检索结果-南通市图书馆

同方期刊数据库

How can the Dual-atom Catalyst FeCo-NC Surpass Singleatom Catalysts Fe-NC/Co-NC in CO_(2) RR?-CO Intermediate Assisted Promotion via a Synergistic Effect

在线全文

学校读者我要写书评

暂无评论

Energy & Environmental Materials 2023年第1期6卷 300-308页

作者： shoufu cao Sainan Zhou Hongyu Chen Shuxian Wei Siyuan Liu Xiaojing Lin Xiaodong Chen Zhaojie Wang Wenyue Guo Xiaoqing Lu School of Materials Science and Engineering China University of PetroleumQingdao Shandong 266580China College of Science China University of PetroleumQingdao Shandong 266580China

Atomically dispersed catalysts are widely adopted in CO_(2)reduction reaction(CO_(2)RR)due to maximal atomic utilization and high catalytic ***-atom catalysts(DACs),with more dispersed active sites and distinct electronic structures compared with single-atom catalysts(SACs),may exhibit diverse catalytic ***,the DAC FeCo-NC and SAC Fe-NC/Co-NC are employed as probes to explore DACs advantage in CO_(2)*** show that the moderate interaction between the dual-atom center and N coordination balances structural stability and catalytic *** is the only product on Fe-NC/Co-NC,and the high limiting potentials from−1.22 to−1.67 V inhibit further ***-NC assisted with CO intermediate exhibits low limiting potentials of−0.64 V for both CH_(3)OH and CH 4,comparable to those on Cu-based *** circumstance of applied potentials,CO_(2)RR on FeCo-NC has greater advantages in yielding CH_(3)OH and CH 4 than that on Fe-NC/Co-NC,and hydrogen evolution reaction is severely *** intrinsic essence is that dual-atom center can provide large spin-polarization and multi-electron transfer capability,rendering CO intermediates as effective electronic and geometric modifiers in CO_(2)*** work highlights FeCo-NC as a high-performance CO_(2)RR catalyst toward deep-reduction C1 products and elucidates CO intermediate assisted promotion mechanism via a dual-atom synergistic effect.

关键词： dispersed limiting rendering

Construction of pH-universal hydrogen evolution freeway in MoO_(3)-MoNi_(4)@Cu core-shell nanowires via synergetic electronic and geometric effect

在线全文

学校读者我要写书评

暂无评论

Nano Research 2023年第10期16卷 12253-12262页

作者： Xiaodong Chen shoufu cao Xiaojing Lin Xiaofei Wei Zhaojie Wang Hongyu Chen Chengcheng Hao Siyuan Liu Shuxian Wei Daofeng Sun Xiaoqing Lu School of Materials Science and Engineering China University of Petroleum(East China)Qingdao 266580China College of Science China University of Petroleum(East China)Qingdao 266580China

Both the adsorption/dissociation of water molecules and hydrogen intermediate(H*)are the major limitations to hydrogen evolution reaction(HER).Herein,the modulation of electronic structure and geometric configuration are combined to design onedimensional electrocatalyst with outstanding HER activity in a wide pH *** catalyst was composed of molybdenum trioxide doped molybdenum nickel alloy supported by copper nanowires(MoO_(3)-MoNi_(4)@Cu NWs).As revealed by the experimental characterizations and theoretical calculations,Cu NWs act as the electron donator to MoNi4,resulting in up shift of the d-band center in MoNi4,thus expediting H_(2)O adsorption and ***,the introduction of amorphous MoO_(3) sets up a unique geometric configuration on MoNi4 for the accelerated H*transfer via hydrogen-bond and hydrogen *** work provides a synergetic route for constructing HER freeway and promotes further investigations on more versatile electrocatalysis involving H_(2)O or H*.

关键词： pH-universal hydrogen evolution reaction(HER) electronic structure geometric configuration hydrogen-bond hydrogen spillover

Selectivity switching between CO and formate for CO_(2) reduction on Sb modified amorphous ZnO by electronic effect

维普期刊数据库评论

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 2023年第10期16卷 12144-12152页

作者： Hongyu Chen shoufu cao Lu Wang Xiaojing Lin Qiuying Zhu Yizhu Shang Shuxian Wei Siyuan Liu Zhaojie Wang Baojun Wei Xiaoqing Lu College of Science China University of PetroleumQingdao 266580China School of Materials Science and Engineering China University of PetroleumQingdao 266580China

The adjustable intermediate binding capacity in electrocatalytic carbon dioxide(CO_(2))reduction is critical for varying the reaction pathways to desired ***,we first report the synthesis of boron-doped amorphous zinc oxide with(B-a-ZnO-Sb)or without antimony nanoparticles embedding(B-a-ZnO)via one-step wet chemical method,which is easy to scale up by enlarging the vessel and increasing *** successfully realizes the product switching from CO on B-a-ZnO to formate on *** experimental and theoretical results reveal that Sb weakens the charge interaction on Zn *** on the moderate adsorption of*COOH and strong adsorption of*OCHO and*HCOOH for B-a-ZnO,the foreign Sb weakens the adsorption of these intermediates and brings about a favor formate production instead of *** work points out a new direction for the synthesis of amorphous ZnO-based catalysts and provides advanced insights into the aimed selectivity switch for CO_(2)reduction by electronic effect.

