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An efficient CuZr-based metallic glasses electrode material for electrocatalytic degradation of azo dyes

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Journal of Environmental Sciences 2024年第2期136卷 537-546页

作者： Zhiwang Deng Bowen Zhao Songtao li zhengkun li Shiming Zhang Kewei Zhang Zhengwang Zhu Taiyuan University of Science and Technology School of materials science and engineeringTaiyuan 030024China Shi-changxu Innovation Center for Advanced Materials Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China Chinese Academy of Sciences Key Laboratory of Nuclear Materials and Safety Assessment Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China Qingdao Yunlu Advanced Materials Technology Co. Ltd.Qingdao 266232China

Metallic glasses have received a lot of attention on wastewater treatment due to their unique atomic structure,and the use of metallic glasses as electrodes has produced unexpected electrocatalytic degradation effects for many pollutants through combining with electrochemical ***,it still is a formidable challenge to find a metallic glass electrode material with both efficient and clean for the catalytic degradation of *** this work,the Cu_(55)Zr_(45)metallic glassy ribbons are used as an electrode to degrade azo dyes and show the excellent degradation effect,which can reach 95.6%within 40 *** the degradation process,almost no additives are produced and Cu_(55)Zr_(45)metallic glassy ribbons have excellent effects under different pH ***,it exhibits good stability for degradation efficiency during the 8 cycle degradation tests of the amorphous alloy *** the copper nanoparticles are exposed on the surface of the ribbons,the oxidized copper obtained synergistically produce activated radicals is the primary degradation mechanism,where the auxiliary degradation mechanisms include electron transfer and the promotion of active *** research develops a new type of electrode material for wastewater treatment,and the economy and high efficiency of Cu55Zr45metallic glass endow it the expandable functional applications.

关键词： Metallic glasses Azo dyes Electrocatalytic Degradation Oxidized copper

GSZ Formula Enhances Sleep Quality:Exploring Its Active Ingredients and Mechanism Using a Network Medicine Approach

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Clinical Complementary Medicine and Pharmacology 2024年第1期4卷 36-43页

作者： Airong Ren Mingxuan Ma Yongyin liang Yarong Wang zhengkun li Yahui liu Qing Fan Guozhen Cui School of Bioengineering Zhuhai Campus of Zunyi Medical UniversityZhuhai 519000GuangdongChina Basic Medical Science Department Zhuhai Campus of Zunyi Medical UniversityZhuhai 519000GuangdongChina

Background:Sleep is essential for maintaining human health,and insomnia is a widespread *** Chinese medicine(TCM)has been used for centuries to treat sleep disorders,with fewer reported side effects compared to conventional ***:This study seeks to investigate the sleep-promoting effects of the GSZ formula,which comprisesγ-aminobutyric acid(GABA),Schisandrae Chinensis Fructus(Wuweizi in Chinese),and Ziziphi Spinosae Semen(Suanzaoren in Chinese).In addition,this study aims to explore the active ingredients and potential mechanisms underlying the sleep-enhancing effects of the ***:The impact of GSZ on sleep was evaluated using two models,the complete sleep model and the sub-threshold sleep *** were randomly divided into five groups and orally administered GSZ solution(0.33 g/kg/day or 0.99 g/kg/day),positive drug diazepam(2.50 mg/kg)or a control solution for 30 ***-sis model was established in mice using pentobarbital *** duration and incidence were measured by recording when the righting reflex of mice disappeared for more than 1 *** and dopamine(DA)levels in mouse brain tissue were measured using EliSA *** ingredients of the GSZ formula were identified using mass spectrometry,and the targets of these ingredients and disease-related genes were retrieved from public databases.A network medicine approach was used to calculate the shortest path between ingredient targets and disease-related *** expression levels of potential proteins,such as Akt,p-Akt,GSK-3β,and p-GSK-3β,were analyzed using Western blotting based on the predicted ***:GSZ significantly prolonged sleep duration and enhanced the sleep rate in mice(P<0.05).Furthermore,it elevated GABA levels and reduced DA levels in the mouse brain(P<0.05).Network medicine analysis suggested that GABA,stearic acid,genistin,and coumestrol may be the most crucial active ingredients for sleep *** blotting analysis

