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Silver based single atom catalyst with heteroatom coordination environment as high performance oxygen reduction reaction catalyst

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Nano Research 2022年第9期15卷 7968-7975页

作者： Rui sui Xuejiang Zhang Xingdong Wang xinyu Wang Jiajing Pei Yufeng Zhang Xuerui Liu Wenxing Chen Wei Zhu Zhongbin Zhuang State Key Lab of Organic-Inorganic Composites and Beijing Advanced Innovation Center for Soft Matter Science and Engineering Beijing University of Chemical TechnologyBeijing 100029China International Clean Energy Research Office China Three Gorges CorporationBeijing 100038China Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications School of Materials Science and EngineeringBeijing Institute of TechnologyBeijing 100081China Beijing Key Laboratory of Energy Environmental Catalysis Beijing University of Chemical TechnologyBeijing 100029China

Ag is a potential low-cost oxygen reduction reaction(ORR)catalyst in alkaline condition,which is important for the zinc-air ***,we report that an Ag based single atom catalyst with heteroatom ***1-h-NPClSC,has been synthesized and shown much improved performance towards ORR by manipulating the coordination environment of the Ag *** shows a high half wave potential(0.896 V)and a high turnover frequency(TOF)(5.9 s^(−1))at 0.85 V,which are higher than the previously reported Ag based catalysts and commercial Pt/C.A zinc-air battery with high peak power density of 270 mW·cm^(−2)is fabricated by using the Ag1-h-NPClSC as air *** high performance is attributed to(1)the hollow structure providing good mass transfer;(2)the single atom metal center structure providing high utility of the Ag;(3)heteroatom coordination environment providing the adjusted binding to the ORR *** functional theory(DFT)calculations show that the energy barrier for the formation of OOH*,which is considered as the rate determine step for ORR on Ag nanoparticles,is lowered on Ag1-h-NPClSC,thus improving the ORR *** work demonstrates that the well manipulated Ag based single atom catalysts are promising in electrocatalysis.

关键词： Ag single-atom heteroatom coordination oxygen reduction zinc-air battery

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《四库全书荟要》本《隋书》校勘价值考论

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唐史论丛 2024年第1期 285-297页

作者：丁新宇上海师范大学人文学院

清代的“四库全书工程”借修书而毁书,产生了极恶劣的影响。其主要成果《四库全书》毁誉参半。工程的另一成果《四库全书荟要》也被认为是《四库全书》的附庸,长期不受重视。因此,其中的《四库全书荟要》本(省称荟要本)《隋书》一直默... 详细信息

清代的“四库全书工程”借修书而毁书,产生了极恶劣的影响。其主要成果《四库全书》毁誉参半。工程的另一成果《四库全书荟要》也被认为是《四库全书》的附庸,长期不受重视。因此,其中的《四库全书荟要》本(省称荟要本)《隋书》一直默默无闻,至今无人研究。但我们发现,这一版本底本优良,参考版本众多,整理水平较高。其文本质量要优于武英殿本,更优于其他四库馆的成果,是一个较好的版本。2019年修订版《隋书》是在中华书局原点校本的基础上整理修订而成,参考了众多版本,代表了当前《隋书》研究的顶尖水平和最新成果,是当前的权威整理本。惜这一版本的整理情况不尽如人意,在有些方面还是遗留了问题。未被整理组注意的荟要本,则恰好能够修正其中一部分问题。这一版本在版本学和校勘学上有很大意义,值得研究。本文以此为契机,借助补校修订版《隋书》,阐发荟要本《隋书》的校勘价值。

关键词：校勘价值《四库全书荟要》《四库全书》《隋书》武英殿本四库全书版本学校勘学

De novo creation of popcorn-like fragrant foxtail millet

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Journal of Integrative Plant Biology 2023年第11期65卷 2412-2415页

作者： Yanyan Zhang Qiang He Shihui Zhang xinyu Man Yi sui Guanqing Jia Sha Tang Hui Zhi Chuanyin Wu Xianmin Diao Institute of Crop Sciences Chinese Academy of Agricultural SciencesBeijing 100081China Zhongyuan Research Center Chinese Academy of Agricultural SciencesXinxiang 453000China

Aroma plays a crucial role in the sensory appeal and enjoyment of food,and it significantly impacts the grain quality of cereals,thereby influencing the value and consumption of agricultural *** example,aromatic rice varieties like Basmati and Jasmine are renowned for their distinct aroma and command almost double the price of regular rice in the market.

