal service *** fiber reinforced polymer(CFRP)materials are thus used for the assembly reinforcement of bridges for the advantages of high strength,light weight,corrosion resistance and long-term stability of physical and chemical properties,*** view of this,based on the previous theoretical study and the established formula of the interfacial shear stress of CFRP reinforced steel beam and the normal stress of CFRP plate,this paper discusses the sensitive parameters that affect the interfacial interaction of CFRP strengthened beam *** the analysis,the priority design indicators and suggestions are accordingly given for the design of reinforced beam ***’s modulus of CFRP composite and shear modulus of the adhesive have the greatest influence on the interfacial interaction,which should be carefully *** is suggested that CFRP material with Ec close to 300 GPa and thickness no less than 3 mm,and adhesive material with Ga less than 5 GPa and 3-mm thickness can be adopted in CFRP reinforced steel *** conclusions of this paper can provide guidance for the interfacial damage control of CFRP reinforced steel beam structures.

关键词： CFRP reinforced steel beam interfacial interaction Shear stress Parametric analysis Design instruction

Engineering the cubic CeO2/g-C3N4 interfacial interaction to enhance photocatalytic H2 production

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Engineering the cubic CeO2/g-C3N4 interfacial interaction to...

interfacial-interaction-induced fabrication of biomass-derived porous carbon with enhanced intrinsic active sites

中国稀土学会2017学术年会

作者： Weixin Zou Fei Gao Lin Dong Key Laboratory of Mesoscopic Chemistry of MOE School of Chemistry and Chemical EngineeringNanjing University Jiangsu Key Laboratory of Vehicle Emissions Control Center of Modern AnalysisNanjing University

Recently,CeO/g-CN material has attracted more attention in photocatalysis1,***,the investigation on the interfacial interaction between CeO and g-CN is still *** this work,CeO nanocubes hybridized g-CN composites had been facilely synthesized to investigate the interfacial effects on photocatalytic water splitting(Fig.1).The c-CeO/g-CN composites exhibited the superior photocatalytic hydrogen evolution under visible light *** optimal c-CeO loading content was 5wt%,with the H evolution of 4300 μ mol g for 5 h illumination,higher than that of pristine CeO,g-CN and irregular CeO nanoparticles/g-CN(Fig.2).Moreover,UV-vis DRS,PL spectra and photoelectrochemical measurements demonstrated that 5wt% c-CeO/g-CN composite possessed more visible light adsorption and faster charge transfer,which was attributed to the stronger interfacial effects through the presence of the hydrogen bond and p-π hybrid between c-CeO {100} and g-CN,revealed by the FT-IR and XPS results(Fig.3-5).The work suggested that engineering the structures of the CeO and g-CN interface could be an effective strategy to obtain excellent photocatalysts.

关键词： Cubic CeO2 {100} Photocatalytic hydrogen evolution interfacial interaction

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Chinese Journal of Catalysis 2022年第8期43卷 2231-2239页

作者： Wenjuan Zhang Pei Jing Juan Du Shujie Wu Wenfu Yan Gang Liu State Key Laboratory of Inorganic Synthesis and Preparative Chemistry College of ChemistryJilin UniversityChangchun 130012JilinChina Key Laboratory of Preparation and Application of Environmental Friendly Materials Ministry of EducationJilin Normal UniversityChangchun 130103JilinChina

Carbon catalysis is an attractive metal-free catalytic transformation,and its performance is significantly dependent on the number of accessible active ***,owing to the inherent stability of the C-C linkage,only limited active sites at the edge defects of the basal plane can be obtained even after a harsh oxidation *** this study,the concept of interfacial interactions was adopted to propose an efficient strategy to develop highly active carbon *** alumina/carbon interface formed in situ acted as a cradle for the generation of oxygen-containing functional *** the absence of oxidation treatment,the concentration of oxygen-containing functional groups and the specific surface area can reach 1.27 mmol·g^(-1) and 2340 m^(2)·g^(-1),respectively,which are significantly higher than those of carbon prepared by traditional hard template *** active carbon shows a significant enhancement in catalytic performance in the oxidative coupling of amine to imine,about 22-fold higher than that of a well-known graphite oxide *** interfacial interaction strategies are based on sustainable carbon sources and can effectively tune the porous structure of carbon in the micro-and *** conceptual finding offers new opportunities for the development of high-performance carbon-based metal-free catalysts.

