检索结果-内蒙古大学图书馆

Ultraviolet and Thermal Dual-Curing Assisted Extrusion-Based Additive Manufacturing of Lunar Regolith Simulant for In-Site Construction on the Moon

SSRN

引用

SSRN 2023年

作者： Cui, Qianshun Wang, Tongcai Gu, Guangshuai Zhang, Rihan Zhao, Tingting Huang, Zhifeng Wang, Gong Chen, Fei Technology and Engineering Center of Space Utilization Chinese Academy of Sciences Beijing100094 China University of Chinese Academy of Sciences Beijing100049 China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing International School of Materials Science and Engineering Wuhan University of Technology Wuhan430070 China

The establishment of a lunar base is crucial for lunar studies, resource extraction, and advancement in deep space exploration. Considering the limitations of rocket capacity and Earth-Moon transportation costs, lunar regolith is regarded as the most practical material for lunar base construction. Consequently, the in-situ additive manufacturing technology for simulated lunar regolith has been widely studied in recent years. This paper proposes a novel additive manufacturing approach for lunar regolith simulants. The simulants and several resins were mixed into a high-solid-loading paste, which was suitable for extrusion-based additive manufacturing process. To fully leverage the lunar environment, the feasibility of the ultraviolet (UV) and thermal curing of the resins was first verified, which was followed by the validation of the lunar regolith paste with the solid content of 86 wt.%. After the characterization of the ultraviolet and heat curing properties, the paste was further 3D printed via the extrusion-based device. The extruded paste underwent preliminary curing in a UV environment and was then heated to approximate the daytime lunar conditions, achieving complete curing of the printed component. The cured parts exhibited a compressive strength of 9.83 ± 1.07 MPa, meeting the requirements for infrastructure construction in the low-gravity lunar environment. This work offers significant implications for future in-situ construction on the Moon using extrusion-based lunar regolith additive manufacturing. © 2023, The Authors. All rights reserved.

关键词： 3D printing

来源：评论

学校读者我要写书评

暂无评论

Off-centering effect and crystal symmetry modification lead to high thermoelectric performance in diamondoid Cu_(2)SnSe_(3)

引用

National Science Open 2025年第3期4卷 35-52页

作者： Pengpeng Chen Shulin Bai Yi Wen Yichen Li Zihao Zhao Dezheng Gao Houdong Huang Yixuan Hu Tian Gao Lei Wang Shaoping Zhan Xiang Gao Xianli Su Hongyao Xie Li-Dong Zhao School of Materials Science and Engineering Beihang UniversityBeijing 100191China Center for Bioinspired Science and Technology Hangzhou International Innovation InstituteBeihang UniversityHangzhou 311115China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China Center for High Pressure Science and Technology Advanced Research(HPSTAR) Beijing 100094China

Recently,dimensionless figure of merit(ZT)beyond 1.0 has been demonstrated in diamondoid Cu_(2)SnSe_(3),positioning it as a low-cost and ecofriendly thermoelectric alternative,and sparking intense interest in further optimizing its thermoelectric ***,its intrinsic monoclinic structure and the compact packing of tetrahedral coordination lead to a light valence band and high thermal conductivity,which impede further performance improvement in Cu_(2)SnSe_(3).Thus,developing effective approaches to altering the local structure of Cu_(2)SnSe_(3)is important for further optimizing its thermoelectric ***,we identified and thoroughly investigated the atomic off-centering behavior in Cu_(2)SnSe_(3),and demonstrated the electronic and phonon transport properties of Cu_(2)SnSe_(3)can be significantly enhanced by carefully modifying its monoclinic lattice into a distorted zinc-blende cubic structure via introducing Cd and off-centering Ag *** structure transition leads to band convergence and a reduction in the deformation potential of the material,resulting in a 7-fold enhancement in the density-of-state effective mass and an 85%increase in carrier ***,the off-centering effect results in strong acoustic-optical phonon scattering and an ultra-low lattice thermal conductivity of 0.3 W m^(-1)K^(-1).Consequently,a maximum ZT of 1.3 was obtained at 800 K for the Cu_(1.85)Ag_(0.15)Sn_(0.9)Cd_(0.1)Se_(3).

