检索结果-南通市图书馆

Nano Research 2024年第7期17卷 6654-6660页

作者： Lili Tan Zhi Chen Chengyu Xiao Zhiyong Geng Yinran Jin Chaoyang Wei Fei Teng Wenlong Fu Peng-peng Wang State Key laboratory for Mechanical Behavior of Materials Shaanxi International Research Center for Soft MatterSchool of Materials Science and EngineeringXi’an Jiaotong UniversityXi’an 710049China

Enriching the library of chiral plasmonic structures is of significant importance in advancing their applicability across diverse domains such as biosensing,nanophotonics,and ***,employing triangle nanoplates as growth seeds,we synthesized a novel class of chiral-shaped plasmonic nanostructures through a wet chemical strategy with dipeptide as chiral inducers,including chiral tri-blade boomerangs,concave rhombic dodecahedrons,and *** structural diversity in chiral plasmonic nanostructures was elucidated through their continuous morphological evolution from two-dimensional to threedimensional *** fine-tuning of chiroptical properties was achieved by precisely manipulating crucial synthetic parameters such as the amount of chiral molecules,seeds,and gold precursor that significantly influenced chiral structure *** findings provide a promising avenue for enriching chiral materials with highly sophisticated structures,facilitating a fundamental understanding of the relationship between structural nuances and chiroptical properties.

关键词： plasmonic nanostructures geometric chirality circular dichroism fine-tuning

Preparation and Conducting Behavior of Amphibious Organic/Inorganic Hybrid Proton Exchange Membranes Based on Benzyltetrazole

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chemical Research in Chinese Universities 2012年第2期28卷 345-352页

作者： QIAO Li-gen SHI Wen-fang CAS Key laboratory of soft matter Chemistry Department of Polymer Science and EngineeringUniversity of Science and Technology of ChinaHefei 230026P.R.China

A series of novel amphibious organic/inorganic hybrid proton exchange membranes with H3PO4 doped which could be used under both wet and dry conditions was prepared through a sol-gel process based on acrylated triethoxysilane（A-TES） and benzyltetrazole-modified triethoxysilane（BT-TES）.The dual-curing approach including UV-curing and thermal curing was used to obtain the crosslinked *** glycol（400） diacrylate（PEGDA） was used as an oligomer to form the polymeric *** molecular structures of precursors were characterized by 1 H,13 C and 29 Si NMR *** thermogravimetric analysis（TGA） results show that the membranes exhibit acceptable thermal stability for their application at above 200 *** differential scanning calorimeter（DSC） determination indicates that the crosslinked membranes with the mass ratios of below 1.6 of BT-TES to A-TES and the same mass of H3PO4 doped as that of A-TES possess the-T g s,and the lowest T g（-28.9 ℃） exists for the membrane with double mass of H3PO4 doped as *** high proton conductivity in a range of 9.4―17.3 mS/cm with the corresponding water uptake of 19.1%―32.8% of the membranes was detected at 90 oC under wet ***,the proton conductivity in a dry environment for the membrane with a mass ratio of 2.4 of BT-TES to A-TES and double H3PO4 loading increases from 4.89×10-2 mS/cm at 30 ℃ to 25.7 mS/cm at 140 ℃.The excellent proton transport ability under both hydrous and anhydrous conditions demonstrates a potential application in the polymer electrolyte membrane fuel cells.

关键词： Amphibious Benzyltetrazole Organic/inorganic hybrid membrane Phosphorus acid Proton conductivity

A non-antibiotic organic coating on ZA6-1 surface releasing different concentrations of sodium dodecyl sulphate/levulinic acid for orthopaedic application

在线全文

学校读者我要写书评

暂无评论

Biosurface and Biotribology 2024年第2期10卷 42-51页

作者： Feng Zou Deren Zhao Yangkai Liu Qiqi Lu Hulin Liu Zilin Chen Yaxing Fang Xiaodong Tan Yunjie Xiang Xue Feng Yongping Zhang Xi Rao School of Materials and Energy Southwest UniversityChongqingChina Chongqing Key laboratory of soft-matter Material Chemistry and Function Manufacturing Southwest UniversityChongqingChina Department of Clinical laboratory University-Town Hospital of Chongqing Medical UniversityChongqingChina

