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Eutectic-derived synthesis of hierarchically nanoporous copper for electrochemical actuation and solar steam generation

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Nano Research 2024年第3期17卷 2011-2018页

作者： Qingguo Bai Yan Wang Fuquan Tan zhonghua zhang Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials(Ministry of Education) School of Materials Science and EngineeringShandong UniversityJingshi Road 17923Jinan 250061China School of Applied Physics and Materials Wuyi UniversityDongcheng Village 22Jiangmen 529020China School of Materials Science and Engineering University of JinanWest Road of Nan Xinzhuang 336Jinan 250022China

The utilization of nanoporous copper(np-Cu)as a metallic actuator has gained attention in recent years due to its cost-effectiveness in comparison to other precious *** this,the enhancement of np-Cu’s actuation performance remains a challenge due to limitations in its strain amplitude and actuation ***,np-Cu has been deemed as a promising material for solar absorption due to its localized surface plasmon resonance ***,practical applications such as solar steam generators(SSGs)utilizing np-Cu have yet to be *** this study,we present the development of hierarchically nanoporous copper(HNC)through the dealloying of a eutectic Al-Cu *** hierarchical structure of the HNC features a combination of ordered flat channels and randomly distributed continuous nanopores,which work in synergy to improve actuation *** ordered flat channels,with a sub-micron scale,facilitate rapid mass transport of electrolyte ions,while the nano-sized continuous pores,due to their large specific surface area,enhance the induced *** results indicate that the HNC exhibits improved actuation performance,with a two times increase in both strain amplitude and rate in comparison to other reported ***,the HNC,for the first time,showcases excellent solar steam generation capabilities,with an evaporation rate of 1.47 kg·m^(-2)·h^(-1) and a photothermal conversion efficiency of 92%under a light intensity of 1 kW·m^(-2),which rivals that of nanoporous gold and silver *** enhanced actuation performance and newly discovered solar steam generation properties of the HNC are attributed to its hierarchically porous structure.

关键词： eutectic alloy dealloying hierarchically nanoporous copper(HNC) actuation solar steam generation

Unlock the full potential of carbon cloth-based scaffolds towards magnesium metal storage via regulation on magnesiophilicity and surface geometric structure

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Journal of Energy Chemistry 2024年第3期90卷 423-434,I0010页

作者： Jing Liu Min Wang zhonghua zhang Jinlei zhang Yitao He Zhenfang Zhou Guicun Li College of Materials Science and Engineering Qingdao University of Science and TechnologyQingdao 266042ShandongChina Department of Pharmacy Jining Medical UniversityRizhao 276826ShandongChina Department of Energy and Power Engineering School of Energy and EnvironmentAnhui University of TechnologyMa’anshan 243000AnhuiChina

The development of rechargeable magnesium(Mg) batteries is of practical significance to upgrade the electric energy storage devices due to exceptional capacity and abundant resources of Mg-metal ***,the reversible Mg electrochemistry suffers from unsatisfied rate capability and lifespan,mainly caused by non-uniform distribution of *** this work,a fresh design concept of threedimensional carbon cloths scaffolds is proposed to overcome the uncontrollable Mg growth via homogenizing electric field and improving magnesiophilicity.A microscopic smooth and nitrogen-containing defective carbonaceous layer is constructed through a facile pyrolysis of ZIF8 on carbon *** revealed by finite element simulation and DFT calculation results,the smooth surface endows with uniform electric field distribution and simultaneously the nitrogen-doping species enable good magnesiophilicity of *** fine and uniform Mg nucleus as well as the inner electrodeposit behavior are also *** a result,an exceptional cycle life of 500 cycles at 4.0 mA cm^(-2) and 4.0 mA h cm^(-2) is firstly realized to our best ***,the functional scaffolds can be cycled for over 2200 h at 2.0 mA cm^(-2) under a normalized capacity of 5.0 mA h cm^(-2),far exceeding previous *** work offers an effective approach to enable the full potential of carbon cloths-based scaffolds towards metal storage for next generation battery applications.

关键词： Magnesium metal anodes Electrodeposition Heterogeneous nucleation

Effect of casting process on the inner-wall band segregation of high-strength antisulfur pipes

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Baosteel Technical Research 2024年第1期18卷 27-36页

作者： LUO Ming zhang zhonghua Research Institute Baoshan Iron&Steel Co.Ltd.Shanghai 201999China

Controlling inner-wall band segregation is one of the difficulties in the production of high-strength antisulfur *** tests were carried out on different casting processes(superheat,mold electromagnetic stirring,end electromagnetic stirring,casting speed and soft reduction)for the smelting of high-strength antisulfur *** microstructures of continuous-casting billets and hot-rolled or tempered pipes were analyzed using a metallographic microscope and scanning electron *** mechanism and evolution law regarding the inner-wall band segregation of high-strength antisulfur pipes were studied,and the influence of different casting processes was explored.

