Large-scale synthesis of metal nanosheets as highly active catalysts:Combining accumulative roll-bon

来源 :材料学前沿 | 被引量 : 0次 | 上传用户:sparkman007
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
Metal nanosheets with ultrathin layer of metal atoms represent relatively high specific surface area and fast electronic transmission [1-2].Besides,metal nanosheets are considered to expose abundant active sites,thereby exhibiting significant advantages [3].As a result,metal nanosheets have attracted widespread attention in the field of catalysis [4-8],energy storage [9-10],environmental protection [11],and sensing [12] in recent years.For example,amorphous Ir nanosheets were found to be effectively applied to oxygen evolution reaction (OER)under acidic media with a high mass activity of 221.8 A·g-1 [4].Besides,highly distorted Pt nanosheets also revealed superior reactivity and stability as electro-catalysts in oxygen reduction reaction (ORR) with specific activity of 3.1 mA·cm-2 [13].
其他文献
构建信息化、数字化、智能化的智慧应急新模式,旨在解决目前我国突发公共卫生事件应对过程中快速响应机制、多部门统一协调协作、信息交互流程等方面存在的薄弱环节以及应急管理效率低下等问题,全面提升公共安全领域应对与处置能力。本文采用描述性研究法,较为全面地分析了国外公共卫生应急体系建设与智慧应急发展现状,准确梳理了我国卫生应急管理的需求、现状和存在问题;提出了我国公共卫生智慧应急体系的中长期发展目标、重大任务、实现技术途径。研究建议,规划实施卫生应急国家生物综合监测预警建设重大工程,制定和修订新型智慧化卫生应急相
Unlike fossil fuels,hydrogen is a renewable and clean energy source.It is available in a large amount and spreads throughout the world.When reacting with oxygen,hydrogen releases energy to produce water as the only product.Hence,hydrogen is a promising al
期刊
The design and development of multifunctional nano-drug delivery systems (NDDSs) is a solution that is expected to solve some intractable problems in traditional cancer treatment.In particular,metal-organic frameworks (MOFs) are novel hybrid porous nanoma
This study aims to investigate hydrofracturing in double-layered soil through theoretical and experimental analysis,as multilayered soils where the difference in mechanical properties exists are generally encountered in practical engineering.First,an anal
This study reports on the effects of multilayer graphene oxide (MGO) on compressive strength,flexural strength,and microstructure of cement mortar.The cement mortar was prepared with type P.Ⅱ.52.5 Portland cement,standard sand,and MGO.Four mixes were prep
A hydrothermal deposition method was utilized to fabricate Ca-P composite coating induced by the layer-by-layer (LbL) assembled polyvinylpyrrolidone/deoxyribonucleic acid (PVP/DNA)20 multilayer on AZ31 alloy.The surface morphology and compositions were ch
新型冠状病毒肺炎疫情(以下简称“新冠肺炎疫情”)已经造成严重的人员伤亡和经济损失,加强突发性公共卫生安全应急情报协同机制研究,构建更加高效可信的情报共享体系,已经成为完善和优化我国公共卫生安全情报管理的核心问题。本文分析了新冠肺炎疫情下公共卫生安全应急情报的结构特征和内涵,提出了我国突发疫情应急情报组织管理的新架构。结合区块链分布式信任机制,构建了分层级的应急部门情报共享区块链模型,深入阐述了应急情报联盟区块链、区块结构以及侧链交互机制的实现方式,给出了应急情报的上传、共享、下载与回溯流程。以南京市疫情发
在我国“绿色生产,节能减排”政策的倡导下,微生物制造产业飞速发展,涉及农业、食品、能源、化工等多领域,并产生了良好的经济效益与社会价值。本文阐述了全球微生物制造产业的发展态势,分析了我国微生物制造产业在发酵食品、生物肥料、酶制剂、生物基、生物质能领域的发展现状,全面解析我国微生物制造产业发展的机遇与挑战。研究表明,我国微生物制造产业涉及多个领域,研发技术不断改革创新,一些发酵大宗产业生产水平位居世界前列,新菌种新产品持续增多,工业生产规模逐步扩大。与此同时,我国微生物制造产业也面临着核心菌种自主率低,前沿
突发公共卫生事件严重危害人民生命健康,对国家安全、社会稳定和经济发展造成严重后果。本文在新型冠状病毒肺炎疫情应急背景下,从监测预警和评价、诊断与治疗、基础科学研究、人才教育培训、物质设备产业支撑和社会动员与协调行动六大体系分析我国突发公共卫生事件应急防控体系建设现状,指出强化体系建设是我国新发展阶段的现实需求。根据我国公共卫生体系建设在机构定位和能力建设、投入和支撑硬件、管理体系等方面存在的不足,提出建立国家统筹协调和应急指挥机制体系,强化临床、科技、教育、产业支撑能力及进一步推进国际合作等下一阶段加强我
摘要:为了保障建筑工程的顺利开展,就需要优化工程造价,并对工程造价预结算的审核问题进行必要深入分析探究。文章主要分析了建筑工程造价预结算审核的主要内容,并针对其存在的问题,提出了优化措施。  关键词:建筑工程;造价;预结算;审核  中图分类号: TU198 文献标识码: A  引言  建设工程造价预结算审核需要依据国家颁布的相关法规政策,国家建设主管单位颁发的建设工程项目定额、取费标准以及工程量的
期刊