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Jellyfish bio-inspired Fe@CNT@CuNC derived from ZIF-8 for cathodic oxygen reduction

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Nano Research 2024年第4期17卷 2352-2359页

作者： Kai Cheng Zequan Liu Demin Jiang Min song yuqiao Wang Research Center for Nano Photoelectrochemistry and Devices School of Chemistry and Chemical EngineeringSoutheast UniversityNanjing 211189China Yangtze River Delta Carbon Neutrality Strategy Development Institute Southeast UniversityNanjing 210096China School of Energy and Environment Southeast UniversityNanjing 210096China

Biomimetics provides guidance to design and synthesize advanced catalysts for oxygen reduction reaction in microbial fuel cells(MFCs).Herein,jellyfish-inspired Fe clusters on carbon nanotubes connected with CuNC(Fe@CNT@CuNC)were designed and prepared by using zeolitic imidazolate framework(ZIF)-8 precursors to imitate the organic texture and function of *** antibacterial effect of Cu^(+)ions depressed the growth of cathode biofilm to ensure rapid mass *** clusters and CuNC connected by CNTs accelerated the electron transfer from Fe to *** optimization of oxygen adsorption was caused by electron redistribution between sites of Fe and ***-like catalysts achieved a half-wave potential of 0.86 V and onset potential of 0.95 V *** hydrogen electrode(RHE).MFCs gained the maximum power density of 1600 mW·m^(-2) after 500 h *** work provides insights into the special design of advanced catalysts based on bio-inspiration and biomimetics.

关键词： bio-inspiration oxygen reduction reaction antibacterial ability microbial fuel cells density functional theory(DFT)rational design

Understanding the electrode reaction process of dechlorination of 2,4-dichlorophenol over Ni/Fe nanoparticles: Effect of pH and 2,4-dichlorophenol concentration

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Journal of Environmental Sciences 2019年第10期31卷 13-20页

作者： Kaiyuan Zheng yuqiao song Xu Wang Xin Li Xuhui Mao Dihua Wang School of Resources and Environmental Sciences Wuhan University Wuhan 430079 China Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy Wuhan University Wuhan 430079China

Herein,with the exploitation of iron and nickel electrodes,the 2,4-dichlorophenol(2,4-DCP)dechlorinating processes at the anode and cathode,respectively,were separately studied via various electrochemical techniques(e.g.,Tafel polarization,linear polarization,electrochemical impedance spectroscopy).With this in mind,Ni/Fe nanoparticles were prepared by chemical solution deposition,and utilized to test the dechlorination activities of 2,4-DCP over a bimetallic *** the iron anode,the results showed that higher 2,4-DCP concentration and solution acidity aggravated the corrosion within the *** charge transfer resistance(Rct)values of the iron electrode were 703,473,444,and 437Ω·cm2 for the initial 2,4-DCP concentrations of0,20,50,and 80 mg/L,*** the bulk pH of the 2,4-DCP solution varied from 3.0,5.0to 7.0,the corresponding Rct values were 315,376,and 444Ω·cm2,*** the nickel cathode,the reduction current densities on the electrode at-0.75 V(*** calomel electrode)were 80,106,and 111μA/cm2,for initial 2,4-DCP concentrations of 40,80,and125 mg/*** dechlorination experiments demonstrated that when the initial pH of the solution was 7.0,5.0,and 3.0,the dechlorination percentage of 2,4-DCP by Ni/Fe nanoparticles was 62%,69%,and 74%,respectively,which was in line with the electrochemical experiments.10 wt.%Ni loading into Ni/Fe bimetal was affordable and gave a good dechlorination efficiency of 2,4-DCP,and fortunately the Ni/Fe nanoparticles remained comparatively stable in the dechlorination processes at pH 3.0.

