检索结果-南通市图书馆

Surface-derived phosphate layer on NiFe-layered double hydroxide realizes stable seawater oxidation at the current density of 1 A·cm^(−2)

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 Research 2024年第7期17卷 5786-5794页

作者： Chaoxin Yang Zhengwei Cai Jie Liang Kai Dong Zixiao Li Hang Sun Shengjun Sun Dongdong Zheng Hui Zhang yongsong luo Yongchao Yao Yan Wang Yuchun Ren Qian Liu Luming Li Wei Chu Xuping Sun Bo Tang College of Chemistry Chemical Engineering and Materials ScienceShandong Normal UniversityJinan 250014China Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of ChinaChengdu 610054China Department of Science and Environmental Studies Faculty of Liberal Arts and Social Sciencethe Education University of Hong KongHong Kong 999077China Institute for Advanced Study Chengdu UniversityChengdu 610106China Laoshan Laboratory Qingdao 266237China

Seawater electrolysis,especially in coastlines,is widely considered as a sustainable way of making clean and high-purity H2 from renewable energy;however,the practical viability is challenged severely by the limited anode durability resulting from side reactions of chlorine ***,we report an effective Cl^(−) blocking barrier of NiFe-layer double hydroxide(NiFe-LDH)to harmful chlorine chemistry during alkaline seawater oxidation(ASO),a pre-formed surface-derived NiFe-phosphate(Pi)***,the PO_(4)^(3−)-enriched outer-layer is capable of physically and electrostatically inhibiting Cl−adsorption,which protects active Ni^(3+)sites during *** NiFe-LDH with the NiFe-Pi outer-layer(NiFe-LDH@NiFe-Pi)exhibits higher current densities(j)and lower overpotentials to afford 1 A·cm^(−2)(η1000 of 370 mV versusη1000 of 420 mV)than the NiFe-LDH in 1 M KOH+***,the NiFe-LDH@NiFe-Pi also demonstrates longer-term electrochemical durability than NiFe-LDH,attaining 100-h duration at the j of 1 A·cm^(−2).Additionally,the importance of surface-derived PO_(4)^(3−)-enriched outer-layer in protecting the active centers,γ-NiOOH,is explained by ex situ characterizations and in situ electrochemical spectroscopic studies.

关键词： seawater oxidation phosphate outer-layer layered double hydroxide electrostatic repulsion in situ Raman

Electrocatalytic synthesis of C-N coupling compounds from CO_(2) and nitrogenous species

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

SusMat 2024年第2期4卷 51-74页

作者： Zheng Zhang Danyang Li Yunchuan Tu Jiao Deng Huiting Bi Yongchao Yao Yan Wang Tingshuai Li yongsong luo Shengjun Sun Dongdong Zheng Sónia A.C.Carabineiro Zhou Chen Junjiang Zhu Xuping Sun Hubei Key Laboratory of Biomass Fibers and Eco-Dyeing&Finishing College of Chemistry and Chemical EngineeringWuhan Textile UniversityWuhanHubeiChina School of Chemistry and Chemical Engineering Chongqing UniversityChongqingChina i-Lab Vacuum Interconnected NanotechWorkstation(Nano-X)Suzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of SciencesSuzhouJiangsuChina Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of ChinaChengduSichuanChina College of Chemistry Chemical Engineering and Materials ScienceShandong Normal UniversityJinanShandongChina LAQV-REQUIMTE Department of ChemistryNOVA School of Science and TechnologyUniversidade NOVA de Lisboa2829-516 CaparicaPortugal College of Materials Xiamen UniversityXiamenFujianChina

The electrocatalytic synthesis of C-N coupling compounds from CO_(2) and nitrogenous species not only offers an effective avenue to achieve carbon neutral-ity and reduce environmental pollution,but also establishes a route to synthesize valuable chemicals,such as urea,amide,and *** innovative approach expands the application range and product categories beyond simple carbona-ceous species in electrocatalytic CO_(2) reduction,which is becoming a rapidly advancing *** review summarizes the research progress in electrocatalytic urea synthesis,using N_(2),NO_(2)^(-),and NO_(3)^(-)as nitrogenous species,and explores emerging trends in the electrosynthesis of amide and amine from CO_(2) and nitro-gen ***,the future opportunities in this field are highlighted,including electrosynthesis of amino acids and other compounds containing C-N bonds,anodic C-N coupling reactions beyond water oxidation,and the catalytic mechanism of corresponding *** critical review also captures the insights aimed at accelerating the development of electrochemical C-N coupling reactions,confirming the superiority of this electrochemical method over the traditional techniques.

