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Progress of crystalline carbon nitride in synthesis,atomic structure characterization and photocatalysis

Nano Research 2025年第1期18卷 455-476页

作者： Yueyang Tan Zhongyan Zhang Yayun Pu Zongzhao Sun Limin Huang school of Materials Science and Engineering Harbin Institute of TechnologyHarbin 150001China Department of Chemistry Southern University of Science and TechnologyShenzhen 518055China school of Traffic and Environment Shenzhen Institute of Information TechnologyShenzhen 518172China College of Chemistry and Chemical Engineering Linyi UniversityLinyi 276000China school of Optoelectronic Engineering Chongqing University of Posts and TelecommunicationsChongqing 400065China

Crystalline carbon nitride(CCN)has emerged as a highly promising semiconductor photocatalyst with unique properties,such as enhanced charge migration rate,reduced carrier recombination probability,narrow band gap and improved light-harvesting efficiency,which are suitable for a wide range of applications in solar-to-chemical conversion,energy storage,therapeutic and environmental pollution *** the past few years,there has been an increasing number of reviews on CCN ***,most of these reviews mainly focus on synthesis methods,modification and applications,with less emphasis on the relationship between structures and properties,as well as on indepth exploration of the crystalline *** electronic instability of CCN presents challenges for conventional characterization techniques to directly and thoroughly investigate the relationship between its intrinsic atom structure and photocatalytic *** mini-review not only highlights the progress in CCN-based photocatalysts,with a focus on molten-salt synthesis(including solid-salt-induced crystallization),but also emphasizes the atomic structure characterization by specifically introducing the differential phase contrast(DPC)scanning transmission electron microscopy(STEM)technique,which is essential for enhancing our understanding of the crystal structure and photocatalytic mechanisms of ***,the review outlines the photocatalytic performance and puts forward potential challenges on CCN *** review will provide a clearer understanding of the relationship in developing precise customization strategies for CCN materials and ultimately explain the regularity and specificity of the enhanced performance in targeted photocatalytic systems.

关键词： crystalline carbon nitride synthesis characterization photocatalysis

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Evaluation of transmission risk of respiratory particles under different ventilation strategies in an elevator

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Building Simulation 2024年第5期17卷 771-784页

作者： Liangyu Zhu Xian Li Bujin Feng Fan Liu school of Civil Engineering and Architecture Linyi UniversityLinyi276000China College of Agriculture Shandong Agricultural UniversityTaian271018China school of Environment and Architecture University of Shanghai for Science and TechnologyShanghai200093China

People in elevators are at risk of respiratory infection because the elevator cabin is crowded and has poor *** exhaled particles may be inhaled by the susceptible person,deposited on the surface and suspended in the elevator,which can result in direct and indirect ***,whether the air vent designs adopted in the elevator can effectively reduce the transmission risk of respiratory particles remains *** this study,the dispersion of particles under four common ventilation strategies used in the commercial elevator was investigated by proven computational fluid dynamics(CFD)*** flow field was simulated with the RNG κ-ξ turbulence model and the Lagrangian method was adopted to track particle *** effects of air vent layout and airflow rate on particle transmission were *** found that more than 50% of exhaled particles(average value)were suspended in the cabin and difficult to discharge under the investigated ventilation *** deposited fraction of particles on the susceptible person reached up to 39.14% for infiltration ventilation,which led to a high risk of contact *** the ventilation rate could not significantly reduce the inhalation proportion of particles due to the poor airflow distribution inside the elevator.A more proper ventilation strategy should be explored for the elevator to control transmission risk.

