检索结果-内蒙古大学图书馆

In-situ neutron-transmutation for substitutional doping in 2D layered indium selenide based phototransistor

eLight 2022年第1期2卷 112-120页

作者： Zhinan Guo Yonghong Zeng Fanxu Meng Hengze Qu Shengli Zhang Shipeng Hu Sidi Fan Haibo Zeng Rui Cao Paras N.Prasad Dianyuan Fan Han Zhang Institute of Microscale Optoelectronics International Collaborative Laboratory of 2D Materials for Optoelectronics Science and TechnologyCollege of Physics and Optoelectronic EngineeringShenzhen UniversityShenzhen 518060China MIIT Key Laboratory of Advanced Display Materials and Devices College of Material Science and EngineeringNanjing University of Science and TechnologyNanjing 210094China Institute for Lasers Photonicsand Biophotonics and Department of ChemistryUniversity at BuffaloThe State University of New YorkBuffaloNY 14260USA

Neutron-transmutation doping(NTD)has been demonstrated for the first time in this work for substitutional introduction of tin(Sn)shallow donors into two-dimensional(2D)layered indium selenide(InSe)to manipulate electron transfer and charge carrier *** study including density functional theory,transient optical absorption,and FET devices have been carried out to reveal that the field effect electron mobility of the fabricated phototransistor is increased 100-fold due to the smaller electron effective mass and longer electron life time in the Sn-doped *** responsivity of the Sn-doped InSe based phototransistor is accordingly enhanced by about 50 times,being as high as 397 A/*** results show that NTD is a highly effective and controllable doping method,possessing good compatibility with the semiconductor manufacturing process,even after device fabrication,and can be carried out without introducing any contamination,which is radically different from traditional doping methods.

关键词： Neutron-transmutation doping Substitutional doping Two-dimensional materials Phototransistor

来源：评论

学校读者我要写书评

暂无评论

Fatigue of Li metal anode in solid-state batteries

引用

Science (new York, N.Y.) 2025年第6744期388卷 311-316页

作者： Tengrui Wang Bo Chen Yijie Liu Zhenyou Song Zhongqiang Wang Yuwei Chen Qian Yu Jiayun Wen Yiming Dai Qi Kang Fei Pei Rong Xu Wei Luo Yunhui Huang Institute of New Energy for Vehicles School of Materials Science and Engineering Tongji University Shanghai China. School of Electrical Engineering Southwest Jiaotong University Chengdu China. State Key Laboratory of Material Processing and Die & Mould Technology School of Materials Science and Engineering Huazhong University of Science and Technology Wuhan Hubei China. State Key Laboratory for Strength and Vibration of Mechanical Structures Department of Engineering Mechanics Xi'an Jiaotong University Xi'an China.

Solid-state lithium metal batteries (SSBs) are promising for electric vehicles because of their potential to provide high energy density and enhanced safety. However, these batteries face short-circuit challenges caused by uncontrolled lithium dendrite growth during cycling. Using operando scanning electron microscopy and phase-field simulations, we determined that failure of SSBs is closely linked to the fatigue of the lithium metal anode, which markedly contributes to interface degradation and dendrite growth in SSBs. This fatigue follows the Coffin-Manson equation in mechanics, indicating that it is an innate characteristic. Clarifying the essential role of fatigue provides a physical basis for understanding failures of SSBs and paves the way to extending their lifespan.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Efficient Promotion of Cr(Vi) Removal Over Bi2s3 Nanostructure Assisted with Cupric Ions: Potential Applications in Electroplating Wastewater and Contaminated Groundwater

SSRN

引用

SSRN 2022年

作者： Tao, Xiong Chen, Fengxi Li, Jun Liu, Yun-Ling Hu, Xiaowu Chen, Rong State Key Laboratory of New Textile Materials & Advanced Processing Technologies Wuhan Textile University Wuhan430200 China School of Chemistry and Environmental Engineering Wuhan Institute of Technology Wuhan430205 China Henan Institute of Advanced Technology Zhengzhou University Zhengzhou450002 China State Key Laboratory of Inorganic Synthesis and Preparative Chemistry Jilin University Jilin130012 China

