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Progress of organic magnetic materials

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Science China(Physics,Mechanics & Astronomy) 2019年第7期62卷 22-33页

作者： Mengmeng Wei yingcai fan Wei Qin State Key Laboratory of Crystal Materials School of Physics Shandong University School of Information and Electronic Engineering Shandong Technology and Business University

Over the past years, the development of magnetic materials has been intensively explored, both for fundamental research and technological applications. Particularly, several materials with large magnetoresistance effect have received significant *** this study, we provide an analysis of the progress of organic magnetic materials and organic magnetoelectric complexes, thus paving the way for the understanding of organic magnetism and magnetoelectric coupling mechanisms. In addition, this analysis provides us a critical guide for future organic magnetic material design and fabrication.

关键词： organic materials magnetism magnetoelectric coupling effect

Synergistic trifunctional electrocatalysis of pyridinic nitrogen and single transition-metal atoms anchored on pyrazine-modified graphdiyne

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Science Bulletin 2020年第12期65卷 995-1002,M0003页

作者： Siyun Qi Junru Wang Xiaohan Song yingcai fan Weifeng Li Aijun Du Mingwen Zhao School of Physics&State Key Laboratory of Crystal Materials Shandong UniversityJinan 250100China School of Chemistry Physics and Mechanical EngineeringQueensland University of TechnologyGardens Point CampusQLD 4001 BrisbaneAustralia

Multifunctional catalysts that integrate high efficiency hydrogen evolution reaction(HER), oxygen evolution reaction(OER) and oxygen reduction reaction(ORR) catalytic activity in a single material are attractive for unitized regenerative fuel cells and overall water splitting technologies. As the best-known HER and ORR electrocatalysts, Pt and its alloys have only moderate OER activity. Ruthenium and iridium oxides exhibit the highest OER activities but not as active as Pt for HER and ORR. Here, we proposed a general principle for achieving trifunctional electrocatalysis for three reactions in a single material. Using the newly-synthesized pyrazine-modified graphdiyne(PR-GDY) as an example, we demonstrated that the synergistic effect of the pyridinic nitrogen and anchored transition-metal(TM) single atoms renders highly-efficient HER/OER/ORR trifunctional electrocatalytic activity. For the Ni-doped PR-GDY, the overpotentials for HER, OER and ORR can be respectively as low as -0.05, 0.29 and 0.38 V, which are comparable or even superior to the best-known single-functional and bi-functional precious *** computational results offer not only a promising trifunctional electrocatalyst but also a strategy for the design of multifunctional electrocatalysts.

关键词： Trifunctional electrocatalysts Pyrazine-modified graphdiyne(PR-GDY) Single atoms Density-functional theory

Highly-efficient overall water splitting in 2D Janus group-Ⅲ chalcogenide multilayers: the roles of intrinsic electric filed and vacancy defects

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Science Bulletin 2020年第1期65卷 27-34,M0003页

作者： yingcai fan Xikui Ma Junru Wang Xiaohan Song Aizhu Wang Hong Liu Mingwen Zhao School of Physics Shandong UniversityJinan 250100China School of Information and Electronic Engineering Shandong Technology and Business UniversityYantai 264005China Institute for Advanced Interdisciplinary Research University of JinanJinan 250022China State Key Laboratory of Crystal Materials Shandong UniversityJinan 250100China School of Physics and Electrical Engineering Kashgar UniversityKashi 844006China

Two-dimensional(2 D)van der Waals materials have been widely adopted as photocatalysts for water splitting,but the energy conversion efficiency remains *** the basis of first-principles calculations,we demonstrate that the 2 D Janus group-Ⅲchalcogenide multilayers:In Ga XY,M2XY and In GaX2(M=In/Ga;X,Y=S/Se/Te),are promising photocatalysts for highly-efficient overall water *** intrinsic electric field enhances the spatial separations of photogenerated carriers and alters the band alignment,which is more pronounced compared with the Janus *** solar-to-hydrogen(STH)efficiency with the upper limit of 38.5%was predicted in the Janus *** excitingly,the Ga vacancy of In Ga SSe bilayer effectively lowers the overpotentials of hydrogen evolution reaction(HER)and oxygen evolution reaction(OER)to the levels provided solely by the photogenerated *** theoretical results suggest that the 2 D Janus group-III chalcogenide multilayers could be utilized as highly efficient photocatalysts for overall water splitting without the needs of sacrificial reagents.