关键词： thermoelectric crystal structure transition off-centering behavior local symmetry breaking

来源：评论

学校读者我要写书评

暂无评论

Oxygen/Sulfur Atom Exchange Copolymerization of Carbon Disulfide and Propylene Oxide by a Highly Effective Heterogeneous Berlin Green Catalyst

引用

Chemical Research in Chinese Universities 2023年第5期39卷 790-796页

作者： Munir Ullah KHAN Safir Ullah KHAN CAO Xiaohan Muhammad USMAN Muhammad Naeem SHAH Abdul GHAFFAR Muhammad HASSAN ZHANG Chengjian ZHANG Xinghong State Key Laboratory of Motor Vehicle Biofuel Technology International Research Center for X PolymersDepartment of Polymer Science and EngineeringZhejiang UniversityHangzhou 310027P.R.China Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering Shanxi 030013P.R.China Hefei National Laboratory for Physical Science at the Microscale School of Life SciencesUniversity of Science and Technology of ChinaHefei 230027P.R.China Key Laboratory of Macromolecular Synthesis and Functionalization(Ministry of Education) International Research Center for X PolymersDepartment of Polymer Science and EngineeringZhejiang UniversityHangzhou 310027P.R.China College of Information Science and Electronic Engineering Zhejiang UniversityHangzhou 310027P.R.China Advanced Materials Research Center Zhejiang University-University of Illinois at Urbana-Champaign Institute(ZJU-UIUC)Haining 314400P.R.China

In this study,we report that Berlin Green(FeFe-BG)framework exhibits superior performance in the catalytic coupling of carbon disulfide(CS_(2))and propylene oxide(PO)to generate a random copolymer containing thioether,propylene monothiocarbonate and ether *** and sulfur atom exchange was detected in polymeric and cyclic thiocarbonate byproducts and utilized to modulate the copolymerization of CS_(2)and propylene *** coupling of PO and CS_(2)was selective for copolymer formation under various reaction conditions.^(1)H and^(13)C NMR spectroscopy determined two distinct polymer linkages and two cyclic *** number average molecular weights ranged from 6.4 kg/mol to 10.5 kg/mol,with a comparatively low polydispersity of *** CS_(2)/PO molar feed ratio had a significant impact on the O/S exchange process;the ratio of cyclic thiocarbonate byproducts could be efficiently regulated by tuning the CS_(2)molar feed ratio.

关键词： Carbon disulfide Copolymerization Prussian Blue analogue Heterogeneous catalysis Berlin Green

来源：评论

学校读者我要写书评

暂无评论

Pyrolysis of ZIF-Co assisted by a small amount of KNO3: Tuning of Co-CoOx@N, O co-doped carbon hybrid nanostructures for accelerating water splitting

SSRN

引用

SSRN 2024年

作者： Li, Anqi Qian, Xiaoyu Han, Mengyan Li, Zhichun He, Xiaobo Wang, Guofeng Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology School of Petrochemical Engineering Changzhou University Changzhou213164 China State Key Laboratory for Oxo Synthesis and Selective Oxidation Lanzhou Institute of Chemical Physics Chinese Academy of Sciences Lanzhou730000 China

Electrochemical catalytic water splitting is considered as a green and promising technique for hydrogen production, and highly active catalysts toward cathodic hydrogen evolution reaction (HER) and anodic oxygen evolution reaction (OER) are required, especially for bifunctional ones. In this work, the bifunctional catalysts with Co-CoOx@N, O co-doped carbon (NOC) hybrid nanostructures have been prepared via pyrolysis of ZIF-Co with assistance of a small amount of KNO3. KNO3 plays important roles in tuning the inner and outer structures of Co-CoOx@NOC hybrid nanostructures. The proposed SOv, which is defined as the content of oxygen vacancy (Ov) per unit surface area of the inner Co-CoOx nanoparticle, and charge transfer resistance (Rct) are used as the descriptors of inner structures, while hydrophilicity (or contact angle) is applied as the main feature of outer structures. SOv, Rct and hydrophilicity are well tuned by the fed mass of KNO3, and a moderate fed mass is the key to balancing SOv, Rct and hydrophilicity and further is beneficial to accelerating specific activity for both HER and OER. Thus, both HER and OER specific activity is peaked by Co-CoOx@NOC-0.025KNO3 with a moderate fed mass of KNO3 of 0.025 g. This optimal catalyst also has high apparent activity with high HER and OER current densities (≥500 mA cm-2) under low overpotentials, and promotes overall water splitting with high current densities (500 mA cm-2) at a cell voltage of ~1.63 V. © 2024, The Authors. All rights reserved.