Emerging Bi2S3 -based nanotechnology has great potential in Cr(VI)-contaminated wastewater treatment. In this work, it was found for the first time that Bi2S3 nanostructure (BS-D) prepared from dual sulfur sources of L-cysteine and ammonium sulfide efficiently promoted Cr(VI) removal with excellent selectivity for simultaneous removal of Cr(VI) and Cu2+ from aqueous solutions containing various co-existing ions (including Na+, K+, Ca2+, Zn2+, Ni2+, Cd2+, NO3-, SO42- and Cl- ) at pH > 3, preferably at pH = 4.5. Besides, BS-D exhibited stable performance for the co-removal of Cr(VI) and Cu2+ in five recycling tests. Kinetic and thermodynamic studies indicated that the adsorption of Cr(VI) or Cu2+ by BS-D was a spontaneous endothermic process and conformed to pseudo-second-order kinetic model. The adsorbed Cr(VI) ions were partially reduced to Cr(III), which were leached into the solution at pH ≤ 3, inhibiting the adsorption of Cu2+ on BS-D and its promotional effect on Cr(VI) removal by BS-D. The mutual promotional effects of Cu2+ and Cr(VI) could be attributed to electrostatic attraction between HCrO4- and Cu2+ and smaller pH variation of Cr(VI)-Cu2+ mixed solution during their co-removal by BS-D. Finally, potential applications of BS-D were demonstrated by co-removal of Cr(VI) and Cu2+ from two real water matrixes (electroplating wastewater and contaminated groundwater). This work provided a promising BS-D adsorbent for Cr(VI)-contaminated wastewater treatment, and shed insight on the influence of Cu2+ on the Cr(VI) removal by BS-D. © 2022, The Authors. All rights reserved.

关键词： Adsorption

来源：评论

学校读者我要写书评

暂无评论

Aligned fibrin/functionalized self-assembling peptide interpenetrating nanofiber hydrogel presenting multi-cues promotes peripheral nerve functional recovery

引用

Bioactive materials 2022年第2期7卷 529-544页

作者： Shuhui Yang Jinjin Zhu Changfeng Lu Yi Chai Zheng Cao Jiaju Lu Zhe Zhang He Zhao Yin-Yuan Huang Shenglian Yao Xiangdong Kong Peixun Zhang Xiumei Wang State Key Laboratory of New Ceramics and Fine Processing Key Laboratory of Advanced Materials of Ministry of EducationSchool of Materials Science and EngineeringTsinghua UniversityBeijing100084PR China Key Laboratory of Trauma and Neural Regeneration Peking UniversityMinistry of EducationDepartment of Trauma and OrthopedicsPeking University People’s HospitalBeijing100044PR China Department of Orthopaedic Surgery Sir Run Run Shaw HospitalZhejiang University School of Medicine&Key Laboratory of Musculoskeletal System Degeneration and Regeneration Translational Research of ZhejiangHangzhou310016PR China School of Clinical Medicine Tsinghua UniversityBeijing100084PR China School of Materials Science and Engineering University of Science and Technology BeijingBeijing100083PR China School of Materials Science and Engineering Zhejiang-Mauritius Joint Research Center for Biomaterials and Tissue EngineeringZhejiang Sci-Tech UniversityHangzhou310018PR China

Nerve guidance conduits with hollow lumen fail to regenerate critical-sized peripheral nerve defects(15 mm in rats and 25 mm in humans),which can be improved by a beneficial intraluminal ***,individual cues provided by intraluminal filling materials are inadequate to eliminate the functional gap between regenerated nerves and normal ***,an aligned fibrin/functionalized self-assembling peptide(AFG/fSAP)interpenetrating nanofiber hydrogel that exerting synergistic topographical and biochemical cues for peripheral nerve regeneration is constructed via electrospinning and molecular *** hydrogel possesses an aligned structure,high water content,appropriate mechanical properties and suitable biodegradation capabilities for nerve repair,which enhances the alignment and neurotrophin secretion of primary Schwann cells(SCs)in vitro,and successfully bridges a 15-mm sciatic nerve gap in rats in *** rats transplanted with the AFG/fSAP hydrogel exhibit satisfactory morphological and functional recovery in myelinated nerve fibers and innervated *** motor function recovery facilitated by the AFG/fSAP hydrogel is comparable with that of ***,the AFG/fSAP hydrogel upregulates the regeneration-associated gene expression and activates the PI3K/Akt and MAPK signaling pathways in the regenerated ***,the AFG/fSAP hydrogel represents a promising approach for peripheral nerve repair through an integration of structural guidance and biochemical stimulation.

关键词： Peripheral nerve regeneration Alignment Nanofibers Fibrin Self-assembling peptides

来源：评论

学校读者我要写书评

暂无评论

一步秒级制备超薄多孔Janus膜及其在防水透气电子皮肤的应用（英文）

引用

Science Bulletin 2025年第5期 712-721页

作者：倪宇峰李兵储成臻王少凡贾宇杰曹诗春 Rasoul Esmaeely Neisiany 何创龙陈硕游正伟 State Key Laboratory of Advanced Fiber Materials Institute of Functional Materials College of Materials Science and Engineering Research Base of Textile Materials for Flexible Electronics and Biomedical Applications (China Textile Engineering Society) Shanghai Engineering Research Center of Nano-Biomaterials and Regenerative Medicine Shanghai Key Laboratory of Lightweight Composite Donghua University College of Biological Science and Medical Engineering Donghua University Department of Materials and Polymer Engineering Faculty of Engineering Hakim Sabzevari University Biotechnology Centre Silesian University of Technology

