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Nano Research 2022年第8期15卷 7008-7015页

作者： Chongjing Liu Beibei Sheng Quan Zhou Dengfeng Cao honghe ding Shuangming Chen Pengjun Zhang Yujian Xia Xiaojun Wu Li Song National Synchrotron Radiation Laboratory CAS Center for Excellence in NanoscienceUniversity of Science and Technology of ChinaHefei 230029China Institute of Energy Hefei Comprehensive Nation Science CenterHefei 230031China Hefei National Laboratory for Physical Sciences at the Microscales Department of Materials Sciences and EngineeringUniversity of Science and Technology of ChinaHefei 230026China

The electrocatalysis of oxygen evolution reaction(OER)plays a key role in clean energy storage and ***,the sluggish kinetics and poor durability under acidic and neutral conditions severely hinder practical applications such as electrolyzer compatible with the powerful proton exchange membrane and biohybrid fuel ***,we report a borondoped ruthenium dioxide electrocatalyst(B-RuO_(2))fabricated by a facile boric acid assisted strategy which demonstrates excellent acidic and neutral OER *** functional theory calculations and advanced characterizations reveal that the boron species form an anomalous B–O covalent bonding with the oxygen atoms of RuO_(2)and expose the fully coordinately bridge ruthenium site(Ru-bri site),which seems like a switch that turns on the inactive Ru-bri site into OER-active,resulting in more exposed active sites,modified electronic structure,and optimized binding energy of ***,the B-RuO_(2)exhibits an ultralow overpotential of 200 mV at 10 mA/cm^(2)and maintains excellent stability compared to commercial RuO_(2)in 0.5 M sulfuric ***,the superior performance is as well displayed in neutral electrolyte,surpassing most previously reported catalysts.

关键词： acidic and neutral oxygen evolution reaction RuO_(2) boron doping the fully coordinately bridge ruthenium site(Ru-bri site) density functional theory

Unraveling the advantages of Pd/CeO_(2)single-atom catalysts in the NO+CO reaction by model catalysts

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Nano Research 2023年第7期16卷 8882-8892页

作者： Qian Xu Xingwang Cheng Ningqiang Zhang Yi Tu Lihui Wu Haibin Pan Jun Hu honghe ding Junfa Zhu Yadong Li Department of Chemistry Tsinghua UniversityBeijing 100084China National Synchrotron Radiation Laboratory University of Science and Technology of ChinaHefei 230029China College of Chemistry and Materials Science Anhui Normal UniversityWuhu 241002China

Selective catalytic reduction of NO by CO is challenging in environmental catalysis but attractive owing to the advantage of simultaneous elimination of NO and ***,model catalysts consisting of Pd nanoparticles(NPs)and single-atom Pd supported on a CeO_(2)(111)film grown on Cu(111)(denoted as Pd NPs/CeO_(2)and Pd_(1)/CeO_(2),respectively)were successfully prepared and characterized by synchrotron radiation photoemission spectroscopy(SRPES)and infrared reflection absorption spectroscopy(IRAS).The NO+CO adsorption/reaction on the Pd_(1)/CeO_(2)and Pd NPs/CeO_(2)catalysts were carefully investigated using SRPES,temperature-programmed desorption(TPD),and *** is found that the reaction products on both model catalysts are in good agreement with those on real catalysts,demonstrating the good reliability of using these model catalysts to study the reaction mechanism of the NO+CO *** the Pd NPs/CeO_(2)surface,N_(2)is formed by the combination of atomic N coming from the dissociation of NO on Pd NPs at higher temperatures.N_(2)O formation occurs probably via chemisorbed NO combined with atomic N on the *** on the single-atom Pd_(1)/CeO_(2)surface,no N_(2)O is *** 100%N_(2)selectivity may stem from the formation of O-N-N-O^(*)intermediate on the *** this study,direct experimental evidence for the reaction mechanisms of the NO+CO reaction is provided,which supports the previous density functional theory(DFT)calculations.

