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Visible light-Induced Photocatalysis:Self-Fenton Degradation of p-CIPhOH Over Graphitic Carbon Nitride by a Polyethylenimine Bifunctional Catalyst

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Transactions of Tianjin University 2024年第2期30卷 130-139页

作者： Yuan Bai Shuangjun li Bolin Yin jinpeng Zhao Hexing li Key Laboratory of Resource Chemistry of Ministry of Education Shanghai Key Laboratory of Rare Earth Functional MaterialsCollege of Chemistry and Materials ScienceShanghai Normal UniversityShanghai 200234China

Deep degradation of organic pollutants by sunlight-induced coupled photocatalytic and Fenton (photo-Fenton) reactions is of immense importance for water purification. In this work, we report a novel bifunctional catalyst (Fe-PEI-CN) by codoping graphitic carbon nitride (CN) with polyethyleneimine ethoxylated (PEI) and Fe species, which demonstrated high activity during p-chlorophenol (p-ClPhOH) degradation via H_(2)O_(2) from the photocatalytic process. The relationship between the catalytic efficiency and the structure was explored using diff erent characterization methods. The Fe modification of CN was achieved through Fe-N coordination, which ensured high dispersion of Fe species and strong stability against leaching during liquid- phase reactions. The Fe modification initiated the Fenton reaction by activating H_(2)O_(2) into ·OH radicals for deep degradation of p-ClPhOH. In addition, it eff ectively promoted light absorption and photoelectron-hole (e-h ^(+) ) separation, corresponding to improved photocatalytic activity. On the other hand, PEI could significantly improve the ability of CN to generate H_(2)O_(2) through visible light photocatalysis. The maximum H_(2)O_(2) yield reached up to 102.6 μmol/L, which was 22 times higher than that of primitive CN. The cooperation of photocatalysis and the self-Fenton reaction has led to high-activity mineralizing organic pollutants with strong durability, indicating good potential for practical application in wastewater treatment.

关键词： Fe-PEI-CN bifunctional catalyst Photo-Fenton p-chlorophenol(p-ClPhOH)degradation Synergetic effect

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基于文献计量学的国内外药食同源及食疗领域研究热点分析

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护理研究 2024年第19期38卷 3457-3467页

作者：李进鹏曹妍赵奕雯郭丹丹蒋尔丹张欢朱瑞芳韩世范山西全科护理企业管理有限公司山西030001 山西医学期刊社有限责任公司山西医科大学山西医科大学第一医院

目的:基于文献计量学调查国内外药食同源及食疗领域研究现状,分析研究热点及研究趋势,为食疗领域研究提供指导。方法:计算机检索PubMed、Web of Science、中国知网(CNKI)、万方数据库、维普数据库(VIP)、中国生物医学文献数据库(CBM)等... 详细信息

目的:基于文献计量学调查国内外药食同源及食疗领域研究现状,分析研究热点及研究趋势,为食疗领域研究提供指导。方法:计算机检索PubMed、Web of Science、中国知网(CNKI)、万方数据库、维普数据库(VIP)、中国生物医学文献数据库(CBM)等国内外数据库中关于药食同源及食疗领域研究,检索时限为2014年1月1日-2024年8月24日,采用CiteSpace 6.2.R6软件对文献相关信息进行可视化分析。结果:共纳入中文文献1765篇、英文文献1622篇;国内外近10年该领域发文量总体均呈上升趋势;国内该领域的优质期刊有《中国中医基础医学杂志》《中华中医药杂志》《护理研究》等。国外该领域发文量排名前3位的期刊是Nutrients、Scientific Reports、International Journal of Molecular Sciences。国内形成了3个主要的研究团队,分别是以谢梦洲、陈光宇、瞿昊宇等为主的团队,以韩世范、朱瑞芳、冯耀清为主的团队,以辛宝、任晓梅、钱文文等为主的团队,团队之间缺乏合作;国外形成4个团队,团队之间合作较多;国内高频关键词为中医食疗、糖尿病、养生、高血压、数据挖掘等,国外高频关键词为Mediterranean diet、ketogenic diet等。结论:国内外药食同源及食疗领域研究不断受到重视,国内外研究的共同点在于均重视对高血压、糖尿病、癌症等慢性病及肠道菌群的研究,不同点在于国外研究重视对生酮饮食、地中海饮食、分子机制、蛋白结构、基因表达等方面的研究,而国内重视中医食疗、护理、食疗养生等方面的研究。国内外研究各有重点,应取长补短,加强合作,共同发展。同时,国内研究人员及研究机构应加强合作,促进该领域研究深入发展,加速科研成果的转化,惠及亚健康及慢性病人群。