关键词： interfacial interaction Porous carbon Biomass Surface functionality Imines

Morphology-dependent interfacial interactions of Fe2O3 with Ag nanoparticles for determining the catalytic reduction of p-nitrophenol

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Journal of Environmental Sciences 2020年第6期32卷 1-10页

作者： Ningning Wang Shuai Zeng Hong Yuan Jin Huang Key Laboratory of Pesticide and Chemical Biology of Ministry of Education College of ChemistryCentral China Normal UniversityWuhan 430079China Chongqing Key Laboratory of Soft-Matter Material Chemistry and Function Manufacturing School of Chemistry and Chemical EngineeringSouthwest UniversityChongqing 400715China

In this work,we fabricated three kinds of Ag/Fe2O3 model catalysts with different morphologies to study the interfacial interactions between Ag and Fe2O3,and how they affected the catalytic activity in hydrogenation of p-nitrophenol was *** hydrothermal method was used to synthesize the metal oxide supported silver catalyst,with various morphologies including nanoplates(NPs),nanospheres(NSs),and nanocubes(NCs).The crystal structure,morphology and surface elements of the composite were investigated by various measurements,such as X-ray diffraction(XRD),scanning electron microscopy(SEM),transmission electron microscopy(TEM)and X-ray photoelectron spectroscopy(XPS).The catalytic activity was also evaluated by the reduction of p-nitrophenol to *** was found that the activities of the above catalysts varied with the morphology of the *** them,Ag/Fe2O3 NPs promoted the highest performance,Ag/Fe2O3 NSs were slightly inferior,and Ag/Fe2O3 NCs were the *** last,we ascribed the remarkable activity of Ag/Fe2O3 NPs to the strong metal-support interactions between Ag and Fe2O3.

关键词： Ag/Fe2O3 interfacial interaction Catalytic activity p-Nitrophenol Morphology dependence

Study of the interfacial interactions in the molybdenite floatation system

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Journal of China University of Mining and Technology 2008年第1期18卷 82-87页

作者： WANG Hui GU Guo-hua FU Jian-gang CHEN Li HAO Ye School of Chemistry and Chemical Engineering Central South University Changsha Hunan 410083 China

interfacial interactions involving Van der Waals force, hydrophobic attractive force and hydration exclusive force were investigated in this paper. The interfacial interactive free energy of a series of interfaces occurring between minerals, water, collectors and bubble was calculated. The results show that a Van der Waals attractive force and a hydrophobic attractive force exist between each mineral and water interface. The hydrophobic attractive force between molybdenite and water is markedly weaker than the hydrophobic attractive force between gangue and water. The hydrophobic attractive force between collector molecules and water is the main driving force that causes the collectors to become dispersed in the pulp. The strong hydrophobic attractive force between molybdenite and the bubble interface is the basic reason for the natural floatability of molybdenite. The Van der Waals force between molybdenite and the collectors is attractive in water solution, but it is not the cause of the main force between them. The main force that results in the collection effect is a hydrophobic attractive force caused by the Lewis acid-base interaction at the molybdenite surface. A floatation experiment shows that the adsorption intensity of the collector on the molybdenite surface is not the crucial factor for molybdenite floatation. Rather, the dispersing capability of the collector in the water phase and its selectivity for the various minerals in the floatation system are more important.

关键词： molybdenite flotation interfacial interaction contact angle surface free energy

Hydration film measurement on mica and coal surfaces using atomic force microscopy and interfacial interactions

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Journal of Central South University 2018年第6期25卷 1295-1305页

作者： XING Yao-wen GUI Xia-huiq CAO Yi-jun School of Chemical Engineering and Technology China University of Mining and TechnologyXuzhou 221116China Chinese National Engineering Research Center of Coal Preparation and Purification China University of Mining and TechnologyXuzhou 221116China ~ Central South University Press and Springer-Verlag GmbH Germanypart of Springer Nature 2018

The hydration film on particle surface plays an important role in bubble-particle adhesion in mineral flotation process. The thicknesses of the hydration films on natural hydrophobic coal and hydrophilic mica surfaces were measured directly by atomic force microscopy （AFM） based on the bending mode of the nominal constant compliance regime in AFM force curve in the present study. Surface and solid-liquid interfacial energies were calculated to explain the forming mechanism of the hydration film and atomic force microscopy data. The results show that there are significant differences in the structure and thickness of hydration films on coal and mica surfaces. Hydration film formed on mica surface with the thickness of 22.5 nm. In contrast, the bend was not detected in the nominal constant compliance regime. The van der Waals and polar interactions between both mica and coal and water molecules are characterized by an attractive effect, while the polar attractive free energy between water and mica （-87.36 mN/m） is significantly larger than that between water and coal （-32.89 mN/m）, which leads to a thicker and firmer hydration layer on the mica surface. The interfacial interaction free energy of the coal/water/bubble is greater than that of mica. The polar attractive force is large enough to overcome the repulsive van der Waals force and the low energy barrier of film rupture, achieving coal particle bubble adhesion with a total interfacial free energy of-56.30 mN/m.

关键词： hydration film atomic force microscope surface energy interfacial interaction