检索结果-内蒙古大学图书馆

MOF-derived La/ZnO–TiO2 composite with enhanced photocatalytic ability for degradation of tetracycline

Progress in Natural science:materials International 2023年第4期33卷 544-550页

作者： Lin Zhang Jun Chen Lai-Bo Song Jun-Jie Pan Qing Luo School of Physical and Healthy Education Jiangxi Science and Technology Normal University School of Chemistry and Environmental Engineering Wuhan Institute of Technology Britton Chance Center for Biomedical Photonics at Wuhan National Laboratory for Optoelectronics-Hubei Bioinformatics&Molecular Imaging Key Laboratory Department of Biomedical Engineering College of Life Science and Technology Huazhong University of Science and Technology Chemical Biology Center Lishui Institute of Agriculture and Forestry Sciences College of Materials Xiamen University

Developing effective and stable photocatalysts for organic pollutants degradation are still a big challenge in practical water treatment now. In this work, La doped ZnO–TiO2composite（La/ZnO–TiO2） were successfully fabricated by using PVP modified ZIF-8/TiO2as template via the absorption and pyrolysis routes. All as-fabricated materials were analyzed by XRD, SEM, TEM, BET, XPS, UV–vis absorption spectra and ESR spectra. PVP modified ZIF-8/TiO2was fully transferred into ZnO–TiO2after being pyrolyzed at high temperature under air *** doping of La can make ZnO–TiO2exhibiting red-shifted, which is attributed to the capture of photo-generated electrons by La, leading to the effective separation between photo-generated electrons and holes. Furthermore,the photocatalytic performance of all as-fabricated materials were explored by degradation of tetracycline（TC）solution under UV light irradiation. La/ZnO–TiO2exhibits excellent stability. And the photocatalytic degradation rate of La/ZnO–TiO2is 99.2%, which is even higher than ZnO（87.4%）, ZnO–TiO2（87.4%）, P25（TiO2）(92.7%).More than that, the effect of catalyst's dose, effect of TC concentration and effect of pH for TC degradation have been well explored. The excellent photocatalytic performance of La/ZnO–TiO2makes it possible to be applied for degradation of organic pollutants in practice.

关键词： La/ZnO–TiO2 Red-shifted Effective separation Photocatalytic performance Tetracycline

来源：评论

学校读者我要写书评

暂无评论

Contrast-enhanced fluorescence microscope by LED integrated excitation cubes

引用

Light(Advanced Manufacturing) 2023年第2期4卷 18-27页

作者： Yuanhua Liu Xiang Zhang Fei Su Zhiyong Guo Dayong Jin UTS-SUSTech Joint Research Centre for Biomedical Materials and Devices Department of Biomedical EngineeringSouthern University of Science and TechnologyShenzhenGuangdong 518055China Institute for Biomedical Materials and Devices(IBMD) Faculty of ScienceUniversity of Technology SydneyNSW 2007Australia

Fluorescence microscopy is a powerful tool for scientists to observe the microscopic world,and the fluorescence excitation light source is one of the most critical *** compensate for the short operation lifetime,integrated light sources,and low excitation efficiency of conventional light sources such as mercury,halogen,and xenon lamps,we designed an LED-integrated excitation cube(LEC)with a decentralized structure and high optical power *** a Fresnel lens,the light from the light-emitting diode(LED)was effectively focused within a 15 mm mounting distance to achieve high-efficiency *** can be easily designed in the shape of fluorescence filter cubes for installation in commercial fluorescence ***’optical efficiency is 1–2 orders of magnitude higher than that of mercury lamps;therefore,high-quality fluorescence imaging with spectral coverage from UV to red can be *** replacing conventional fluorescence filter cubes,LEC can be easily installed on any commercial fluorescence microscope.A built-in LEC driver can identify the types of LEDs in different spectral bands to adopt the optimal operating current and frequency of ***,high-contrast images can be achieved in pulse mode by time-gated imaging of long-lifetime luminescence.

