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"Small amount for multiple times" of H_(2)O_(2) feeding way in MoS_(2)-Fex heterogeneous fenton for enhancing sulfadiazine degradation

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Chinese Chemical Letters 2022年第3期33卷 1365-1372页

作者： Zhuan Chen cheng lian Kai Huang Jiahui Ji Qingyun Yan Jinlong Zhang Mingyang Xing Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering Feringa Nobel Prize Scientist Joint Research CenterFrontiers Science Center for Materiobiology and Dynamic ChemistryInstitute of Fine ChemicalsSchool of Chemistry and Molecular EngineeringEast China University of Science and TechnologyShanghai 200237China Shanghai Engineering Research Center for Multi-media Environmental Catalysis and Resource Utilization East China University of Science and TechnologyShanghai 200237China

In recent years, MoS_(2) catalyzed/cocatalyzed Fenton/Fenton-like systems have attracted wide attention in the field of pollution control, but there are few studies on the effect of H_(2)O_(2) feeding way on the whole Fenton process. Here, we report a new type of composite catalyst (MoS_(2)-Fe_(x)) prepared in a simple way with highly dispersed iron to provide more active sites. MoS_(2)-Fe_(x) was proved to possess selectivity for singlet oxygen (^(1)O_(2)) in effectively degrading sulfadiazine with a wide pH adaptability (4.0~10.0). Importantly, the mechanism of the interaction between H_(2)O_(2) and MoS_(2) on the Fenton reaction activity was revealed through the combination of experiment and density functional theory (DFT) calculations. Compared to the traditional “a large amount for one time” feeding way of H_(2)O_(2), the “small amount for multiple times” of H_(2)O_(2) feeding way can increase the degradation rate of sulfadiazine from 36.9% to 91.1% in the MoS_(2)-Fe_(x) heterogeneous Fenton system. It is demonstrated that the “small amount for multiple times” of H_(2)O_(2) feeding way can reduce the side reaction of decomposition of H_(2)O_(2) by MoS_(2) and effectively improve the utilization rate of H_(2)O_(2) and the stability of MoS_(2)-Fe_(x). Compared with Fe_(2)O_(3)^(-)based Fenton system, MoS_(2)-Fe_(x) can significantly save the amount of H_(2)O_(2). Compared with nano-iron powder, the formation of iron sludge in MoS_(2)-Fe_(x) system was significantly reduced. Furthermore, long-term degradation test showed that the MoS_(2)-Fe75/H_(2)O_(2) system could maintain the effectiveness of degrading organic pollutants for 10 days (or even longer). This study has a guiding significance for the large-scale treatment of industrial wastewater by improved Fenton technology in the future.

关键词： Fenton reaction Co-catalytic Molybdenum sulfide Hydrogen peroxide Singlet oxygen

Passivation Behavior of 2507 Super Duplex Stainless Steel in Hot Concentrated Seawater:Influence of Temperature and Seawater Concentration

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Acta Metallurgica Sinica(English Letters) 2022年第2期35卷 326-340页

作者： Kang Zhao Xiao-Qi Li Li-Wei Wang Qi-Rong Yang lian-Jun cheng Zhong-Yu Cui College of Mechanical and Electrical Engineering Qingdao UniversityQingdao 266071China School of Materials Science and Engineering Ocean University of ChinaQingdao 266100China

The electrochemical behavior and passivation properties of 2507 super duplex stainless steel(SDSS)in the hot concentrated seawater with different concentrations at different temperatures are characterized by electrochemical methods and X-ray photoelectron *** passive film formed on 2507 SDSS belongs to n-type semiconductor and mainly composed of hydroxides and oxides of Fe and Cr under all *** protectiveness of the passive film decreases with the increase in temperature mainly because of the increase in defect density in the passive *** corrosion resistance of 2507 decreases with the increase in seawater concentration,and the critical pitting temperature also decreases.