关键词： Janus group-Ⅲchalcogenides Solar-to-hydrogen efficiency Photocatalytic water splitting Intrinsic electric fields First-principle calculation

Erratum to: Progress of organic magnetic materials [***-Phys. Mech. Astron. 62, 977501(2019)]

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Science China(Physics,Mechanics & Astronomy) 2019年第12期62卷 132-132页

作者： MengMeng Wei yingcai fan Wei Qin School of Physics State Key Laboratory of Crystal MaterialsShandong UniversityJinan 250100China School of Information and Electronic Engineering Shandong Technology and Business UniversityYantai 264005China

In the original publication of this paper[1],the address"State Key Laboratory of Crystal Materials,School of Physics,Shandong University,Jinan 250100,China,,should be changed to"School of Physics,State Key Laboratory of Crystal Materials,Shandong University,Jinan 250100,China".The correct affiliation should be listed as:1 School of Physics,State Key Laboratory of Crystal Materials,Shandong University,Jinan 250100,China;2 School of Information and Electronic Engineering,Sha dong Technology and Business University,Yantai 264005,China.

关键词： China. listed Shandong

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欢喜岭油田提高稠油采收率技术应用实践

中外能源 2009年第7期14卷 52-55页

作者：范英才中油辽河油田公司欢喜岭采油厂辽宁盘锦124114

欢喜岭油田稠油油藏经过20多年开发已进入"两高一低",即高含水、高采出程度和低油汽比的开采阶段,常规蒸汽吞吐开发方式面临诸多矛盾,进一步提高采收率难度大。为此,开展了稠油蒸汽吞吐转换为蒸汽驱、利用水平井技术实现老油田"二次开发... 详细信息

欢喜岭油田稠油油藏经过20多年开发已进入"两高一低",即高含水、高采出程度和低油汽比的开采阶段,常规蒸汽吞吐开发方式面临诸多矛盾,进一步提高采收率难度大。为此,开展了稠油蒸汽吞吐转换为蒸汽驱、利用水平井技术实现老油田"二次开发"及提高稠油吞吐井开发效果配套技术(包括分层注汽、组合注汽、水平井多点注汽、水平井双管注汽、化学辅助吞吐等)的研究与应用。措施实施后,累计增产原油110.6×104t,创经济效益11.7亿元。

关键词：欢喜岭油田稠油采收率开发方式蒸汽驱水平井注汽

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稠油水平井多点注汽技术

中外能源 2010年第10期15卷 57-59页

作者：范英才中国石油辽河油田公司辽宁盘锦124114

欢喜岭采油厂稠油水平井采用常规笼统注汽方式开发,存在水平段动用不均的问题。对常规注汽出汽位置、油层非均质性、蒸汽超覆、汽窜等影响稠油水平井水平段动用不均的因素进行了分析。提出了利用多点注汽设计软件进行计算和模拟井下温... 详细信息

欢喜岭采油厂稠油水平井采用常规笼统注汽方式开发,存在水平段动用不均的问题。对常规注汽出汽位置、油层非均质性、蒸汽超覆、汽窜等影响稠油水平井水平段动用不均的因素进行了分析。提出了利用多点注汽设计软件进行计算和模拟井下温场分布,采取蒸汽伞和配汽阀进行分单元多点注汽的多点注汽技术。介绍了多点注汽技术中管柱结构、配汽阀、蒸汽伞、多点注汽设计软件等关键技术的结构及功能。欢喜岭采油厂现场应用结果表明,多点注汽技术实施后,平均单井增油300t以上,最高单井增产达500t以上,该技术能够改善水平段吸汽剖面,有效改善水平井段动用程度,从而达到提高周期产油量的目的。欢喜岭采油厂欢127-H3井应用多点注汽技术,沿整个水平段设计4个注汽阀,措施后排水期由原来的12d缩短为2d,周期产油由761.3t提高到1282.1t。

关键词：水平井蒸汽吞吐井温剖面蒸汽伞配汽阀多点注汽

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复合段塞堵水技术在欢17块油藏的应用

中外能源 2010年第8期15卷 44-46页

作者：范英才中国石油辽河油田公司欢喜岭采油厂辽宁盘锦124114

欢喜岭油田欢17块兴隆台油层为底水稠油油藏,受边底水影响,在油藏进入中后期开发以后,虽然实施了注灰堵水、避水侧钻等措施,但油井水淹程度不断加剧。通过对欢17块水淹状况、剩余油分布进行研究,确定了堵水实施区域,并应用了复合段塞堵... 详细信息