关键词： NO+CO reaction Pd/CeO_(2) model catalysts reaction mechanisms

An in-situ spectroscopy investigation of alkali metal interaction mechanism with the imide functional group

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Nano Research 2020年第12期13卷 3224-3229页

作者： Xu Lian Zhirui Ma Zhonghan Zhang Jinlin Yang Shuo Sun Chengding Gu Yuan Liu honghe ding Jun Hu Xu Cao Junfa Zhu Shuzhou Li Wei Chen Department of Chemistry National University of SingaporeSingapore117543Singapore Centre for Advanced 2D Materials National University of SingaporeSingapore117546Singapore School of Materials Science and Engineering Nanyang Technological UniversitySingapore639798Singapore National University of Singapore(Suzhou)Research Institute Suzhou215123China Joint School of National University of Singapore and Tianjin University International Campus of Tianjin UniversityFuzhou350207China National Synchrotron Radiation Laboratory Department of Chemical PhysicsUniversity of Science and Technology of ChinaHefei230029China Department of Physics National University of SingaporeSingapore117542Singapore

Organic anode materials have attracted considerable interest owing to their high tunability by adopting various active functional ***,the interaction mechanisms between the alkali metals and the active functional groups in host materials have been rarely studied ***,a widely used organic semiconductor of perylene-3,4,9,10-tetracarboxylic diimide(PTCDI)was selected as a model system to investigate how alkali metals interact with imide functional groups and induce changes in chemical and electronic structures of *** interaction at the alkali/PTCDI interface was probed by in-situ X-ray photoelectron spectroscopy(XPS),ultraviolet photoelectron spectroscopy(UPS),synchrotron-based near edge X-ray absorption fine structure(NEXAFS),and corroborated by density functional theory(DFT)*** results indicate that the alkali metal replaces the hydrogen atoms in the imide group and interact with the imide nitrogen of *** transfer induced gap states and downward band-bending like effects are identified on the alkali-deposited PTCDI *** was found that Na shows a stronger electron transfer effect than *** a model study of alkali insertion/intercalation in PTCDI gives insights for the exploration of the potential host materials for alkali storage applications.

关键词： perylene-3,4,9,10-tetracarboxylic diimide(PTCDI) lithium storage organic anode imide electron transfer

合成新型氰基修饰的富勒烯衍生物降低介电失配实现高效反式钙钛矿太阳能电池

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Science China Materials 2023年第6期66卷 2146-2158页

作者：贾凌波马鑫波向文灏江小芬丁红鹤李行成商研渤朱俊发李震宇邱永福陈木青陈江照杨上峰 Hefei National Laboratory for Physical Sciences at Microscale CAS Key Laboratory of Materials for Energy ConversionAnhui Laboratory of Advanced Photon Science and TechnologyDepartment of Materials Science and EngineeringUniversity of Science and Technology of ChinaHefei 230026China School of Environment and Civil Engineering Dongguan University of TechnologyDongguan 523808China Hefei National Laboratory for Physical Sciences at the Microscale University of Science and Technology of ChinaHefei 230026China National Synchrotron Radiation Laboratory University of Science and Technology of ChinaHefei 230029China Key Laboratory of Optoelectronic Technology&Systems(Ministry of Education) College of Optoelectronic EngineeringChongqing UniversityChongqing 400044China

富勒烯衍生物,尤其是[1,1]苯基-C_(61)-丁酸-甲酯(PC_(61)BM),通常用作反式(p-i-n)钙钛矿太阳能电池(PVKSCs)的电子传输层和添加剂,但PC_(61)BM(3.8)的介电常数(ε_(r))远小于有机无机杂化铅卤钙钛矿(CH_(3)NH_(3)PbI_(3)[MAPbI_(3)]为6.5)的介电常数,不利于激子的解离且阻碍了界面电荷的传输.本文中,我们合成了一种新的氰基功能化富勒烯,其中两个氰基通过罗丹宁连接到富勒烯上(缩写为C_(60)-Rhd-CN),并通过反溶剂法将其引入MAPbI_(3)活性层中来构建反式钙钛矿太阳能电池器件.引入强吸电子氰基后,C_(60)-Rhd-CN的ε_(r)值达到5.1,明显高于PC_(61)BM(3.8),因此可以有效降低MAPbI_(3)钙钛矿和富勒烯电子传输层之间的介电失配.此外,氰基能够与MAPbI_(3)钙钛矿中的Pb^(2+)离子进行配位实现钙钛矿的缺陷钝化.最终,C_(60)-Rhd-CN掺入钙钛矿后促进了激子解离和界面电荷传输,并抑制了非辐射复合,使反式钙钛矿太阳能电池器件的能量转换效率从参比器件的18.43%显著提高到20.81%.此外,掺入C_(60)-Rhd-CN有助于提高钙钛矿太阳能电池的环境和热稳定性.为了阐明氰基在增加ε_(r)值和提高效率方面的关键作用,我们还合成了另一种类似结构的新型罗丹宁官能化富勒烯,其中两个氰基被硫原子取代(缩写为C_(60)-Rhd-S),其获得的能量转换效率为19.45%,其性能低于含有C_(60)-Rhd-CN添加剂的钙钛矿太阳能电池的主要原因是其ε_(r)值(4.0)较低.