关键词： Stainless steel Hot concentrated seawater Passive film Pitting

Visualization analysis of the study of fund-sponsored clinical nursing papers

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Frontiers of Nursing 2018年第2期5卷 127-137页

作者： Xi Tan Jin-lian cheng Yu-Jiao Li School of Nursing Shanxi Medical UniversityTaiyuanShanxi 030001 China First Hospital of Shanxi Medical University TaiyuanShanxi 030001China

Objective： The aims of this study were to understand the status quo of authors, collaborations between institutions, research hotspots, and research frontiers of fund-sponsored clinical nursing papers and to provide a reference for Chinese scholars to conduct clinical nursing studies in the ***： The visualization software CiteSpace was used to analyze fund-sponsored clinical nursing papers published between 2012 and 2016 in 12 core journals of ***： In the clinical nursing field, there are many co叩erative author groups; however, the collaborations between institu加 not close and exist mainly within the same province or city. High-frequency keywords have revealed the four clinical nursing research hotspots of population, diseases, nursing intervention, and others. Chinese medicine nursing, prevention, treatment and nursing, and new technology-aided nursing of ventilator-associated pneumonia are the study frontiers of clinical ***： Clinical nursing studies are rich in content and cover a wide range of areas, and their hotspots and frontiers are closely related to the requirements of clinical nursing. Collaborations across regions, provinces, and cities are not adequate; there is an urgent need to strengthen the cross-regional exchanges and collaborations to promote the further development of clinical nursing.

关键词： clinical nursing fund-sponsored papers CiteSpace visualization analysis research hotspot research frontiers

An improved algorithm for retrieving thin sea ice thickness in the Arctic Ocean from SMOS and SMAP L-band radiometer data

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Acta Oceanologica Sinica 2024年第3期43卷 127-138页

作者： lian He Senwen Huang Fengming Hui Xiao cheng School of Geospatial Engineering and Science Sun Yat-Sen Universityand Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai)Zhuhai 519082China Key Laboratory of Comprehensive Observation of Polar Environment(Sun Yat-Sen University) Ministry of EducationZhuhai 519082China

The aim of this study was to develop an improved thin sea ice thickness(SIT)retrieval algorithm in the Arctic Ocean from the Soil Moisture Ocean Salinity and Soil Moisture Active Passive L-band radiometer *** SIT retrieval algorithm was trained using the simulated SIT from the cumulative freezing degree days model during the freeze-up period over five carefully selected regions in the Beaufort,Chukchi,East Siberian,Laptev and Kara seas and utilized the microwave polarization ratio(PR)at incidence angle of 40°.The improvements of the proposed retrieval algorithm include the correction for the sea ice concentration impact,reliable reference SIT data over different representative regions of the Arctic Ocean and the utilization of microwave polarization ratio that is independent of ice *** relationship between the SIT and PR was found to be almost stable across the five selected *** SIT retrievals were then compared to other two existing algorithms(i.e.,UH_SIT from the University of Hamburg and UB_SIT from the University of Bremen)and validated against independent SIT data obtained from moored upward looking sonars(ULS)and airborne electromagnetic(EM)induction *** results suggest that the proposed algorithm could achieve comparable accuracies to UH_SIT and UB_SIT with root mean square error(RMSE)being about 0.20 m when validating using ULS SIT data and outperformed the UH_SIT and UB_SIT with RMSE being about 0.21 m when validatng using EM SIT *** proposed algorithm can be used for thin sea ice thickness(<1.0 m)estimation in the Arctic Ocean and requires less auxiliary data in the SIT retrieval procedure which makes its implementation more practical.

关键词： Arctic sea ice sea ice thickness remote sensing Soil Moisture Active Passive(SMAP) Soil Moisture Ocean Salinity and Soil(SMOS)

Prediction of cell-cell communication patierns of dorsal root ganglion cells: single-cell RNA sequencing data analysis

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Neural Regeneration Research 2024年第6期19卷 1367-1374页

作者： Yanna lian cheng Wu Li Liu Xiangyao Li National Health Commission and Chinese Academy of Medical Sciences Key Laboratory of Medical Neurobiology Ministry of Education Frontier Science Center for Brain Research and Brain-Machine Integration School of Brain Science and Brain Medicine Zhejiang University International Institutes of Medicine the Fourth Affiliated Hospital of Zhejiang University School of Medicine Zhejiang University-University of Edinburgh Institute Zhejiang University School of Medicine Zhejiang University 4. Biomedical Sciences College of Medicine and Veterinary Medicine The University of Edinburgh Core Facilities of the School of Medicine Zhejiang University