Bone implantation surgery is often accompanied by bacterial infection,resulting in infectious bone non-union,pathological fracture and other serious consequences,which will aggravate the pain of patients.A non-antibiotic coating consisting of sodium dodecyl sulphate(SDS)and levulinic acid(LA)with different concentrations was prepared by the authors on the zinc–aluminium alloy(ZA6-1)using a wet chemistry treatment for orthopaedic *** influence of SDS/LA concentrations on the surface morphology,composition and performance of the developed coating was *** results showed that as-prepared coating on a zinc alloy surface could improve the substrate's corrosion resistance and increase the degradation rate from 0.82 to 19.70μm/year upon raising the SDS/LA ***,higher hydrophilicity(100%)and morphology,as well as good cell adhesion and differentiation(ALP>95%for 7 days)were observed on coated zinc *** increased SDS/LA concentration slightly weakens the biocompatibility and enhances the antibacterial performance of coated zinc alloys due to the synergistic effect of SDS/***,the coating comprising 6 wt.%SDS and 9 wt.%LA showed excellent antibacterial action with a high level of biocompatibility,confirming its potential application for orthopaedic implants.

关键词： antibacterial biocompatibility biomaterials material property

Grinding-assisted heterogeneous nucleation of BiOAc on MoS_(2) nanoflowers to heterojunction with good visible-light photocatalytic performance

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Particuology 2021年第3期19卷 132-141页

作者： Huanzhen Liu Qiaofeng Han Xuemei Jia Zichen Shen Key laboratory for soft Chemistry and Functional Materials Ministry of EducationNanjing University of Science and TechnologyNanjing 210094China

Bismuth oxide subacetate(CH3COO(BiO);BiOAc)with a large band gap energy(Eg)was first applied as an ultraviolet-light-driven photocatalyst in our ***_(2)nanoflowers have been used to improve the visible-light photocatalytic activity of bismuth-based semiconductors with wide Eg because of their good visible-light ***,the grinding-assisted solid-state reaction method was used to prepare a MoS_(2)/BiOAc composite to improve the visible-light photoreactivity of *** compared with commonly used wet chemical and hydrothermal routes,the grinding-assisted synthesis facilitated heterogeneous nucleation,which was beneficial to achieving close contact and subsequent charge transfer and separation at the interfaces,resulting in enhanced photocatalytic activity for malachite green,methylene blue,and antibiotic tetracycline degradation under visible-light ***,the dispersion in the mixing solution of ethanol and water(v/v=1)of MoS_(2)nanosheets induced self-assembly into flower-like nanostructures,thus enhancing the photocatalytic activity of MoS_(2)/BiOAc.A possible mechanism for visible-light photocatalysis of MoS_(2)/BiOAc was proposed.

关键词： MoS_(2)/BiOAc Heterojunction Grinding Visible-light photocatalysi

Chiral inorganic nanomaterials:Harnessing chirality-dependent interactions with living entities for biomedical applications

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nano Research 2023年第8期16卷 11107-11124页

作者： Qi Gao Lili Tan Zhihao Wen Daidi Fan Junfeng Hui Peng-peng Wang Shaanxi Key laboratory of Degradable Biomedical Materials Shaanxi R&D Center of Biomaterials and Fermentation EngineeringSchool of Chemical EngineeringNorthwest UniversityXi’an 710069China State Key laboratory for Mechanical Behavior of Materials Shaanxi International Research Center for Soft MatterSchool of Materials Science and EngineeringXi’an Jiaotong UniversityXi’an 710049China

Chirality is an intriguing and fundamental property of natural matter,which is especially crucial in supporting the processes of living *** selective interactions between natural chiral compounds are widespread at all levels in living entities and play a vital role in biochemical *** cutting-edge advancements in synthetic chiral inorganic nanostructures have led to significant progress in their applications within biological *** developments have unraveled chirality-dependent interactions at the nanoscale and molecular scale,providing a better understanding of intricate process of chiral selection in biological systems and demonstrating the potential of chiral inorganic nanostructures for life science ***,we summarize recent progress in understanding the chirality origin of inorganic chiral nanoparticles and the development of wet-chemical *** also discuss the captivating interaction between chiral inorganic nanostructures and biological entities at various ***,we discuss the challenges and potential of functional chiral nanomaterials for future biomedical and bioengineering applications,offering design ideas and a forecast for their future impact.

