检索结果-内蒙古大学图书馆

Ultra-transparent nanostructured coatings via flow-induced one-step coassembly

Nano Materials Science 2022年第2期4卷 97-103页

作者： Jingjing Liu Sonia E.Chavez Hao Ding Maria M.Farooqui Zaili Hou Sharon Lin Thomas D.D'Auria Julia M.Kennedy Anna Marie LaChance Luyi Sun Polymer Program Institute of Materials ScienceUniversity of ConnecticutStorrsConnecticut06269United States Department of Chemical&Biomolecular Engineering University of ConnecticutStorrsConnecticut06269United States Department of Biomedical Engineering University of ConnecticutStorrsConnecticut06269United States

Polyvinyl alcohol(PVA)/laponite(LP)nanocomposite coatings were fabricated via a facile one-step coassembly *** formed nanocoatings contain a high concentration of LP nanosheets,which can be well aligned along the substrate surface during the coassembly *** to the highly orientated structure,the flexible nanocoatings exhibit ultra-high transparency and superior mechanical properties,and can also act as excellent gas *** nanocoatings can be exceptional candidates for a variety of applications,such as food packaging.

关键词： Nanocoating Coassembly Polyvinyl alcohol Laponite

来源：评论

学校读者我要写书评

暂无评论

MXene:From synthesis to environment remediation

引用

Chinese Journal of chemical engineering 2023年第9期61卷 260-280页

作者： Ali Nikkhah Hasan Nikkhah Hadis langari Alireza Nouri Abdul Wahab Mohammad Ang Wei Lun Ng law Yong Rosiah Rohani Ebrahim Mahmoudi Department of Chemical and Process Engineering Faculty of Engineering and Built EnvironmentUniversiti Kebangsaan MalaysiaBangi 43600Malaysia Department of Mechanical and Aerospace Engineering University at BuffaloBuffaloUSA Department of Chemical and Biomolecular Engineering University of ConnecticutStorrsUSA Department of Chemistry and Medicinal Chemistry University at BuffaloBuffaloUSA Chemical and Water Desalination Engineering Program College of EngineeringUniversity of SharjahSharjah 27272United Arab Emirates Lee Kong Chian Faculty of Engineering and Science Universiti Tunku Abdul RahmanJalan Sungai LongBandar Sungai LongKajangSelangorMalaysia

A new burgeoning family of two-dimensional(2D)transition metal carbides/nitrides,better known as MXenes,have received extensive attention because of their distinct properties,such as metallic conductivity,good hydrophilicity,large surface area,good mechanical stability,and *** 40 different MXenes have been synthesized,and dozens more structures and properties have been theoretically ***,the recent progress in MXenes development is not well covered in chronological order based on different *** review article focuses on emerging synthesis methods,the properties of MXenes,and mainly the applications of MXenes and MXene-based material family in environmental remediation,a comprehensive review of gaseous and aqueous pollutants treatment.

关键词： MXene 2D materials Wastewater treatment CO_(2)capture Adsorption Photodegradation

来源：评论

学校读者我要写书评

暂无评论

Block Sequence Effects on the Self-Assembly Behaviors of Polypeptide-Based Penta-Block Copolymer Hydrogels

引用

ACS Applied Materials and Interfaces 2024年第5期16卷 6674-6686页

作者： Wang, Ke-Hsin Liu, Chung-Hao Tan, Dun-Heng Nieh, Mu-Ping Su, Wei-Fang Department of Materials Science and Engineering National Taiwan University No. 1 Sec. 4 Roosevelt Road Taipei10617 Taiwan Polymer program Institute of Materials Science University of Connecticut 25 King Hill Road Unit 3136 StorrsCT06269-3136 United States Department of Chemical and Biomolecular Engineering University of Connecticut StorrsCT06269 United States Department of Materials Engineering Ming-Chi University of Technology 84 Gungjuan Rd. New Taipei City243303 Taiwan