关键词： particle dispersion transmission risk elevator ventilation strategy computational fluid dynamics(CFD)

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Dynamic event-triggered leader-follower consensus of nonlinear multi-agent systems under directed weighted topology

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The Journal of China Universities of Posts and Telecommunications 2023年第6期30卷 3-10,21页

作者： Wu Yue Chen Xiangyong Qiu Jianlong Hu Shunwei Zhao Feng school of Automation and Electrical Engineering Linyi UniversityLinyi 277700China

This paper studies the dynamic event-triggered leader-follower consensus of nonlinear multi-agent systems(MASs)under directed weighted graph containing a directed spanning tree,and also considers the effects of disturbances and leader of non-zero control inputs in the ***,a novel distributed control protocol is designed for uncertain disturbances and leader of non-zero control inputs in ***,a novel dynamic event-triggered control(DETC)strategy is proposed,which eliminates the need for continuous communication between agents and reduces communication resources between *** introducing dynamic thresholds,the complexity of excluding Zeno behavior within the system is ***,the effectiveness of the proposed theory is validated through numerical simulation.

关键词： nonlinear multi-agent systems(MASs) leader-follower consensus dynamic event-triggered control(DETC) leader of non-zero control input

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Error Bound for the Generalized Complementarity Problem with Analytic Functions

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International Journal of Automation and computing 2012年第3期9卷 288-291页

作者： Hong-Chun Sun school of Sciences, linyi University, linyi 276005, PRC school of Sciences Linyi University Linyi PRC

In this paper, we consider the global error bound for the generalized complementarity problem (GCP) with analytic functions. Based on the new technique, we establish computable global error bound under milder conditio... 详细信息

关键词： Generalized complementarity problem (GCP) error bound analytic functions R0-function Lipschitz continuity.

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A privacy-preserving group encryption scheme with identity exposure

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Frontiers of Computer Science 2022年第5期16卷 237-238页

作者： Chuan-Kun WU school of Information Science and Engineering Linyi UniversityLinyi 276000China

1 Introduction At the end of December 2019,a new kind of contagious disease known as COVID-19 was found and spread *** event reflects that early whistleblowing is ***,the fear of potential over-responsibility could cause hesitation of some discoverers of potential critical events to blow the whistle at the earliest possible *** is noticed that,to set up a platform accepting anonymous messages from public as whistleblowing messages is not a good approach,because there might be a considerable amount of *** way to achieve this property is the anonymous authentication mechanism,such as group signature[1]and ring signature[2].However,whistleblowing with privacy protection has more security requirements that cannot be provided by group signatures and ring signatures.

关键词： signature preserving scheme

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Effects of asymmetric coupling and boundary on the dynamic behaviors of a random nearest neighbor coupled system

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Chinese Physics B 2024年第6期33卷 309-322页

作者：徐玲姜磊 school of Mathematical Sciences Sichuan Normal UniversityChengdu 610066China school of Mathematics and Statistics Linyi UniversityLinyi 276000China

This study investigates the dynamical behaviors of nearest neighbor asymmetric coupled systems in a confined ***, the study derivative analytical stability and synchronization conditions for the asymmetrically coupled system in an unconfined space, which are then validated through numerical simulations. Simulation results show that asymmetric coupling has a significant impact on synchronization conditions. Moreover, it is observed that irrespective of whether the system is confined, an increase in coupling asymmetry leads to a hastened synchronization pace. Additionally, the study examines the effects of boundaries on the system's collective behaviors via numerical experiments. The presence of boundaries ensures the system's stability and synchronization, and reducing these boundaries can expedite the synchronization process and amplify its effects. Finally, the study reveals that the system's output amplitude exhibits stochastic resonance as the confined boundary size increases.

关键词： asymmetric coupled confined space synchronization stochastic resonance stability

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Norm Equalities and Inequalities for Three Circulant Operator Matrices

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Acta Mathematica Sinica,English Series 2017年第4期33卷 571-590页

作者： Zhao Lin JIANG Yun Cheng QIAO Shu Dong WANG school of Sciences Linyi University Linyi 276005 P. R. China

In this paper, three new circulant operator matrices, scaled circulant operator matrices,diag-circulant operator matrices and retrocirculant operator matrices, are given respectively. Several norm equalities and inequalities for these operator matrices are proved. We show the special cases for norm equalities and inequalities, such as the usual operator norm and the Schatten p-norm. Pinching type inequality is also given for weakly unitarily invariant norms. These results are closely related to the nice structure of these special operator matrices. Furthermore, some special cases and specific examples are also considered.

