检索结果-南通市图书馆

Advanced polymer-based electrolytes in zinc-air batteries

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

eScience 2022年第5期2卷 453-466页

作者： Qingqing Liu Ruiting Liu Chaohui He chenfeng xia Wei Guo Zheng-Long Xu Bao Yu xia Key Laboratory of Material Chemistry for Energy Conversion and Storage(Ministry of Education) Hubei Key Laboratory of Material Chemistry and Service FailureSchool of Chemistry and Chemical EngineeringHuazhong University of Science and Technology(HUST)1037 Luoyu RdWuhan430074PR China State Key Laboratory of Ultraprecision Machining Technology Department of Industrial and Systems EngineeringThe Hong Kong Polytechnic UniversityHong Kong SARPR China

Zinc–air batteries(ZABs)are expected to be some of the most promising power sources for wearable and portable electronic devices and have received widespread research interest.As an ion conductor connecting anodes and cathodes,the electrolyte is critical for the overall performance of ZABs(e.g.,energy density,rechargeability,and operating voltage).Compared with liquid electrolytes,polymer-based electrolytes have superior characteristics for ZABs,such as negligible electrolyte leakage,three-phase interface stabilization,and dendrite suppression.In this perspective,we focus on recent progress in polymer-based electrolytes for ZABs.After a brief introduction to ZABs and electrolytes,we emphasize the development of polymer-based electrolytes in terms of their intrinsic properties and interfacial chemistry.Finally,challenges and viable strategies are proposed for polymer-based electrolytes in ZABs.We hope that this work will provide useful guidance to spur the development of high-performance ZABs based on advanced polymer-based electrolytes.

关键词： Zinc–air batteries Electrolytes Interface Polymers Gels

Recent Advances on MOF Derivatives for Non-Noble Metal Oxygen Electrocatalysts in Zinc-Air Batteries

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-Micro Letters 2021年第9期13卷 164-192页

作者： Yuting Zhu Kaihang Yue chenfeng xia Shahid Zaman Huan Yang xianying Wang Ya Yan Bao Yu xia School of Materials Science&Engineering University of Shanghai for Science and Technology516 Jungong RoadShanghai 200093People’s Republic of China Key Laboratory of Material Chemistry for Energy Conversion and Storage(Ministry of Education) Hubei Key Laboratory of Material Chemistry and Service FailureWuhan National Laboratory for OptoelectronicsSchool of Chemistry and Chemical EngineeringHuazhong University of Science and Technology(HUST)1037 Luoyu RoadWuhan 430074People’s Republic of China CAS Key Laboratory of Materials for Energy Conversion Shanghai Institute of CeramicsChinese Academy of Sciences(SICCAS)Shanghai 200050People’s Republic of China

Oxygen electrocatalysts are of great importance for the air electrode in zinc-air batteries(ZABs).Owing to the high specific surface area,controllable pore size and unsaturated metal active sites,metal-organic frameworks(MOFs)derivatives have been widely studied as oxygen electrocatalysts in ZABs.To date,many strategies have been developed to generate efficient oxygen electrocatalysts from MOFs for improving the performance of ZABs.In this review,the latest progress of the MOF-derived non-noble metal-oxygen electrocatalysts in ZABs is reviewed.The performance of these MOF-derived catalysts toward oxygen reduction,and oxygen evolution reactions is discussed based on the categories of metal-free carbon materials,single-atom catalysts,metal cluster/carbon composites and metal compound/carbon composites.Moreover,we provide a comprehensive overview on the design strategies of various MOF-derived non-noble metal-oxygen electrocatalysts and their structure-performance relationship.Finally,the challenges and perspectives are provided for further advancing the MOF-derived oxygen electrocatalysts in ZABs.

