检索结果-内蒙古大学图书馆

Amorphous high-entropy phosphoxides for efficient overall alkaline water/seawater splitting

Journal of Materials science & technology 2024年第6期173卷 1-10页

作者： Han-Ming Zhang Lihao Zuo Yuhang Gao Junxia Guo Caizhen Zhu Jian Xu Jinfeng Sun School of Materials Science and Engineering Hebei University of Science and TechnologyShijiazhuangHebei 050018China Hebei Key Laboratory of Flexible Functional Materials ShijiazhuangHebei 0500180China Institute of Low-dimensional Materials Genome Initiative College of Chemistry and Environmental EngineeringShenzhen UniversityShenzhenGuangdong 518060China

Designing and synthesizing cost-effective bifunctional catalysts for overall alkaline water/seawater splitting is still a huge challenge for hydrogen ***,Co/Ni/Fe/Mn based-amorphous high-entropy phosphoxide self-standing electrode(CNFMPO)is synthesized by the facile and fast electrodeposition *** exhibits excellent bifunctional electrocatalytic performances on alkaline water/seawater *** hydrogen evolution reaction(HER)and oxygen evolution reaction(OER)overpotentials of CNFMPO in alkaline water/seawater are as low as 43/73 and 252/282 mV to reach a current density of 10 mA cm^(-2),***,two-electrode electrolyzers with CNFMPO||CNFMPO successfully achieve the current density of 10 mA cm^(-2) at low voltages of 1.54 and 1.56 V for overall alkaline water/seawater splitting,*** exhibits satisfactory long-term stability on overall alkaline water/seawater splitting for the surface reconstruction into active metal hydroxide/(oxy)hydroxide,phosphite,and ***,no hypochlorite is detected during seawater electrolysis for the beneficial chlorite oxidation inhibition of the reconstructed phosphite and *** excellent catalytic performances of CNFMPO are due to the unique amorphous structure,multi-component synergistic effect,beneficial electronic structure modulation,and surface reconstruction during the catalytic reaction ***,CNFMPO has shown potential promotion to the development of the water/seawater splitting industry as a promising substituent for noble-metal *** work provides new insights into the design of efficient bifunctional catalysts for overall water/seawater splitting.

关键词： Amorphous high-entropy phosphoxides Water/seawater splitting Synergistic effect Surface reconstruction Electronic structure modulation Inhibition of chloride oxidation reaction

来源：评论

学校读者我要写书评

暂无评论

Reversible cationic-anionic redox in disordered rocksalt cathodes enabled by fluorination-induced integrated structure design

引用

Journal of Energy Chemistry 2023年第7期82卷 158-169,I0004页

作者： Feng Wu Jinyang Dong Jiayu Zhao Qi Shi Yun Lu Ning Li Duanyun Cao Wenbo Li Jianan Hao Yu Zheng Lai Chen Yuefeng Su School of Materials Science and Engineering Beijing Key Laboratory of Environmental Science and EngineeringBeijing Institute of TechnologyBeijing 100081China Beijing Institute of Technology Chongqing Innovation Center Chongqing 401120China BTR New Material Group Co. LtdShenzhen 518000GuangdongChina

Cation-disordered rocksalt oxides(DRX)have been identified as promising cathode materials for high energy density applications owing to their variable elemental composition and cationic-anionic redox ***,their practical implementation has been impeded by unwanted phenomena such as irrepressible transition metal migration/dissolution and O_(2)/CO_(2)evolution,which arise due to parasitic reactions and densification-degradation mechanisms during extended *** address these issues,a micron-sized DRX cathode Li_(1.2)Ni_(1/3)Ti_(1/3)W_(2/15)O_(1.85)F_(0.15)(SLNTWOF)with F substitution and ultrathin LiF coating layer is developed by alcohols assisted sol-gel *** this fluorination-induced integrated structure design(FISD)strategy,in-situ F substitution modifies the activity/reversibility of the cationic-anionic redox reaction,while the ultrathin LiF coating and single-crystal structure synergistically mitigate the cathode/electrolyte parasitic reaction and densification-degradation *** to the multiple modifications and size effect in the FISD strategy,the SLNTWOF sample exhibits reversible cationic-anionic redox chemistry with a meliorated reversible capacity of 290.3 mA h g^(-1)at 0.05C(1C=200 mA g^(-1)),improved cycling stability of 78.5%capacity retention after 50 cycles at 0.5 C,and modified rate capability of 102.8 mA h g^(-1)at 2 *** work reveals that the synergistic effects between bulk structure modification,surface regulation,and engineering particle size can effectively modulate the distribution and evolution of cationic-anionic redox activities in DRX cathodes.

