检索结果-南通市图书馆

Nano Research 2015年第11期8卷 3604-3611页

作者： Huarui Zhu Ying Xu Yu Han Shuwen Chen Tao Zhou Magnus Willander Xia Cao Zhonglin Wang Beijing Institute of Nanoenergy and Nanosystems Chinese Academy of Sciences Beijing 100083 China School of Chemistry and Biological Engineering University of Science & Technology Beijing Beijing 100083 China School of material Science and Engineering Georgia Institute of Technology Atlanta Georgia 30332-0245 USA

Anodic oxidization （AO） is one of the most important methods available for fabricating mesoporous Al2O3 , which can be conducted at either high potential or low potential; however, the need for an external electricity power source limits its applications. In this work, a novel self-powered electrochemical anodic oxidization （SPAO） system was introduced for preparing mesoporous Al2O3 , by using newly-invented triboelectric nanogenerator （TENG） arrays driven by wind power. Using the controllable voltage output of the TENG arrays, the SPAO system was shown to regulate the pore depth and pore size of the mesoporous Al2O3 . In contrast to traditional AO systems, this technique takes advantage of the high output voltage of TENG arrays without any additional energy costs. In addition, the SPAO system can be used for the preparation of other mesoporous materials.

关键词： triboelectric nanogenerator self-powered electrochemical anodic oxidization mesoporous materials

Plasma-tungsten interactions in experimental advanced superconducting tokamak(EAST)

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Tungsten 2019年第2期1卷 122-131页

作者： Fang Ding Guang-Nan Luo Xiahua Chen Hai Xie Rui Ding Chaofeng Sang Hongmin Mao Zhenhua Hu Jing Wu Zhen Sun Liang Wang Youwen Sun Jiansheng Hu 无 Institute of Plasma Physics Chinese Academy of SciencesHefei 230031China Key Laboratory of materials Modification by Laser Ion and Electron Beams(Ministry of Education)School of PhysicsDalian University of TechnologyDalian 116024China the EAST team

Tungsten(W)is used as the armor material of the International Thermonuclear Experimental Reactor(ITER)divertor and is regarded as the potential first wall material of future fusion *** of the key challenges for the successful application of W in fusion devices is effective control of W at an extremely low concentration in *** and control of W erosion are not only a prerequisite for W impurity control,but also vital concerns to plasma-facing component(PFC)*** the application of ITER-like water-cooled full W divertor in EAST in 2014,great efforts were made to inves-tigate W erosion by experiment and simulation.A spectroscopic system was developed to provide a real-time measurement of W sputtering *** experiment and simulation results indicate that carbon(C)is the dominant impurity causing W sputtering in L-mode plasmas,which comes from the erosion of C plasma-facing material(PFM)in the lower divertor and the main chamber *** mixture layer on the surface of W PFCs formed through redeposition or the wall coating can effectively suppress W *** the plasma density and radiation can reduce incident ion energy,thus alleviating W *** H-mode plasmas,control of edge localized mode(ELM)via resonant magnetic perturbation(RMP)proves to be capable of suppressing intra-ELM W *** experiences and lessons from the EAST W divertor are beneficial to the design,manufacturing and operation of ITER and beyond.

关键词： Divertor Tungsten sputtering Erosion EAST Spectroscopy

A dual plasmonic core-shell Pt/[TiN@TiO_(2)]catalyst for enhanced photothermal synergistic catalytic activity of VOCs abatement

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nano Research 2022年第8期15卷 7071-7080页

作者： Anqi Li Qianpeng Zhang Shuaiqi Zhao Yanan Chong Peng Wu Yifei Li Xiaojing Jin Guangxu Chen Yongcai Qiu Shihe Yang Daiqi Ye Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control School of Environment and EnergySouth China University of TechnologyGuangzhou 510006China Department of Electronic and Computer Engineering The Hong Kong University of Science and TechnologyClear Water BayKowloonHong KongChina Guangzhou HKUST Fok Ying Tung Research Institute NanshaGuangzhou 511458China State Key Laboratory of Luminescent materials and Devices South China University of TechnologyGuangzhou 510640China Guangdong Key Lab of Nano-Micro material Research School of Chemical Biology and Biotechnology Shenzhen Graduate SchoolPeking UniversityShenzhen 518055China