关键词： Operator matrix norm scaled circulant diag-circulant retrocirculant

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Hierarchical Octahedral NazMnFe（CN）6 and Na2MnFe（CN）6@Ppy as Cathode Materials for Sodium-Ion Batteries

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Chinese Journal of Chemistry 2017年第4期35卷 415-419页

作者： Fangdong Hu Lin Li Xiaolei Jiang school of Chemistry and Chemical Engineering Linyi University Linyi Shandong 276005 China

The Na2MnFe（CN）6 is successfully synthesized by a simple co-precipitation method, and then coated with con- ducting polymers （PPy） on the surface of Na2MnFe（CN）6 particle. Interestingly, Na2MnFe（CN）6 and NazMnFe（CN）6@PPy both show hollow octahedral hierarchical structures with nanometer-sized subunits. Na2MnFe（CN）6@PPy exhibits a discharge capacity of 107 mAh·g^-1 after 150 cycles at a current density of 10 mA·g^-1. It can still remain 65 mAh,g I even the current density is increased to 200 mA·g^-1. This superior electro- chemical property could be ascribed to unique hierarchical architecture as well as improved electronic conductivity.

关键词： hierarchical structures conducting polymers energy conversion electrochemistry

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Chair-like N_(6)^(6-) in AlN_(3) with high-energy density

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Chinese Physics B 2023年第12期32卷 150-157页

作者：郭世泰徐真真耿延雷芮琦杜殿臣李建福王晓丽 school of Physics and Electronic Information Yantai UniversityYantai 264005China school of Physics and Electronic Engineering Linyi UniversityLinyi 276005China

The search for stable novel polynitrogen clusters has garnered significant attention in the field of energetic materials due to their potential applications as high-energy-density *** this study,a chair-like N_(6)^(6-) ring with N-N single bonds in the AlN_(3) compound is theoretically predicted through first-principles calculations in conjunction with an unbiased structure searching *** predicted AlN_(3) phase exhibits high kinetic and thermodynamic stability,along with a high energy density of 5.04 kJ/g relative to AlN and N_(2) ***,its detonation velocity and pressure are estimated to reach 12.93 km/s and 1009.63 kbar,*** values are greater than those of TNT and HMX,positioning it as a promising candidate for high-energy-density materials in the field of explosive *** analysis of electronic properties and the related chemical bonding patterns indicates that the compounds are stabilized by both Coulomb interactions and covalent *** importantly,the calculated formation of enthalpy indicates that the N_(6)^(6-)anions within AlN_(3) can be synthesized by compressing AlN and N_(2) at a moderate pressure(46 GPa).These findings present a viable approach for synthesizing and stabilizing the all-nitrogen N_(6)^(6-)anions.

关键词： high pressure aluminum nitride electronic property high-energy-density materials

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Criteria for strong H-tensors

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Frontiers of Mathematics in China 2016年第3期11卷 577-592页

作者： Yiju WANG Kaili ZHANG Hongchun SUN school of Management Science Qufu Normal University Rizhao 276800 China school of Science Linyi University Linyi 276000 China

H-tensor is a new developed concept which plays an important role in tensor analysis and computing. In this paper, we explore the properties of H-tensors and establish some new criteria for strong H-tensors. In particular, based on the principal subtensor, we provide a new necessary and sufficient condition of strong H-tensors, and based on a type of generalized diagonal product dominance, we establish some new criteria for identifying strong H-tensors. The results obtained in this paper extend the corresponding conclusions for strong H-matrices and improve the existing results for strong H-tensors.

关键词： Strong H-tensor generalized diagonal dominance multilinearalgebra weak irreducibility

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