关键词： C-N coupling CO_(2) reduction electrocatalysis nitrogenous species reaction mechanism

一维p-n结促进锂硫电池中多硫化物的双向转换研究

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Science China Materials 2024年第1期67卷 93-106页

作者：王迪闫海龙杨亚程晋炳陆阳罗永松庞欢 Henan International Joint Laboratory of MXene Materials Microstructure School of Physics and Electronic EngineeringNanyang Normal UniversityNanyang 473061China Engineering Research Center for MXene Energy Storage Materials of Henan Province School of Physics and Electronic EngineeringXinyang Normal UniversityXinyang 464000China School of Chemistry and Chemical Engineering Yangzhou UniversityYangzhou 225002China

锂硫电池中氧化还原反应涉及复杂的多相转化过程,对其性能至关重要.催化转换是缓解穿梭效应的有效策略,但单组分催化剂在双向氧化还原过程中并不能充分发挥作用.为此,我们制备了一维ZnO@NiO核-壳纳米带(CNBs),通过p-n结界面来解决这些问... 详细信息

锂硫电池中氧化还原反应涉及复杂的多相转化过程,对其性能至关重要.催化转换是缓解穿梭效应的有效策略,但单组分催化剂在双向氧化还原过程中并不能充分发挥作用.为此,我们制备了一维ZnO@NiO核-壳纳米带(CNBs),通过p-n结界面来解决这些问题.自发内置电场(BIEF)诱导界面电荷重新分配,促进了ZnO和NiO之间的电荷和多硫化物的转移.适度的吸附能和多硫化物转化能垒的降低进一步加速了硫的双向转化.ZnO@NiOCNBs阴极在0.1C下的放电容量为1525.5mAhg^(-1),在2C下循环1000次后,保持了73.60%的容量保持率,相当于每循环损失0.026%的容量.本研究证明了BIEF和异质结构的结合促进了多硫化物的转化,为调控多硫化物氧化还原反应提供了新策略.

关键词：多硫化物氧化还原反应有效策略氧化还原过程锂硫电池双向转化双向转换异质结构

A flexible dual-function capacitive sensor enhanced by looppatterned fibrous electrode and doped dielectric pillars for spatial perception

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Nano Research 2023年第5期16卷 7550-7558页

作者： yongsong luo Xiaoliang Chen Xiangming Li Hongmiao Tian Liang Wang Jinyou Shao Micro-and Nano-technology Research Center State Key Laboratory for Manufacturing Systems EngineeringXi’an Jiaotong UniversityXi’an 710049China Frontier Institute of Science and Technology(FIST) Xi’an Jiaotong UniversityXi’an 710049China

The integrated perception capable of detecting and monitoring varieties of activities is one of the ultimate purposes of wearable electronics and intelligent *** by the space occupation,it lacks practical feasibility to stack multiple types of single sensors on each ***,a high-sensitivity dual-function capacitive sensor with proximity sensing and pressure sensing is *** fringing electric field can be confined in the proximity-sensitive area by fibrous loop-patterned electrode,leading to more stolen charges when object approaching and thus a high proximity *** high-permittivity doped structured dielectric layer reduces the compressive stiffness and enhances the rate of compression-caused increase in the equivalent relative permittivity of the dielectric layer,resulting in a larger increase in capacitance and thus a high pressure *** electrodes and dielectric layer together compose the capacitor and act as the sensor without taking up additional *** decoupling of proximity-sensing and pressure-sensing modes can be achieved by decrease or increase in *** with array distribution and sequential scanning,the sensors can be used for detection of motion trajectory,contour recognition,pressure distribution.

