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A pore-confined strategy for synthesizing CoFe nanoparticles in mesoporous biocarbon matrix as advanced bifunctional oxygen electrocatalyst for zinc-air battery

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Rare Metals 2024年第11期43卷 5757-5768页

作者： Xiang-Jun Zheng hong-yu gong Na Zhang Wen-Hua Shi Qing Sun yu-Hang Qian Li-Kun Jiang Xue-Cheng Cao Rui-Zhi Yang Chang-Zhou yuan School of Environmental and Chemical Engineering Jiangsu University of Science and TechnologyZhenjiang 212003China Advanced Materials Institute Qilu University of Technology(Shandong Academy of Sciences)Jinan 250014China Automotive Engineering Research Institute Jiangsu UniversityZhenjiang 212013China College of Energy Soochow Institute for Energy and Materials InnovationSSoochow UniversitySuzhou 215006China School of Materials Science and Engineering University of JinanJinan 250014China

Designing rational transition-metal/carbon composites with highly dispersed and firmly anchored nanoparticles(NPs)to prevent agglomeration and shedding is crucial for realizing excellent electrocatalytic ***,a biomass pore-confined strategy based on mesoporous willow catkin is explored to obtain uniformly dispersed CoFe NPs in N-doped carbon nanotubes and hollow carbon fibers(CoFe@N-CNTs/HCFs).The resultant catalyst exhibits enhanced electrocatalytic performance,which affords a half-wave potential of 0.86 V(***)with a limited current density of 6.0 mA·cm^(-2)for oxygen reduction reaction and potential of 1.67 V(***)at 10 mA·cm^(-2)in 0.1 M KOH for oxygen evolution *** applied to rechargeable zinc-air batteries,a maximum power density of 340 mW·cm^(-2)and long-term cyclic durability over 800 h are *** superior bifunctional electrocatalytic activities are ascribed to the biocarbon matrix with abundant mesopores and unobstructed hollow channels,CoFe NPs with high dispersion and controllable nanoscale and the hybrid composite with optimized electronic *** work presents an effective approach for constraining the size and dispersion of NPs in a low-cost biocarbon substrate,offering valuable insights for designing advanced oxygen electrocatalysts.

关键词： CoFe nanoparticles Biocarbon Pore-confined strategy Bifunctional oxygen electrocatalyst Zinc-air battery

A Contrastive Study of Hedges in English Theses for ***

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中国民航飞行学院学报 2010年第5期21卷 67-70页

作者： Wang Xiao-hong gong yu-er Foreign Language Teaching and Research Department Huaihai Institute of Technology Jiangsu Province 222005

The study ventures to probe into the incidence of hedges in the conclusion part of English theses on the basis of carefully chosen samples,two self-compiled English theses corpora, namely,the Corpus of Native English Speakers(CNES) and the Corpus of Chinese English Learners (CCEL).The findings clearly indicate that hedges used in CCEL shares some similarities with those in CNES,but the differences between them outweigh the *** paper aims to raise Chinese EFL students' awareness of hedges and improve their skills in thesis writing.

关键词：《中国民航飞行学院学报》期刊摘要编辑部

Insight into role of Ni/Fe existing forms in reversible oxygen catalysis based on Ni-Fe single-atom/nanoparticles and N-doped carbon

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Rare Metals 2022年第12期41卷 4034-4040页

作者： hong-yu gong Xiu Liang Guan-Liang Sun Dong-Wei Li Xiang-Jun Zheng Huan Shi Kai Zeng Guan-Chen Xu Yong Li Rui-Zhi Yang Chang-Zhou yuan Advanced Materials Institute Qilu University of Technology(Shandong Academy of Sciences)Jinan 250014China Shandong Saikesaisi Hydrogen Energy Co. LtdJinan 250100China School of Environmental and Chemical Engineering Jiangsu University of Science and TechnologyZhenjiang 212003China School of Materials Science&Engineering University of JinanJinan 250014China College of Energy Soochow Institute for Energy and Materials InnovationsSoochow UniversitySuzhou 215006China

Oxygen catalysis reactions play essential roles in metal-air batteries,fuel cells,water electrolysis and artificial photosynthesis,with their development receiving significant attention in recent *** the structure-activity relationship plays an important role in the construction and performance optimization of reversible oxygen catalyst.