关键词： high strength antisulfur pipe casting process spot segregation band segregation

A near-complete cucumber reference genome assembly and Cucumber-DB,a multi-omics database

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Molecular Plant 2024年第8期17卷 1178-1182页

作者： Jiantao Guan Han Miao zhonghua zhang Shaoyun Dong Qi Zhoul Xiaoping Liu Diane M.Beckles Xingfang Gul Sanwen Huang Shengping zhang State Key Laboratory of Vegetable Biobreeding Institute of Vegetables and FlowersChinese Academy of Agricultural SciencesBeijing 100081China Shenzhen Branch Guangdong Laboratory of Lingnan Modern AgricultureGenome Analysis Laboratory of the Ministry of Agriculture and Rural AffairsAgricultural Genomics Institute at ShenzhenChinese Academy of Agricultural SciencesShenzhenChina Engineering Laboratory of Genetic Improvement of Horticultural Crops of Shandong Province College of HorticultureQingdao Agricultural UniversityQingdao266109China Department of Plant Sciences University of CaliforniaDavisOne Shield AvenueDavisCA95616USA

Dear Editor,Cucumber(Cucumis sativus)is a key vegetable crop and an essential model for genetics and genomics research in Cucurbitaceae,especially in studies on plant sex determination and vascular *** the first sequenced genome among vegetable crops,the cucumber reference genome has been a crucial genetic resource for comparative genomics and genetic ***,the latest version of the cucumber *** Long reference genome(CLv3.0),generated using PacBio long-reads data,is *** a predicted genome size of 350-367 Mb,CLv3.0 encompasses only 226.2 Mb,leaving 72 gaps and over 120 Mb of unknown *** low assembly completeness(approximately 62%)is primarily due to the high proportion(~30%)of heterochromatic satellite and rDNA sequences in cucumber,substantially higher than that observed in many other species such as Arabidopsis,rice,maize,and watermelon,where it is less than 5%(Han et al.,2008;Huang et al.,2009;Li et al.,2019).

关键词： crops incomplete cucumber

Development and microstructure characterization of BG110E high-strength expansion pipe

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Baosteel Technical Research 2024年第1期18卷 37-42页

作者： DONG Xiaoming zhang zhonghua GAO Zhan Research Institute Baoshan Iron&Steel Co.Ltd.Shanghai 201999China State Key Laboratory of Oil and Gas Equipment Shanghai 201999China

The BG110E high-strength expansion pipe was developed using medium manganese steel and subjected to a two-phase zone heat treatment *** properties and microstructure analysis results have proven that the BG110E expansion pipe exhibits uniform elongation of more than 19%.Moreover,after undergoing expan-sion deformation,its strength,toughness,and plasticity are found to meet the stringent requirements of the P110 *** microstructure of this high-strength expansion pipe,which has a strength of 110 ksi(1 ksi=6.895 MPa),consists of tempered martensite,ferrite,retained austenite,and granular *** propotion of retained austenite reaches up to 12%,ensuring high plasticity and the occurrence of the transformation-induced plasticity effect during the deformation ***,it enhances the coordinated deformation ability between different phases,which significantly improves the internal yield pressure of the BG110E high-strength expansion pipe in turn.

关键词： retained austenite two-phase zone heat treatment medium manganese steel

Recent advances and trends of single-atom catalysts for proton exchange membrane fuel cell cathodes

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ChemPhysMater

ChemPhysMater 2024年第2期3卷 143-156页

作者： Zihao Wan Feng Liu Hongfei Xu Shuaili Zhao Zhen An Zizai Ma zhonghua zhang Yun Wu Xiaoguang Wang Laboratory of Advanced Materials and Energy Electrochemistry Institute of New Carbon MaterialsCollege of Material Science and EngineeringTaiyuan University of TechnologyTaiyuan 030024China Datong Innoreagen Power Technology Co. LtdDatong 037000China College of Chemistry Taiyuan University of TechnologyTaiyuan 030024China Shanxi Key Laboratory of Gas Energy Efficient and Clean Utilization Taiyuan University of TechnologyTaiyuan 030024China Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials(Ministry of Education) School of Materials Science and EngineeringShandong UniversityJinan250061China Department of Materials Science and Engineering Guangdong University of Petrochemical TechnologyMaoming 525000China