关键词： Metal-organic framework Non-noble metal Oxygen electrocatalysts Air electrode Zinc-air batteries

一维铂基纳米结构氧还原电催化剂的设计与合成

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Catalysis 2022年第6期43卷 1459-1472页

作者：牛慧婷夏琛沣黄磊 Shahid Zaman Thandavarayan Maiyalagan 郭巍游波夏宝玉华中科技大学化学与化工学院能量转换与存储材料化学教育部重点实验室材料化学与服役失效湖北省重点实验室生物医用与防护材料湖北省工程研究中心武汉光电国家研究中心中国湖北武汉430074 印度SRM科学技术学院化学系电化学能源实验室印度卡坦库拉图尔

燃料电池因其转换效率高和环境友好而引起了人们的广泛关注.然而,缓慢的阴极氧还原反应(ORR)动力学严重限制了燃料电池的性能.铂基材料是非常有前景的ORR催化剂,但是铂储量稀少和价格昂贵阻碍了其在燃料电池领域的应用.因此,设计和开发... 详细信息

燃料电池因其转换效率高和环境友好而引起了人们的广泛关注.然而,缓慢的阴极氧还原反应(ORR)动力学严重限制了燃料电池的性能.铂基材料是非常有前景的ORR催化剂,但是铂储量稀少和价格昂贵阻碍了其在燃料电池领域的应用.因此,设计和开发新型纳米结构催化剂,降低铂用量和提高铂利用率是非常必要的.一维铂基纳米结构因其高比表面积、高导电率和优异的抗腐蚀性,在ORR催化中表现出巨大的应用潜力.本文综述了一维铂基催化剂的合成、设计和优化策略以及在ORR应用方面的最新进展.简单介绍了ORR的反应机理和一维材料的结构优势,从合成策略上详细讨论了模板法和无模板法两个合成路径,并强调了外部形貌(纳米棒、纳米线和纳米管)及内部组成(无序合金和金属间化合物)的优化,以及一维铂基纳米材料的多维组装结构.在合成方面,可通过调节模板、表面活性剂、封装剂和结构导向剂等控制生长过程获得更多样的一维结构及其多维组装结构.相对于模板法,无模板法在制备工艺上更加简单.此外,不同的一维结构可通过改善电化学活性表面积及其原子利用率显著提升ORR催化性能.同时,可通过几何效应、应变效应及其协同效应调节铂的电子结构,进而提高催化性能.在化学组成上,过渡金属的引入不仅可以降低铂的用量并提高铂的利用率,还可以调节铂的d带中心,增强催化活性.与无序合金相比,金属间化合物由于增强的Pt(5d)-M(3d)相互作用同样展现出优异的催化性能.物理结构和化学结构的综合调控可极大地改善一维铂基结构的电催化性能.本文还就一维铂基材料的合成创新、结构设计、物理表征和理论研究等提出了展望,指出了一维铂基催化剂的应用潜力,为燃料电池ORR催化剂的发展和实际应用指明了方向.

关键词：燃料电池氧还原反应电催化剂铂合金一维结构

在线全文

学校读者我要写书评

暂无评论

盾构渣土资源化处理与多元化应用

广东土木与建筑 2024年第3期31卷 14-17,33页

作者：林珊夏星宇阮艳妹程从密宋辰峰广州地铁设计研究院股份有限公司广州510010 广州大学广州510006

我国盾构施工技术应用广泛,而盾构渣土作为一种建筑垃圾,也亟待进行资源化处理和多元化应用。参照国内外的划分标准,对盾构渣土做出了恰当合理的分类,又介绍了盾构渣土的理化性能。考虑到盾构施工技术未来发展的前景,对盾构渣土的预处... 详细信息

我国盾构施工技术应用广泛,而盾构渣土作为一种建筑垃圾,也亟待进行资源化处理和多元化应用。参照国内外的划分标准,对盾构渣土做出了恰当合理的分类,又介绍了盾构渣土的理化性能。考虑到盾构施工技术未来发展的前景,对盾构渣土的预处理技术也进行了整理,包括渣土分选技术、土性改良技术、脱水技术和除铁技术等。文章重点介绍盾构渣土的综合利用途径。当渣土掺量是水泥的15%时,C30混凝土的抗渗性能达到最优。当渣土掺量是水泥的7.5%时,C50混凝土的抗压强度达到最高。此外,盾构渣土在制作人造板材、烧结砖、免烧砖、陶粒、陶瓷等方面均有不俗表现。