Volatile organic compounds(VOCs)are ubiquitous organic pollutants affecting atmospheric environment and human *** development of new efficient and environmentally friendly materials utilizing photothermal synergistic catalysis for purification of VOCs is still ***,we design and prepare a core–shell TiN@TiO_(2)nanostructure integrating with nanoscaled Pt(Pt/[TiN@TiO_(2)])by an attractive quenching *** strong light-harvesting capability of Pt and TiN components improve light-to-heat utilization efficiency by their intrinsic surface plasmon resonance *** TiO_(2)component upon the surface and the coexisting coupling effect of Pt0 and Pt2+enhance the photocatalytic effect of the *** a result,the catalytic performance is significantly improved with toluene(120 ppm)conversion of 100%under the gas hourly space velocity of 72,000 mL·g^(−1)·h^(−1)and light illumination of 500 mW·cm^(−2).The desired catalyst thus achieves highly efficient coupling effect of photocatalysis and light-to-heat conversion for promoting VOCs abatement.

关键词： core-shell Pt/[TiN@TiO_(2)]catalyst volatile organic compounds(VOCs)abatement photothermal synergistic catalysis full spectrum sunlight utilization

Two new pseudo-isomeric nickel(Ⅱ)metal-organic frameworks with efficient electrocatalytic activity toward methanol oxidation

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Rare Metals 2021年第2期40卷 489-498页

作者： Shan Liu Xiao Wang Hong-Guang Yu Ya-Pan Wu Bo Li Ya-Qian Lan Tao Wu Jian Zhang Dong-Sheng Li College of materials and Chemical Engineering Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion MaterialsChina Three Gorges UniversityYichang443002China

Searching for non-noble metal catalysts with high activities and low price is critical to the commercialization of methanol oxidation in the process of fuel ***,two new pseudo-isomeric Ni metal-organic frameworks(Ni-MOFs)(CTGU-17/CTGU-18)have been prepared with 1,4-naphthalenedi-carboxylate(H_(2)NDC),4,4’-dipyridyl amine(DPA)and Ni(ClO_(4))_(2)under hydrothermal *** phase contains one water molecule,but differs dramatically in its bonding to the framework,resulting in different topological networks with fourfold interpenetrating 4-connected dia net(CTGU-17)and(3,7)-connected net(CTGU-18)and diverse electrocatalytic performance for methanol oxidation reaction(MOR).Remarkably,by combining each MOF with the conductive additive,acetylene black(AB),a composite material,AB&CTGU-18(2:4)was confirmed to have an excellent performance for MOR with a high mass specific peak current of 442.3 mA·mg^(-1).The enhanced electrocatalytic activities and robustness might be attributed to the synergetic effect of acetylene black and the active metal centers of MOFs particles for methanol *** present work would provide a new insight for the rational design of MOFs-based composites with enhanced methanol oxidation reaction performance.

关键词： Nickel(Ⅱ) MOFs Composite materials Electrocatalysis Methanol oxidation

Process reconfiguration and intensification:An emerging opportunity enabling efficient carbon capture and low-cost blue hydrogen production

在线全文

学校读者我要写书评

暂无评论

Green energy & Environment 2023年第4期8卷 945-947页

作者： Dongke Zhang Centre for energy(M473) The University of Western Australia35 Stirling HighwayCrawleyWA 6009Australia

Low-carbon hydrogen can play a significant role in decarbonizing the world. Hydrogen is currently mainly produced from fossil sources,requiring additional CO_(2)capture to decarbonize, which energy intense and costly. In a recent Green energy & Environment paper, Cheng and Di et al. proposed a novel integration process referred to as SECLR_(HC) to generate high-purity H_(2) by in-situ separation of H_(2)and CO without using any additional separation unit. Theoretically, the proposed process can essentially achieve the separation of C and H in gaseous fuel via a reconfigured reaction process, and thus attaining high-purity hydrogen of ~99%, as well as good carbon and hydrogen utilization rates and economic feasibility. It displays an optimistic prospect that industrial decarbonization is not necessarily expensive, as long as a suitable CCS measure can be integrated into the industrial manufacturing process.