Peptide-based hydrogels have great potential for applications in tissue engineering, drug delivery, and so on. We systematically synthesize, characterize, and investigate the self-assembly behaviors of a series of polypeptide-based penta-block copolymers by varying block sequences and lengths. The copolymers contain hydrophobic blocks of poly(γ-benzyl-l-glutamate) (PBG, Bx) and two kinds of hydrophilic blocks, poly(l-lysine) (PLL, Ky) and poly(ethylene glycol) (PEG, EG34), where x and y are the number of repeating units of each block, where PBG and PLL blocks have unique functions for nerve regeneration and cell adhesion. It shows that a sufficient length of the middle hydrophilic segment capped with hydrophobic end PBG blocks is required. They first self-assemble into flower-like micelles and sequentially form transparent hydrogels (as low as 2.3 wt %) with increased polymer concentration. The hydrogels contain a microscale porous structure, a desired property for tissue engineering to facilitate the access of nutrient flow for cell growth and drug delivery systems with high efficiency of drug storage. We hypothesize that the structure of Bx-Ky-EG34-Ky-Bx agglomerates is beyond micron size (transparent), while that of Ky-Bx-EG34-Bx-Ky is on the submicron scale (opaque). We establish a working strategy to synthesize a polypeptide-based block copolymer with a wide window of sol-gel transition. The study offers insight into rational polypeptide hydrogel design with specific morphology, exploring the novel materials as potential candidates for neural tissue engineering. © 2024 The Authors. Published by American chemical Society

关键词： Block copolymers

来源：评论

学校读者我要写书评

暂无评论

A breathing A4 paper by in situ growth of green metal-organic frameworks for air freshening and cleaning

引用

Chinese Journal of chemical engineering 2022年第12期52卷 95-102页

作者： Bo Zhang Hongwen Chen Liming Jiang Youqing Shen Dan Zhao Zhuxian Zhou Key Laboratory of Biomass Chemical Engineering of Ministry of Education and Zhejiang Key Laboratory of Smart Biomaterials College of Chemical and Biological EngineeringZhejiang UniversityHangzhou 310027China Department of Polymer Science and Engineering Zhejiang UniversityHangzhou 310027China Department of Chemical&Biomolecular Engineering National University of Singapore117585Singapore Hangzhou Global Scientific and Technological Innovation Center Zhejiang UniversityHangzhou 311215China

Surface modification of natural cellulose fibers with nanomaterials is an effective strategy for producing functional textiles for multiple applications.A4-sized printing paper is a commonly used,cheap,and easily acquirable office supply which is mainly made of cellulose ***,we report green and simple nanofabrication of A4 paper to endow it with high capability for fragrance encapsulation and sustained release,and strong adsorption to indoor air *** method utilizes the sugar molecule of cellulose for in-situ growth ofγ-cyclodextrin(γ-CD)metal-organic frameworks(MOFs)on A4 *** obtainedγ-CD-MOF/A4 nanocomposites have superior specific surface area and high porous ***γ-CD-MOF/A4 nanocomposites can effectively encapsulate fragrant molecules through host-guest ***γ-CD-MOF/A4 nanocomposites also show strong absorption capability to formaldehyde and carbon dioxide through the formation of hydrogen bonding and chemical ***γ-CD-MOF/A4nanocomposites combine the advantages of both A4 paper andγ-CD-MOF,which can be used in indoor air freshening and cleaning.

关键词： Metal-organic frameworks A4 printing paper In situ synthesis Fragrance encapsulation Formaldehyde removal Carbon dioxide capture

来源：评论

学校读者我要写书评

暂无评论

Scaled-up synthesis of defect-rich layered double hydroxide monolayers without organic species for efficient oxygen evolution reaction

引用

Green Energy & Environment 2022年第5期7卷 975-982页

作者： Haoyuan Chi Jingwen Dong Tian Li Sha Bai Ling Tan Jikang Wang Tianyang Shen Guihao Liu Lihong Liu Luyi Sun Yufei Zhao Yu-Fei Song State Key Laboratory of Chemical Resource Engineering Beijing University of Chemical TechnologyBeijing100029China College of Chemistry Key Laboratory of Theoretical&Computational Photochemistry of Ministry of EducationBeijing Normal UniversityBeijing100875China Polymer Program Institute of Materials Science and Department of Chemical&Biomolecular EngineeringUniversity of ConnecticutStorrsConnecticut06269USA Beijing Advanced Innovation Center for Soft Matter Science and Engineering Beijing University of Chemical TechnologyBeijing100029China

The scaled-up synthesis of organic-free monolayer nanomaterials is highly desirable,especially in obtaining green energy by *** this study,a method for the scaled-up synthesis of the series of monolayer layered double hydroxides(LDHs)without the addition of organic solvents is reported via the separate nucleation and aging steps *** resulting monolayer LDHs with the thicknesses of less than 1 nm showed a narrow thickness distribution.X-ray absorption fine-structure revealed that monolayer NiFe-LDH nanosheets have a number of oxygen and metal vacancies *** a practical application,monolayer NiFe-LDH nanosheets containing defects showed an enhanced electrocatalytic water oxidation activity compared with that of bulk *** functional theory calculations uncovered that excellent catalytic activity is attributed to vacancies *** proposed method is an economical and universally applicable strategy for the scaled-up production of monolayer LDHs.