Dorsal root ganglion neurons transmit peripheral somatic information to the central nervous system, and dorsal root ganglion neuron excitability affects pain perception. Dorsal root ganglion stimulation is a new approach for managing pain sensation. Knowledge of the cell-cell communication among dorsal root ganglion cells may help in the development of new pain and itch management strategies. Here, we used the single-cell RNA-sequencing(scRNA-seq) database to investigate intercellular communication networks among dorsal root ganglion cells. We collected scRNA-seq data from six samples from three studies, yielding data on a total of 17,766 cells. Based on genetic profiles, we identified satellite glial cells, Schwann cells, neurons, vascular endothelial cells, immune cells, fibroblasts, and vascular smooth muscle cells. Further analysis revealed that eight types of dorsal root ganglion neurons mediated proprioceptive, itch, touch, mechanical, heat, and cold sensations. Moreover, we predicted several distinct forms of intercellular communication among dorsal root ganglion cells, including cell-cell contact, secreted signals, extracellular matrix, and neurotransmitter-mediated signals. The data mining predicted that Mrgpra3-positive neurons robustly express the genes encoding the adenosine Adora2b(A2B) receptor and glial cell line-derived neurotrophic factor family receptor alpha 1(GFRα-1). Our immunohistochemistry results confirmed the coexpression of the A2B receptor and GFRα-1. Intrathecal injection of the A2B receptor antagonist PSB-603 effectively prevented histamine-induced scratching behaviour in a dose-dependent manner. Our results demonstrate the involvement of the A2B receptor in the modulation of itch sensation. Furthermore, our findings provide insight into dorsal root ganglion cell-cell communication patterns and mechanisms. Our results should contribute to the development of new strategies for the regulation of dorsal root ganglion excitability.

关键词： cell-cell communications CellChat dorsal root ganglion scRNA-Seq database

Lithiophilic Cu-Li_(2)O matrix on a Cu Collector to Stabilize Lithium Deposition for Lithium Metal Batteries

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Energy & Environmental Materials 2022年第4期5卷 1270-1277页

作者： Zhe Gong cheng lian Pengfei Wang Kai Huang Kai Zhu Ke Ye Jun Yan Guiling Wang Dianxue Cao Key Laboratory of Superlight Materials and Surface Technology of Ministry of Education College of Materials Science and Chemical EngineeringHarbin Engineering UniversityHarbin 150001China State Key Laboratory of Chemical Engineering School of Chemical EngineeringEast China University of Science and TechnologyShanghai 200237China

Lithium metal anode is the most ideal candidate for next-generation energy storage ***,the uncontrolled dendrite growth,infinite volume expansion,and undesired side reactions lead to serious safety issues and hinder their potential ***,a pre-lithiation strategy is proposed to construct a high-lithiophilic Cu-Li_(2)O matrix on commercial Cu *** in situ-generated Li_(2)O promises adequate nucleation sites and strengthens solid electrolyte interphase and lateral lithium ***,the existence of 3D matrix reduces the local current *** synergy effect of Li_(2)O and Cu suppresses the growth of lithium *** a result,Cu-Li_(2)O matrix reveals an enhanced lithium plating/stripping behavior with Coulombic efficiency of 98.46%after 270 *** symmetrical cell assembled by Li-plated electrodes displays a prolonged lifespan of 1400 *** work demonstrates a scalable and effective approach for modified current collectors toward stable Li metal anode.

关键词： Cu-Li_(2)O matrix current collectors Li metal anodes SEI film

Graphene Quantum Dot‑Mediated Atom‑Layer Semiconductor Electrocatalyst for Hydrogen Evolution

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纳微快报:英文版 2023年第12期15卷 21-35页

作者： Bingjie Hu Kai Huang Bijun Tang Zhendong Lei Zeming Wang Huazhang Guo cheng lian Zheng Liu liang Wang Institute of Nanochemistry and Nanobiology School of Environmental and Chemical EngineeringShanghai University99 Shangda RoadBaoShan DistrictShanghai 200444People’s Republic of China State Key Laboratory of Chemical Engineering Shanghai Engineering Research Center of Hierarchical NanomaterialsSchool of Chemistry and Molecular EngineeringEast China University of Science and TechnologyShanghai 200237People’s Republic of China School of Materials Science and Engineering Nanyang Technological University50 Nanyang AvenueSingapore 639798Singapore