关键词： 2,4-Dichlorophenol(2,4-DCP) Dechlorination Corrosion Catalytic hydrogenation Ni/Fe particles

Simultaneous determination of 3-chlorotyrosine and 3-nitrotyrosine in human plasma by direct analysis in real time–tandem mass spectrometry

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Acta Pharmaceutica Sinica B 2015年第5期5卷 482-486页

作者： yuqiao song Jie Liao Cheng Zha Bin Wang Charles C.Liu Medical Experiment and Analysis Center of PLA General Hospital ASPEC Technologies Limited Beijing

A novel method for the simultaneous determination of 3-nitrotyrosine(NT) and 3-chlorotyrosine(CT) in human plasma has been developed based on direct analysis in real time–tandem mass spectrometry(DART–MS/MS). Analysis was performed in the positive ionization mode using multiple reaction monitoring(MRM) of the ion transitions at m/z 216.2/170.1 for CT, m/z 227.2/181.1 for NT and m/z 230.2/184.2 for the internal standard, d^3-NT. The assay was linear in the ranges 0.5–100 μg/m L for CT and 4–100 μg/m L for NT with corresponding limits of detection of 0.2 and 2 μg/m L. Intra- and inter-day precisions and accuracies were respectively <15% and ±15%. Matrix effects were also evaluated. The method is potentially useful for high throughput analysis although sensitivity needs to be improved before it can be applied in clinical research.

关键词： 3-Nitrotyrosine 3-Chlorotyrosine Determintion DART–MS/MS Human plasma

碳量子点键合磷化钴酸镍的全解水反应及其机理

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科学通报 2024年第4期69卷 606-616页

作者：朱世璠宋利黎李诗诗刘雨欣贺得蓉王育乔东南大学化学化工学院纳米光电化学与器件研究中心南京211189 东南大学长三角碳中和战略发展研究院南京210096 南京师范大学化学与材料科学学院南京210023

在“碳中和”愿景下发展清洁低碳、高效全解水制氢技术日益成为全球共识.磷化钴酸镍(NiCoP)因具有类金属特性有望替代贵金属作为全解水催化剂,但是其表面质子吸附作用较强,与氢氧根离子结合作用较弱,由此降低了其催化活性,延缓了催化反... 详细信息

在“碳中和”愿景下发展清洁低碳、高效全解水制氢技术日益成为全球共识.磷化钴酸镍(NiCoP)因具有类金属特性有望替代贵金属作为全解水催化剂,但是其表面质子吸附作用较强,与氢氧根离子结合作用较弱,由此降低了其催化活性,延缓了催化反应动力学.本文通过碳量子点(carbon quantum dots,CQDs)键合NiCoP的方式既能平衡析氢反应(hydrogen evolution reaction,HER)中的质子吸脱附作用,又能调控析氧反应(oxygen evolution reaction,OER)中的含氧中间态吸脱附过程.当NiCoP表面键合CQDs后,NiCoP的电子向P原子周围富集,并且电子可以通过键合作用转移至CQDs表面,由此引起NiCoP表面电荷重分布,从而增强了反应活性,加快了析氢反应动力学过程.由于量子点键合作用,Co位点的d带中心(d-band center,ε_(d))从−1.18移至−1.04 eV,平衡了催化剂对含氧中间态的吸脱附作用,提高了析氧反应速率.P-Ni和P-Co的键长收缩抑制了催化剂自身的原子浸出和表面氧化,增强了催化剂稳定性.在10 mA cm^(−2)电流密度下,析氧反应过电位为250 mV,析氢反应过电位为101 mV,组装成的对称型全解水器件的电解电位为1.56 V,比贵金属电解槽Pt||RuO_(2)低80 mV.在14 h的持续电解后,电解槽的电流密度保持率为92.18%.因此,当CQDs键合NiCoP后能够在电催化全解水反应中同时保持高催化活性和长期稳定性.