关键词： LED-integrated excitation cube Filter cube Time-gated imaging Fluorescence microscopy

来源：评论

学校读者我要写书评

暂无评论

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

引用

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

Machine learning in concrete science:applications,challenges,and best practices

引用

npj Computational materials 2022年第1期8卷 1192-1208页

作者： Zhanzhao Li Jinyoung Yoon Rui Zhang Farshad Rajabipour Wil V.Srubar III Ismaila Dabo Aleksandra Radlińska Department of Civil and Environmental Engineering The Pennsylvania State UniversityUniversity ParkPA16802USA Department of Structural Engineering Research Korea Institute of Civil Engineering and Building Technology(KICT)Goyang-si10223Republic of Korea Department of Civil Environmentaland Architectural EngineeringUniversity of Colorado BoulderBoulderCO80309USA Materials Science and Engineering Program University of Colorado BoulderBoulderCO80309USA Department of Materials Science and Engineering The Pennsylvania State UniversityUniversity ParkPA16802USA

Concrete,as the most widely used construction material,is inextricably connected with human *** conceptual and methodological progress in concrete science,concrete formulation for target properties remains a challenging task due to the ever-increasing complexity of cementitious *** the ability to tackle complex tasks autonomously,machine learning(ML)has demonstrated its transformative potential in concrete *** the rapid adoption of ML for concrete mixture design,there is a need to understand methodological limitations and formulate best practices in this emerging computational ***,we review the areas in which ML has positively impacted concrete science,followed by a comprehensive discussion of the implementation,application,and interpretation of ML *** conclude by outlining future directions for the concrete community to fully exploit the capabilities of ML models.

关键词： concrete directions autonomous

来源：评论

学校读者我要写书评

暂无评论

One-step preparation of modified photothermal-driven melamine foam with gradient wettability for oil-waterseparation

引用

Frontiers of materials science 2024年第3期18卷 71-82页

作者： Mengdan Jia Mei-Chen Lin Hai-Tao Ren Bing-Chiuan Shiu Ching-Wen Lou Zhi-Ke Wang Li-Yan Liu Ting-Ting Li Innovation Platform of Intelligent and Energy-Saving Textiles School of Textile Science and EngineeringTiangongUniversityTianjin 300387China Tianjin and Ministry of Education Key Laboratory for Advanced Textile Composite Materials Tiangong UniversityTianjin 300387China Department of Biomedical Engineering College of Biomedical EngineeringChina Medical UniversityTaichung 404333China College of Material and Chemical Engineering Minjiang UniversityFuzhou 350108China Department of Bioinformatics and Medical Engineering AsiaUniversityTaichung 413305China Department of Medical Research China Medical University HospitalChina Medical UniversityTaichung 404333China Advanced Medical Care and Protection Technology Research Center College of Textile and ClothingQingdaoUniversityQingdao 266071China Department of Textile and Clothing Shandong Vocational College of Science and TechnologyWeifang 261053China

The absorption of high-viscosity oil by traditional oil absorbing materials has always been a *** there is an urgent need to solve the problem of slow absorption of high-viscosity *** this work,an emulsion composed of polydimethylsiloxane(PDMS),carbon black(CB)and waterborne polyurethane(solid content 40%)was sprayed on the melamine foam(MF).After volatilization of organic solvents,the photothermal material CB was fixed on the MF framework,making it *** raising the temperature of the modified foam to accelerate the internal thermal movement of high-viscosity oil molecules around the foam,intermolecular forces are reduced,thereby accelerating the separation *** absorption capacity of this modified MF towards organic solvents and oil is up to 79 times its own *** addition,the mechanical properties of the modified foam are improved to a certain extent,more conducive to the continuous oil-water *** photothermal absorption material provides ideas for the rapid removal of high-viscosity oil,heavy oil,etc.