欢喜岭油田欢17块兴隆台油层为底水稠油油藏,受边底水影响,在油藏进入中后期开发以后,虽然实施了注灰堵水、避水侧钻等措施,但油井水淹程度不断加剧。通过对欢17块水淹状况、剩余油分布进行研究,确定了堵水实施区域,并应用了复合段塞堵水技术。调堵剂为弱凝胶、强凝胶和耐高温封口剂三个段塞组成的深部化学调堵剂。药剂封堵半径设计为15～20m,药剂处理量为600～1200t。调堵剂采用现场配制、连续搅拌、随用随配;施工注入应用了专为注聚合物类堵剂而设计的单柱塞双缸TDB堵水泵。现场应用表明,深部化学调堵剂具有选择性好、可大剂量使用、凝胶强度高、耐高温蒸汽冲刷等特点,满足了欢17块油井堵水需要;复合段塞堵水技术可有效控制欢17块边底水推进速度,实现了区块产量整体上升,累计增油11483t。

关键词：深部化学调堵堵水封堵半径施工工艺

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基于改进粒子群算法的蒸汽驱注采方案优化

石油学报 2014年第1期35卷 114-117,140页

作者：倪红梅刘永建范英才李盼池东北石油大学提高油气采收率教育部重点实验室黑龙江大庆163318 东北石油大学计算机与信息技术学院黑龙江大庆163318 中国石油辽河油田公司辽宁盘锦124010

针对蒸汽驱注采方案优化问题,以累积油汽比为优化目标,建立了以注汽速率、蒸汽干度和注汽压力等为约束条件的蒸汽驱注采方案优化数学模型,采用改进粒子群算法对该模型进行了求解,并优化了蒸汽驱的主要注采参数。改进粒子群算法以进化停... 详细信息

针对蒸汽驱注采方案优化问题,以累积油汽比为优化目标,建立了以注汽速率、蒸汽干度和注汽压力等为约束条件的蒸汽驱注采方案优化数学模型,采用改进粒子群算法对该模型进行了求解,并优化了蒸汽驱的主要注采参数。改进粒子群算法以进化停滞步数为依据,对个体历史最优值和邻域内粒子的最优值实施随机扰动,并且只接受使个体适应度增加的随机扰动操作,使记忆中的最优粒子跳出局部最优解,保证了种群的多样性,提高了算法的精度和稳定性。实例计算证明,该优化模型计算结果准确,优化算法有效。通过该优化方法可快捷准确地进行蒸汽驱动态优化和方案调整,以便于指导蒸汽驱高效运行。

关键词：蒸汽驱注采方案优化粒子群算法随机扰动数学模型

具有直接Z型光催化机制的非金属BC4N/aza-CMP异质双层的光催化固氮性能

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Science China Materials 2023年第11期66卷 4377-4386页

作者：范英才张志华王娟马西奎赵明文 School of Information and Electronic Engineering Shandong Technology and Business UniversityYantai 264005China School of Physics and State Key Laboratory of Crystal Materials Shandong UniversityJinan 250100China

我们设计了一种不含金属的二维双层异质结构BC_(4)N/aza-CMP,该体系可在水溶液中将N2分子通过光催化作用还原为氨.通过密度泛函理论和非绝热分子动力学方法,我们发现该异质结构中的光生载流子遵循直接Z型迁移机制.这将有效分离光生电荷... 详细信息

我们设计了一种不含金属的二维双层异质结构BC_(4)N/aza-CMP,该体系可在水溶液中将N2分子通过光催化作用还原为氨.通过密度泛函理论和非绝热分子动力学方法,我们发现该异质结构中的光生载流子遵循直接Z型迁移机制.这将有效分离光生电荷并使氮还原反应和氧发生反应分别在BC_(4)N层和aza-CMP层上进行,实现反应位点的空间分离.值得一提的是,BC_(4)N上的B原子可以有效吸附N2分子并激活N≡N键,这将降低氮还原反应的过电势并促进随后的质子化进程,且该异质双层具有适宜的带隙和带边位置,能够有效吸收太阳光并提供充足的驱动力来触发氧化还原反应,实现无任何牺牲剂辅助的光催化氨合成.本工作将为直接Z型固氮光催化剂的设计提供重要借鉴,并促进太阳能驱动的氨合成的发展.

关键词： photocatalytic NH3 synthesis direct Z-scheme pho-tocatalyst energy conversion efficiency nonadiabatic molecular dynamics calculations