Proton exchange membrane fuel cells(PEMFCs),which have the advantages of high-power density,zero emission,and low noise,are considered ideal electrochemical conversion systems for converting hydrogen(H2)and oxy-gen(O_(2))/air into ***,the oxygen reduction reaction(ORR),which is accompanied by multiple electrons,results in voltage loss and low conversion efficiency of ***,PEMFCs mainly use high-load precious platinum(Pt)to promote the ORR process;however,the high cost of Pt hinders the widespread commercialization of *** the past few years,metal-nitrogen-carbon single-atom catalysts(M-N-C SACs)have attracted considerable attention and have been recognized as potential Pt-based catalysts owing to their outstanding ORR *** review briefly introduces the components of ***,we discuss the catalytic mechanisms of the M-N-C SACs for the ***,the latest advances in noble,non-noble,and heteroatom-doped M-N-C SACs used as ORR and PEMFCs cathode catalysts are systematically *** sum-mary,we have outlined the current challenges and proposed a future perspective of M-N-C SACs for PEMFCs cathodes.

关键词： Proton exchange membrane fuel cells Oxygen reductionreaction Cathode Platinum-based catalysts Metal-nitrogen-carbon single-atom catalysts

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论中国式德育方法论的整体建构

教育发展研究 2024年第15期44卷 102-108页

作者：张忠华江苏大学教师教育学院镇江212013

依据知、情、意、行统一发展规律所建立的传统德育方法论体系,具有历史时代的合理性、合法性,在德育实践中发挥了积极的效应。但传统德育方法论受“主知主义”的影响,偏重说理教育,忽视道德主体的能动性和德育方法论的整体性。受主体哲... 详细信息

依据知、情、意、行统一发展规律所建立的传统德育方法论体系,具有历史时代的合理性、合法性,在德育实践中发挥了积极的效应。但传统德育方法论受“主知主义”的影响,偏重说理教育,忽视道德主体的能动性和德育方法论的整体性。受主体哲学、中国社会变革的影响,在深化德育本质认识的基础上,借鉴德育方法的国际经验,中国式德育方法论需要转型而进行整体建构,把提高道德认知、激发道德情感、淬炼道德意志、养成道德行为的方法与道德主体领会感悟、自主建构的方法有效整合,发挥德育方法论的整体功能。

关键词：中国式德育方法论整体建构说理教育实践锻炼自主建构

东京都市圈演变历程及外围市镇特色化转型发展研究

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城市发展研究 2024年第3期31卷 6-12页

作者：李赢张沛张中华西安建筑科技大学建筑学院

东京都市圈是世界级都市圈，其空间规划和制度变迁过程中的经验教训值得学习和借鉴。通过分析东京都市圈发展演变过程中的人口变迁、区域联系、产业重构、空间演变特征，解析中心城市与外围市镇的互动发展机制，并以神奈川县相模机器人... 详细信息

东京都市圈是世界级都市圈，其空间规划和制度变迁过程中的经验教训值得学习和借鉴。通过分析东京都市圈发展演变过程中的人口变迁、区域联系、产业重构、空间演变特征，解析中心城市与外围市镇的互动发展机制，并以神奈川县相模机器人产业特区为典型案例，总结东京都市圈外围特色市镇的转型发展思路和经验。研究得到的启示包括：空间演变规律性与规划体系性相交互、区域发展协同性与主体能动性相融合、空间策略引领性与制度创新性相结合，以期为我国大都市圈特色小（城）镇的发展提供有益参考。

关键词：东京都市圈外围市镇特色化转型

新时代社会主义核心价值观教育研究回顾与前瞻

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教育学术月刊 2024年第5期 3-9页

作者：张忠华江苏大学教师教育学院教育科学研究所江苏镇江212013

新时代我国学者围绕社会主义核心价值观教育的意义与功能、发展历程、基础理论、教育原则、教育策略与教育路径、教育模式与方法等主题进行了广泛探索,取得了可喜的成就。在网络新媒体、多元文化的社会背景下,其研究还存在着理论品性不... 详细信息

新时代我国学者围绕社会主义核心价值观教育的意义与功能、发展历程、基础理论、教育原则、教育策略与教育路径、教育模式与方法等主题进行了广泛探索,取得了可喜的成就。在网络新媒体、多元文化的社会背景下,其研究还存在着理论品性不足,实践情怀空泛,一元主导多元的困惑;重形式轻内容,重宣教轻践行,缺乏行之有效的教育模式与方法的探讨;研究主要集中在高校领域,中小学、社会和家庭领域研究不足;在研究方法与研究视角方面存在着重思辨研究,比较研究、实证研究、多学科、跨学科的研究成果较少。今后要加强社会主义核心价值观教育理论本身的创新研究,深化价值观教育规律的探索,在综合分析影响因素的基础上,引导、鼓励开展社会主义核心价值观教育实践创新,把社会主义核心价值观教育融入社会的各种实践活动中,不断拓宽研究领域、丰富研究视角,把质性研究与量化研究统一起来。

关键词：新时代社会主义核心价值观教育策略教育路径教育方法