关键词：钙钛矿太阳能电池能量转换效率富勒烯衍生物介电常数电子传输层非辐射复合失配硫原子

计划行为理论视域下医师职业行为形成机制与教育策略的研究与启示

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中华医学教育杂志 2024年第5期44卷 325-329页

作者：辛春雨丁宁李鸿鹤闻德亮中国医科大学国际医学教育研究院课程与教学研究室沈阳110122 中国医科大学国际医学教育研究院教育技术研究室沈阳110122 中国医科大学国际医学教育研究院沈阳110122

医师的职业行为对于医疗服务质量和患者健康至关重要,是继续医学教育的重要关注点。深入探究医师职业行为背后的主观决策机制,是理解和预测职业行为的关键所在。计划行为理论作为广泛应用且验证有效的理论框架,为职业行为研究拓展了视... 详细信息

医师的职业行为对于医疗服务质量和患者健康至关重要,是继续医学教育的重要关注点。深入探究医师职业行为背后的主观决策机制,是理解和预测职业行为的关键所在。计划行为理论作为广泛应用且验证有效的理论框架,为职业行为研究拓展了视野。本文在系统梳理国内外相关研究的基础上,运用计划行为理论,基于态度、主观规范和知觉行为控制3个模块,剖析职业行为的影响因素和形成机制。研究表明,医师对于职业行为能否改善患者健康的评估,患者及其家属施加的社会压力,以及医师自身的专业知识技能和对职业行为过程的控制能力,均对医师职业行为产生重要影响。基于此,总结了医师职业行为的教育策略,旨在为未来医师职业行为的继续医学教育提供理论和实践依据。

关键词：医师计划行为理论职业行为形成机制教育策略

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涉数据犯罪的刑法规制完善探析

红河学院学报 2024年第1期22卷 92-97页

作者：孟念丁华宇河南财经政法大学刑事司法学院河南郑州450046

数字经济时代,数据成为核心生产要素,数据以其独有的形式重塑着市场交易模式。作为新的经济发展引擎,数据安全也日益获得社会关注,而我国刑法对数据犯罪的规制过多依附于计算机信息系统犯罪、信息犯罪,司法解释也无法弥补立法漏洞。由... 详细信息

数字经济时代,数据成为核心生产要素,数据以其独有的形式重塑着市场交易模式。作为新的经济发展引擎,数据安全也日益获得社会关注,而我国刑法对数据犯罪的规制过多依附于计算机信息系统犯罪、信息犯罪,司法解释也无法弥补立法漏洞。由于数据法益的独立性,加之数据犯罪的严重侵害性、保护一般数据安全的必要性,同时涉及保障前置法有效实行的需要,对数据犯罪独立规制成为理论界和司法实务界不可回避的话题。为有效规制数据犯罪,保障数据安全,首先,必须建立数据法益独立保护的刑法模式,对数据犯罪的行为方式完整规制;其次,应确立客观的入罪标准,建立数据分级分类保护制度,同时以罪量要素限制刑罚权的滥用;最后,应通过建立企业数据刑事合规制度有效化解企业的刑事风险,促进企业健康可持续发展。

关键词：数据犯罪刑法规制法益完善路径

基于ADAMS的茶叶平面圆筛机筛分装置的仿真分析

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农业装备与车辆工程 2024年第6期62卷 23-28页

作者：丁志威高继武红河职业技术学院建筑工程学院云南蒙自661100

为研究四轴平面圆筛机筛分运动特性,通过UG三维建模软件和ADAMS多体动力学分析软件,对一种四轴平面圆筛机的运行轨迹和载荷变化情况进行仿真分析。通过仿真分析结果可知,平面圆筛机在运行过程中筛床质心的运动轨迹、速度和加速度随时间... 详细信息