It remains a challenge for a simple and scalable method to fabricate ultrathin porous Janus membranes for stretchable on-skin ***,we propose a one-step droplet spreading phase separation strategy to prepare an ultrathin and easily collected Janus thermoplastic polyurethane （TPU） membrane within *** metal-ion solvation structure mitigated migration kinetics to delay TPU solution demixing,promoting the further penetration of the coagulating ***,the developed membranes,with an average preparation rate of 25.2 cm2s-1,had a thickness of 5μm,and the water vapor transmission rate was determined to be 663 *** small pore layer having an average pore size of 1.7μm effectively blocked external liquid *** porous Janus TPU membrane coated by liquid metal served as a building block to develop a new generation of monolithic stretchable electronics with simultaneous high permeability and waterproofness.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Microwave-assisted acid-induced formation of linker vacancies within Zr-based metal organic frameworks with enhanced heterogeneous catalysis

引用

Chinese Chemical Letters 2021年第2期32卷 787-790页

作者： Yu Liang Chenhui Li Lanjun Chen Jia Huo Mohammed Loubidi Yangyang Zhou Yanbo Liu State Key Laboratory of Chem/Bio-sensing and Chemometrics College of Chemistry and Chemical Engineering.Hunan UniversityChangsha 410082China Hunan Provincial Key Laboratory of Advanced Materials for New Energy Storage and Conversion.Hunan University of Science and Technology Xiangtan 411201China

Herein,we report a microwave-assisted acid-induced post-treatment method for the formation of linker vacancies within Zr-based metal organic frameworks(Zr-MOFs).The number of linker vacancies can be easily regulated with this method by changing the concentration of the HCl solution and the duration of microwave *** optimized defective UiO-66 showed higher linker defects with a higher specific surface area and thermal *** results of the catalytic cyclization of citronella showed that the Zr-MOFs with more defects exhibited enhanced catalytic *** work may provide a new method for the creation of defective MOFs with high activity and stability.

关键词： Metal-organic frameworks Microwave Acid etching Linker vacancy Stability Heterogeneous catalysis

来源：评论

学校读者我要写书评

暂无评论

How do we improve the reproducibility and accuracy of EIS and Tafel testing in corrosion science?

引用

Surface Science and technology 2025年第1期3卷 1-22页

作者： Shao, Zexi Ma, Mingyuan Liu, Xuhui Yuan, Sicheng Lin, Dan Bai, Ziheng Hu, Haodong Yu, Jingtai Du, Yafei Zhu, Yanji Wang, Huaiyuan School of Chemical Engineering and Technology and State Key Laboratory for Chemical Engineering Tianjin University Tianjin P.R. China Tianjin Key Laboratory of Chemical Process Safety and Equipment Technology Tianjin University Tianjin P.R. China School of Materials Science and Engineering Northeastern University Shenyang China School of Materials and New Energy Ningxia University Yinchuan P.R. China Institute for Advanced Materials and Technology National Materials Corrosion and Protection Scientific Data Center University of Science and Technology Beijing Beijing China

Electrochemical is crucial in corrosion, energy storage, and electrocatalysts and are essential for mitigating carbon emissions. However, deviations in electrochemical testing can result from experiment errors and electrode preparation differences. Therefore, electrochemical experiment results are required to assess the reproducibility. Herein we found that the surface resistance is a key factor of electrochemical testing, and the difference of surface resistance could inform future anode oxidation devices, and enhance the reproducibility and accuracy of electrochemical testing.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Oxygen vacancy migration and its lattice structural origin in A-site non-stoichiometric bismuth sodium titanate perovskites

引用

Journal of Materiomics 2022年第3期8卷 719-729页

作者： Jing Shi Xiao Liu Fangyuan Zhu Wenchao Tian Yuanhua Xia Tangyuan Li Rongrong Rao Tao Zhang Laijun Liu Key Laboratory of Electronic Equipment Structure Design(MOE) School of Mechano-Electronic EngineeringXidian UniversityXi'an710071China School of Materials Science and Engineering Xi'an University of Science and TechnologyXi'an710054China Shanghai Synchrotron Radiation Facility Shanghai Advanced Research InstituteChinese Academy of SciencesShanghai201204China Institute of Nuclear Physics and Chemistry China Academy of Engineering PhysicsMianyang621900China Frontier Institute of Science and Technology Xi'an Jiaotong UniversityXi'an710049China College of Science Xi'an University of Science and TechnologyXi'an710054China Key Laboratory of Nonferrous Materials and New Processing Technology(MOE) College of Materials Science and EngineeringGuilin University of TechnologyGuilin541004China