关键词： photothermal high-viscosity oil oil-water separation

来源：评论

学校读者我要写书评

暂无评论

Biomimetic AgNPs@antimicrobial peptide/silk fibroin coating for infection-trigger antibacterial capability and enhanced osseointegration

引用

Bioactive materials 2023年第2期20卷 64-80页

作者： Wenhao Zhou Tian Bai Lan Wang Yan Cheng Dandan Xia Sen Yu Yufeng Zheng Shaanxi Key Laboratory of Biomedical Metallic Materials Northwest Institute for Non-ferrous Metal ResearchXi’an710016China Department of Dental Materials Peking University School and Hospital of StomatologyBeijing100081China School of Materials Science and Engineering Peking UniversityBeijing100871China

Endowing implant surfaces with combined antibacterial and osteogenic properties by drug-loaded coatings has made great strides,but how to achieve the combined excellence of infection-triggered bactericidal and in vivo-proven osteogenic activities without causing bacterial resistance still remains a formidable ***,antimicrobial peptides(AMPs)with osteogenic fragments were designed and complexed on the surface of silver nanoparticle(AgNP)through hydrogen bonding,and the collagen structure-bionic silk fibroin(SF)was applied to carry AgNPs@AMPs to achieve infection-triggered antibacterial and *** verified by TEM,AMPs contributed to the dispersion and size-regulation of AgNPs,with a particle size of about 20 nm,and a clear protein corona structure was observed on the particle *** release curve of silver ion displayed that the SF-based coating owned sensitive pH-responsive *** the antibacterial test against *** for up to 21 days,the antibacterial rate had always remained above 99%.Meanwhile,the underlying mechanism was revealed,originating from the destruction of the bacterial cell membranes and ROS *** SF-based coating was conducive to the adhesion,diffusion,and proliferation of bone marrow stem cells(BMSCs)on the surface,and promoted the expression of osteogenic genes and collagen *** in vivo implantation results showed that compared with the untreated Ti implants,SF-based coating enhanced osseointegration at week 4 and ***,the AgNPs@AMPs-loaded SF-based coating presented the ability to synergistically inhibit bacteria and promote osseointegration,possessing tremendous potential application prospects in bone defects and related-infection treatments.

关键词： Antimicrobial peptides AgNPs Antibacterial Osteointegration Titanium

来源：评论

学校读者我要写书评

暂无评论

Bio-inspired Smart Composites with Multi-scale Architecture and Surface engineering 23

Bio-inspired Smart Composites with Multi-scale Architecture ...

引用

23rd International Conference on Composite materials, ICCM 2023

作者： Zeng, Songshan Shen, Kuangyu Li, Rui Smith, Andrew Zhang, Dianyun Sun, Luyi Polymer Program Institute of Materials Science Department of Chemical & Biomolecular Engineering University of Connecticut United States

来源：评论

学校读者我要写书评

暂无评论

Ethanol-assisted synthesis of a Ni single-atom catalyst with poriferous 3D framework for efficient cascade CO_(2)electroreduction

引用

Rare Metals 2024年第9期43卷 4612-4619页

作者： Feng Wu Shi-Qi Wang Sebastian Kunze Xiao-Ping Gao Pei-Qun Yin Yu-En Wu Division of Life Sciences and Medicine Department of EndocrinologySchool of Chemistry and Materials ScienceThe First Affiliated Hospital of USTCUniversity of Science and Technology of ChinaHefei 230026China Department of Chemistry Seoul National UniversitySeoul 08826South Korea School of Biomedical Engineering Anhui Medical UniversityHefei 230032China

The electroreduction of carbon dioxide to generate multicarbon products is significant for achieving a carbon-neutral ***,the selectivity for multi-carbon products faces several challenges,such as the intricate nature of the multistep hydrogenation processes,slow reaction kinetics and the bicarbonate precipitate issue caused by alkaline *** factors hinder the extensive utilization of this ***,we successfully developed and implemented a tandem electrolyzer cascade to separate and optimize the complex elementary reactions involved in the process of multi-carbon production.

关键词： reaction. synthesis catalyst

来源：评论

学校读者我要写书评

暂无评论

Low-Temperature Methanolysis of Polycarbonate over Solid Base Sodium Aluminate

引用

Langmuir 2024年第10期40卷 5338-5347页

作者： Krisbiantoro, Philip Anggo Sato, Miyu Lin, Tzu-Ming Chang, Yu-Chia Peng, Tzu-Yun Wu, Yun-Chih Liao, Weisheng Kamiya, Yuichi Otomo, Ryoichi Wu, Kevin C.-W. Molecular Science and Technology Program Taiwan International Graduate Program Academia Sinica Taipei11529 Taiwan International Graduate Program of Molecular Science and Technology National Taiwan University Taipei10617 Taiwan Department of Chemical Engineering College of Engineering National Taiwan University Taipei10617 Taiwan Graduate School of Environmental Science Hokkaido University Nishi 5 Kita 10 Sapporo060-0810 Japan Faculty of Environmental Earth Science Hokkaido University Nishi 5 Kita 10 Sapporo060-0810 Japan Center of Atomic Initiative for New Materials National Taiwan University Taipei10617 Taiwan Department of Chemical Engineering and Materials Science Yuan Ze University Taoyuan320 Taiwan