关键词： process synthesis monolayer

来源：评论

学校读者我要写书评

暂无评论

Smart Soft Materials with Multiscale Architecture and Dynamic Surface Topographies

引用

Accounts of Materials Research 2022年第11期3卷 1115-1126页

作者： Songshan Zeng Andrew T.Smith Kuangyu Shen Luyi Sun Polymer Program Institute of Materials Science and Department of Chemical&Biomolecular EngineeringUniversity of ConnecticutStorrsConnecticut 06269United StatesPresent Address:Macao Institute of Materials Science and Engineering(MIMSE)Zhuhai MUST Science and Technology Research InstituteFaculty of Innovation EngineeringMacao University of Science and TechnologyTaipa999078MacaoChina Polymer Program Institute of Materials Science and Department of Chemical&Biomolecular EngineeringUniversity of ConnecticutStorrsConnecticut 06269United States

CONSPECTUS:Smart soft materials have one or more characteristics that can be significantly altered in convertible fashions by external stimuli,such as light,moisture,mechanical force,temperature,electric/magnetic fields,pH,and so *** materials can lead to widespread application in multifunctional smart ***,various smart soft materials have been developed under the inspiration of the intriguing multiscale structures,adaptive mechanisms,and dynamic responses of natural life,with an aim to further design advanced material systems with novel,intriguing,and unprecedented properties.

关键词： Smart properties. Dynamic

来源：评论

学校读者我要写书评

暂无评论

Micro-computed tomography utility for estimation of intraparenchymal spinal cord cystic lesions in small animals

引用

Neural Regeneration Research 2021年第11期16卷 2293-2298页

作者： Mahmoud Farrag Dipak D.Pukale Nic D.Leipzig Integrated Bioscience Program The University of AkronAkronOHUSA Department of Chemical Biomolecularand Corrosion EngineeringThe University of AkronAkronOHUSA Department of Chemical Biomolecularand Corrosion EngineeringIntegrated Bioscience ProgramThe University of AkronAkronOHUSA

Precise assessment of spinal cord cystic lesions is crucial to formulate effective therapeutic strategies,yet histological assessment of the lesion remains the primary method despite numerous studies showing inconsistent results regarding estimation of lesion size via *** the other hand,despite numerous advances in micro-computed tomography(micro-CT)imaging and analysis that have allowed precise measurements of lesion size,there is not enough published data on its application to estimate intraspinal lesion size in laboratory animal *** work attempts to show that micro-CT can be valuable for spinal cord injury research by demonstrating accurate estimation of syrinx size and compares between micro-CT and traditional histological *** used a post-traumatic syringomyelia rat model to compare micro-CT analysis to conventional histological *** study showed that micro-CT can detect lesions within the spinal cord very similar to ***,micro-CT appears to provide more accurate estimates of the lesions with more measures(e.g.,surface area),can detect compounds within the cord,and can be done with the tissue of interest(spinal cord)*** summary,the experimental work presented here provides one of the first investigations of the use of micro-CT for estimating the size of intraparenchymal cysts and detecting materials within the spinal *** animal procedures were approved by the University of Akron Institutional Animal Care and Use Committee(IACUC)(protocol#LRE 16-05-09 approved on May 14,2016).

关键词： cyst size histology intraparenchymal cysts lesion size estimate micro-CT post-traumatic syringomyelia spinal cord imaging spinal cord injury spinal cystic lesion syrinx

来源：评论

学校读者我要写书评

暂无评论

Fluorine-rich poly(arylene amine) membranes for the separation of liquid aliphatic compounds

引用

Science (New York, N.Y.) 2025年第6730期387卷 208-214页

作者： Ren, Yi Ma, Hui Kim, Jinsu Al Otmi, Mohammed Lin, Ping Dai, Changhui Lee, Young Joo Zhai, Zihan Jang, Woo Jin Yang, Shijie Sarswat, Akriti Feliachi, Yacine Sampath, Janani Realff, Matthew J. Lively, Ryan P. Guo, Sheng School of Chemical and Biomolecular Engineering Georgia Institute of Technology Atlanta GA United States State Key Laboratory of Coordination Chemistry MOE Key Laboratory of High-Performance Polymer Materials & Technology School of Chemistry and Chemical Engineering Nanjing University Nanjing China Department of Petrochemical Materials Chonnam National University South Korea Department of Chemical Engineering University of Florida Gainesville FL United States Department of Chemistry University of Florida Gainesville FL United States