关键词： carbon dioxide reduction amorphous ZnO electronic effect selectivity switching

MOF-Transformed In_(2)O_(3-x)@C Nanocorn Electrocatalyst for Efficient CO_(2)Reduction to HCOOH

维普期刊数据库评论

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 2022年第10期14卷 219-234页

作者： Chen Qiu Kun Qian Jun Yu Mingzi Sun shoufu cao Jinqiang Gao Rongxing Yu Lingzhe Fang Youwei Yao Xiaoqing Lu Tao Li Bolong Huang Shihe Yang Guangdong Key Lab of Nano-Micro Material Research School of Chemical Biology and BiotechnologyPeking University Shenzhen Graduate SchoolShenzhen 518055People’s Republic of China Department of Chemistry and Biochemistry Northern Illinois UniversityDeKalbIL 60115USA Department of Applied Biology and Chemical Technology The Hong Kong Polytechnic UniversityHung HomKowloonHong Kong SARPeople’s Republic of China School of Materials Science and Engineering China University of PetroleumQingdaoShandong 266580People’s Republic of China Shenzhen International Graduate School Tsinghua UniversityShenzhenPeople’s Republic of China X-Ray Science Division and Joint Center for Energy Storage Research Argonne National LaboratoryLemontIL 60439USA Institute of Biomedical Engineering Shenzhen Bay LaboratoryShenzhen 518107People’s Republic of China

For electrochemical CO_(2) reduction to HCOOH,an ongoing challenge is to design energy efficient electrocatalysts that can deliver a high HCOOH current density(JHCOOH)at a low *** oxide is good HCOOH production catalyst but with low *** this work,we report a unique corn design of In_(2)O_(3-x)@C nanocatalyst,wherein In_(2)O_(3-x)nanocube as the fine grains dispersed uniformly on the carbon nanorod cob,resulting in the enhanced *** performance is achieved with 84%Faradaic efficiency(FE)and 11 mA cm^(−2)JHCOOH at a low potential of−0.4 V versus *** the current density of 100 mA cm^(−2),the applied potential remained stable for more than 120 h with the FE above 90%.Density functional theory calculations reveal that the abundant oxygen vacancy in In_(2)O_(3-x) has exposed more In^(3+) sites with activated electroactivity,which facilitates the formation of HCOO**** X-ray absorp-tion spectroscopy also confirms In^(3+) as the active site and the key intermediate of HCOO*during the process of CO_(2) reduction to HCOOH.

关键词： CO_(2)reduction Indium oxide Formate Corn design Active sites

在线全文

学校读者我要写书评

暂无评论

公有云桌面在高校移动化办公中的应用研究

福建电脑 2023年第10期39卷 49-52页

作者：黄利斌唐飞岳曹守富湖南开放大学现代教育技术中心长沙410000

由于高校教师工作地点和工作形式的多样化,传统办公计算机设备已经无法适应高校新的办公需求。因此,本文探讨了应用公有云桌面作为新的办公设备。实践结果表明,公有云桌面适应移动化办公,不仅管理方便,能为用户提供安全、稳定、高效、... 详细信息

由于高校教师工作地点和工作形式的多样化,传统办公计算机设备已经无法适应高校新的办公需求。因此,本文探讨了应用公有云桌面作为新的办公设备。实践结果表明,公有云桌面适应移动化办公,不仅管理方便,能为用户提供安全、稳定、高效、灵活的工作环境,而且能降低高校的办公成本。

关键词：办公环境公有云桌面移动化办公

在线全文

学校读者我要写书评

暂无评论

聚类混合型数据的密度峰值改进算法

计算机工程与应用 2020年第12期56卷 47-53页

作者：谭阳唐德权曹守富湖南师范大学数学与统计学院长沙410081 湖南广播电视大学网络技术系长沙410004 湖南警察学院信息技术系长沙410138

聚类混合型数据,通常是依据样本属性类别的不同分别进行评价。但这种将样本属性划分到不同子空间中分别度量的方式,割裂了样本属性原有的统一性;导致对样本个体的相似性评价产生了非一致的度量偏差。针对这一问题,提出以二进制编码样本... 详细信息