关键词： Electrocatalysis

来源：评论

学校读者我要写书评

暂无评论

Insights into crystal growth and morphology evolution mechanism of multi-component carbide: Experiments and first-principles calculations

引用

Journal of materials Science & technology 2026年 240卷 27-34页

作者： Yong Fan Yuyao Chen Jin Wang Lei Gu Kaixuan Zhou Yuanyuan Gong Wei Liu Yonghao Zhao Xiangfa Liu Jinfeng Nie Nano and Heterogeneous Materials Center School of Materials Science and Engineering Nanjing University of Science and Technology Nanjing 210094 China MIIT Key Laboratory of Advanced Metallic and Intermetallic Materials Technology School of Materials Science and Engineering Nanjing University of Science and Technology Nanjing 210094 China State Key Laboratory of Rare Earth Resource Utilization Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun 130022 China School of Materials Science and Engineering Hohai University Changzhou 213200 China Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials Ministry of Education Shandong University Jinan 250061 China

Multi-component transition metal carbides (MTMCs) have garnered significant attention for their outstanding high-temperature stability and versatile properties, which make them ideal candidates for a wide range of industrial applications. However, the underlying mechanisms governing the crystal growth and morphological evolution of MTMCs remain poorly understood, hindering the design of materials with tailored characteristics. In this paper, we employ an in-situ liquid-solid reaction method to synthesize (HfTaZrNbTi)C MTMC powders and explore their crystal growth and morphology evolution. The synthesized (TiZrHfNbTa)C powders exhibit two distinct morphologies: cubic, primarily composed of Ti, Hf, Ta, and Zr with a small amount of Nb, and octahedral, rich in Ti and Ta with minor amounts of Hf, Nb, and Zr. First-principles calculations show that the surface energy of the (100) plane is lower than the (111) plane, leading to the formation of the cubic morphology. The octahedral morphology forms due to decreased mixing entropy and higher theoretical density compared to cubic particles. Our findings provide valuable insights into the crystal growth and morphology evolution mechanisms of high-entropy ceramics, contributing to the rational design of MTMCs with engineered crystal structures for diverse structural and functional applications.

关键词： Multi-component carbide First-principles calculations Crystal growth Morphology evolution mechanism

来源：评论

学校读者我要写书评

暂无评论

Li4-xSbxSn1-xS4 solid solutions for air-stable solid electrolytes

引用

Journal of Energy Chemistry 2020年第2期29卷 171-176页

作者： Zhuoran Zhang Jianxing Zhang Yulong Sun Huanhuan Jia Linfeng Peng Yunyang Zhang Jia Xie State Key Laboratory of Advanced Electromagnetic Engineering and Technology School of Electrical and Electronic EngineeringWuhan 430074HubeiChina State Key Laboratory of Materials Processing and Die & Mould Technology School of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhan 430074HubeiChina

The sulfide solid electrolytes have the characteristics of high ionic conductivity and low grain boundary resistance, which make them suitable for bulk-type all-solid-state batteries. However, most of them suffer from poor stability in air. Here, we explore the air stable sulfide solid electrolytes in Li4-xSbxSn1-xS4 system. The solid solutions of Li4-xSbxSn1-xS4(0 ≤ x ≤ 0.5) can be formed in Li4-xSbxSn1-xS4 system. Li3.8 Sb0.2 Sn0.8 S4 achieves the highest ionic conductivity of 3.5 × 10-4 S cm-1 in this system,which is 5 times as that of Li4 Sn S4 and 3 orders of magnitude higher than that of Li3 Sb S4, respectively. Li3.8 Sb0.2 Sn0.8 S4 crystallizes into the same structure with high ionic conductivity phase of β-Li3 PS4. Moreover, Li3.8 Sb0.2 Sn0.8 S4 owns good stability in humid air. Matching with LiCoO2 and Li4 Ti5 O12,Li3.8 Sb0.2 Sn0.8 S4 exhibits the potential to be applied in all-solid-state batteries.

