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Simultaneously enhanced energy storage performance and luminance resistance in (K_(0.5)Na_(0.5))NbO_(3) -based ceramics via synergistic optimization strategy

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Journal of Advanced Ceramics 2024年第1期13卷 34-43页

作者： Yu Huan Diyu Gui Changxiao Li Tao Wei Lingzhi wu Xinjian Wang xiaozhi Wang Zhenxiang Cheng School of Materials Science and Engineering University of JinanJinan 250022China Yangtze Delta Region Transformation Center for Advanced Technological Achievements Suzhou 215000China Electronic Materials Research Laboratory Key Laboratory of the Ministry of Education and International Center for Dielectric ResearchXi’an Jiaotong UniversityXi’an 710032China Institute for Superconducting and Electronic Materials Australian Institute for Innovative MaterialsUniversity of WollongongInnovation CampusNorth Wollongong 2500Australia

The rapidly advancing energy storage performance of dielectric ceramics capacitors has garnered significant interest for applications in fast charge/discharge and high-power electronic techniques.Exploring the exceptional electrical properties in harsh environments can further promote their practical applications.Defect carriers can be excited under luminance irradiation,thereby leading to degradation of energy storage performance.Herein,a synergic optimization strategy is proposed to enhance energy storage properties and luminance resistance of(K_(0.5)Na_(0.5))NbO_(3)-base(KNN)ceramics.First,the introduction of Bi(Zn0.5Ti0.5)O_(3) solid solution and La3+ions disrupts the long-range polar orders and enhances super paraelectric relaxation characteristics.Additionally,doping La3+ions can increase the band gap and reduce oxygen vacancy concentration,resulting in excellent luminance resistance.Finally,the viscous polymer process is employed to suppress the grain growth and promote chemical homogeneity.As a result,ultrahigh recoverable energy storage density(Wrec)of 8.11 J/cm3 and high efficiency(η)of 80.98%are achieved under an electric field of 568 kV/cm.Moreover,the variations in Wrec andηare only 12.45%and 1.75%,respectively,under 500 W xenon lamp irradiation compared to the performance under a dark environment.These findings hold great potential in facilitating the practical application of dielectric ceramic capacitors in luminance irradiation environments.

关键词： potassium-sodium niobate energy storage performance illumination resistance oxygen vacancy viscous polymer processing

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Enhanced photocatalytic performance of Bi_(2)O_(2)CO_(3)/Bi_(4)O_(5)Br_(2)/reduced graphene oxide Z-schemehe terojunction via a one-pot room-temperature synthesis

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Journal of Environmental Sciences 2024年第4期138卷 418-427页

作者： Xiaoge wu Lei Yan Rongrong Qin Qikai Zhang Wei Yang xiaozhi Wang Yongcai Zhang Min Luo Jianhua Hou College of Environmental Science and Engineering Yangzhou UniversityYangzhouJiangsu 225009China Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization Nanjing 210095China Beijing Xinfeng Aerospace Equipment Co. Ltd.Beijing 100854China Beijing System Design Institute of Electro-Mechanic Engineering Beijing 100005China College of Chemistry and Chemical Engineering Ningxia UniversityYinchuanNingxia 750021China

Bi_(2)O_(2)CO_(3)(BOC)/Bi_(4)O_5Br_(2)(BOB)/reduced graphene oxide(rGO)Z-scheme heterojunction with promising photocatalytic properties was synthesized via a facile one-pot room-temperature method.Ultra-thin nanosheets of BOC and BOB were grown in situ on r GO.The formed 2D/2D direct Z-scheme heterojunction of BOC/BOB with oxygen vacancies(OVs)effectively leads to lower negative electron reduction potential of BOB as well as higher positive hole oxidation potential of BOC,showing improved reduction/oxidation ability.Particularly,rGO is an acceptor of the electrons from the conduction band of BOC.Its dual roles significantly improve the transfer performance of photo-induced charge carriers and accelerate their separation.With layered nanosheet structure,rich OVs,high specific surface area,and increased utilization efficiency of visible light,the multiple synergistic effects of BOC/BOB/rGO can achieve effective generation and separation of the electron-holes,thereby generating more·O_(2)^(-)and h^(+).The photocatalytic reduction efficiency of CO_(2)to CO(12.91μmol/(g·hr))is three times higher than that of BOC(4.18μmol/(g·hr)).Moreover,it also achieved almost 100%removal of Rhodamine B and cyanobacterial cells within 2 hours.