关键词：碳量子点表面键合磷化钴酸镍催化机理全解水

基于射线追踪的高速场景V2I链路的干扰研究

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邮电设计技术 2023年第2期 42-47页

作者：张晴雯郭洪辛谢荣浩宋玉巧北京交通大学电子信息工程学院北京100044 北京交通大学轨道交通控制与安全国家重点实验室北京100044

毫米波通信能够满足目前车辆与基础设施之间通信中低延迟、高可靠性和高数据传输速率的要求,是V2I中的关键技术和重要研究方向。为探究中继车及车流量的不同对V2I通信的干扰,对毫米波(22.1~23.1 GHz)波段的高速场景中V2I通信进行了射线... 详细信息

毫米波通信能够满足目前车辆与基础设施之间通信中低延迟、高可靠性和高数据传输速率的要求,是V2I中的关键技术和重要研究方向。为探究中继车及车流量的不同对V2I通信的干扰,对毫米波(22.1~23.1 GHz)波段的高速场景中V2I通信进行了射线追踪仿真。考虑到频率规划策略、中继车数量和车流量的不同,分析比较了不同部署方式下的信干噪比分布,为V2I通信系统的设计和部署提供支持。

关键词：车联网毫米波射线追踪技术 V2I SINR

Bio-inhibitive effect of an algal symbiotic bacterium on corrosion of magnesium in marine environment

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Journal of Magnesium and Alloys 2023年第12期11卷 4603-4618页

作者： yuqiao Dong Guang-Ling song Yuqing Xu Dajiang Zheng College of Materials Xiamen UniversityXiamen 361005China Department of Ocean Science and Engineering Southern University of Science and TechnologyShenzhenChina State Key Laboratory of Physical Chemistry of Solid Surfaces Xiamen University422 S.Siming RdXiamen361005China The University of Queensland School of Mechanical and Mining EngineeringDivision of Materials EngineeringSt LuciaQld 4072 Australia Institute of Corrosion Science and Technology Guangzhou510530GuangdongChina

It is a longstanding and challenging task to develop sustainable environment-friendly and cost-effective corrosion-protection technologies for Mg alloys, especially under marine conditions in which corrosion can normally be significantly accelerated by bacterial activity. However,this paper reports on the corrosion of highly active Mg interestingly inhibited by an algal-symbiotic bacterium Bacillus altitudinis. The corrosion of Mg in the presence of the bacterium drastically reduced by one order of magnitude after 14 days of immersion. This means that the algal-symbiotic bacterium widely available in natural ocean environments may be employed as a green and sustainable inhibitor in the marine industry. Based on electrochemical measurements, surface analyses and microbe experiments, a combined inhibition mechanism is proposed in the paper to interpret the interesting corrosion behavior of Mg.

关键词： Magnesium Corrosion inhibition Marine environment Biofilm Bacterium

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药型罩网格数量对数值模拟精度的影响

兵工自动化 2022年第7期41卷 57-59页

作者：韩明蕾王健周东康宋雨桥孙旭安徽方圆机电股份有限公司安徽蚌埠233010 中国人民解放军驻蚌埠军代室安徽蚌埠233010

为研究药型罩壁厚网格数量对某大口径破甲战斗部数值模拟可信度的影响,应用非线性动力学有限元软件AUTODYN,对口径为140 mm的单锥罩射流形成及侵彻1 000 mm厚钢靶的过程进行数值模拟,并开展静破甲试验。通过将药型罩壁厚的网格数划分为... 详细信息

为研究药型罩壁厚网格数量对某大口径破甲战斗部数值模拟可信度的影响,应用非线性动力学有限元软件AUTODYN,对口径为140 mm的单锥罩射流形成及侵彻1 000 mm厚钢靶的过程进行数值模拟,并开展静破甲试验。通过将药型罩壁厚的网格数划分为5种方案分别计算,考察网格数对单锥罩射流形成及侵彻的影响规律。结果表明:网格数量较少时,射流提前断裂,侵彻深度较低,且与试验差距较大;当药型罩壁厚的网格划分数为n=6、7时,与试验结果最吻合。

关键词：单锥罩数值模拟侵彻壁厚网格划分数

室温熔盐中CO_2的捕集与电化学资源化转化

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武汉大学学报（理学版） 2016年第1期62卷 9-18页