关键词： catalyst catalysis reversible

Recent progress on photoactive nonprecious transition-metal complexes

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Science China Chemistry 2025年第1期68卷 46-95页

作者： Zhong-Liang gong hong-Jie Zhang Yan Cheng Jianxun Liu yuhan Ai Yaqin Li Zhihui Feng Qiong Zhang Shaolong gong Yong Chen Chang-Jiang Yao yuan-yuan Zhu Liang-Jin Xu yu-Wu Zhong CAS Key Laboratory of Photochemistry Institute of Chemistry Chinese Academy of Sciences State Key Laboratory of Structural Cemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences School of Chemistry and Chemical Engineering Anhui Key Laboratory of Advanced Catalytic Materials and Reaction EngineeringHefei University of Technology State Key Laboratory of Explosion Science and Safety Protection School of Mechatronical Engineering Beijing Institute of Technology College of Chemistry and Molecular Sciences Hubei Key Lab on Organic and Polymeric Optoelectronic Materials Wuhan University School of Chemistry and Chemical Engineering Anhui University Key Laboratory of Photochemical Conversion and Optoelectronic Materials & CAS-HKU Joint Laboratory on New Materials Technical Institute of Physics and Chemistry Chinese Academy of Sciences

Photoactive complexes of nonprecious transition metals, mainly including those in the first-row and partially the second-row of the Periodic table of elements, have received increasing attention in view of their low cost and long-term sustainability. They are recognized as promising alternatives to noble transition metal complex congeners that have been extensively studied in optoelectronic devices, artificial photosynthesis, photocatalysis, biodiagnostics, and therapeutics, etc. This review is devoted to a comprehensive summary on the classical and recent advances on photoactive nonprecious transition metal complexes, including photoactive Zr, V, Cr, Mo, and W complexes, Mn complexes and hybrids, Fe, Co, Ni, and Cu complexes, and Zn and Cd complexes and hybrids. A particular focus is given on the molecular design, modulation of photophysical and photochemical properties, and applications of the representative and lately-developed nonprecious metal complexes. In addition, a perspective on the future development in this field is provided at the end of this review.

关键词： photoactive metal complexes earth-abundant metals nonprecious metal complexes luminescence photochemistry

STUDY　OF　THE　FLUORESCENCE　SYSTEM　OF　RIBONUCLEIC　ACID－Tb（Ⅲ）　AND　THE　DETERMINATION　OF　RIBONUCLEIC　ACID

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Chinese Chemical Letters 1995年第2期6卷 135-138页

作者： Jing He YANG Chang Lun TONG Nian Qin JIE hong yu gong Zu Quan GAO Hua Bin ZOU(Deptrtment of Chemistrg Shandong University, Jinan, 250100)

t was found that ribonucleic acid (RNA) complexes with Tb(Ⅲ) at pH+5.0-6.5. which then emits strong characterlstlc fluorescerlstlc fluorescence of Tb(Ⅲ). The excitstion and emission wavelengths are 288nm, 4f4nm and 545nm, respectively.A linear relationship is obtained between the fluorescence intensity and RNA concentration in the range of 0.1μg/ml- 10 μg/ml. The detection limit is 6.0×10-8mol/L. This method can be used to determin RNA in tie presence of adenylic acid, uridylic acid and cytidylic acid.

关键词： ACID RIBONUCLEIC Tb SYSTEM DETERMINATION AND

Engine Misfire Fault Detection Based on the Channel Attention Convolutional Model

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Computers, Materials & Continua 2025年第1期82卷 843-862页

作者： Feifei yu Yongxian Huang Guoyan Chen Xiaoqing Yang Canyi Du Yongkang gong School of Mechatronic Engineering Guangdong Polytechnic Normal UniversityGuangzhou510665China School of Automotive and Transportation Engineering Guangdong Polytechnic Normal UniversityGuangzhou510665China