关键词： Bi_(2)O_(2)CO_(3) Bi_(4)O_(5)Br_(2) Reduced graphene oxide Z-scheme heterojunction Photocatalysis CO_(2)reduction

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Towards growth of pure AB-stacked bilayer graphene single crystals

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Nano Research 2024年第5期17卷 4616-4621页

作者： Xiaowen Zhang Tao Zhou Yunlong Ren Zuo Feng Ruixi Qiao Qinghe Wang Bin Wang Jinxia Bai Muhong wu Zhilie Tang Xu Zhou Kaihui Liu xiaozhi Xu Guangdong Basic Research Center of Excellence for Structure and Fundamental Interactions of Matter Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum MaterialsSchool of PhysicsSouth China Normal UniversityGuangzhou 510006China Guangdong-Hong Kong Joint Laboratory of Quantum Matter School of PhysicsSouth China Normal UniversityGuangzhou 510006China Physical Science and Engineering Division King Abdullah University of Science and TechnologyThuwal 23955–6900Saudi Arabia State Key Laboratory for Mesoscopic Physics Frontiers Science Center for Nano-optoelectronicsSchool of PhysicsPeking UniversityBeijing 100871China Institute for Frontier Science Nanjing University of Aeronautics and AstronauticsNanjing 210094China International Centre for Quantum Materials Collaborative Innovation Centre of Quantum MatterPeking UniversityBeijing 100871China Songshan Lake Materials Laboratory Institute of PhysicsChinese Academy of SciencesDongguan 523808China

Given its intriguing band structure and unique tunable bandgap,AB-stacked bilayer graphene has great potentials in the applications of high-end electronics,optoelectronics and semiconductors.The epitaxial growth of AB-stacked single-crystal bilayer graphene films requires a strict AB-stacked lattice,identical orientations and seamless stitching of bilayer graphene islands.However,the particles inevitably present on the metal surface that produced during high temperature growth would induce random orientations,twisted stacking islands,and uncontrollable multilayers,which is a great challenge to overcome.Here,we propose a heat-resisting-box assisted strategy to produce nearly pure AB-stacked bilayer graphene single-crystal films on Cu/Ni(111)foils.With our technique,the particles on the Cu/Ni(111)surface are effectively eliminated,which greatly minimizes the occurrence of randomly twisted islands and uncontrollable multilayers.The as-grown AB-stacked bilayer graphene films show>99%alignment and>99%AB stacking order.Our work provides a promising method towards the growth of pure AB-stacked bilayer graphene single crystals and would accelerate its device applications.

关键词： bilayer graphene AB stacking uniform growth heat-resisting box

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基于去伪加权方差最小化算法的大型复杂零部件局部配准全局方法研究

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中国科学：技术科学 2024年第3期54卷 422-442页

作者：吴浩冯晓志华林朱大虎湖北隆中实验室襄阳441000 武汉理工大学现代汽车零部件技术湖北省重点实验室武汉430070 武汉理工大学汽车零部件技术湖北省协同创新中心武汉430070

以汽车飞轮壳、车身为典型代表的大型复杂零部件机器人加工质量高度依赖于测量技术.针对现有点云配准算法难以抑制由于结构偏差、余量分布不均和各种测量固有缺陷所引起的匹配偏差问题,本文围绕局部配准定位全局的思路,提出一种去伪加... 详细信息

以汽车飞轮壳、车身为典型代表的大型复杂零部件机器人加工质量高度依赖于测量技术.针对现有点云配准算法难以抑制由于结构偏差、余量分布不均和各种测量固有缺陷所引起的匹配偏差问题,本文围绕局部配准定位全局的思路,提出一种去伪加权方差最小化(DPWVM)算法用于点云精配准.建立自适应比例因子调节的权重函数,区分结构偏差点云和其他异常点云,从而对每个点对距离施加合理权重,以降低结构偏差点云对配准精度的影响.进一步,统一点到点距离和点到面距离,建立自适应协调距离,以提升算法收敛稳定性.本文所提算法在汽车飞轮壳局部配准定位全局的过程中可有效提高配准精度并抑制匹配倾斜,相比于ICP、VMM算法,绝对定位精度分别提升18.9%和66.7%,匹配倾斜抑制程度分别提升25.9%和85.3%,与WPMAVM算法相比,收敛稳定性进一步提高.此外,本文所提方法仅需单次数据采集即可有效配准定位,极大地提高了配准效率.