关键词： cereal corn thereby

Intrafascicular Vagal Activity Recording and Analysis Based on Carbon Nanotube Yarn Electrodes

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Journal of Shanghai Jiaotong university(Science) 2020年第4期25卷 447-452页

作者： ARRANZ Javier GUO Jinyao YU Xiao WANG Jiaojiao CHAI xinyu WANG Jiguang sui Xiaohong School of Biomedical Engineering Shanghai Jiao Tong UniversityShanghai 200240China Suzhou Institute of Nano-Tech and Nano-Bionics Chinese Academy of SciencesSuzhou 215123JiangsuChina Shanghai Jiao Tong University School of Medicine affiliated Ruijin Hospital Shanghai 200025China

The vagus nerve carries sensory information from multiple organs in the *** recording of its activity and further processing is a key step for neuromodulation *** paper presents a specific algorithm for the processing and discrimination of intrafascicular recordings from the vagus nerve using the novel carbon nanotube yarn *** to four different neural waveforms were found,whose occurrence corresponded to distinct levels of anesthesia depth.

关键词： carbon nanotube yarn intrafascicular electrodes vagus nerves neural signals

Unsupervised machine learning for discovery of promising half-Heusler thermoelectric materials

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npj Computational Materials 2022年第1期8卷 306-314页

作者： Xue Jia Yanshuai Deng Xin Bao Honghao Yao Shan Li Zhou Li Chen Chen xinyu Wang Jun Mao Feng Cao Jiehe sui Junwei Wu Cuiping Wang Qian Zhang Xingjun Liu School of Materials Science and Engineering and Institute of Materials Genome&Big DataHarbin Institute of Technology518055ShenzhenP.R.China School of Science Harbin Institute of Technology518055ShenzhenP.R.China State Key Laboratory of Advanced Welding and Joining Harbin Institute of Technology150001HarbinP.R.China Department of Materials Science and Engineering College of MaterialsXiamen University361005XiamenP.R.China

hermoelectric materials can be potentially applied to waste heat recovery and solid-state cooling because they allow a direct energy conversion between heat and electricity and vice *** accelerated materials design based on machine learning has enabled the systematic discovery of promising *** we proposed a successful strategy to discover and design a series of promising half-Heusler thermoelectric materials through the iterative combination of unsupervised machine learning with the labeled known half-Heusler thermoelectric ***,optimized zT values of~0.5 at 925 K for p-type Sc_(0.7)Y_(0.3)NiSb_(0.97)Sn_(0.03)and~0.3 at 778 K for n-type Sc_(0.65)Y_(0.3)Ti_(0.05)NiSb were experimentally achieved on the same parent ScNiSb.

关键词： learning discovery ler

Blood Pressure Change in Intrafascicular Vagal Activities

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Journal of Shanghai Jiaotong university(Science) 2021年第1期26卷 47-54页

作者： GUO Jinyao LI Runhuan WANG Jiaojiao ARRANZ Javier LI Yiran CHAI xinyu WANG Jiguang sui Xiaohong School of Biomedical Engineering Shanghai Jiao Tong UniversityShanghai 200240China Shanghai Institute of Hypertension Ruijin Hospital affiliated to Shanghai Jiao Tong University School of MedicineShanghai 200025China Suzhou Institute of Nano-Tech and Nano-Bionics Chinese Academy of SciencesSuzhou 215123JiangsuChina

Baroreflex plays a significant role in modulating blood pressure for the human *** is known that activation of the vagal nerve related to baroreflex can lead to reductions of blood ***,how the vagal activities quantitatively relate with blood pressure can hardly be *** fine carbon nanotube yarn(CNTy)electrodes were adopted for recording intrafascicular vagal activities,synchronized with measurement of arterial blood pressure in a *** with a novel algorithm,the results preliminarily quantified that there were six clusters of neural spikes within recorded vagal activities,and the number of individual vagal spikes correspondingly varied with blood *** for Cluster 2,the neural activations decreased with arterial blood pressure *** study can shed lights on the quantified neural mechanism underlying the control of vagal activities on blood pressure,and guide the vagal-nerve neuromodulation for treating hypertension.

关键词： vagal nerve hypertension baroreflex signal processing neuromodulation carbon nanotube yarn(CNTy)electrodes

Phase Boundary Mapping in ZrNiSn Half-Heusler for Enhanced Thermoelectric Performance

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Research 2020年第1期2020卷 760-768页

作者： Xiaofang Li Pengbo Yang Yumei Wang Zongwei Zhang Dandan Qin Wenhua Xue Chen Chen Yifang Huang Xiaodong Xie xinyu Wang Mujin Yang Cuiping Wang Feng Cao Jiehe sui Xingjun Liu Qian Zhang Department of Materials Science and Engineering Institute of Materials Genome&Big DataHarbin Institute of TechnologyShenzhenGuangdong 518055China Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190China State Key Laboratory of Advanced Welding and Joining Harbin Institute of TechnologyHarbinHeilongjiang 150001China Department of Materials Science and Engineering Xiamen UniversityXiamenFujian 361005China Department of Science Harbin Institute of TechnologyShenzhenGuangdong 518055China