关键词： Cation-disordered rocksalt oxides Fluorine substitution Ultrathin LiF coating Micron-sized single-crystal Reversible cationic-anionic redox

来源：评论

学校读者我要写书评

暂无评论

Diverse transformations of sulfur in seabird-affected sediments revealed by microbial and stable isotope analyses

引用

Journal of Oceanology and Limnology 2023年第1期41卷 138-149页

作者： Lili SHEN Tao HUANG Yuanqing CHEN Zhuding CHU Zhouqing XIE School of Resources and Environmental Engineering Anhui UniversityHefei 230601China Anhui Province Key Laboratory of Wetland Ecosystem Protection and Restoration Anhui UniversityHefei 230601China Anhui Key Laboratory of Polar Environment and Global Change Department of Environmental Science and EngineeringUniversity of Science and Technology of ChinaHefei 230026China

Microbial communities,sulfur isotope of sulfides(δ^(34)S_(AVS)and δ^(34)S_(CRS)),and sulfur and oxygen isotopes of sulfate(δ^(34)S_(SO_(4))and δ^(18)O_(SO_(4)))in sediments were analyzed to reveal the biogeochemical transformations of sulfur in a seabird-affected lake Y2 and a se abird-free YO from Fildes Peninsula,Antarctic *** microbial communities in Y2 were mainly associated with penguin activities,while those in YO were limited by *** much enriched δ^(34)S_(SO_(4))recorded at depth of 30,41,and 52 cm in Y2indicates very strong sulfate reduction *** sulfur-degrading bacteria Pseudomonas in 0-23 cm of Y2 was 3.5 time s as abundant as that of sulfur oxidizing bacteria(SOB),indicating remarkable remineralization of organic *** abundant SOB and ^(34)S-depleted sulfate indicate considerable sulfur oxidation in 34-56-cm layer in *** YO sediments,the highest abundance of Desulfotalea and the most enriched δ^(34)S_(SO_(4))(35.2‰)and δ^(34)S_(CRS)(2.5‰)indicate the strongest sulfate reduction in 28-cm *** abundance of Pseudomonas indicates active remineralization of organic sulfur in 3-5-cm layer in *** medium δ^(34)S_(SO_(4))and considerable abundance of SOB and sulfate-reducing bacteria(SRB)indicate concurrence of sulfur oxidation and sulfate reduction in other layers in ***,a high level of organic matter input from penguin populations supported the diverse microbial community and transformations of sulfur in aquatic ecosystems in Antarctica.

关键词： sulfur and oxygen isotope dissimilatory sulfate reduction sulfur oxidation sulfate-reducing bacteria Antarctica

来源：评论

学校读者我要写书评

暂无评论

Investigating the possibility of multiple board parallel test of atmospheric-neutron induced soft errors

Investigating the possibility of multiple board parallel tes...

引用

2023 Advanced Fiber Laser Conference, AFL 2023

作者： Yu, Qirui Zhang, Zhan'Gang Li, Bin Zheng, Shunshun Lin, Jianjun Wu, Zhaohui Lei, Zhifeng Peng, Chao Ma, Teng School of Microelectronics South China University of Technology Guangzhou511442 China Science and Technology on Reliability Physics and Application of Electronic Component Laboratory China Electronic Product Reliability and Environmental Testing Research Institute Guangzhou511370 China Gowin Semiconductor Corporation Guangzhou510700 China

ISBN: (纸本)9781510677661

Accelerated tests for Single Event Effect (SEE) that irradiate the target with far higher fluence beam are typically applied to investigate the device sensitivity to atmospheric neutron. Considering the neutrality and strong penetrability of neutron, devices are frequently placed in parallel to save time. For nanoscale devices, however, the results may be significantly influenced. The possibility of applying multiple-board parallel testing in accelerated experiments of atmospheric-neutron-induced soft errors was investigated using a 22-nm Static Random-Access Memory (SRAM) Field Programmable Gate Array (FPGA). To simplify the analysis, several empty Printed Circuit Boards (PCBs) were employed as the upstream boards. Both Block Random-Access Memory (BRAM) and Configuration Random-Access Memory (CRAM) were tested under the neutron beam provided by Atmospheric Neutron Irradiation Spectrometer (ANIS), showing similar results. For high-energy neutrons, device sensitivity decreases as the number of upstream PCBs increases, although the influence seems weak. The drop in cross sections from no-PCB to 20-PCBs is less than 30% for both modules. For thermal neutron testing, however, its sensitivity was greatly suppressed by PCBs. Epoxy resin contained in PCBs is considered to be the key factors for these phenomena due to its high content of hydrogen. Also, neutron can be scattered by copper to lose energy or even be absorbed by it. As a result, the actual fluence of the neutron reaching the device was reduced. Therefore, parallel testing may not be suitable if thermal neutrons need to be considered, but it is practicable for high-energy neutron testing with proper correction algorithms applied. © COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only.

