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海外基层党建“点线面”工作新机制——基于中国路桥塞内加尔公司党建实践

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理论学习与探索 2024年第1期 21-23页

作者：孙文明中国路桥工程有限责任公司北京100011

2023年是习近平总书记提出“一带一路”倡议10周年,在第三届“一带一路”国际合作高峰论坛上,习近平总书记发表了主旨演讲,宣布中国支持高质量共建“一带一路”的八项行动,推动共建“一带一路”进入高质量发展的新阶段。中国路桥工程有... 详细信息

2023年是习近平总书记提出“一带一路”倡议10周年,在第三届“一带一路”国际合作高峰论坛上,习近平总书记发表了主旨演讲,宣布中国支持高质量共建“一带一路”的八项行动,推动共建“一带一路”进入高质量发展的新阶段。中国路桥工程有限责任公司(以下简称“中国路桥”)作为“一带一路”倡议的先行者,其在非洲的塞内加尔公司(以下简称“公司”)深入落实中非合作“九项工程”,以海外基层党建为战斗堡垒.

关键词：基层党建战斗堡垒中非合作主旨演讲一带一路塞内加尔党建实践点线面

铸态Cu-1.16Ni-0.36Cr合金热变形行为及热加工图

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材料导报 2024年第2期38卷 220-227页

作者：孙文明李韶林宋克兴王强松丁宗业朱莹莹河南科技大学材料科学与工程学院河南洛阳471023 河南科技大学河南省有色金属材料科学与加工技术重点实验室河南洛阳471023 河南省科学院郑州450052 有研科技集团有限公司有色金属材料制备加工国家重点实验室北京100088 有研工程技术研究院有限公司北京101407 佛山科学技术学院机电工程与自动化学院广东佛山528225

利用Gleeble-1500型热模拟试验机,研究了Cu-1.16Ni-0.36Cr合金在变形量为50%、变形温度为750~950℃、变形速率为0.01~10 s^(-1)下的热压缩变形行为,建立该合金热变形的本构方程和热加工图。结果表明:Cu-1.16Ni-0.36Cr合金在700~900℃的... 详细信息

利用Gleeble-1500型热模拟试验机,研究了Cu-1.16Ni-0.36Cr合金在变形量为50%、变形温度为750~950℃、变形速率为0.01~10 s^(-1)下的热压缩变形行为,建立该合金热变形的本构方程和热加工图。结果表明:Cu-1.16Ni-0.36Cr合金在700~900℃的变形温度下以动态回复为主,在950℃下发生完全的动态再结晶。通过真应力应变曲线得到了该合金热变形的本构方程和热加工图。根据应变对流变应力的影响对本构方程进行修正,通过修正后的回归方程对流变应力进行模拟,模拟结果与实验结果吻合。热加工图表明,该合金适宜的热变形工艺参数为900~950℃和0.1~1 s^(-1),其中950℃和1 s^(-1)变形条件下组织状态最佳,为晶粒细小均匀的等轴晶。

关键词： Cu-Ni-Cr合金热压缩变形本构方程热加工图动态再结晶

Interplay between invasive single atom Pt and native oxygen vacancy in rutile TiO_(2)(110)surface:A theoretical study

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Nano Research 2022年第1期15卷 669-676页

作者： Xiaoyang Wang Liang Zhang Yuxiang Bu wenming sun Department of Chemistry China Agricultural UniversityBeijing 100193China Dassault Systemes(Shanghai)Information Technology Co. Ltd.Shanghai 200120China Department of Chemistry Shandong UniversityJinan 250100China

Oxygen vacancy(O_(v))as well as Ov migration in metal oxide are of great importance in structural evolution of active center in single-atom catalysts(SACs).Here,the interplay between invasive single Pt atom and native O_(v) in SA-Pt/rutile TiO_(2)(110)surface,as well as their synergetic effect on water dissociation are investigated by density functional theory(DFT)*** show that importing Pt atom as Pt-ads,Pt_(2c),Pt_(5c) and Pt6c modes could decelerate the O_(v) migration effectively,especially in Pt6c *** oxygen-rich conditions,Pt6c substitution could make oxygen Ov formation easier,but migration *** Pt_(6c)/Ti_(1-y)O_(2-x1)(110)surface,as a bimetal center,Pt_(4c)-Ti_(5c) concave could not make water dissociation process easier;however,the O2c closed to Pt become a good proton acceptor to make water dissociation on Ti_(5c)-O_(2c) more convenient with the aid of topmost Ti_(5c).