关键词： chiral inorganic nanomaterials living system chirality-dependent interaction bioengineering application

Porous Indium Nanocrystals on Conductive Carbon Nanotube Networks for High-Performance CO_(2)-to-Formate Electrocatalytic Conversion

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Energy & Environmental Materials 2024年第4期7卷 413-421页

作者： Liangping Xiao Rusen Zhou Tianqi Zhang Xiaoxiang Wang Renwu Zhou Patrick J.Cullen Kostya(Ken)Ostrikov Department of Physics Research Institute for Biomimetics and Soft MatterFujian Provincial Key Laboratory for Soft Functional MaterialsJiujiang Research InstituteXiamen UniversityXiamen 361005China School of Chemistry and Physics QUT Centre for Materials Science and QUT Centre for a Waste-Free WorldQueensland University of Technology(QUT)Brisbane QLD 4000Australia School of Chemical and Biomolecular Engineering University of SydneySydney NSW 2006Australia

Ever-increasing emissions of anthropogenic carbon dioxide(CO_(2))cause global environmental and climate *** by biological photosynthesis,developing effective strategies NeuNlto up-cycle CO_(2)into high-value organics is *** CO_(2)reduction reaction(CO_(2)RR)is highly promising to convert CO_(2)into economically viable carbon-based chemicals or fuels under mild process ***,mesoporous indium supported on multi-walled carbon nanotubes(mp-In@MWCNTs)is synthesized via a facile wet chemical *** mp-In@MWCNTs electrocatalysts exhibit high CO_(2)RR performance in reducing CO_(2)into *** outstanding activity(current density-78.5 mA cm^(-2)),high conversion efficiency(Faradaic efficiency of formate over 90%),and persistent stability(∼30 h)for selective CO_(2)-to-formate conversion are *** outstanding CO_(2)RR process performance is attributed to the unique structures with mesoporous surfaces and a conductive network,which promote the adsorption and desorption of reactants and intermediates while improving electron *** findings provide guiding principles for synthesizing conductive metal-based electrocatalysts for high-performance CO_(2)conversion.

关键词： CO_(2)RR conductive network electrocatalysts formate

Super-Tough and Environmentally Stable Aramid Nanofiber@MXene Coaxial Fibers with Outstanding Electromagnetic Interference Shielding Efficiency

在线全文

学校读者我要写书评

暂无评论

Nano-Micro Letters 2022年第7期14卷 72-85页

作者： Liu-Xin Liu Wei Chen Hao-Bin Zhang Lvxuan Ye Zhenguo Wang Yu Zhang Peng Min Zhong-Zhen Yu State Key laboratory of Organic-Inorganic Composites College of Materials Science and EngineeringBeijing University of Chemical TechnologyBeijing 100029People’s Republic of China Beijing Key laboratory of Advanced Functional Polymer Composites Beijing University of Chemical TechnologyBeijing 100029People’s Republic of China Beijing Advanced Innovation Center for soft matter Science and Engineering Beijing University of Chemical TechnologyBeijing 100029People’s Republic of China