关键词： capacitive proximity sensing pressure sensing fibrous microstructuring doping

Ultrathin ZnS nanosheet/carbon nanotube hybrid electrode for high-performance flexible all-solid-state supercapacitor

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 Research 2017年第8期10卷 2570-2583页

作者： Xiaoyi Hou Tao Peng Jinbing Cheng Qiuhong Yu Rongjie luo Yang Lu Xianming Liu Jang-Kyo Kim Jun He yongsong luo School of Physics and Electronic Engineering Xinyang Normal University Xinyang 464000 China Key Laboratory of Advanced Micro/Nano Functional Materials Xinyang Normal University Xinyang 464000 China College of Chemistry and Chemical Engineering Luoyang Normal University Luoyang 471022 China Department of Mechanical and Aerospace Engineering Hang Kong University of Science and Technology Clear Water Bay Kowloon Hang Kong China National Center for Nanoscience and Technology Beijing 100190 China

Flexible and easily reconfigurable supercapacitors show great promise for application in wearable electronics. In this study, multiwall C nanotubes （CNTs） decorated with hierarchical ultrathin zinc sulfide （ZnS） nanosheets （ZnS@CNT） are synthesized via a facile method. The resulting ZnS@CNT electrode, which delivers a high specific capacitance of 347.3 F·g^-1 and an excellent cycling stability, can function as a high-performance electrode for a flexible all-solid-state supercapacitor using a polymer gel electrolyte. Our device exhibits a remarkable specific capacitance of 159.6 F·g^-1, a high energy density of 22.3 W·h·kg^-1, and a power density of 5 kW·kg^-1 It also has high electrochemical performance even under bending or twisting. The all-solid-state supercapacitors can be easily integrated in series to power different commercial light-emitting diodes without an external bias voltage.

关键词： multiwall C nanotubes decorated with hierarchical ultrathin zinc sulfide nanosheets(ZnS@CNT) ultrathin nanosheet flexible synergistic supercapacitor

Porous LaFeO3 nanofiber with oxygen vacancies as an efficient electrocatalyst for N2 conversion to NH3 under ambient conditions

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2020年第11期29卷 402-408页

作者： Chengbo Li Dongwei Ma Shiyong Mou yongsong luo Benyuan Ma Siyu Lu Guanwei Cui Quan Li Qian Liu Xuping Sun College of Chemistry and Materials Science Sichuan Normal UniversityChengdu 610068SichuanChina Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of ChinaChengdu 610054SichuanChina Key Laboratory for Special Functional Materials of Ministry of Education and School of Materials Science and EngineeringHenan UniversityKaifeng 475004HenanChina Green Catalysis Center and College of Chemistry Zhengzhou UniversityZhengzhou 450001HenanChina College of Chemistry Chemical Engineering and Materials ScienceShandong Normal University.Jinan 250014ShandongChina

Electrocatalytic N2 reduction to NH3 under ambient conditions is an eco-friendly and sustainable alternative to the traditional Haber-Bosch process. However, inhibited by the high activation barrier of N2, this process needs efficient electrocatalysts to adsorb and activate the N2, enabling the N2 reduction reaction(NRR). Herein, we report that porous LaFeO3 nanofiber with oxygen vacancies acts as an efficient NRR electrocatalyst with abundant active sites to enhance the adsorption and activation of N2. When tested in 0.1 M HCl, such electrocatalyst achieves a high Faradaic efficiency of 8.77% and a large NH3 yield rate of 18.59 μg h–1 mgcat–***-0.55 V versus reversible hydrogen electrode. This catalyst also shows high long-term electrochemical stability and excellent selectivity for NH3 formation. Density functional theory calculations reveal that, by introducing oxygen vacancy on LaFeO3, the subsurface metallic ions are exposed with newly localized electronic states near the Fermi level, which facilitates the adsorption and activation of N2 molecules as well as the subsequent hydrogenation reactions.

关键词： N2 reduction reaction Oxygen vacancies Porous nanofiber Ambient conditions Density functional theory

2023年7-10月河北省秦皇岛市新冠病毒基因组变异监测分析

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

中国国境卫生检疫杂志 2024年第3期47卷 305-307页

作者：文明新于良时晨王姝鑫罗永松秦皇岛市疾病预防控制中心河北秦皇岛066001

目的实时监测秦皇岛市新冠病毒变异株流行趋势和变化特征,以及各亚型的构成,为制定本土防控政策提供依据。方法收集河北省秦皇岛市2023年7-10月本土新冠病毒感染者鼻咽拭子样本,每周5例,共80例,采用二代测序技术进行新冠病毒全基因组测... 详细信息