Off-stoichiometry of perovskite structural Bi0.5Na0.5TiO3(BNT)ferroelectrics can give rise to considerable oxide-ion *** inherent structural characteristics are urgent to be resolved due to its particular sensitivity of the conduction mechanism to the nominal composition and synthesis ***,a thorough study of the temperature-dependent neutron,X-ray diffraction and Raman spectrum is carried out on a series of equivalently substituted A-site deficient non-stoichiometric and pristine *** transition and defect association are systemically investigated in these dominated rhombohedral phases at room temperature,associated with well saturated ferroelectric *** structural evolution identified by Rietveld refinements and the origin of the electrical performance are clarified at elevated temperatures,focusing on the subtle distortions of ionic displacements,oxygen octahedral tilts and local chemical environments for oxygen *** ion migration ability mediated by oxygen vacancies that are not energetically favorable in BNT mainly depends on the external substitutional disorder,and is strongly affected by the dopant *** with the lone pair substitution concept,superior oxide ionic conductivity is achieved,and an alternative strategy is provided in designing BNT based oxide ion conductors.

关键词： Ferroelectrics Bismuth sodium titanate Oxide ion conductors Neutron powder diffraction Oxygen vacancy

来源：评论

学校读者我要写书评

暂无评论

Improving the Formability and Mechanical Properties of Tial Alloy by Direct Forging of Uncondensed Powder

SSRN

引用

SSRN 2023年

作者： Lu, Fangyuan Fan, Xiaoguang Liang, Yongfeng Li, Shuangbiao State Key Laboratory of Solidification Processing School of Materials Science and Engineering Northwestern Polytechnical University Xi’an710072 China Key Laboratory of High Performance Manufacturing for Aero Engine Northwestern Polytechnical University Ministry of Industry and Information Technology China State Key Laboratory for Advanced Metals and Materials University of Science and Technology Beijing Beijing100083 China

The low plasticity and poor formability of TiAl alloys are one of the key factors limiting their applications. In this regard, a new processing route is proposed which is characterized by direct forging of loose-packed pre-alloyed powders in the α-phase region. It actively exploits defects and their evolution to improve formability and achieve rapid densification. Meanwhile, the large deformation of powders can improve the mechanical properties of the TiAl alloy. Experimental work and numerical simulation have been carried out to investigate the deformation behavior and microstructure evolution in direct forging of pre-alloyed Ti-48Al-2Cr-2Nb powder. The results show that the forging of α single-phase zone can achieve full densification in a very short time, and the process mainly includes three stages: particle clustering and rearrangement, particle plastic deformation and fragmentation, and high temperature diffusion and creep. The microstructure is mainly composed of α2+γ lamellae and bulk γ after forging in the α single-phase zone followed by air cooling. The forged alloy has a homogeneous microstructure and fine lamellae (the lamellae cluster size is only 40 μm), and the strength and elongation are significantly improved compared with the as-cast alloy. © 2023, The Authors. All rights reserved.

关键词： Powders

来源：评论

学校读者我要写书评

暂无评论

Microwave-Pulse Sugar-Blowing Assisted Synthesis of 2d Transition Metal Carbides for Sustainable Hydrogen Evolution

SSRN

引用

SSRN 2022年

作者： Hu, Rong Jiang, Huiyu Xian, Jinglin Mi, Shiyun Wei, Liyun Fang, Guangyu Guo, Jiayue Xu, Siqi Liu, Ziyang Jin, Huanyu Xu, Weilin Wan, Jun State Key Laboratory of New Textile Materials and Advanced Processing Technologies Hubei Key Laboratory of Biomass Fibers and Eco-Dyeing & Finishing Wuhan Textile University Wuhan430200 China Institute for Sustainability Energy and Resources The University of Adelaide AdelaideSA5005 Australia

Electrocatalytic hydrogen evolution reaction (HER) is crucial to clean fuel production. Two-dimensional transition metal carbides (2D TMCs) are promising in HER electrocatalysts by their excellent intrinsic catalytic activity. However, the synthesis of 2D TMCs requires long-term high-temperature conditions or rigorous etching processes. Here we achieved an ultra-fast and facile synthesis of ultra-thin carbon-terminated 2D TMCs via a microwave-pulse sugar-blowing method. A series of 2D TMCs are obtained within only 3 minutes. This method leads to the accurate adjustment of carbon-layer thickness and facilitate the formation of 2D structures. Accordingly, the electrocatalytic HER activity and stability of TMCs are significantly improved. The synthesized 2D W2C with 1 nm carbon-layer thickness shows high HER activity and ultra-long durability (100 h) in both acidic and alkaline electrolytes. Furthermore, the microwave-pulse method is a generic synthesis strategy that is demonstrated by the successful preparation of 2D WC, Mo2C and MoC. © 2022, The Authors. All rights reserved.

关键词： Electrocatalysts

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：