关键词： Solid electrolyte Air stable sulfide Li4SnS4,β-Li3PS4 All-solid-state battery

来源：评论

学校读者我要写书评

暂无评论

Interface enhanced well-dispersed Co9S8 nanocrystals as an efficient polysulfide host in lithium–sulfur batteries

引用

Journal of Energy Chemistry 2020年第9期29卷 109-115,I0004页

作者： Xue Liu Qiu He Hong Yuan Chong Yan Yan Zhao Xu Xu Jia-Qi Huang Yu-Lun Chueh Qiang Zhang Liqiang Mai State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070HubeiChina State Key Laboratory of Silicate Materials for Architectures Wuhan University of TechnologyWuhan 430070HubeiChina Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology Department of Chemical EngineeringTsinghua UniversityBeijing 100084China Advanced Research Institute of Multidisciplinary Science Beijing Institute of TechnologyBeijing 100081China Department of Materials Science and Engineering Taiwan Tsinghua UniversityHsinchu 30013TaiwanChina

The high specific capacity and energy density of lithium-sulfur batteries have attracted strong considerations on their fundamental mechanism and energy ***,polysulfide shuttle is still the key issue that impedes the development of Li-S *** nanocrystal hosts for polysulfide immobilization and conversion is a promising *** this contribution,we have investigated well-dispersed Co9S8 nanocrystals grown on graphene oxide(GO)nanosheets with different degrees of dispersion as cathode host materials for Li-S *** Co9S8-GO composite with 1 wt%GO(GCS1)has an average crystal size of 76 nm and shows the strongest adsorption capability toward lithium *** used as the host material for the cathode of Li-S batteries,the GCS1-sulfur composite exhibits an initial specific capacity of^-1000 mAh g^-1 at 0.5 C and shows an average decay rate of 0.11%for 500 *** work on the dispersion control of Co9S8 nanocrystals may inspire more investigations on well-dispersed nanocrystal based hosts for Li-S batteries.

关键词： Metal sulfides Composite sulfur cathode Cobalt sulfides Lithium-sulfur batteries Electrocatalysis

来源：评论

学校读者我要写书评

暂无评论

Mos2/Zno-Heterostructured Optoelectronic Synapse for Multiwavelength Optical Information-Based Sensing, Memory, and processing

SSRN

引用

SSRN 2024年

作者： Li, Zehua Zou, Guisheng Xiao, Yu Feng, Bin Huo, Jinpeng Peng, Jin Sun, Tianming Liu, Lei State Key Laboratory of Clean and Efficient Turbomachinery Power Equipment Department of Mechanical Engineering Tsinghua University Beijing100084 China Key Laboratory for Advanced Materials Processing Technology Ministry of Education Beijing100084 China Taiyuan University of Technology Taiyuan030024 China

The rapid development of artificial intelligence and humanoid robots requires hardware-level revolution of synapses-based bionic vision system. However, current optoelectronic synapses featuring multiwavelength sensing and multifunctional processing necessitate intricate integrations of multi-materials and floating gate configurations, which induces complex fabrication process and limited integration density. Here, we propose a novel two-terminal optoelectronic synaptic device based on MoS2/ZnO heterostructure which integrates sense and memory functions and realizes multifunctional optical information processing while circumvents the need of complex configurations. By simultaneously exploiting the photo-adsorption oxygen dissociation property of ZnO and the persistent photoconductivity effect of MoS2, the device demonstrates synaptic capability of four-color perception with a single synaptic event consuming a mere 2.55×10-9 J. Different from the traditional power-density sensitive nociceptor, for the first time photon energy-sensitive nociceptors is developed, which can mimic the process of UV irradiation to the retina leading to fear of visible light. Diverse information processing ability, such as photonic information encryption, associative learning, and logic calculation, was demonstrated in a single device, indicating a practical strategy for facile design for future high integration intensity neuromorphic devices. © 2024, The Authors. All rights reserved.

关键词： Zinc oxide

来源：评论

学校读者我要写书评

暂无评论

Intraparticle ripening to create hierarchically porous Ti-MOF single crystals for deep oxidative desulfurization

引用

Dalton transactions (Cambridge, England : 2003) 2023年第35期52卷 12244-12252页

作者： Shen Yu Zhan Liu Jia-Min Lyu Chun-Mu Guo Yi-Long Wang Zhi-Yi Hu Yu Li Ming-Hui Sun Li-Hua Chen Bao-Lian Su Laboratory of Living Materials at the State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology 122 Luoshi Road Wuhan 430070 Hubei China. chenlihua@***. Nanostructure Research Center Wuhan University of Technology Wuhan 430070 Hubei China. School of Chemistry Chemical Engineering and Life Science Wuhan University of Technology Wuhan 430070 Hubei China. Laboratory of Inorganic Materials Chemistry University of Namur 61 rue de Bruxelles B-5000 Namur Belgium.