Herein, a low-cost and readily available sodium aluminate (NaAlO2) was used as a solid base catalyst for the depolymerization of polycarbonate (PC) via methanolysis in the presence of tetrahydrofuran (THF) as a solvent. NaAlO2 was highly active for the reaction, and the performance was comparable to that of soluble strong base SrO and much higher than those of MgO and CaO. By the reaction over the catalyst, a highly pure and crystalline bisphenol A (BPA) was obtained. Among tested organic solvents, THF was the best in aiding PC methanolysis over NaAlO2 due to the polarity similar to PC according to Hansen solubility parameters (HSPs). At 60 °C, 98.1% PC conversion and 96.8% BPA yield were achieved within just 2 h. NaAlO2 was reusable without any severe catalyst deactivation in at least four runs. The mechanistic study revealed that the reaction proceeded via the methoxide pathway, with THF aiding the dissolution of PC. The reaction over NaAlO2 possessed a low apparent activation energy (Ea) of 75.1 kJ mol-1, which is the lowest ever reported so far for the reaction over solid catalysts. © 2024 The Authors. Published by American Chemical Society.

关键词： Sodium Aluminate

来源：评论

学校读者我要写书评

暂无评论

Bio-integrated scaffold facilitates large bone regeneration dominated by endochondral ossification

引用

Bioactive materials 2024年第5期35卷 208-227页

作者： Lili Sun Haoyi Niu Yuqiong Wu Shiyan Dong Xuefeng Li Betty YSKim Changsheng Liu Yifan Ma Wen Jiang Yuan Yuan Key Laboratory for Ultrafine Materials of Ministry of Education School of Materials Science and EngineeringEast China University of Science and TechnologyShanghai200237PR China Engineering Research Center for Biomedical Materials of Ministry of Education East China University of Science and TechnologyShanghai200237PR China Department of Radiation Oncology MD Anderson Cancer CenterHoustonTXUSA Department of Prosthodontics Ninth People’s HospitalShanghai Jiao Tong University School of MedicineShanghai200011PR China Department of Neurosurgery The University of Texas MD Anderson Cancer CenterHoustonTXUSA

Repair of large bone defects caused by severe trauma,non-union fractures,or tumor resection remains challenging because of limited regenerative ***,these defects heal through mixed routines,including intramembranous ossification(IMO)and endochondral ossification(ECO),with ECO considered more *** strategies to promote large bone healing via ECO are unstable and require high-dose growth factors or complex cell therapy that cause side effects and raise expense while providing only limited ***,we report a bio-integrated scaffold capable of initiating an early hypoxia microenvironment with controllable release of low-dose recombinant bone morphogenetic protein-2(rhBMP-2),aiming to induce ECO-dominated ***,we apply a mesoporous structure to accelerate iron chelation,this promoting early chondrogenesis via deferoxamine(DFO)-induced hypoxia-inducible factor-1α(HIF-1α).Through the delicate segmentation of click-crosslinked PEGylated Poly(glycerol sebacate)(PEGS)layers,we achieve programmed release of low-dose rhBMP-2,which can facilitate cartilage-to-bone transformation while reducing side effect *** demonstrate this system can strengthen the ECO healing and convert mixed or mixed or IMO-guided routes to ECO-dominated approach in large-size models with clinical ***,these findings demonstrate a biomaterial-based strategy for driving ECO-dominated healing,paving a promising pave towards its clinical use in addressing large bone defects.

关键词： Endochondral ossification Bio-integrated scaffold Hypoxia-mimicking Low-dose bone morphogenetic protein-2 Large bone repair

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：