关键词： Chemical looping Hydrogen Low energy cost Reconfigured reaction Industrial decarbonization

Mechanical properties and flame retardancy of surface modified magnesium oxysulfate(5Mg(OH)_(2)·MgSO_(4)·3H_(2)O)whisker for polypropylene composites

在线全文

学校读者我要写书评

暂无评论

Journal of Materiomics 2018年第2期4卷 149-156页

作者： Eui-Su Kim Ye Chan Kim Jungwoo Park Youngjun Kim Sung-Hoon Kim Kwang Jin Kim Jonghwan Suhr Youngkwan Lee Seong Hoon Lee Dae-Sik Kim Soo-Hyun Kim Ju-Ho Yun In-Kyung Park Jae-Do Nam School of Chemical Engineering Department of Polymer Science and EngineeringSungkyunkwan UniversitySuwon16410Republic of Korea Department of Mechanical Engineering University of NevadaLas Vegas4505 S.Maryland ParkwayLas VegasNV89154United States Department of energy Science Sungkyunkwan UniversitySuwon16410Republic of Korea Perceived materials Research team Hyundai Motor Group18280HwaseongRepublic of Korea Korea Institute of Science and Technology Seoul02792Republic of Korea Korea Automotive Technology Institute Cheonan31214Republic of Korea

Magnesium oxysulfate(MOS)whisker is considered as a promising inorganic material recently attracting a great attention for being used as a reinforcing filler for polymer composites due to high aspect ratio and extremely-low bulk *** this study,the MOS was treated with 3-methacryloyloxypropyl-trimethoxy silane(MPS)via sol-gel condensation reactions,which successfully allowed melt mixing with polypropylene(PP)up to 30 wt%of *** tensile strength at yield and modulus of the MOS/PP composites were substantially increased by 50.8%and 362%,respectively,when compared with the pristine *** a novel finding,the flame retardancy of MOS was proved by identifying water evolution at elevated temperatures giving out 9 wt%of water in 250-320℃and 14 wt%in 350-420℃in two *** work demonstrated that the MOS could be an excellent filler for PP not only increasing the mechanical properties in a great extent but also imposing flame retarding capability.

关键词： Magnesium oxysulfate Surface modification Mechanical properties Flame retardant

Path towards high-efficient kesterite solar cells

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of energy Chemistry 2018年第4期27卷 1040-1053页

作者： Dongxiao Wang Wangen Zhao Yi Zhang Shengzhong(Frank)Liu Institute of Photoelectronic Thin Film Devices and Technology and Key Laboratory of Photoelectronic Thin Film Devices and Technology Tianjin Nankai UniversityTianjin 300071China Key Laboratory for Applied Surface and Colloid Chemistry National Ministry of EducationShaanxi Engineering Lab for Advanced Energy TechnologySchool of Materials Science and EngineeringShaanxi Normal UniversityXi'an 710062ShaanxiChina Dalian National Laboratory for Clean energy iChEM(Collaborative Innovation Center of Chemistry for Energy Materials)Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023.LiaonigChina

Kesterite structure semiconductor Cu2ZnSn（S,Se）4 is one of the most promising candidate as a light absorber material to overtake the next generation of thin film solar cells, owing to its low cost, non-toxic, and earth abundant source materials. The Sbockley-Queisser limit of the single junction Cu2ZnSn（S,Se）4 solar cell is over 30%, signifying a large potential of this family of solar cells. In the past years, with the development of synthesis techniques, Cu2ZnSn（S,Se）4 solar cells have attracted considerable atten- tion and the power conversion efficiency of Cu2ZnSn（S,Se）4 solar cell has experienced a rapid progress. Presently, the certified champion efficiency of CZTSSe solar cells has reached to 12.6%, which is far below the efficiency of Cu（ln,Ga）Se2 solar cell. In this review, the developments of Cu2ZnSn（S,Se）4 solar cells in recent years are briefly reviewed. Then the fundamental understanding of Cu2ZnSn（S,Se）4 solar cells is introduced, including materials and device structure, as well as the band alignment of hetero-junction and their impacts on device performance. After that, we mainly review the progress and achievements in the preparation processes, through vacuum and non-vacuum based processes. Finally, we outline the challenges and perspectives of this promising solar cell.