We explored the potential for membrane materials to reduce energy and carbon requirements for the separation of aliphatic hydrocarbon feedstocks and products. We developed a series of fluorine-rich poly(arylene amine) polymer membranes that feature rigid polymer backbones with segregated perfluoroalkyl side chains. This combination imbues the polymers with resistance to dilation induced by hydrocarbon immersion without the loss of solution-based membrane fabrication techniques. These materials exhibit good separation of liquid-phase alkane isomers at ambient temperatures. The integration of these polymeric membranes into fuel and chemical feedstock separation processes was investigated in a series of experiments. Technoeconomic analyses based on these experiments indicate that the best-performing membrane materials can substantially reduce the energy costs and associated carbon emissions of hydrocarbon separations (two to 10 times, depending on product specifications).

关键词：

来源：评论

学校读者我要写书评

暂无评论

Recent progress in the all-solid-state flexible supercapacitors

引用

SmartMat 2022年第3期3卷 349-383页

作者： Yongrui Yang Tao Zhu Lening Shen Yanghe Liu Dong Zhang Bowen Zheng Keven Gong Jie Zheng Xiong Gong School of Polymer Science and Polymer Engineering The University of AkronAkronOhioUSA Department of Chemical Biomolecular and Corrosion EngineeringThe University of AkronAkronOhioUSA Copley High School CopleyOhioUSA Western Reserve Academy HudsonOhioUSA

In the past few years,supercapacitors(SCs)have attracted great attention in both academic and industrial sectors due to their high energy storage efficiency,reliable stability,and eco-friendly *** solid-state SCs as one of the ongoing focuses for the development of wearable and portable electronics have become the most promising energy storage devices for the smart power system due to their high power density,fast electrochemical response,high efficiency on the charge-discharge process,and excellent electrochemical *** this study,the recent progress in the electrodes and electrolytes used for approaching high-performance of the all-solid-state flexible SCs is *** first introduce basic operational principles of various *** then we overview the electrode materials including carbon materials,conducting polymers,transition metal oxides/chalcogenides/nitrides,MXenes,metal-organic frameworks,covalent-organic frameworks,and the polymer-based solid-state electrolytes in different ***,we summarize recent progress in the development of the all-solid-state flexible SCs and outlook for future research directions.

关键词： electrode materials electrolyte materials flexible supercapacitors solid-state supercapacitors

来源：评论

学校读者我要写书评

暂无评论

Optimization of photocatalytic ceramic membrane filtration by response surface methodology: Effects of hydrodynamic conditions on organic fouling and removal efficiency

引用

Chemosphere 2024年 356卷 141885页

作者： Jang, Hoseok Lee, Chang Soo Kim, Jong Hak Kim, Jeonghwan Department of Environmental Engineering Program of Environmental and Polymer Engineering Inha University Michuholgu Incheon22212 Korea Republic of Department of Chemical Engineering Pukyong National University Busan48513 Korea Republic of Department of Chemical and Biomolecular Engineering Yonsei University Seoul03722 Korea Republic of

The effects of the operating conditions, including the applied pressure, feed organic concentration, and recirculation flowrate along the TiO2-coated ceramic membrane, on the normalized membrane permeability and organic removal efficiency were systematically investigated by operating a photocatalytic membrane reactor (PMR). Response surface methodology (RSM) was conducted to better understand the interactive effect of operational conditions as well as their individual and combined effects to control membrane performance. Our results showed that the applied pressure and feed organic concentration, as single parameter, affected the normalized membrane permeability and organic removal efficiency more dominantly than the recirculation flowrate. The polynomial performance equations generated by RSM successfully predicted the membrane performance of the PMR. The responses to the normalized membrane permeability and organic removal efficiency with respect to the operational conditions were less sensitive to any combination of operational conditions than to their individual impacts. The combined effects of the operating conditions were less pronounced in promoting the catalytic performance of organic contaminants on the TiO2 surface. Our RSM analysis based on experimental observations designed by Box–Behnken Design (BBD) suggested that 1.3 bar of applied pressure, 44 mg/L of feed organic dye concentration and 0.8 L/min as recirculation flowrate as optimum conditions achieved more than 98% of organic removal efficiency and less than 5% of decline in normalized membrane permeability. This research shows that the RSM provides effective tool to optimize operational conditions to determine fouling rate and organic removal in PMR. © 2024 Elsevier Ltd

关键词： Titanium dioxide

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：