关键词： oxygen vacancy migration rutile TiO_(2) single-atom catalysts density functional theory

“传统文化+互联网思维”视域下经管类课程思政改革实践研究

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西安文理学院学报（社会科学版） 2024年第1期27卷 22-27页

作者：孙文明姚艳杰杜娟安徽开放大学经济与管理学院合肥230022 安徽开放大学文法与教育学院合肥230022

随着现代教育理念的优化发展,高校经管类专业更加重视课程思政改革工作的开展,以期更加充分地发挥出经管类课程的育人功能和价值。基于此,在简要解读“课程思政”的基础上,从必要性、基本内容和育人目标三方面对经管类课程思政改革的思... 详细信息

随着现代教育理念的优化发展,高校经管类专业更加重视课程思政改革工作的开展,以期更加充分地发挥出经管类课程的育人功能和价值。基于此,在简要解读“课程思政”的基础上,从必要性、基本内容和育人目标三方面对经管类课程思政改革的思路进行梳理,并基于传统文化传承观念与互联网思维,对高校经管类课程的思政改革实践策略进行探讨和总结,以供参考。

关键词：传统文化互联网思维经管类课程课程思政

碱熔-电感耦合等离子体质谱法测定铍矿石中的铍和锡

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岩矿测试 2024年第5期43卷 783-792页

作者：常学东杜晶孙文明徐国强阿米娜·胡吉董瑞瑞中国地质调查局乌鲁木齐自然资源综合调查中心新疆乌鲁木齐830057

稀有金属矿物组成复杂,且矿物成分多样化,现有质谱方法对铍的测定以地质样品中或矿石样品中的低含量铍分析为主,也很少应用于分析铍矿石中伴生的难溶锡元素。本文以新疆大红柳滩高品位铍矿石并伴生较高含量锡元素的样品为研究对象,建立... 详细信息

稀有金属矿物组成复杂,且矿物成分多样化,现有质谱方法对铍的测定以地质样品中或矿石样品中的低含量铍分析为主,也很少应用于分析铍矿石中伴生的难溶锡元素。本文以新疆大红柳滩高品位铍矿石并伴生较高含量锡元素的样品为研究对象,建立了铍矿石中难溶元素铍和锡同时测定的方法。利用高温熔融态过氧化钠强的复分解能力,将矿物中的坚固晶格破坏,使目标物转换为易溶盐被提取,通过10倍稀释降低样品基体盐分含量,保证长期测量的稳定性RSD低于5%,并对校准曲线进行基体匹配,以电感耦合等离子体质谱(ICP-MS)测定,铍和锡在5~2000ng/mL浓度范围内线性关系良好,相关系数均大于0.999,检出限为铍0.20μg/g、锡0.17μg/g;测量精密度高(RSD≤5%),测量上限为氧化铍5.6%,锡2%。本文方法线性范围宽,适合各种高品位铍矿石中铍和锡的分析。将建立的方法应用于分析新疆大红柳滩高品位铍矿等多金属稀有金属矿,氧化铍含量达到0.85%、锡含量达到0.078%的样品测量精密度良好;还适用于分析铍矿石中其他稀有元素锂铷铯铌钽和稀土元素。

关键词：碱熔铍矿石铍锡电感耦合等离子体质谱法

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Rational design of graphyne-based dual-atom site catalysts for CO oxidation

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Nano Research 2023年第1期16卷 343-351页

作者： Zhenwei Zhang Liang Zhang Xiaoyang Wang Yuan Feng Xiangwen Liu wenming sun Department of Chemistry Beijing Key Laboratory for Optical Materials and Photonic DevicesCapital Normal UniversityBeijing 100048China Linyi Vocational University of Science and Technology(Linyi Institute of Industrial Technology) Linyi 276000China Dassault Systemes(Shanghai)Information Technology Co. Ltd.Shanghai 200120China Institute of Analysis and Testing Beijing Academy of Science and Technology(Beijing Center for Physical and Chemical Analysis)Beijing 100094China TianHe Supercomputing Center of Huaihai Linyi 276000China

There are increasing concerns about the environmental impact of rising atmospheric carbon monoxide concentrations,thus it is necessary to develop new catalysts for efficient CO *** on first-principles calculations,the potential ofγ-graphyne(GY)as substrate for metals in the 4th and 5th periods under single-atom and dual-atoms concentration modes has been systematically *** was found that single-atom Co,Ir,Rh,and Ru could effectively oxidate CO molecules,especially for single ***,proper atoms concentration could boost the CO oxidation activity by supplying more reaction centers,such as Rh^(2)/*** was determined that two Rh atoms in Rh^(2)/GY act different roles in the catalytic reaction:one structural and another *** tests suggest that substituting the structural Rh atom in the center of acetylenic ring by Co or Cu atom is a possible way to maintain the reaction performance while reducing the noble metal *** systemic investigation will help in understanding the fundamental reaction mechanisms on GY-based *** emphasize that properly exposed frontier orbital of functional metal atom is crucial in adsorption configuration as well as entire catalytic *** study constructs a workflow and provides valuable information for rational design of CO oxidation catalysts.