The solubility range of interstitial Ni in the ZrNi1+xSn half-Heusler phase is a controversial issue,but it has an impact on the thermoelectric *** this study,two isothermal section phase diagrams of the Zr-Ni-Sn ternary system at 973K and 1173 K were experimentally constructed based on the binary phase diagrams of Zr-Ni,Zr-Sn,and *** thermodynamic equilibrium phases were obtained after a long time of heating treatment on the raw alloys prepared by levitation *** of x<0:07 at 973 K and x<0:13 at 1173 K were clearly *** intermediate-Heusler phase with a partly filled Ni void was observed,which is believed to be beneficial to the lowered lattice thermal *** highest ZT value~0:71 at 973 K was obtained for ZrNi_(1.11)Sn_(1.04).The phase boundary mapping provides an important instruction for the further optimization of ZrNiSn-based materials and other systems.

关键词： ZrNi filled solubility

Nondestructive visualization of graphene on Pt with methylene blue surface modification

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Science China Materials 2022年第10期65卷 2763-2770页

作者： He Kang Yanhui Zhang Yun Wu Shike Hu Jing Li Zhiying Chen Yanping sui Shuang Wang Sunwen Zhao Runhan Xiao Guanghui Yu Songang Peng Zhi Jin xinyu Liu State Key Laboratory of Functional Materials for Informatics Shanghai Institute of Microsystem and Information TechnologyChinese Academy of SciencesShanghai 200050China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China Science and Technology on Monolithic Integrated Circuits and Modules Laboratory Nanjing Electronic Device InstituteNanjing 210016China Microwave Devices and Integrated Circuits Department Institute of MicroelectronicsChinese Academy of SciencesBeijing 100029China

Efficient large-scale nondestructive quality assessment of graphene on Pt is essential to the in-depth growth research and practical applications of ***,we present a very simple method for directly observing the domains and defects in graphene on Pt using an ordinary optical *** was achieved by modifying graphene on Pt using methylene blue(MB).Because the chemical activities of graphene and Pt surface differ significantly,the adsorption and reaction of MB on graphene and platinum surface *** can determine the distribution of graphene crystal domains and defects by comparing the colors in the optical *** addition,this characterization method causes no obvious damage to the Pt substrate and ***,it does not affect the recycling of the substrate or the subsequent characterization or application of *** study provides a nondestructive method for measuring the quality of graphene on Pt on a large scale,as well as a reference for the characterization and doping of other two-dimensional materials.

关键词： graphene Pt nondestructive visualization surface modification methylene blue

Balancing the anionic framework polarity for enhanced thermoelectric performance in YbMg_(2)Sb_(2) Zintl compounds

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Journal of Materiomics 2019年第4期5卷 583-589页

作者： Zongwei Zhang xinyu Wang Yijie Liu Chen Chen Honghao Yao Li Yin Xiaofang Li Shan Li Fan Zhang Fengxian Bai Jiehe sui Bo Yu Feng Cao Xingjun Liu Jun Mao Guoqiang Xie Qian Zhang Department of Materials Science and Engineering Institute of Materials Genome&Big DataHarbin Institute of TechnologyShenzhen518055China School of Science Harbin Institute of TechnologyShenzhen518055China State Key Laboratory of Advanced Welding and Joining Harbin Institute of TechnologyHarbin150001China Department of Physics and TcSUH University of HoustonHoustonTX77204USA Ningbo Fengcheng Advanced Energy Materials Research Institute Fenghua DistrictNingboZhejiang315500China

1-2-2-type Zintl phase compound has aroused great interest for potential thermoelectric ***,YbMg_(2)Sb_(2) is seldom studied due to the very low electrical conductivity resulting from the large difference in the electronegativity between Mg and *** this paper,we adjust the covalently bonded network of MgeSb by replacing part of the Mg with Zn which has the electronegativity closer to that of *** decreased polarity in the anionic framework offers more free distance for electrons for the enhanced Hall mobility and electrical *** with the increased point defect and the decreased lattice thermal conductivity by introduction of Zn,the maximum ZT value of ~0.8 at 773 K is achieved in YbMg_(0.9)Zn_(1.1)Sb_(2) which is~100% enhancement compared with that of YbMg_(2)Sb_(2).

关键词： Thermoelectric Zintl phase YbMg_(2)Sb_(2) Polarity Electronegativity