关键词： Neutrons

来源：评论

学校读者我要写书评

暂无评论

Distribution and abundance of krill in various areas of the Southern Ocean: dataset compilation based on samples collected in CHINARE during 2009-2019

引用

Advances in Polar science 2024年第3期35卷 370-384页

作者： FANGGXiaoyue HU Shugang WANG Yanqing HANG Zishang TAO Zhencheng YANG Guang College of Safety and Environmental Engineering Shandong University of Science and TechnologyQingdao 266590China Key Laboratory of Marine Ecology and Environmental Sciences Institute of OceanologyChinese Academy of SciencesQingdao 266071China Engineering Technology Department Institute of OceanologyChinese Academy of SciencesQingdao 266071China Qingdao University of Science and Technology Qingdao 266042China Laboratory for Marine Ecology and Environmental Science Qingdao National Laboratory for Marine Science and TechnologyQingdao 266237China Center for Ocean Mega-Science Chinese Academy of SciencesQingdao 266071China University of Chinese Academy of Sciences Beijing 10049China

This study investigates the composition,abundance,and basic biological parameters of krill in Prydz Bay,Antarctic Peninsula and Amundsen Sea by analyzing samples and environmental data from the Chinese National Antarctic Research Expeditions conducted between 2009/2010 and 2019/*** predominant krill species observed were Euphausia superba,Euphausia crystallorophias,and Thysanoessa ***,although the most widespread,exhibited the lowest mean abundance 9.96 ind:(1000 m^(-3))and biomass 0.31 g(1000 m^(-3)),predominantly found in low-latitude regions of the Amundsen Sea while *** was most concentrated in polynyas of Prydz ***,with an average abundance of 34.05 ind(1000 m^(-3))and biomass of 11.80 g:(1000 m^(-3)),was mainly distributed in the Antarctic Peninsula and Prydz *** study also identified regional variations in mean body length and frequency distributions of *** relationship between krill body length and wet weight followed a power-law *** differences were observed in the relationship between krill abundance,biomass,and environmental factors with varying *** the Amundsen Sea,no significant correlation was found between krill abundance and environmental ***,*** in Prydz Bay demonstrated a significant positive correlation with chlorophyll a concentration,while *** abundance and biomass in the Antarctic Peninsula exhibited a significant negative correlation with ice-free *** findings contribute valuable regional data on krll distribution,abundance,and biomass in the Southern Ocean,serving as foundational information for the conservation of the Southern Ocean ecosystem and Antarctic krill fishery management on a circumpolar scale.

关键词： Southern Ocean krill Euphausia superba biomass dataset

来源：评论

学校读者我要写书评

暂无评论

Polyphenol-mediated interfacial deposition strategy for supported manganese oxide catalysts with excellent pollutant degradation performance

引用

Chinese Chemical Letters 2024年第5期35卷 493-498页

作者： Dong Cheng Youyou Feng Bingxi Feng Ke Wang Guoxin Song Gen Wang Xiaoli Cheng Yonghui Deng Jing Wei The Key Laboratory of Biomedical Information Engineering of Ministry of Education State Key Lab of Transducer TechnologySchool of Life Science and TechnologyXi’an Jiaotong UniversityXi’an 710049China School of Environmental and Municipal Engineering Xi’an University of Architecture and TechnologyXi’an 710055China Department of Chemistry State Key Laboratory of Molecular Engineering of PolymersState Key Laboratory of Transducer TechnologyFudan UniversityShanghai 200433China Key Laboratory of Functional Inorganic Material Chemistry Ministry of EducationSchool of Chemistry and Materials ScienceHeilongjiang UniversityHarbin 150080China

In persulfate-based advanced oxidation process(PS-AOPs),fixing nanosized metal oxide on processable substrates is highly desirable to avoid the aggregation and loss of nanocatalysts during the practical ***,it is still challenging to develop a versatile strategy for the deposition of metal oxide nanocatalysts on various substrates with different physicochemical ***,polyphenols are utilized as a“molecular glue”and reductant to mediate the interfacial deposition of MnO_(2) nanocatalysts on different ***_(2) nanocatalysts were in-situ grown on macroscope mineral substrates(e.g.,airstone)via an interfacial redox strategy between tannic acid(TA)and oxidized KMnO4,and then employed as a fixed catalyst of peroxymonosulfate(PMS)activation for treating pharmaceutical and personal care products(PPCPs)in *** fixed MnO_(2) exhibited superior catalytic performance toward different PPCPS via a singlet oxygen(^(1)O_(2))-dominated nonradical oxidation *** in the secondary effluent of wastewater treatment plants could be effectively removed by a fixed-bed column of the fixed MnO_(2) with long term *** cycle of Mn^(4+)/Mn^(3+)and surface hydroxyl group of the fixed MnO_(2) was proved to be responsible for the activation of *** work provides a new avenue for developing fixed metal oxides for sustainable water treatment.