The hydrogen evolution reaction performance of semiconducting 2H-phase molybdenum disulfide(2H-MoS_(2))presents a significant hurdle in realizing its full potential ***,we utilize theoretical calculations to predict possible functionalized graphene quantum dots(GQDs),which can enhance HER activity of bulk MoS_(2).Subsequently,we design a functionalized GQD-induced in-situ bottom-up strategy to fabricate near atom-layer 2H-MoS_(2) nanosheets mediated with GQDs(ALQD)by modulating the concentration of electron withdrawing/donating functional *** results reveal that the introduction of a series of functionalized GQDs during the synthesis of ALQD plays a crucial ***,the higher the concentration and strength of electron-withdrawing functional groups on GQDs,the thinner and more active the resulting ALQD ***,the synthesized near atom-layer ALQD-SO_(3)demonstrate significantly improved HER *** GQD-induced strategy provides a simple and efficient approach for expanding the catalytic application of MoS_(2).Furthermore,it holds substantial potential for developing nanosheets in other transition-metal dichalcogenide materials.

关键词： Graphene quantum dots MoS2 nanosheets Atom-layer Semiconductor electrocatalysts Hydrogen evolution reaction

Preparation and atmospheric wet-reflow of indium microbump for low-temperature flip-chip applications

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Advances in Manufacturing 2023年第2期11卷 203-211页

作者： Wen-Hui Zhu Xiao-Yu Xiao Zhuo Chen Gui Chen Ya-Mei Yan lian-cheng Wang Gang-Long Li State Key Laboratory of High Performance Complex Manufacturing Central South UniversityChangsha410083People's Republic of China College of Mechanical and Electrical Engineering Central South UniversityChangsha410083People's Republic of China School of Mechanical and Electrical Engineering East China University of TechnologyNanchang330013People's Republic of China

An urgent demand for lowering bonding temperature has been put forward by advanced flip-chip integration such as micro-LED packaging and heterogeneous integration of semiconductor *** microbump with low-melting point has attracted attention for its potential use as the interconnection intermediate,and the development of its fabrication process is therefore of great *** reveal the critical process factors for successfully fabricating a high-density In microbump array,this paper investigated a simple process flow of In patterning and reflow and detailed the flux-assisted wet reflow *** process conditions,including the patterned In volume,alignment accuracy,reflow reagent liquidity,and temperature profile,were described,with a particular emphasis on the role of surface tension of molten indium film during the formation of spherical microbumps.A high-density indium ball array with an overall yield greater than 99.7%can be obtained,which suggests that the In patterning and wet-reflow processes are robust and that a high-quality microbump array could be readily formed with low equipment ***,the interfacial reaction characteristics between In microbump and Au adhesion layer were investigated under thermal aging conditions,which revealed lateral intermetallic growth of AuIn2 compound and well-retained interfacial strength even after prolonged aging.

关键词： Flip chip Reflow Indium microbump Au-In intermetallics

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TC600氧氮分析仪测定锰系合金中氮含量

中国检验检测 2024年第3期32卷 52-55页

作者：闫丽庞振兴刘连成王贵玉北京首钢股份有限公司质量检验部迁安064400

锰系合金作为钢铁冶炼的重要原料,氮含量的高低将直接对产品质量产生影响,因此,急需开发一种高准确性的锰系合金中氮元素检验方法。本文对仪器参数、曲线建立方法、称样质量、投样方式、包裹方法、样品粒度等多个条件进行了优化,最终建... 详细信息

锰系合金作为钢铁冶炼的重要原料,氮含量的高低将直接对产品质量产生影响,因此,急需开发一种高准确性的锰系合金中氮元素检验方法。本文对仪器参数、曲线建立方法、称样质量、投样方式、包裹方法、样品粒度等多个条件进行了优化,最终建立了一种热导法测定锰系合金中氮含量的方法。采用该方法实验数据精密度RSD小于3%,回收率在97%~107%之间。

关键词：锰系合金热导法氮