关键词：药食同源食疗文献计量学研究热点可视化分析护理

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Numerical Analysis of Flow-Induced Vibration and Noise Generation in a Variable Cross-Section Channel

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Fluid Dynamics & Materials Processing 2023年第12期19卷 2965-2980页

作者： Youhao Wang Chuntian Zhe Chang Guo jinpeng li Jinheng li Shen Cheng Zitian Wu Suoying He Ming Gao Shandong Engineering Laboratory for High-Efficiency Energy Conservation and Energy Storage Technology&Equipment School of Energy and Power EngineeringShandong UniversityJinan250061China School of Energy and Power Engineering Qilu University of Technology(Shandong Academy of Sciences)Jinan250301China Shandong Beinuo Cooling Equipment Co. Ltd.Dezhou253000China

Flow channels with a variable cross-section are important components of piping system and are widely used in variousfields of *** afinite element method and modal analysis theory,flow-induced noise,mode shapes,and structure-borne noise in such systems are investigated in this *** results demonstrate that the maximum displacement and equivalent stress are located in the part with variable cross-sectional *** aver-age excitation force on theflow channel wall increases with theflow *** maximum excitation force occurs in the range of 0–20 Hz,and then it decreases gradually in the range of 20–1000 ***,as theflow velocity rises from 1 to 3 m/s,the overall sound pressure level associated with theflow-induced noise grows from 49.37 to 66.37 ***,the overall sound pressure level associated with the structure-borne noise rises from 40.27 to 72.20 *** theflow velocity is increased,the increment of the structure-borne noise is higher than that of theflow-induced noise.

关键词： Variable cross-section flow channel noise modal analysis structure-borne noise

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Interface-induced formation of onion-like alloy nanocrystals by defects engineering

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Nano Research 2016年第2期9卷 584-592页

作者： Wei Jia Yuen Wu Yifeng Chen Dongsheng He jinpeng li Yu Wang Zhuo Wang Wei Zhu Chen Chen Qing Peng Dingsheng Wang Yadong li Department of Chemistry and Collaborative Innovation Center for Nanomaterial Science and Engineering Tsinghua UniversityBeijing 100084 China Center of Advanced Nanocatalysis University of Science and Technology of China (CAN-USTC) Hefei 230026 China

The ability to controlled introduction of defects, particularly twin defects in Pt-based nanocrystals （NCs） provides a possibility to regulate the performance of Pt-based nanocatalyst. However, because of the high internal strain energy existed in twinned structures, the fabrication of defects in Pt-based NCs is sufficiently challenging. Here we demonstrate a ＂low-temperature interface-induced assembly＂ approach that provides precise control over Pt-Cu nanoparticles assembled at the hexadecylamine/water interface, yielding onion-like Pt-Cu NCs exposed a high density of twin defects. Moreover, a bending mechanism is proposed to elucidate the appearance of twin defects and lattice expanding （contraction） based on aberration corrected scanning transmission electron microscopy analysis. This work opens new routes to engineer defects in metal- based alloy NCs, enabling more opportunities in catalysis.

关键词： alloy nanocrystals assembly electroxidation twin defects interface

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Buried interface management via bifunctional NH_(4)BF_(4)towards efficient CsPbI_(2)Br solar cells with a V_(oc)over 1.4 V

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Journal of Energy Chemistry 2024年第2期89卷 364-370,I0009页

作者： Fazheng Qiu Ming-Hua li jinpeng Wu Jin-Song Hu School of Materials Science and Engineering NingboTech UniversityNingbo 315100ZhejiangChina Beijing National Laboratory for Molecular Sciences(BNLMS) Institute of ChemistryChinese Academy of SciencesBeijing 100190China College of Chemical Engineering Beijing Advanced Innovation Center for Soft Matter Science and EngineeringBeijing University of Chemical TechnologyBeijing 100029China School of Chemical Sciences University of Chinese Academy of SciencesBeijing 100049China