关键词： Sleep quality Ziziphi spinosae semen Schisandrae chinensis fructus γ-aminobutyric acid Network medicine

退火温度对Fe_(35)Ni_(30)Cr_(20)Al_(10)Nb_(5)高熵合金的组织结构和性能的影响

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材料研究学报 2024年第4期38卷 241-247页

作者：李云飞王金贺张龙李正坤付华萌朱正旺李宏王爱民张海峰中国科学院金属研究所、中国科学院核用材料与安全评价重点实验室沈阳110016 中国科学技术大学材料科学与工程学院沈阳110016 中国科学院金属研究所师昌绪先进材料创新中心沈阳110016

系统地研究了退火处理温度对低熔点高熵合金Fe_(35)Ni_(30)Cr_(20)Al_(10)Nb_(5)(摩尔比)的组织结构和性能的影响。结果表明:随着退火温度的提高,铸态Fe_(35)Ni_(30)Cr_(20)Al_(10)Nb_(5)合金中富Fe-Cr元素的fcc相的体积分数逐渐减少,Laves相和B2-NiAl相的体积分数逐渐增大。准静态压缩实验结果表明,铸态样品的压缩塑性变形能力良好。随着退火处理温度的提高合金的屈服强度先提高后降低,在700℃退火的样品其屈服强度最高(为1247.7 MPa),但是塑性变形量比铸态有所降低。压缩屈服强度随退火处理温度降低,可归因于基体fcc相在高温下的分解。电化学测试结果表明,这种合金的耐腐蚀能力随退火处理温度的提高而单调提高,在900℃退火的样品其腐蚀电位为-72.02 mV。

关键词：金属材料高熵合金退火处理力学性能耐腐蚀性能

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酒精含量检测仪检定装置的长期稳定性研究

计量与测试技术 2024年第4期51卷 103-105页

作者：董宏静杨宁李政坤云南省计量测试技术研究院

呼出气体酒精含量检测仪检定装置主要应用于酒检仪的量值溯源。发生源作为标准气体直接量传至下一级计量器具,稳定性至关重要,JJG 657-2019检定规程规定了8h短期稳定性。由于无法通过整机溯源,得到稳定性数据,因此,本文通过对年工作量约... 详细信息

呼出气体酒精含量检测仪检定装置主要应用于酒检仪的量值溯源。发生源作为标准气体直接量传至下一级计量器具,稳定性至关重要,JJG 657-2019检定规程规定了8h短期稳定性。由于无法通过整机溯源,得到稳定性数据,因此,本文通过对年工作量约5000台次的发生源进行3年的使用观测,并对溯源数据进行分析。实验证明:各参数稳定性满足使用要求,稳定性数据均未超过规定的限值,可为计量标准的长期稳定性考核及日常使用提供参考。

关键词：酒精检测仪稳定性发生源

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临坡地基变形破坏机制与失稳模式探讨

公路工程 2024年第1期49卷 89-97页

作者：杨兴洪李侠陈刚李正坤袁浩云南交投集团公路建设有限公司云南昆明650100 中国科学院武汉岩土力学研究所岩土力学与工程国家重点实验室湖北武汉430071 长江大学城市建设学院湖北荆州434023

临坡地基的安全控制是岩土工程设计中常见的稳定性问题之一,而临坡地基的变形破坏规律是临坡地基安全控制的核心要素。为了分析地形因素对临坡地基变形破坏和失稳模式的影响,利用数值仿真试验,以临坡地基为研究对象,引入坡角和坡顶距两... 详细信息