作者：宋宇桥朱华邓博文汪的华武汉大学资源与环境科学学院湖北武汉430079

室温熔盐(离子液体)具有优良的物理及化学特性、较宽的电化学窗口和较高的电导率,种类众多并易于通过调节阴阳离子组成对物理化学性质进行设计调控,是一类新型的重要化学反应媒质.本文总结评述了室温熔盐作为吸收介质(电解质)捕集CO_2... 详细信息

室温熔盐(离子液体)具有优良的物理及化学特性、较宽的电化学窗口和较高的电导率,种类众多并易于通过调节阴阳离子组成对物理化学性质进行设计调控,是一类新型的重要化学反应媒质.本文总结评述了室温熔盐作为吸收介质(电解质)捕集CO_2与电化学资源化转化方面的研究进展,逐次讨论了传统离子液体、功能化离子液体、离子液体/有机溶液复配体系、离子液体支撑膜、聚合物基离子液体对CO_2吸收捕集的原理和特性,对CO_2在室温熔盐中电化学转化制备高附加值产品(CO、环状碳酸酯、碳酸二甲酯)的电化学反应途径、反应特征和转化效率进行了评述,进一步展望了离子液体在绿色高效CO_2捕集与电化学资源化领域的发展前景.

关键词： CO2 捕集电化学转化离子液体

全株木薯青贮对奶山羊泌乳性能、瘤胃发酵、营养物质表观消化率、血清生化指标及经济效益的影响

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动物营养学报 2024年第7期36卷 4486-4498页

作者：简耀威范斯琴屈金涛周宇桥雍丛燕宋勇张佩华湖南农业大学动物科学技术学院长沙410128 湖南羴牧牧业有限公司城步422500 湖南农业大学园艺学院长沙410128

本试验旨在研究全株木薯青贮对奶山羊泌乳性能、瘤胃发酵、营养物质表观消化率、血清生化指标及经济效益的影响。选择产奶量为(1.47±0.12)kg/d、体重为(45.23±7.72)kg、产奶140 d左右的3胎西农萨能奶山羊24头,随机分成2组,每组4个重复... 详细信息

本试验旨在研究全株木薯青贮对奶山羊泌乳性能、瘤胃发酵、营养物质表观消化率、血清生化指标及经济效益的影响。选择产奶量为(1.47±0.12)kg/d、体重为(45.23±7.72)kg、产奶140 d左右的3胎西农萨能奶山羊24头,随机分成2组,每组4个重复,每个重复3头羊。全株玉米青贮组饲喂全株玉米青贮全混合日粮,全株木薯青贮组饲喂全株木薯青贮全混合日粮。试验期52 d。结果表明:1)与全株玉米青贮组相比,全株木薯青贮组平均日产奶量有提高的趋势但没有达到显著水平(P>0.05)。2)全株木薯青贮组的乳蛋白率显著高于全株玉米青贮组(P0.05)。4)与全株玉米青贮组相比,全株木薯青贮组的粗蛋白质(CP)表观消化率、酸性洗涤纤维(ADF)表观消化率显著提高(P<0.05)。5)与全株玉米青贮组相比,全株木薯青贮组的血清中尿素氮含量显著降低(P<0.05)。6)与全株玉米青贮组相比,全株木薯青贮组血清丙二醛含量显著降低(P<0.05)。7)全株木薯青贮氢氰酸含量在青贮前为102.81 mg/kg,青贮后降至39.90 mg/kg。8)在奶山羊饲粮中添加全株木薯青贮每天可提高1.22元的经济效益。综上所述,在奶山羊饲粮中添加全株木薯青贮可以改善奶山羊瘤胃发酵和抗氧化能力,提高CP和ADF的表观消化率,改善乳品质,提高经济效益。

关键词：全株木薯青贮奶山羊泌乳性能瘤胃发酵养分表观消化率血清生化指标经济效益

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