CsPbI_(2)Br perovskite solar cells(PSCs)have drawn tremendous attention due to their suitable bandgap,excellent photothermal stability,and great potential as an ideal candidate for top cells in tandem solar ***,the abundant defects at the buried interface and perovskite layer induce severe charge recombination,resulting in the open-circuit voltage(V_(oc))output and stability much lower than ***,a novel buried interface management strategy is developed to regulate interfacial carrier dynamics and CsPbI_(2)Br defects by introducing ammonium tetrafluoroborate(NH_(4)BF_(4)),thereby resulting in both high CsPbI_(2)Br crystallization and minimized interfacial energy ***,NH_(4)^(+)ions could preferentially heal hydroxyl groups on the SnO_(2)surface and balance energy level alignment between SnO_(2)and CsPbI_(2)Br,enhancing charge transport efficiency,while BF_(4)^(-)anions as a quasi-halogen regulate crystal growth of CsPbI_(2)Br,thus reducing perovskite ***,it is proved that eliminating hydroxyl groups at the buried interface enhances the iodide migration activation energy of CsPbI_(2)Br for strengthening the phase *** a result,the optimized CsPbI_(2)Br PSCs realize a remarkable efficiency of 17.09%and an ultrahigh V_(oc)output of 1.43 V,which is one of the highest values for CsPbI_(2)Br PSCs.

关键词： Inorganic perovskite Buried interface Defect Stability Open-circuit voltage loss

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Application of a Nanostructured Composite Material Constructed by Self-Assembly of Titanoniobate Nanosheets and Cobalt Porphyrin to Electrocatalytic Reduction of Oxygen

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Chinese Journal of Chemistry 2016年第10期34卷 1021-1026页

作者： jinpeng li Xiaobo Zhang Binbin Pan Jiasheng Xu lin liu Juanjuan Ma Min Yang Zhenye Zhang Zhiwei Tong School of Chemical Engineering Huaihai Institute of Technology Lianyungang Jiangsu 222005 China School of Chemical Engineering and Technology China University of Mining and Technology Xuzhou Jiangsu 221116 China College of Chemistry and Chemical Engineering Lanzhou University Lanzhou Gansu 730000 China SORST Japan Science and Technology Agency (JST) Kawaguchi Center Building 4-1-8 Kawaguchi-shi Saitama 332-0012 Japan

A novel layered nanocomposite was fabricated by the self-assembly of TiNbOs-nanosheets and 5,10,15,20- tetrakis（N-methylpyridinium-4-yl）porphyrinatocobalt（III）（CoTMPyP）. The product was characterized by a variety of analytical techniques such as XRD, EDX, Zeta potential, AFM, UV-vis, IR and SEM, the guest species were intercalated into the interlayer gallery of KTiNbO5 successfully. The electrochemical property of TiNbO5-CoTMPyP as an electrode modifying material was examined by cyclic voltammetry test in PBS solution （pH = 7）, and the hybrid exhibited excellent electrocatalytical property towards oxygen reduction with the peak potential shifting from -0.703 V （bare GCE） to -0.278 V （modified electrode）. The result also indicated that the oxygen molecule was reduced to H2O2 by a two-electron process.

关键词： layered material metalloporpbyrin exfoliation self-assembly oxygen reduction

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Sub-nm ruthenium cluster catalyst for decomposition as an efficient and robust and synthesis of ammonia： Break the ＂size shackles＂

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Nano Research 2018年第9期11卷 4774-4785页

作者： jinpeng li Weiyang wang Wenxing Chen Qinmei Gong Jun Luo Ruoqian lin Huolin Xin Hui Zhang Dingsheng wang Qing Peng Wei Zhu Chen Chen Yadong li Department of Chemistry Tsinghua University Beijing 100084 China The Center of New Energy Materials and Technology College of Chemistry and Chemical Engineering Southwest Petroleum University Chengdu 610500 China Center for Electron Microscopy Tianjin University of Technology Tianjin 300384 China Center for Functional Nanomaterials Brookhaven National Laboratory Upton New York 11973 USA

Downsizing to sub-nm is a general strategy to reduce the cost of catalysts. However, theoretical Wulff-constructed model suggests that sub-nm clusters show little activity for various reactions such as ammonia decomposition and ammonia synthesis because of the lack of active sites. As clusters may deviate from the ideal model construction under reaction conditions, a host-guest strategy to synthesize thermally stable 1.0 run monodispersed Ru dusters by the pyrolysis of MIL-101 hosts is reported here to verify the hypothesis. For ammonia decomposition, the activity of the Ru clusters is 25 times higher than that of commercial Ru/active carbon （AC） at full-conversion temperature, while for ammonia synthesis, the activity of the Ru dusters is 500 times as high as that of promoted Ru NPs counterpart. The catalyst also maintains its activities for 40 h without any increase in the size. This model can be used to develop a host-guest strategy for designing thermally stable sub-nm clusters to atomic-efficiently catalyze reactions.