关键词：盾构渣土资源化处理多元化应用理化性能

Preparation of Kenaf Biochar and Its Adsorption Properties for Methylene Blue

在线全文

学校读者我要写书评

暂无评论

Journal of Renewable Materials 2022年第12期10卷 3391-3404页

作者： Xin Wan Zhigang xia xiaoli Yang chenfeng Zhou Yuanming Zhang Haoxi Ben Guangting Han Wei Jiang College of Textiles Qingdao UniversityQingdao260000 China State Key Laboratory of Bio Fibers and Eco-Textiles Qingdao UniversityQingdao266071China State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile UniversityWuhan430000China Key Laboratory of Textile Fiber and Products(Wuhan Textile University) Ministry of EducationWuhan430200China

The toxic dyestuff's from printing and dyeing wastewater have caused serious damages to the ecological environ-ment,thus exploring effective methods to remove them having become a key topic.Here,a series of biochar sam-ples were synthesized form kenaf to adsorb methylene blue(MB),which was acted as the dye representative for the test of adsorption capacity due to the presence of abundant double bond and aroma tic heterocyclic ring.By tuning the raw materials and pyrolysis temperature,a super adsorption capacity about 164.21 mg·g^(-1) was obtained over the biochar that pyrolyzed at 700℃ with the kenaf fiber as raw material Through the physical adsorption,elemental analysis,FTIR spectra and NH_(3)-TPD,it was found the high surface area and pore volume of biochar played a key role in the adsorption of MB,and the acidic sites would also assist the adsorption process.Besides,the adsorption kinetic model was ftted and calculated,implying the MB physically adsorbed on the bio-char rapidly and then occurred chemical adsorption on the acidic sites.In addition,through KBC700 recycling experiments,it was found that kenaf biochar had a good binding force to MB,which effectively avoided secondary pollution.This work provides important insights for the adsorption mechanism of MB by biochar,also offers some guidance for the further synthesis of biochar from various biomass.

关键词： Kenaf biochar pyrolysis temperature adsorption methylene blue kinetic analysis

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

氯取代Neo-混杂卟啉的理论研究

山东化工 2022年第6期51卷 24-27页

作者：江晨凤韦瑶瑶李云志周广丽刘国魁冷霞夏其英临沂大学化学化工学院山东临沂276000

卟啉类化合物是一类重要的天然杂环大分子化合物,在生物体内在光合作用、氧的运输和储存以及电子转移功能等方面起重要作用。它们被广泛应用于材料科学、催化和医学领域,而且易于与金属结合形成有机金属衍生物。由于其光电特性,卟啉类... 详细信息

卟啉类化合物是一类重要的天然杂环大分子化合物,在生物体内在光合作用、氧的运输和储存以及电子转移功能等方面起重要作用。它们被广泛应用于材料科学、催化和医学领域,而且易于与金属结合形成有机金属衍生物。由于其光电特性,卟啉类化合物有望成为新型染料和光敏材料。本文采用密度泛函理论(DFT)和含时密度泛函理论(TDDFT)研究Neo-混杂卟啉及其三种异位氯取代Neo-混杂卟啉的分子结构和轨道分布和电子吸收光谱。

关键词： Neo-混杂卟啉氯取代Neo-混杂卟啉含时密度泛函轨道分布吸收光谱

在线全文

学校读者我要写书评

暂无评论

轧辊表面激光处理技术的研究进展

材料导报 2010年第3期24卷 6-10页

作者：臧辰峰刘常升张小彬赵鹏飞夏颖东北大学材料各向异性与织构工程教育部重点实验室沈阳110004 重庆理工大学材料学院重庆400050

轧辊是轧机的主要变形部件。总结了轧辊材质、主要工作形式及失效方式和轧辊表面处理技术应用概况,具体从激光淬火与重熔技术、激光合金化和激光熔覆3个方面介绍了轧辊激光表面处理(修复)技术的研究和应用现状,并展望了激光表面处理技... 详细信息