关键词： density functional theory calculations CO oxidation single-atom catalyst graphyne dual-atom site catalyst

Cobalt diselenide (001) surface with short-range Co-Co interaction triggering high-performance electrocatalytic oxygen evolution

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Nano Research 2021年第12期14卷 4848-4856页

作者： Kun Dang Shihao Zhang Xuewei Wang wenming sun Ligang Wang Yang Tian Sihui Zhan Department of Chemistry Analytical Instrumentation CenterBeijing Key Laboratory for Optical Materials and Photonic DevicesCapital Normal UniversityBeijing100048China MOE Key Laboratory of Pollution Processes and Environmental Criteria Tianjin Key Laboratory of Environmental Remediation and Pollution ControlCollege of Environmental Science and EngineeringNankai UniversityTianjin300350China College of Science China Agricultural UniversityBeijing100193China Beijing National Laboratory for Molecular Sciences(BNLMS) College of Chemistry and Molecular EngineeringPeking UniversityBeijing100871China

Oxygen evolution reaction (OER) still suffers from the bottleneck in electrocatalytic water splitting. Herein, in virtue of volcano plots drawn by theoretical calculation, the (001) facet was screened as the superb facet of orthorhombic CoSe_(2) for OER. Afterwards, CoSe_(2)(001) nanosheets were synthesized and the exposure ratio of (001) facet is controllable with thermodynamics methods effectively. The single-facet CoSe2(001) delivered an overpotential as low as 240 mV at 10 mA·cm^(−2) in 1 M KOH, which outperformed the bulk (380 mV) as well as other CoSe_(2)-base OER catalysts reported before. Especially, a shorter Co-Co path was observed in CoSe_(2)(001) by X-ray absorption spectroscopy. Further density functional theory (DFT) studies revealed that the reversible compression on the shorter Co-Co path could regulate the electronic structure of active sites during the OER process, and thus the energy barrier of the rate-determining step was reduced by 0.15 eV. This work could inspire more insights on the modification of electronic structure for OER electrocatalysts.

关键词： CoSe2 oxygen evolution reaction(OER) water-splitting electrocatalysis crystal facet engineering electronic structure manipulation

Ultra-long room temperature phosphorescence of indium-based organic inorganic metal halides for naked-eye-visible afterglow

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中国科学:化学英文版 2023年第9期66卷 2576-2582页

作者： Heng Yu Hao Gong Zhaorui Hua Yang Zhang wenming sun Shuyan Gong Ganglong Cui Yang Tian Hongbing Fu Beijing Key Laboratory for Optical Materials and Photonic Devices Department of ChemistryCapital Normal UniversityBeijing 100048China Key Laboratory of Theoretical and Computational Photochemistry Ministry of EducationCollege of ChemistryBeijing Normal UniversityBeijing 100875China

Solid-state molecules based on room-temperature phosphorescent(RTP)emission have received extensive attention due to their special optical properties of triplet ***,there are still few solid molecular systems with naked-eye-visible afterglow ***,we introduce 4-phenylbenzylamine(namely PBA)with a long conjugated system into common non-toxic In^(3+)to form an indium-based organic inorganic halide,whose chemical formula is PBA_(3)[InCl_6]·H_(2)***,this hybrid halide generates a RTP emission at 617 nm with a lifetime decay as long as 290.4 ms,expressing a naked-eye-visible afterglow for more than 7 *** mechanism study shows that the long lifetime RTP originated from the specific lamellar stacking of organic molecules and metal halide units,facilitating the interaction between the inorganic layers and organic ***,the material can be potentially used in emergency lighting,information security,and other ***,this work provides a reference for the design and implementation of a more efficient organic-inorganic hybrid system with the ultralong RTP emission.

关键词： phosphorescence indium 4-phenylbenzylamine halide afterglow

Cobalt single atom site catalysts with ultrahigh metal loading for enhanced aerobic oxidation of ethylbenzene

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Nano Research 2021年第7期14卷 2418-2423页

作者： Yu Xiong wenming sun Yunhu Han Pingyu Xin Xusheng Zheng Wensheng Yan Juncai Dong Jian Zhang Dingsheng Wang Yadong Li Department of Chemistry and Chemical Engineering Central South UniversityChangsha 410083China Department of Chemistry Tsinghua UniversityBeijing 100084China China College of Science China Agricultural UniversityBeijing 100193China Institute of Flexible Electronics Northwestern Polytechnical UniversityXi’an 710072China National Synchrotron Radiation Laboratory University of Science and Technology of ChinaHefei 230029China Beijing Synchrotron Radiation Facility Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100084China

The oxidation of hydrocarbons to produce high value-added compounds(ketones or alcohols)using oxygen in air as the only oxidant is an efficient synthetic strategy from both environmental and economic ***,we successfully synthesized cobalt single atom site catalysts(Co SACs)with high metal loading of 23.58 wt.%supported on carbon nitride(CN),which showed excellent catalytic properties for oxidation of ethylbenzene in ***,Co SACs show a much higher turn-over frequency(19.6 h^(−1))than other reported non-noble catalysts under the same ***,the as-obtained nanosized or homogenous Co catalysts are inert to this *** SACs also exhibit high selectivity(97%)and stability(unchanged after five runs)in this *** calculations reveal that Co SACs show a low energy barrier in the first elementary step and a high resistance to water,which result in the robust catalytic performance for this reaction.

关键词： single atom site high-loading catalysts heterogeneous catalysts ethylbenzene oxidation