关键词： sub-nm Ru cluster synthesis design ammonia decomposition ammonia synthesis metal-organic frameworks

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Aggregation-based dual heterogeneous task allocation in spatial crowdsourcing

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Frontiers of Computer Science 2024年第6期18卷 186605-186605页

作者： liN Xiaochuan WEI Kaimin li Zhetao CHEN jinpeng PEI Tingrui College of Information Science and Technology & Cyberspace Security Jinan University National & Local Joint Engineering Research Center of Network Security Detection and Protection Technology Guangdong Provincial Key Laboratory of Data Security and Privacy Protection School of Computer Science Beijing University of Posts and Telecommunications

Spatial crowdsourcing (SC) is a popular data collection paradigm for numerous applications. With the increment of tasks and workers in SC, heterogeneity becomes an unavoidable difficulty in task allocation. Existing researches only focus on the single-heterogeneous task allocation. However, a variety of heterogeneous objects coexist in real-world SC systems. This dramatically expands the space for searching the optimal task allocation solution, affecting the quality and efficiency of data collection. In this paper, an aggregation-based dual heterogeneous task allocation algorithm is put forth. It investigates the impact of dual heterogeneous on the task allocation problem and seeks to maximize the quality of task completion and minimize the average travel distance. This problem is first proved to be NP-hard. Then, a task aggregation method based on locations and requirements is built to reduce task failures. Meanwhile, a time-constrained shortest path planning is also developed to shorten the travel distance in a community. After that, two evolutionary task allocation schemes are presented. Finally, extensive experiments are conducted based on real-world datasets in various contexts. Compared with baseline algorithms, our proposed schemes enhance the quality of task completion by up to 25% and utilize 34% less average travel distance.

关键词： task allocation aggregation shortest path dual heterogeneous spatial crowdsourcing

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Brain Encoding and Decoding in fMRI with Bidirectional Deep Generative Models

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Engineering 2019年第5期5卷 948-953页

作者： Changde Du jinpeng li lijie Huang Huiguang He Research Center for Brain-Inspired Intelligence and National Laboratory of Pattern Recognition Institute of AutomationChinese Academy of Sciences(CAS)Beijing 100190China School of Artificial Intelligence University of Chinese Academy of SciencesBeijing 100049China Center for Excellence in Brain Science and Intelligence Technology Chinese Academy of SciencesShanghai 200031China

Brain encoding and decoding via functional magnetic resonance imaging(fMRI)are two important aspects of visual perception *** previous researchers have made significant advances in brain encoding and decoding models,existing methods still require improvement using advanced machine learning *** example,traditional methods usually build the encoding and decoding models separately,and are prone to overfitting on a small *** fact,effectively unifying the encoding and decoding procedures may allow for more accurate *** this paper,we first review the existing encoding and decoding methods and discuss the potential advantages of a“bidirectional”modeling ***,we show that there are correspondences between deep neural networks and human visual streams in terms of the architecture and computational ***,deep generative models(e.g.,variational autoencoders(VAEs)and generative adversarial networks(GANs))have produced promising results in studies on brain encoding and ***,we propose that the dual learning method,which was originally designed for machine translation tasks,could help to improve the performance of encoding and decoding models by leveraging large-scale unpaired data.

关键词： Brain encoding and decoding Functional magnetic resonance imaging Deep neural networks Deep generative models Dual learning

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Evaluating the moderated-mediation effects of switchingcosts in the link between social capital and NPD performance

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Journal of Management Science and Engineering 2024年第2期9卷 161-176页

作者： Yi li Nelson Oly Ndubisi Gang li jinpeng Xu School of Economics&Management Xidian UniversityXi'anChina College of Business&Economics Qatar UniversityDohaQatar School of Management Xi'an Jiao Tong UniversityXi'anChina The State Key Lab for Manufacturing Systems Engineering Xi'anChina The Key Laboratory of the Ministry of Education for Process Control and Efficiency Projects Xi'anChina

In this study,we explore the causes and performance outcomes of switching costs in the context of new product development(NPD)from both the supplier and customer perspectives,and discuss the role that switching costs play as moderators and mediators in the relationship between social capital and NPD *** on data from 214 Chinese manufacturers,we employ the structural equation model to test our conceptual model and *** results indicate that relationship quality and customer involvement positively and negatively affect switching costs,respectively,and that switching costs negatively affect NPD *** costs mediate and moderate the relationship between social capital and NPD ***,switching costs significantly and positively moderate the relationship between relationship quality and NPD *** the other hand,switching costs insignificantly and negatively moderate the relationship between customer involvement and NPD *** theoretical and managerial implications of the findings are discussed.

关键词： Social capital New product development(NPD) Performance Switching costs Moderated mediation analysis China

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