关键词：去伪加权方差最小化大型复杂零部件局部配准匹配失真自适应协调距离

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ON CORE STRUCTURE PROPERTIES AND PEIERLS STRESS OF DISSOCIATED SUPERDISLOCATIONS IN ALUMINIDES:NiAl AND FeAl

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Acta Mechanica Solida Sinica 2010年第3期23卷 213-219页

作者： xiaozhi wu Shaofeng Wang Congbo Li Institute .for Structure and Function Chongqing University Chongqing 400044 China State Key Laboratory of Mechanical Transmission Chongqing University Chongqing 400044 China

The study of dislocation properties in B2 structure intermetallics NiAl and FeAl is crucial to understand their mechanical behaviors. In this paper, the core structure and Peierls stress of collinear dissociated （111）{110} edge superdislocations in NiAl and FeAl are investigated with the modified P-N dislocation equation. The generalized stacking fault energy curve along （111） direction in {110} slip plane contains two modification factors that can assure the antiphase energy and the unstable stacking fault energy to change independently. The results show that the core width of superpartials decreases with the increasing unstable stacking fault energy, and increases with the increasing antiphase boundary energy. The calculated Peierls stress of （111）{ 110） edge superdislocations in NiAl and FeAl are 475 MPa and 3042 MPa, respectively. The values of Peierls stress in NiAl is in accordance in magnitude with the experimental and the molecular statics simulations results.

关键词： core structure Peierls stress NiAl FeAl

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Characteristics of Volcanic Reservoirs and Hydrocarbon Accumulation of Carboniferous System in Junggar Basin, China

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Journal of Earth Science 2021年第4期32卷 972-985页

作者： xiaozhi wu Qiulin Guo Wei Zhang Dengfa He Xuefeng Qi Di Li Research Institute of Petroleum Exploration&Development PetroChinaBeijing 100083China School of Earth and Space Sciences Peking UniversityBeijing 100871China School of Energy Resources China University of GeosciencesBeijing 100083China

The Carboniferous volcanic reservoirs in Junggar Basin contain rich hydrocarbon resources,implying a great exploration potential,so that they have become a key replacement target for“three-dimensional exploration”.The study on the Carboniferous volcanic reservoirs and their hydrocarbon accumulation elements is significant for clarifying the orientation for exploration.In this paper,based on 37 reserves reports and 3200 reservoir test data,the Carboniferous volcanic reservoirs in Junggar Basin were discussed from the prospective of lithology and lithofacies,physical properties,reservoir types,main controls on hydrocarbon accumulation,and hydrocarbon accumulation patterns.It is found that the Carboniferous in the basin is mostly in the multi-island ocean-volcanic island arc structural-sedimentary environment,so it is geologically eligible for forming in-situ volcanic reservoirs.The volcanic rocks are:(1)mostly distributed along deep and large faults,with the lithology and lithofacies controlled by volcanic architectures;(2)dominantly lava,followed by volcaniclastic lava and volcaniclastic rock;(3)distributed in the periphery of hydrocarbon-generating sag and within the source rocks horizontally,and concentrated in the weathering crust at the top longitudinally,possibly leading to reworked weathering crust reservoir;and(4)liable to form inner reservoirs.The volcanic reservoirs can be concluded into four hydrocarbon accumulation patterns,i.e.,self-generating&self-storing in paleo-uplift and vertical migration,self-generating&self-storing in paleo-uplift and lateral migration,young-generating&old-storing in fault zone and vertical migration,and young-generating&old-storing in paleo-uplift and lateral migration.Future exploration will focus on the effective source rock development and hydrocarbon supply zones and the selfgenerating&self-storing and young-generating&old-storing patterns.The exploration prospects are determined to be the Ludong-wucaiwan-Baijiahai slope belt and the southern slope belt of the Shaqi uplift

关键词： Carboniferous volcanic reservoir volcanic rock reservoir characteristic hydrocarbon accumulation lithology and lithofacies Junggar Basin

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New advances in the assessment of tight oil resource in China

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Petroleum Research 2017年第1期2卷 1-12页

作者： Shejiao Wang Yuanjiang Yu Qiulin Guo Shaoyong Wang xiaozhi wu PetroChina Research Institute of Petroleum Exploration and Development Beijing 100083China

The research on tight oil becomes another hotspot in the field of unconventional oil and gas after the boom of shale gas.The global recoverable resources of tight oil are estimated to be around 47.3×10^(9)t.In recent years,significant progress has been made in the technologies of tight oil exploration and development in North America,thus stimulating the dramatic increase of tight oil production.Meanwhile,China has also acquired remarkable achievements in tight oil exploration.Mature assessment methods have been established for tight oil resources by the US,generally dominated by analogy and statistical methods with their own advantages and disadvantages as well as applicable conditions.In China,improvement of resource evaluation techniques becomes an urgent issue in increasing tight oil reserve and production.This study mainly discusses the resource evaluation methods and resource enrichment characteristics of tight oil.Seven kinds of assessment methods in three categories(i.e.,analogy,statistical and genetic method)and evaluation parameters have been preliminary established,and are specifically applied in the Sichuan,Ordos,Songliao,Junggar,Bohai Bay and other tight oil basins through the newly hierarchical resource abundance analogy method,the estimated ultimate recovery(EUR)analogy method and the small-cell volumetric method.The preliminary evaluation results reveal that China has great potential in tight oil resource,and the geological resources amount to 20×10^(9)t,providing a resource base for large-scale development.