目的实时监测秦皇岛市新冠病毒变异株流行趋势和变化特征,以及各亚型的构成,为制定本土防控政策提供依据。方法收集河北省秦皇岛市2023年7-10月本土新冠病毒感染者鼻咽拭子样本,每周5例,共80例,采用二代测序技术进行新冠病毒全基因组测序分析。结果经过Pangolin分型分析,80株本土新冠病毒中EG.5.1.1变异株52株,占65%;HK.3变异株13株,占16%;EG.5.1变异株5株,占6%;XBB.1.16变异株4株,占5%;还检出FY.3、FU.1、XBB.1.34、HK.1、GY.1、GY.6变异株,共6株,占7.50%。基因组变异分析显示:和EG.5.1.1变异株相比,HK.3变异株在刺突蛋白受体结合结构域(receptor binding domain,RBD)出现L455F和F456L两种氨基酸翻转突变。结论秦皇岛市2023年7-10月主要流行株为奥密克戎(Omicron)EG.5.1.1和HK.3两种变异株,在HK.3变异株刺突蛋白出现氨基酸F(苯丙氨酸)和L(亮氨酸)翻转。

关键词：新冠病毒全基因组测序变异刺突蛋白二代测序

N, O-doped carbon foam as metal-free electrocatalyst for efficient hydrogen production from seawater

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Nano Research 2022年第10期15卷 8922-8927页

作者： Qian Liu Shengjun Sun Longcheng Zhang yongsong luo Qin Yang Kai Dong Xiaodong Fang Dongdong Zheng Abdulmohsen Ali Alshehri Xuping Sun Institute for Advanced Study Chengdu UniversityChengdu 610106China Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of ChinaChengdu 610054China Chemistry Department Faculty of ScienceKing Abdulaziz UniversityP.O.Box 80203Jeddah 21589Saudi Arabia College of Chemistry Chemical Engineering and Materials ScienceShandong Normal UniversityJinan 250014China

Seawater electrolysis is the most promising technology for large scale hydrogen production due to the abundance and low cost of seawater in ***,compared with the traditional freshwater electrolysis,the issues of electrode poisoning and corrosion will occur during the seawater electrolysis process,and active and stable electrocatalysts for the hydrogen evolution reaction(HER)are thus highly *** this work,N,O-doped carbon foam in-situ derived from commercial melamine foam is proposed as a high-active metal-free HER electrocatalyst for seawater *** acidic seawater,our catalyst shows high hydrogen generation performance with small overpotential of 161 mV at 10 mA·cm^(−2),a low Tafel slop of 97.5 mV·dec^(−1),and outstanding stability.

关键词： carbon foam hydrogen evolution reaction seawater electrolysis electrocatalyst

High-performance asymmetrical supercapacitor composed of rGO-enveloped nickel phosphite hollow spheres and N/S co-doped rGO aerogel

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 Research 2018年第3期11卷 1651-1663页

作者： Deyang Zhang Yihe Zhang yongsong luo Yu Zhang Xiaowei Li Xuelian Yu Hao Ding PaulK. Chu Li Sun Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes National Laboratory of Mineral Materials School of Materials Science and Technology China University of Geosciences Beijing 100083 Chin School of Physics and Electronic Engineering Xinyang Normal University Xinyang 464000 China Department of Physics and Department of Materials Science and Engineering City University of Hong Kong Tat Chee Avenue Kowloon Hong Kong Chin

An asymmetrical supercapacitor （ASC）, comprising reduced graphene oxide （rGO）-encapsulated nickel phosphite hollow microspheres （NPOH-0.5@rGO） as positive electrode, and porous nitrogen/sulfur co-doped rGO aerogel （NS-3D rGO） as negative electrode has been prepared. The NPOH-0.5@rGO electrode combines the advantages of the NPOH hollow microspheres and the conductive rGO layers giving rise to a large specific capacitance, high cycling reversibility, and excellent rate performance. The NS-3D rGO electrode with abundant porosity and active sites promotes electrolyte infiltration and broadens the working voltage range. The ASC （NPOH-0.5@rGO//NS-3D rGO） shows a maximum voltage of up to 1.4 V, outstanding cycling ability （capacitance retention of 95.5% after 10,000 cycles）, and excellent rate capability （capacitance retention of 77% as the current density is increased ten times）. The ASC can light up an light-emitting diodes （LED） for more than 20 min after charging for 20 s. The fabrication technique and device architecture can be extended to other active oxide and carbon-based materials for next-generation high-performance electrochemical storage devices.

关键词： nickel phosphate hollow sphere graphene nitrogen/sulfurco-doping asymmetrical supercapacitor