临坡地基的安全控制是岩土工程设计中常见的稳定性问题之一,而临坡地基的变形破坏规律是临坡地基安全控制的核心要素。为了分析地形因素对临坡地基变形破坏和失稳模式的影响,利用数值仿真试验,以临坡地基为研究对象,引入坡角和坡顶距两个特征参数,对基础进行加载,揭示了临坡地基在受荷加载过程中滑面的破坏形态和地基的动态破坏规律,并分析不同理论下临坡地基破坏模式特点。结果表明:①采用不同理论方法对临坡地基进行分析时,其主要差异为破坏模式和假定条件的不同。②临坡地基的滑移模式主要为基础下尖端向临空侧优势滑移的单侧滑移破坏模式,坡角或坡顶距的增加会使临坡地基从坡面承载力破坏转变为边坡失稳破坏。③随着基础荷载的增加,临坡地基渐进破坏过程为:基础两端优先起裂产生变形→基础下方地基形成三角形压密区→滑面逐渐发育形成→滑面贯通造成失稳破坏。该研究成果对科学合理评价临坡地基失稳破坏安全具有重要的理论意义和工程应用价值。

关键词：临坡条形基础地基数值模拟变形演化机制破坏模式临坡特征参数

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Co_(78)Si_(8)B_(14)metallic glass:A highly efficient and ultra-sustainable Fenton-like catalyst in degrading wastewater under universal pH conditions

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Journal of Materials Science & Technology 2022年第18期113卷 105-116页

作者： Xindong Qin Jiliang Xu Zhengwang Zhu zhengkun li Dawei Fang Huameng Fu Shiming Zhang Haifeng Zhang Institute of Rare and Scattered Elements College of ChemistryLiaoning UniversityShenyang 110036China Shi-Changxu Innovation Center for Advanced Materials Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China Qingdao Yunlu Advanced Materials Technology Co. Ltd.Qingdao 266232China

Overcoming the pH limitation and increasing the catalyst reusability remain pressing demands for metal-lic glass(MG)in wastewater ***,Co_(78)Si_(8)B_(14)MG ribbons are used to degrade dye wastew-ater by activating hydrogen peroxide(H_(2)O_(2))as Fenton-like *** Co-based MG catalysts exhibit high degradation efficiency under both acidic and alkaline conditions,and the kinetic reaction rate at pH 10(0.176 min^(−1)) and pH 4(0.089 min^(−1)) is 5.9 and 1.2 times higher than that of the extensively studied Fe-based MG catalysts,***,the Co-based MG catalysts can be reused up to 20-60 times at universal pH conditions,demonstrating fairly good *** newly discovered Co-based MG catalysts do not follow the classical Fenton reactions with H_(2)O^(2) the way Fe-based MGs *** an acid environment,hydroxyl radicals play a dominant role in the degradation,while in an alkaline environ-ment,the effect of hydroxyl radicals is weakened,and Co^(3+) ions exert a relatively major function on the *** excellent performance in catalytic activity and reusability at universal pH conditions of the Co-based MGs will inspire the development of MGs in wastewater treatment.

关键词： Metallic glass Wastewater degradation Catalytic applications

High-temperature Mechanical Properties and Dynamic Recrystallization Mechanism of in situ Silicide-reinforced MoNbTaTiVSi Refractory High-entropy Alloy Composite

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Acta Metallurgica Sinica(English Letters) 2022年第10期35卷 1617-1630页

作者： Shaofan Ge Shifeng lin Huameng Fu Long Zhang Tieqiang Geng Zhengwang Zhu zhengkun li Hong li Aimin Wang Hongwei Zhang Haifeng Zhang Shi-Changxu Innovation Center for Advanced Materials Institute of Metal ResearchChinese Academy of SciencesShenyang110016China School of Materials Science and Engineering University of Science and Technology of ChinaHefei230026China CAS Key Laboratory of Nuclear Materials and Safety Assessment Institute of Metal ResearchChinese Academy of SciencesShenyang110016China Dongguan Eontec Co. LtdDongguan523662China

The hypoeutectic composite material composed of BCC phase and in situ precipitated Ti_(5)Si_(3) was prepared by adding Si into MoNbTaTiV high-entropy *** obvious oriented in situ Ti_(5)Si_(3) phase formed eutectic phase with BCC phase in the inter-dendritic area,which leads to excellent properties of the *** alloy exhibits ultra-high yield stress of 718 MPa at 1200℃ and obvious compression *** reaching the maximum strength,dynamic recovery(DRV)and dynamic recrystallization(DRX)caused soften *** DRX mechanism of the dual-phase eutectic structure is analyzed by electron backscatter *** DRX of the BCC phase conforms to the discontinuous DRX and continuous DRX mechanisms,while the Ti_(5)Si_(3) phase has a geometric DRX mechanism in addition to the above two *** high performance of this composite has enough potential high-temperature applications such as nuclear and aero engine.