To accurately diagnosemisfire faults in automotive engines,we propose a Channel Attention Convolutional Model,specifically the Squeeze-and-Excitation Networks(SENET),for classifying engine vibration signals and precisely pinpointing misfire *** the experiment,we established a total of 11 distinct states,encompassing the engine’s normal state,single-cylinder misfire faults,and dual-cylinder misfire faults for different *** collection was facilitated by a highly sensitive acceleration signal collector with a high sampling rate of 20,*** collected data were methodically divided into training and testing sets based on different experimental groups to ensure generalization and prevent overlap between the two *** results revealed that,with a vibration acceleration sequence of 1000 time steps(approximately 50 ms)as input,the SENET model achieved a misfire fault detection accuracy of 99.8%.For comparison,we also trained and tested several commonly used models,including Long Short-Term Memory(LSTM),Transformer,and Multi-Scale Residual Networks(MSRESNET),yielding accuracy rates of 84%,79%,and 95%,*** underscores the superior accuracy of the SENET model in detecting engine misfire faults compared to other ***,the F1 scores for each type of recognition in the SENET model surpassed 0.98,outperforming the baseline *** analysis indicated that the misclassified samples in the LSTM and Transformer models’predictions were primarily due to intra-class misidentifications between single-cylinder and dual-cylinder misfire *** delve deeper,we conducted a visual analysis of the features extracted by the LSTM and SENET models using T-distributed Stochastic Neighbor Embedding(T-SNE)*** findings revealed that,in the LSTMmodel,data points of the same type tended to cluster together with significant ***,in the SENET model,data points of various types were more widely and evenly dispersed,demonstra

关键词： Channel attention SENET model engine misfire fault fault detection

Thickness and sp3 bond modulation of（Ti/tetrahedral amorphous carbon）_n multilayer coatings

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Tungsten 2025年第1期7卷 152-160页

作者： Zhi-Jun Xie Jia-Lin Li Ling gong Xiang-Li Zhong hong-Jia Song Jin-Bin Wang National-Provincial Laboratory of Special Function Thin Film Materials School of Materials Science and Engineering Xiangtan University

The durability of wear-resistant tetrahedral amorphous carbon（ta-C） coatings is intimately linked to their thickness and the concentration of *** enhance the lifespan of the coatings,we have prepared a multilayer coating consisting of alternating layers of Ti and ta-C,denoted as（Ti/ta-C）_n,using arc ion plating.A multi-layer structure in conjunction with stage cooling is employed to enhance the thickness and promote *** results indicate that the ID/IGvalue,representing the ratio of the intensity of the D peak to that of the G peak in Raman spectroscopy,decreases from 0.85 when no stage cooling is applied to 0.35 when stage cooling is employed,suggesting an enhancement in the fraction of sp3bonds within the *** obtained（Ti/ta-C）_n multilayer coating without peeling off has a maximum thickness of 1.14 μm,which is almost double that of the ta-C coating single layer *** the same time,the coating has a low coefficient of friction,down to 0.069,and maintains excellent friction properties with a wear rate of 3.4×10-6mm3·N-1·*** results conclusively show that the preparation technology can enhance both thickness and sp3bonding in ta-C coatings,significantly expanding their utility across tools,molds,and precision engineering components.

关键词： Arc ion plating Multilayer structure sp3 bond Ta-C coating Wear resistance

Main Feature and Potential Seismic Capability of Active Fault Belts in the Chengdu Depression

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Earthquake Research in China 1997年第1期11卷 61-70页

作者： Tang Rongchang,Huang Zuzhi,Qian hong,gong yu,Wen Dehua,Ma Senghao,and Zhou RongjunSeismological Bureau of Sichuan Province,Chengdu 610041,China

Chengdu fault depression is an important Quaternary basin in the piedmont of Longmenshan *** and evolution of the fault depression are entirely controlled by the Longmenshan piedmont fault and the Longquanshan *** the late Quaternary,Chengdu fault depression has been subjected to an NW-SE oriented *** NE or NNE trending faults inside the depression or near its margins show thrust slip,resulting in moderate and strong earthquakes along the piedmont Longmenshan fault,the western slop Longquanshan fault,and Pujiang-Xinjin-Chengdu-Deyang *** is indicated that three faults as mentioned above have the potential capability for the occurrence of moderate earthquakes.

关键词： Chengdu depression Activity in later Quaternary Postential seismic capability

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二维无序电子系统子带间的杂质散射效应

物理学报 1993年第1期42卷 106-113页

作者：杨永宏邢定钰龚昌德南京大学物理系理论物理中心南京210008

借助于格林函数方法,研究了二维无序电子系统子带间杂质散射对电导率和霍耳系数的量子相干修正的影响。结果表明当电子从单带占据过渡到双带占据时,电导率和霍耳系数均发生跨越行为。

关键词：无序杂质散射电导率电子