聚类混合型数据,通常是依据样本属性类别的不同分别进行评价。但这种将样本属性划分到不同子空间中分别度量的方式,割裂了样本属性原有的统一性;导致对样本个体的相似性评价产生了非一致的度量偏差。针对这一问题,提出以二进制编码样本属性,再由海明差异对属性编码施行统一度量的新的聚类算法。新算法通过在统一的框架内对混合型数据实施相似性度量,避免了对样本属性的切割,在此基础上又根据不同属性的性质赋予其不同的权重,并以此评价样本个体之间的相似程度。实验结果表明,新算法能够有效地聚类混合型数据;与已有的其他聚类算法相比较,表现出更好的聚类准确率及稳定性。

关键词：聚类混合型数据密度峰值属性编码海明度量

基于超球形模糊支配的高维多目标粒子群优化算法

在线全文

学校读者我要写书评

暂无评论

计算机应用 2019年第11期39卷 3233-3241页

作者：谭阳唐德权曹守富湖南师范大学数学与统计学院长沙410081 湖南广播电视大学网络技术系长沙410004 湖南警察学院信息技术系长沙410138

高维多目标优化问题(MAOP)会随着待优化问题维度的增加形成巨大的目标空间,导致在目标空间中非支配解的比例急剧增加,削弱了进化算法的选择压力,降低了进化算法对MAOP的求解效率。针对这一问题,提出一种以超球型支配关系降低种群中非支... 详细信息

高维多目标优化问题(MAOP)会随着待优化问题维度的增加形成巨大的目标空间,导致在目标空间中非支配解的比例急剧增加,削弱了进化算法的选择压力,降低了进化算法对MAOP的求解效率。针对这一问题,提出一种以超球型支配关系降低种群中非支配解数量的粒子群优化(PSO)算法。算法以模糊支配策略来维持种群对MAOP的选择压力,并通过全局极值的选择和外部档案的维护来保持种群个体在目标空间中的分布。在标准测试集DTLZ和WFG上的仿真结果表明,所提算法在求解MAOP时具备较优的收敛性和分布性。

关键词：高维多目标优化问题 Pareto支配粒子群多样性

S掺杂Fe-NC单原子催化剂氧还原机理研究

在线全文

学校读者我要写书评

暂无评论

化学学报 2020年第9期78卷 1001-1006页

作者：鲁效庆曹守福魏晓飞李邵仁魏淑贤中国石油大学材料科学与工程学院青岛266580

杂原子掺杂的Fe-NC催化剂在氧还原反应中表现出优异的性能.本工作采用密度泛函理论研究了S原子掺杂对Fe-NC单原子催化剂电子结构的调控及促进氧还原反应的作用机理,分析了硫原子掺杂后Fe-NC催化剂的稳定构型, S原子对FeN4活性位点电子... 详细信息

杂原子掺杂的Fe-NC催化剂在氧还原反应中表现出优异的性能.本工作采用密度泛函理论研究了S原子掺杂对Fe-NC单原子催化剂电子结构的调控及促进氧还原反应的作用机理,分析了硫原子掺杂后Fe-NC催化剂的稳定构型, S原子对FeN4活性位点电子结构的调控,以及氧气的吸附和氧还原反应作用机理.研究结果表明,在FeN4活性位点周围掺杂少量S原子,可以提高催化剂的稳定性. S原子掺杂提高氧还原性能的机理为:(1) S原子的掺杂降低了催化剂的带隙,提高催化剂导电性,有利于电催化氧还原反应;(2) S原子的掺杂可以提高催化剂吸附氧气的能力,有利于氧还原反应;(3)体系中引入四个S原子可以降低氧还原反应的过电位,提高FeN4位点催化氧还原反应的活性.这项工作可能为基于碳材料的单原子催化剂上杂原子掺杂的调控提供新的思路.

关键词： Fe-NC催化剂杂原子掺杂氧还原反应密度泛函理论

在线全文

学校读者我要写书评

暂无评论

高校科研课题申报及评审系统设计

信息技术与信息化 2021年第4期 69-71页

作者：曹守富湖南广播电视大学教育信息技术中心湖南长沙410004

针对科研课题申报及评审过程中的实际问题,基于.NET开发平台,采用成熟的Web前端框架及组件技术,利用微信公众平台接口功能,实现了科研课题申报及评审系统,将申报及专家评审过程转移到线上实现。系统改善了课题申报及评审过程体验,提高... 详细信息

针对科研课题申报及评审过程中的实际问题,基于.NET开发平台,采用成熟的Web前端框架及组件技术,利用微信公众平台接口功能,实现了科研课题申报及评审系统,将申报及专家评审过程转移到线上实现。系统改善了课题申报及评审过程体验,提高了工作效率,评审结果统计准确、高效。

关键词：课题申报系统评审系统在线评审高校课题