关键词： Redox strategy Manganese oxides Fixed catalyst Peroxymonosulfate PPCPs

来源：评论

学校读者我要写书评

暂无评论

Degradation mechanisms of total ionizing dose effect in photocouplers

Degradation mechanisms of total ionizing dose effect in phot...

引用

2023 Advanced Fiber Laser Conference, AFL 2023

作者： He, Yujuan Liu, Tianzi Ma, Teng Zhang, Hong Tan, Xu Lei, Zhifeng Peng, Chao Zhang, Zhangang Liu, Yuebo Science and Technology on Reliability Physics and Application of Electronic Component Laboratory China Electronic Product Reliability and Environmental Testing Research Institute Guangzhou511370 China Guangzhou Intelligent Equipment Research Institute Co. Ltd Guangzhou510535 China

ISBN: (纸本)9781510677661

This article investigates the degradation mechanisms of total ionizing dose (TID) effects in photocouplers under different bias conditions. The irradiation measurement of silicon-based photocoupler devices is carried out by using a 60Co γ-ray source under various radiation bias conditions. The results of the test indicate that the current transfer rate (CTR) of the photocoupler reduces with an increase in the total dose. In addition, the non-luminous traps produced by the TID irradiation in the diffusion region of the PN junction of the light-emitting diode within the photocoupler cause more severe total dose effects when the input current of the device is low. This could be attributed to the charges being captured more easily in such scenarios. These representative results support the reliable application of the photocoupler devices in space radiation environments. © COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only.

关键词： Irradiation

来源：评论

学校读者我要写书评

暂无评论

Chlorine-rich lithium argyrodites enables superior performances for solid-state Li-Se batteries at wide temperature range

引用

Rare Metals 2022年第12期41卷 4065-4074页

作者： Jin-Yan Lin Shuai Chen Jia-Yang Li Dian Yu Xiang-Ling Xu Chuang Yu Shao-Qing Chen Xue-Fei Miao Lin-Feng Peng Chao-Chao Wei Chong-Xuan Liu Shi-Jie Cheng Jia Xie State Key Laboratory of Advanced Electromagnetic Engineering and Technology School of Electrical and Electronic EngineeringHuazhong University of Science and TechnologyWuhan 430074China School of Materials Huazhong University of Science and TechnologyWuhan 430074China Department of Materials Science and Engineering Southern University of Science and TechnologyShenzhen 518055China Key Laboratory of Advanced Metallic and Intermetallic Materials Technology School of Materials Science and EngineeringNanjing University of Science and TechnologyNanjing 210094China School of Environmental Science and Engineering Southern University of Science and TechnologyShenzhen 518055China

All-solid-state Li-Se battery shows great potential as a candidate for next-generation energy storage devices due to its high energy density and ***,the low ionic conductivity of the solid electrolytes and large volume changes of Se active materials are two of the major issues that limit its ***,a simple solid-state reaction method is applied to synthesize chlorine-rich argyrodite Li_(5.5)PS_(4.5)CI_(1.5)electrolyte with high conductivity of 6.25 mS·cm^(-1)at room *** nanotube(CNT)is introduced as the host for Se to obtain Se/CNT composite with both enhanced electronic conductivity and lower volume expansion during the electrochemical reaction ***-solid-state Li-Se battery using Li_(5.5)PS_(4.5)CI_(1.5)as solid electrolyte combined with Se/CNT cathode and Li-In anode shows a discharge capacity of 866 mAh·g-1for the 2nd cycle under0.433 mA·cm-2at room ***,the assembled battery delivers a high discharge capacity of1026 mAh·g^(-1)for the 2nd cycle when cycled at the same current density at 60℃and maintains a discharge capacity of 380 mAh·g^(-1)after 150 *** to the high Li-ion conductivity of Li_(5.5)PS_(4.5)CI_(1.5)electrolyte,the assembled battery displays a high discharge capacity of 344 mAh·g^(-1)under 0.113 mA·cm^(-2)at-20℃C and remains 66.1%after200 *** addition,this all-solid-state Li-Se battery shows ultralong cycling performances up to 1000 cycles under 0.433 mA·cm^(-2)at-20℃.This work offers the design clue to fabricate the all-solid-state Li-Se battery workable at different operating temperatures with an ultralong cycling life.