关键词： Unconventional oil and gas Resource assessment method Resource potential Resource enrichment characteristics Tight oil

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壳源氦气成藏主控因素及资源评价方法研究

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地学前缘 2024年第1期31卷 340-350页

作者：吴义平王青陶士振王建君李谦张宁宁吴晓智李浩武王晓波中国石油勘探开发研究院北京100083

当前国内外尚无系统的氦气资源评价方法以及针对性的参数取值标准。通过天然气和氦气的成藏要素对比,明确了载体气和壳源氦气的异源同储、同源同储和同源异储3类共生关系,以及壳源氦气成藏的8个关键因素。构建了4类10种氦气资源分级分... 详细信息

当前国内外尚无系统的氦气资源评价方法以及针对性的参数取值标准。通过天然气和氦气的成藏要素对比,明确了载体气和壳源氦气的异源同储、同源同储和同源异储3类共生关系,以及壳源氦气成藏的8个关键因素。构建了4类10种氦气资源分级分类评价方法,其中含量法包括5个亚类,统计法包括1个亚类,类比法包括3个亚类,成因法1个亚类,初步解决了氦气资源定量计算的难题。结果表明:高氦气含量的气藏一般为常压及低压气藏,氦气含量与氦源岩类型、铀钍含量和氦源岩规模3个参数呈正向关系,而与离主断裂距离、埋深和生烃强度3个参数呈负相关,适度的基底构造活动有利于氦气释放及富集。基于8类氦气成藏主控因素与氦气含量的定量关系,建立了氦气含量类比法。基于异源同储不同序的原理,构建了氦气资源规模序列法;基于放射性元素衰变释氦机理,建立了氦气成因法。氦气资源评价方法在国内外得到了较为广泛的应用,研究成果将为我国氦气储量规模发现提供了有效支撑。

关键词：载体气共生关系氦气含量生氦法规模序列资源评价

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山东省废旧纺织品循环利用产业发展现状及建议

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中国纤检 2024年第5期 42-44页

作者：王小志杨超武镜山东省纤维质量监测中心山东济南250021

山东省作为一个纺织品生产销售大省,有大量的废旧纺织品纤维下脚料及废旧纤维制品。如何实现废旧纺织品循环利用利益最大化,从而发展成为有着广阔市场空间、光明发展前景的优质产业,是行业亟须探索的课题。山东省纤维质量监测中心组织... 详细信息

山东省作为一个纺织品生产销售大省,有大量的废旧纺织品纤维下脚料及废旧纤维制品。如何实现废旧纺织品循环利用利益最大化,从而发展成为有着广阔市场空间、光明发展前景的优质产业,是行业亟须探索的课题。山东省纤维质量监测中心组织专题调研组,随机到潍坊昌邑石埠镇、临沂平邑仲村镇等废旧纺织品再加工纤维生产企业、使用单位开展现场调研,了解企业废旧纺织品再加工纤维质量状况,梳理问题意见,集思广益,形成推动全省产业升级高质量发展的“纤监答案”。

关键词：废旧纺织品调研循环利用质量提升绿色低碳政策标准

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Recent advances in bacterial therapeutics based on sense and response

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Acta Pharmaceutica Sinica B 2023年第3期13卷 1014-1027页

作者： Zhuo Feng Yuchen Wang Haiheng Xu Yunfei Guo Wen Xia Chenxuan Zhao xiaozhi Zhao Jinhui wu State Key Laboratory of Pharmaceutical Biotechnology Chemistry and Biomedicine Innovation CenterMedical School of Nanjing UniversityNanjing 210093China Jiangsu Key Laboratory for Nano Technology Nanjing UniversityNanjing 210093China Department of Andrology Drum Tower HospitalMedical School of Nanjing UniversityNanjing 210093China

Intelligent drug delivery is a promising strategy for cancer therapies.In recent years,with the rapid development of synthetic biology,some properties of bacteria,such as gene operability,excellent tumor colonization ability,and host-independent structure,make them ideal intelligent drug carriers and have attracted extensive attention.By implanting condition-responsive elements or gene circuits into bacteria,they can synthesize or release drugs by sensing stimuli.Therefore,compared with traditional drug delivery,the usage of bacteria for drug loading has better targeting ability and controllability,and can cope with the complex delivery environment of the body to achieve the intelligent delivery of drugs.This review mainly introduces the development of bacterial-based drug delivery carriers,including mechanisms of bacterial targeting to tumor colonization,gene deletions or mutations,environment-responsive elements,and gene circuits.Meanwhile,we summarize the challenges and prospects faced by bacteria in clinical research,and hope to provide ideas for clinical translation.

关键词： Cancer therapy Bacterial drug delivery system Synthetic biology Responsive elements Gene circuits Intelligential delivery

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