Although electrically conductive and hydrophilic MXene sheets are promising for multifunctional fibers and electronic textiles,it is still a challenge to simultaneously enhance both conductivity and mechanical properties of MXene fibers because of the high rigidity of MXene sheets and insufficient inter-sheet ***,we demonstrate a core-shell wet-spinning methodology for fabricating highly conductive,super-tough,ultra-strong,and environmentally stable Ti_(3)C_(2)T_(x) MXene-based core-shell fibers with conductive MXene cores and tough aramid nanofiber(ANF)*** highly orientated and low-defect structure endows the ANF@MXene core-shell fiber with supertoughness of~48.1 MJ m^(-3),high strength of~502.9 MPa,and high conductivity of~3.0×10^(5)S m^(-1).The super-tough and conductive ANF@MXene fibers can be woven into textiles,exhibiting an excellent electromagnetic interference(EMI)shielding efficiency of 83.4 dB at a small thickness of 213μ***,the protection of the ANF shells provides the fibers with satisfactory cyclic stability under dynamic stretching and bending,and excellent resistance to acid,alkali,seawater,cryogenic and high temperatures,and *** oxidation resistance of the fibers is demonstrated by their wellmaintained EMI shielding *** multifunctional core-shell fibers would be highly promising in the fields of EMI shielding textiles,wearable electronics and aerospace.

关键词： Core-shell fibers MXene sheets Electromagnetic interference shielding Aramid nanofibers Super-toughness

Analysis of solid-liquid-gas interactions in landfilled municipal solid waste by a bio-hydro-mechanical coupled model

在线全文

学校读者我要写书评

暂无评论

Science China(Technological Sciences) 2012年第1期55卷 81-89页

作者： CHEN YunMin XU XiaoBing ZHAN LiangTong MOE Key laboratory of soft Soils and Geoenvironmental Engineering Zhejiang University Hangzhou 310058 China Tian Hua Architecture Planning Engineering Limited Shanghai 200233 China

Based on first-order kinetics of hydrolysis process, biodegradation of municipal solid waste （MSW） is assumed to obey a first-order decay equation which can take the direct effect of water content on biodegradation into account. Hydraulic model is an unsaturated-saturated flow model using mass conservation equations for fluids. Mechanical compression of MSW is ex- pressed by a stress-age coupled compression model. Through above models, a one-dimensional （I-D） bio-hydro-mechanical coupled model is established to analyze solid-liquid-gas interactions in landfilled MSW. Values of all the model parameters for current typical Chinese MSW are determined. Numerical analysis of a hypothetical waste sample in a closed system shows that gas pressure and gas concentration is extremely large which might cause severe gas explosion problem. Total gas production is about 267.0 m3 per wet ton of fresh wastes. For another hypothetical landfilled MSW layer, the coupled model predicts a dis- sipation of gas pressure during passive gas collection process. Annual gas production is large at the beginning of biodegradation, and then decreases with time. Surface settlement of the wastes increases quickly initially and then becomes stable with a compression strain of about 0.32 after 20 years.

关键词： municipal solid waste solid-liquid-gas interaction gas generation settlement

Aggregated structures and their functionalities in hydrogels

在线全文

学校读者我要写书评

暂无评论

Aggregate

Aggregate 2021年第2期2卷 16-27页

作者： Kunpeng Cui Jian Ping Gong Institute for Chemical Reaction Design and Discovery(WPI-ICReDD) Hokkaido UniversitySapporoJapan soft matter GI-CoRE Hokkaido UniversitySapporoJapan Faculty of Advanced Life Science Hokkaido UniversitySapporoJapan

Biological soft tissues and hydrogels belong to the same category of soft and wet *** of them are composed of polymer network and a certain amount of water,and permeable to small *** tissues possess elaborated structures and exhibit outstanding *** the other hand,hydrogels are usually amorphous with poor *** recent years,various hydrogels with robust functionalities have been developed by introducing aggregated structures into the gel networks,widely extend their applications in diverse fields,such as soft actuators,biological sensors,and structural *** strategies are usually used to fabricate aggregated structure into hydrogels,including molecular self-assembling,microphase separation,crystallization,and inorganic *** aggregated structures entail the gel very different functionalities.A simple aggregated structure is able to bring multiple functionalities and a combination of mechanical performances of the *** this review,we describe the strategies used to construct aggerated structure in hydrogels and discuss about the close relation between the aggregated structure and *** also highlight the role of nonequilibrium aggregated structure in fabricating hydrogels with dynamic memorizing-forgetting behavior and point out the remaining challenges.

关键词： aggregated structure functionality hydrogel