关键词： Kesterite CZTS Thin film solar cells

Deposition of Ag Nanoparticles on Carbon Microspheres Surface：Evaluation of Structures,Electrochemical and Optical Properties

在线全文

学校读者我要写书评

暂无评论

Journal of Wuhan University of Technology(materials Science) 2016年第4期31卷 743-749页

作者：杨维佳 HAO Yamin YAN Lingpeng 杨永珍陈永康 LIU Xuguang XU Bingshe Key Laboratory of lnterface Science and Engineering in Advanced materials Taiyuan University of Technology Taiyuan 030024 China Research Center on Advanced material Science and Technology Taiyuan University of Technology Taiyuan 030024 China College of Chemistry and Chemical Engineering Taiyuan University of Technology Taiyuan 030024 China

A hybrid material of carbon microspheres（CMSs） with Ag decoration（Ag/CMSs） was ***（3-hexylthiophene）：Ag/CMSs composite film was prepared by *** electron microscopy,transmission electron microscopy,Fourier transform infrared spectrometry,X-ray diffraction,thermogravimetric analysis and cyclic voltammetry were employed to analyze the morphologies,structures,thermal properties and energy levels of Ag/*** optical property of the composite films was characterized by ultraviolet-visible spectrophotometry and fluorescent *** results indicate that silver nanoparticles（AgNPs,d = 10-20 nm） are distributed on the surface of *** and HOMO energy levels of Ag/CMSs are-3.97 and-5.52 e V,below the vacuum energy level,respectively,indicating that it is feasible to use Ag/CMSs as an electron *** NPs are blended into the active layer to trigger localized surface plasmon resonance,and consequently enhance light *** coupling of surface plasmons and excitons increased the probability of exciton dissociation.

关键词： ultraviolet silver voltammetry plasmon visible consequently exciton dissociation blended localized

Reliability of flip-chip bonded RFID die using anisotropic conductive paste hybrid material

在线全文

学校读者我要写书评

暂无评论

Transactions of Nonferrous Metals Society of China 2011年第A1期21卷 175-181页

作者： Jun-Sik LEE Jun-Ki KIM Mok-Soon KIM Namhyun KANG Jong-Hyun LEE Advanced Joining Technology team/Microjoining Center Korea Institute of Industrial Technology(KITECH) Yeonsu-gu Incheon 406-840 Korea School of materials Science & Engineering Inha University Department of materials Science & Engineering Pusan National University Department of materials Science & Engineering Seoul National University of Technology

A reliability of flip-chip bonded die as a function of anisotropic conductive paste (ACP) hybrid materials, bonding conditions, and antenna pattern materials was investigated during the assembly of radio frequency identification(RFID) inlay. The optimization condition for flip-chip bonding was determined from the behavior of bonding strength. Under the optimized condition, the shear strength for the antenna printed with paste-type Ag ink was larger than that for Cu antenna. Furthermore, an identification distance was varied from the antenna materials. Comparing with the Ag antenna pattern, the as-bonded die on Cu antenna showed a larger distance of identification. However, the long-term reliability of inlay using the Cu antenna was decreased significantly as a function of aging time at room temperature because of the bended shape of Cu antenna formed during the flip-chip bonding process.

关键词： RFID inlay ACP flip-chip, bonding process reliability

Research Progress in Improving the Rate Performance of LiFePO_4 Cathode materials

在线全文

学校读者我要写书评

暂无评论

Nano-Micro Letters 2014年第3期6卷 209-226页

作者： Sixu Deng Hao Wang Hao Liu Jingbing Liu Hui Yan The College of materials Science and Engineering Beijing University of Technology Chengdu Green energy and Green Manufacturing Technology R&D Centre

Olivine lithium iron phosphate(Li Fe PO4) is considered as a promising cathode material for high power density lithium ion battery due to its high capacity, long cycle life, environmental friendly, low cost, and safety consideration. The theoretical capacity of Li Fe PO4 based on one electron reaction is 170 m Ah g-1at the stable voltage plateau of 3.5 V vs. Li/Li+. However, the instinct drawbacks of olivine structure induce a poor rate performance, resulting from the low lithium ion diffusion rate and low electronic *** this review, we summarize the methods for enhancing the rate performance of Li Fe PO4 cathode materials,including carbon coating, elements doping, preparation of nanosized materials, porous materials and composites,etc. Meanwhile, the advantages and disadvantages of above methods are also discussed.

关键词： LiFePO4 Lithium ion battery Rate performance