为研究四轴平面圆筛机筛分运动特性,通过UG三维建模软件和ADAMS多体动力学分析软件,对一种四轴平面圆筛机的运行轨迹和载荷变化情况进行仿真分析。通过仿真分析结果可知,平面圆筛机在运行过程中筛床质心的运动轨迹、速度和加速度随时间变化的曲线;平面圆筛机的扇形平衡块装配位置与曲柄两轴线形成的平面夹角为0°时,平面圆筛机的机架与地面基础在X-Y平面的动载荷波动最小为-574.9~581.6 N,机架对地面基础的振动较小,随着扇形平衡块装配位置夹角的增大,机架与地面基础的动载荷波动也随之增大;扇形平衡块装配位置的夹角为0°时,平面圆筛机在启动阶段和稳定运行阶段,曲柄上的动载荷波动平稳,有利于平面圆筛机的稳定运行,减少平面圆筛机曲柄上轴承的磨损。可为平面圆筛机的设计及改进提供参考和借鉴。

关键词：平面圆筛机 ADAMS仿真分析轨迹分析载荷分析

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煤矿可伸缩带式运煤输送机传动装置的设计

机械管理开发 2024年第10期39卷 111-113页

作者：高继武丁志威曹军磊红河职业技术学院荆门市格林美新材料有限公司

针对带式运煤输送机的传动装置关键部件,以安全高效为目标,在固定式带式输送机上追加了传送带卷绕装置、存储装置和可伸缩尾部。根据已知的原始数据和工作条件,计算电机的功率,最终选择2台YBS40-4S隔爆型三相异步电动机。设计的减速器... 详细信息

针对带式运煤输送机的传动装置关键部件,以安全高效为目标,在固定式带式输送机上追加了传送带卷绕装置、存储装置和可伸缩尾部。根据已知的原始数据和工作条件,计算电机的功率,最终选择2台YBS40-4S隔爆型三相异步电动机。设计的减速器采用三级齿轮传动,第一组采用弧齿锥齿轮传动副,齿数Z1=11、Z2=29,模数m=7.75;第二组采用圆柱斜齿轮传动副,齿数Z1=17、Z2=54,模数m=5;第三组采用圆柱齿轮传动副,齿数Z1=15、Z2=44,模数m=7。总传动比i=24.56。该研究为煤矿可伸缩带式运煤输送机传动方案的设计提供了一定的参考。

关键词：可伸缩带式输送机结构形式传动方案减速器

^(40)Ar-^(39)Ar dating of lamprophyre dykes in the Baimazhai nickel deposit,Yunnan Province,China,and its geological significance

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Chinese Journal Of Geochemistry 2008年第4期27卷 351-355页

作者： LI Bo HUANG Zhilong GUAN Yao ding Wei Land and Mineral Resource Engineering College of Kunming University of Science and Technology Kunming 650093 China The Key Laboratory of Ore Deposit Geochemistry Institute of Geochemistry Chinese Academy of Sciences Guiyang 550002 China

The Baimazhai nickel deposit,Yunnan Province,China,is located in the southern part of the Sanjiang (Tri-river) alkali-rich intrusive rock belt (Sanjiang ARIR). In this paper was conducted 40Ar-39Ar dating of two phlogopites in lamprophyres which are,as dikes,widely distributed in the orefield,and two plateau ages were ac-quired,i.e.,32.46±0.62 Ma and 32.01±0.60 Ma,respectively (averaging 32.23±0.60 Ma). The ages are obviously younger than those of the ore-hosted complex and mineralization of the Baimazhai nickel deposit. In combination with the characteristics,it is indicated that lamprophyres in the orefield and those in the Sanjiang ARIR are similar in tectonic setting,mineral assemblage and geochemistry. It is considered that lamprophyres in the orefield are the im-portant component of the Sanjiang ARIR,and the lamprophyres and ore-hosted complex in the orefield represent the products of two times of different magmatic activity from different mantle sources. On the other hand,the age of lamprophyres in the orefield is older than that of the strike-slip shearing of the Ailaoshan-honghe fault belt,sug-gesting that the strike-slip shearing of the Ailaoshan-honghe fault belt is not the factor leading to magmatic activity of lamprophyres in the orefield,while it is more possible that magmatic activity of the Sanjiang ARIR promoted strike-slip shearing of the fault belt.

关键词：煌斑岩年龄测定地质学镍沉淀云南