轧辊是轧机的主要变形部件。总结了轧辊材质、主要工作形式及失效方式和轧辊表面处理技术应用概况,具体从激光淬火与重熔技术、激光合金化和激光熔覆3个方面介绍了轧辊激光表面处理(修复)技术的研究和应用现状,并展望了激光表面处理技术修复表面失效轧辊的发展前景。

关键词：轧辊表面处理激光合金化激光熔覆

Preparation of Kenaf Biochar and Its Adsorption Properties for Methylene Blue

在线全文

学校读者我要写书评

暂无评论

Journal of Renewable Materials 2023年第3期11卷 1352-1352页

作者： Wan, Xin xia, Zhigang Yang, xiaoli Zhou, Chengfeng Zhang, Yuanming Ben, Haoxi Han, Guangting Jiang, Wei Qingdao Univ Coll Text Qingdao 266000 Peoples R China Qingdao Univ State Key Lab Biofibers & Ecotext Qingdao 266071 Peoples R China Wuhan Text Univ State Key Lab New Text Mat & Adv Proc Technol Wuhan 430000 Peoples R China Wuhan Text Univ Minist Educ Key Lab Text Fiber & Prod Wuhan 430200 Peoples R China

The fourth author’s name in the original paper was incorrectly spelled as“chenfeng Zhou”.The corrected spelling of the fourth author’s name is“Chengfeng Zhou”.The authors apologize for this error,which has now b... 详细信息

关键词： corrected Adsorption error

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

小反刍兽疫核酸疫苗的制备及免疫效果评估

黑龙江畜牧兽医 2021年第24期 101-105页

作者：赵洁雅黄炯汪阳苗书魁王杰沈辰峰木克日木古丽扎提汪萍夏俊新疆农业大学动物医学学院乌鲁木齐830000 新疆畜牧科学院兽医研究所(新疆畜牧科学院动物临床医学研究中心) 乌鲁木齐830000

为了制备针对小反刍兽疫病毒(Peste des peties ruminants virus,PPRV)F基因的核酸疫苗,并评价其对小鼠的免疫效果,试验采用DNA重组技术将F基因、优化密码子后的F基因以及连接乙型脑炎病毒信号肽(JEVSP)的优化密码子后的F基因3个目的片... 详细信息

为了制备针对小反刍兽疫病毒(Peste des peties ruminants virus,PPRV)F基因的核酸疫苗,并评价其对小鼠的免疫效果,试验采用DNA重组技术将F基因、优化密码子后的F基因以及连接乙型脑炎病毒信号肽(JEVSP)的优化密码子后的F基因3个目的片段分别克隆到真核表达载体pcDNA3.1(+),构建重组质粒pcDNA3.1(+)-F、pcDNA3.1(+)-F-opt和pcDNA3.1(+)-JEVSP-F-opt,大量培养重组质粒菌后,以碱裂解法将菌体悬浮裂解,经中空纤维切向流超滤和微滤浓缩处理,将制备的核酸疫苗以100μg/只的剂量给Balb/c小鼠肌肉注射免疫,共分为4组,pcDNA3.1(+)-F组、pcDNA3.1(+)-F-opt组、pcDNA3.1(+)-JEVSP-F-opt组和pcDNA3.1(+)空载体组,每隔14 d免疫1次,共免疫3次,每次免疫14 d后利用中和试验检测抗体水平。结果表明:成功制备核酸疫苗pcDNA3.1(+)-F、pcDNA3.1(+)-F-opt和pcDNA3.1(+)-JEVSP-F-opt,免疫Balb/c小鼠14 d后pcDNA3.1(+)空载体免疫组中和抗体阳性率为0,pcDNA3.1(+)-F组、pcDNA3.1(+)-F-opt组、pcDNA3.1(+)-JEVSP-F-opt组抗体转阳性,且pcDNA3.1(+)-F-opt组、pcDNA3.1(+)-JEVSP-F-opt组抗体水平呈逐渐增加的趋势。说明成功制备小反刍兽疫核酸疫苗,并且能在小鼠上产生抗体。

关键词：小反刍兽疫 F基因核酸疫苗制备工艺浓缩免疫水平