The catalytic oxidative desulfurization (ODS) technique is able to remove sulfur compounds from fuels, conducive to achieving deep desulfurization for the good of the ecological environment. Ti-based metal-organic frameworks (Ti-MOFs) possessing good affinity to organic reactants and considerable numbers of Ti active sites are promising catalysts for ODS. However, current Ti-MOFs suffer from severe diffusion limitations caused by the size mismatch between sole micropores and bulky sulfur compounds, leading to poor ODS performance. Here, a facile method of intraparticle ripening without any additive is developed to obtain hierarchically meso-microporous Ti-MIL-125 single crystals (Meso-Ti-MIL-125) for the first time. Such Meso-Ti-MIL-125 shows a BET surface area of 1401 m g and a mesoporous volume that is 1.7 times as high as that of the conventional Ti-MIL-125. Our novel Meso-Ti-MIL-125 exhibits excellent catalytic performance in the ODS of a series of bulky thiophenic sulfur compounds, completely removing benzothiophene (BT), dibenzothiophene (DBT), and 4,6-dimethyldibenzothiophene (DMDBT) from model fuels, which is, respectively, 2.4 times, 1.5 times, and 6.7 times higher than the removal achieved with conventional Ti-MIL-125. Such a facile synthetic strategy is envisioned to be applied in many kinds of crystalline materials, such as zeolites, for industrial production.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Recent advances in non-metal doped titania for solar-driven photocatalytic/photoelectrochemical water-splitting

引用

能源化学 2022年第3期66卷 529-559页

作者： Ying-Ying Wang Yan-Xin Chen Tarek Barakat Yu-Jia Zeng Jing Liu Stéphane Siffert Bao-Lian Su Laboratory of Inorganic Materials Chemistry(CMI) University of NamurB-5000 NamurBelgium Namur Institute of Structured Matter(NISM) University of NamurB-5000 NamurBelgium Laboratory of Inorganic Materials Chemistry(CMI) University of NamurB-5000 NamurBelgium CAS Key Laboratory of Design and Assembly of Functional Nanostructures and Fujian Provincial Key Laboratory of NanomaterialsFujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002FujianChina College of Physics and Optoelectronic Engineering Shenzhen UniversityShenzhen 518060GuangdongChina State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430074HubeiChina Unité de Chimie Environnementale et Interactions sur le Vivant Université Littoral Cote d'Opale145Avenue Maurice Schuman59140 DunkerqueFrance Laboratory of Inorganic Materials Chemistry(CMI) University of NamurB-5000 NamurBelgium Namur Institute of Structured Matter(NISM) University of NamurB-5000 NamurBelgium State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430074HubeiChina

Photocatalytic(PC)/Photoelectrochemical(PEC)water splitting under solar light irradiation is consid-ered as a prospective technique to support the sustainable and renewable H2 economy and to reach the ultime goal of carbon ***2 based photocatalysts with high chemical stability and excellent photocatalytic properties have great potential for solar-to-H2 *** conquer the challenges of the large band-gap and rapid recombination of photo generated electron-holepairs in TiO2,non-metal doping turns out to be economic,facile,and effective on boosting the visible light *** localized defect states such as oxygen vacancy and Ti3+generated by non-metal doping are located in the band-gap of TiO2,which result in the reduction of band-gap,thus a red-shift of the absorption *** hetero dop-ing atoms such as B3+,I7+,S4+/S6+,P5+can also act as electron donors or trap sites which facilitate the charge carrier separation and suppress the recombination of electron-hole *** this comprehensive review,we present the most recent advances on non-metal doped TiO2 photocatalysts in terms of funda-mental aspects,origin of visible light activity and the PC/PEC behaviours for water *** particular,the characteristics of different non-metal elements(N,C,B,S,P,Halogens)as dopants are discussed in details focusing on the synthesis approaches,characterization as well as the efficiency of PC and PEC water *** present review aims at guiding the readers who want quick access to helpful infor-mation about how to efficiently improve the performance of photocatalysts by simple doping strategies and could stimulate new intuitive into the new doping strategies.

关键词： Photocatalytic/Photoelectrochemical water splitting Titania Non-metal doping Visible light photocatalysis

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：