关键词： Lithium argyrodite Chlorine-rich All-solidstate Li-Se batteries Operating temperatures Long cycling performances

来源：评论

学校读者我要写书评

暂无评论

Facile preparation ofα-MnO_(2)nanowires for assembling free-standing membrane with efficient Fenton-like catalytic activity

引用

Chinese Chemical Letters 2023年第3期34卷 240-244页

作者： Yufei Zhen Zhiqiang Sun Ziye Jia Caihong Liu Shishu Zhu Xueyan Li Wei Wang Jun Ma School of Environment State Key Laboratory of Urban Water Resources and EnvironmentHarbin Institute of TechnologyHarbin 150090China Key Laboratory of Eco-Environments in Three Gorges Reservoir Region Ministry of EducationSchool of Urban Construction and Environmental EngineeringChongqing UniversityChongqing 400044China School of Environmental Science and Engineering Sun Yat-sen UniversityGuangzhou 510275China Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology Sun Yat-sen UniversityGuangzhou 510275China School of Environmental Science and Engineering Suzhou University of Science and TechnologySuzhou 215009China

Assembling MnO_(2)nanowires into macroscopic membrane is a promising engineered technology for catalyst separation and enhancement of Fenton-like reaction activity,yet its development is limited by the deficiencies in preparation and property modulation of the MnO_(2)*** this work,we developed a facile method using C_(2)H_5OH and CH_(3)COOK as reductive and vital control reagents to react with KMnO_(4)by hydrothermal reaction at 140℃for 12 h,to prepare the ultralongα-MnO_(2)nanowires up to tens of micrometers with high purity and aspect *** strategy not only had the advantages of being mild,easily controlled and environmental pollution-free,but also endowedα-MnO_(2)nanowires with excellent ability as a Fenton catalyst when assembled into free-standing membrane for degrading phenolic compounds(k_(obs)=0.0738~0.1695 min^(-1))in a continuous flow *** reactive oxygen species(i.e.,~·OH)from Fenton-like reaction were enriched within thisα-MnO_(2)nanowire membrane via nanoconfinement effect,which further enhanced the mass transportation of~·OH available for phenolic ***_(2)nanowire membrane using our method possessed the high practical potential for water purify due to its easy-preparation and enhanced catalytic performances.

关键词： α-MnO_(2)nanowires Formation mechanism Free-standing membrane Fenton-like system

来源：评论

学校读者我要写书评

暂无评论

Effects of iron-based metal–organic framework-MIL-53(Fe) and phosphorus-based flame retardants on the flame retardancy of high-density polyethylene

引用

Journal of Thermal Analysis and Calorimetry 2024年第10期149卷 4505-4516页

作者： Liu, Huimin Deng, Lisha Zhao, Ziheng Sun, Xiaoyan Zhou, Ru Shu, Chi-Min Jiang, Juncheng Jiangsu Key Laboratory of Urban and Industrial Safety College of Safety Science and Engineering Nanjing Tech University Nanjing211816 China Department of Safety Health and Environmental Engineering National Yunlin University of Science and Technology Yunlin Douliou64002 Taiwan

An iron-based metal–organic framework, MIL-53(Fe), was synthesized and added as a synergist to high-density polyethylene (HDPE), and its flame-retardant effect with aluminum diethyl hypophosphite (ADP) and aluminum hypophosphite (AHP) in HDPE was investigated to further improve the flame-retardant efficiency. FTIR results showed that the ADP, AHP, and MIL-53(Fe) were successfully incorporated into the HDPE. The LOI of HDPE-3 and HDPE-7 with 0.75 mass% MIL-53(Fe) was 48.9% and 34.8% higher than that of the pure sample. The combustion grades reached V-0 and V-1. HDPE/MIL-53(Fe)/ADP exhibited more superior flame-retardant properties than HDPE/MIL-53(Fe)/AHP. A synergistic effect between ADP and both AHP and MIL-53(Fe) changes the decomposition process of HDPE. In addition, the FGI value of the composites decreased after the addition of MIL-53(Fe). MIL-53(Fe) enhances the thermal stability of HDPE composites, and improves the quality of the char residue. Experimental results show that MIL-53(Fe) can be used as a flame retardant and is a novel material in polymer flame-retardant research. The new synthetic material shown here may contribute to environmental safety. © Akadémiai Kiadó, Budapest, Hungary 2024.

关键词： Aluminum

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：