关键词： Refractory high-entropy alloy composite Mechanical properties In situ silicide compound Dynamic recrystallization

Added Benefit of the Early-Morning-Orbit Satellite Fengyun-3E on the Global Microwave Sounding of the Three-Orbit Constellation

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Advances in Atmospheric Sciences 2024年第1期41卷 39-52页

作者： Juan li zhengkun QIN Guiqing liU Jing HUANG CMA Earth System Modeling and Prediction Centre Beijing 100081China State Key Laboratory of Severe Weather Chinese Academy of Meteorological SciencesBeijing 100081China Joint Center for Data Assimilation Research and Applications School of Atmospheric SciencesNanjing University of Information Science&TechnologyNanjing 210044China

The three-orbit constellation can comprehensively increase the spatial coverage of polar-orbiting satellites,but the polar-orbiting satellites currently in operation are only mid-morning-orbit and afternoon-orbit ***-3E(FY-3E)was launched successfully on 5 July 2021 in *** an early-morning-orbit satellite,FY-3E can help form a complete three-orbit observation system together with the mid-morning and afternoon satellites in the current mainstream operational *** this study,we investigate the added benefit of FY-3E microwave sounding observations to the midmorning-orbit Meteorological Operational satellite-B(Met Op-B)and afternoon-orbit Fengyun-3D(FY-3D)microwave observations in the Chinese Meteorological Administration global forecast system(CMA-GFS).The results show that the additional FY-3E microwave temperature sounder-3(MWTS-3)and microwave humidity sounder-2(MWHS-2)data can increase the global coverage of microwave temperature and humidity sounding data by 14.8% and 10.6%,*** enables the CMA-GFS to achieve nearly 100% global coverage of microwave-sounding observations at each analysis ***,after effective quality control and bias correction,the global biases and standard deviations of the differences between observations and model simulations are also *** on the Advanced Microwave Sounding Unit A and the Microwave Humidity Sounder onboard Met Op-B,and the MWTS-2 and MWHS-2 onboard FY-3D,adding the microwave sounding data of FY-3E can further reduce the errors of analysis results and improve the global prediction skills of CMA-GFS,especially for the southern-hemisphere forecasts within 96 hours,all of which are significant at the 95% confidence level.

关键词： data assimilation microwave temperature sounder MWTS-3

Highly efficient and stable CuZr-based metallic glassy catalysts for azo dye degradation

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Journal of Materials Science & Technology 2020年第11期42卷 88-97页

作者： Bowen Zhao Zhengwang Zhu Xin Dong Qin zhengkun li Haifeng Zhang Shenyang National Laboratory for Materials Science Institute of Metal ResearchChinese Academy of SciencesShenyang110016China School of Materials Science and Engineering University of Science and Technology of ChinaShenyang110016China Institute of Rare and Scattered Elements College of ChemistryLiaoning UniversityShenyang110036China

Metallic glasses with the unique disordered atomic structure and metastable nature have been recently applied to degrade the azo dyes and other organic pollutants based on their superior catalytic *** this work,the functional properties of six Cu Zr-based metallic glassy ribbons with the different nominal components in degrading Acid OrangeⅡ(AOⅡ)azo dyes were *** Cu47.5Zr46Al6.5 metallic glassy ribbons could exhibit the more advanced catalytic performance for degradation process,which could completely degrade azo dye aqueous solution within 30 ***,the Cu47.5Zr46Al6.5 metallic glassy ribbons also showed the excellent cyclic stability along with approximately 97.68%degradation efficiency after 10 *** excellent catalytic performance and stability are closely related to the synergistic effect of exposed copper nanoparticles and produced copper oxides in the reaction,which contributes to accelerate the generation of more hydroxyl radicals(·OH)to react with dye *** findings can be able to develop a novel potential metallic glassy material for the functional application of wastewater treatment.

关键词： Metallic glasses Catalytic performance Degradation Azo dyes