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Enhancing Green Ammonia Electrosynthesis Through Tuning Sn Vacancies in Sn‑Based MXene/ MAX Hybrids

Nano-Micro Letters 2024年第5期16卷 154-168页

作者： Xinyu Dai Zhen‑Yi Du Ying Sun Ping chen Xiaoguang Duan Junjun Zhang hui Li Yang Fu Baohua Jia Lei Zhang Wenhui Fang Jieshan Qiu Tianyi Ma Key Laboratory for Green Synthesis and Preparative Chemistry of Advanced Materials of Liaoning Province College of ChemistryInstitute of Clean Energy ChemistryLiaoning UniversityShenyang 110036People’s Republic of China State Key Laboratory of Clean and Efficient Coal Utilization Taiyuan University of TechnologyTaiyuan 030024People’s Republic of China school.of Chemistry and Chemical engineering Anhui UniversityHefei 230601People’s Republic of China school.of Chemical engineering The University of AdelaideAdelaideSA 5005Australia State Key Laboratory of High‑Efficiency Utilization of Coal and Green Chemical engineering College of Chemistry and Chemical EngineeringNingxia UniversityYinchuan 750021NingxiaPeople’s Republic of China school.of science RMIT UniversityMelbourneVIC 3000Australia Guangdong Provincial Key Laboratory of Advanced Energy Storage Materials School of Chemistry and Chemical EngineeringSouth China University of TechnologyGuangzhou 510640People’s Republic of China College of Chemical engineering State Key Laboratory of Chemical Resource EngineeringBeijing University of Chemical TechnologyBeijing 100029People’s Republic of China

Renewable energy driven N_(2) electroreduction with air as nitrogen source holds great promise for realizing scalable green ammonia ***,relevant out-lab research is still in its ***,a novel Sn-based MXene/MAX hybrid with abundant Sn vacancies,Sn@Ti_(2)CTX/Ti_(2)SnC–V,was synthesized by controlled etching Sn@Ti_(2)SnC MAX phase and demonstrated as an efficient electrocatalyst for electrocatalytic N2 *** to the synergistic effect of MXene/MAX heterostructure,the existence of Sn vacancies and the highly dispersed Sn active sites,the obtained Sn@Ti2CTX/Ti_(2)SnC–V exhibits an optimal NH_(3) yield of 28.4μg h^(−1) mg_(cat)^(−1) with an excellent FE of 15.57% at−0.4 V versus reversible hydrogen electrode in 0.1 M Na_(2)SO_(4),as well as an ultra-long ***,this catalyst represents a satisfactory NH3 yield rate of 10.53μg h^(−1) mg^(−1) in the home-made simulation device,where commercial electrochemical photovoltaic cell was employed as power source,air and ultrapure water as feed *** as-proposed strategy represents great potential toward ammonia production in terms of financial cost according to the systematic technical economic *** work is of significance for large-scale green ammonia production.

关键词： Green ammonia synthesis N2 electroreduction Renewable energy Sn MXene/MAX hybrid

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Porous framework materials for energy&environment relevant applications:A systematic review

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Green Energy & Environment 2024年第2期9卷 217-310页

作者： Yutao Liu Liyu chen Lifeng Yang Tianhao Lan hui Wang chenghong Hu Xue Han Qixing Liu Jianfa chen Zeming Feng Xili Cui Qianrong Fang Hailong Wang Libo Li Yingwei Li Huabin Xing Sihai Yang Dan Zhao Jinping Li College of Chemical engineering and technology Shanxi Key Laboratory of Gas Energy Efficient and Clean UtilizationTaiyuan University of TechnologyTaiyuan030024China school.of Chemistry and Chemical engineering South China University of TechnologyGuangzhou510640China Key Laboratory of Biomass Chemical engineering of Ministry of Education College of Chemical and Biological EngineeringZhejiang UniversityHangzhou310027China Department of Chemistry The University of ManchesterManchesterM139PLUK Department of Chemical and Biomolecular engineering National University of SingaporeSingapore 117585Singapore ZJU-Hangzhou Global Scientific and Technological Innovation Center Hangzhou311215China State Key Laboratory of Inorganic Synthesis and Preparative Chemistry Jilin UniversityChangchun130012China beijing.Key Laboratory for science and Application of Functional Molecular and Crystalline Materials Department of ChemistryUniversity of Science and Technology BeijingBeijing100083China

Carbon peaking and carbon neutralization trigger a technical revolution in energy&environment related *** of new technologies for green energy production and storage,industrial energy saving and efficiency reinforcement,carbon capture,and pollutant gas treatment is in highly imperious *** emerging porous framework materials such as metal–organic frameworks(MOFs),covalent organic frameworks(COFs)and hydrogen-bonded organic frameworks(HOFs),owing to the permanent porosity,tremendous specific surface area,designable structure and customizable functionality,have shown great potential in major energy-consuming industrial processes,including sustainable energy gas catalytic conversion,energy-efficient industrial gas separation and ***,this manuscript presents a systematic review of porous framework materials for global and comprehensive energy&environment related applications,from a macroscopic and application perspective.

关键词： Porous framework materials Catalysis Separation Gas storage Carbon neutrality

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一种挖掘最大频繁子图的新算法

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系统仿真学报 2008年第18期20卷 4872-4877页

作者：王映龙杨炳儒宋泽峰陈卓李琳娜北京科技大学信息工程学院

如何从大量的图中挖掘出令人感兴趣的子图模式已经成为数据挖掘领域研究的热点之一.由于其内在的计算复杂性,挖掘全部频繁子图非常困难,且得到的频繁子图过多,影响着结果的理解和应用.解决方案之一是挖掘最大频繁子图.在经典的Apriori... 详细信息

如何从大量的图中挖掘出令人感兴趣的子图模式已经成为数据挖掘领域研究的热点之一.由于其内在的计算复杂性,挖掘全部频繁子图非常困难,且得到的频繁子图过多,影响着结果的理解和应用.解决方案之一是挖掘最大频繁子图.在经典的Apriori算法的基础上,提出了一种挖掘最大频繁子图的新算法Apriori-MaxGraph.首先给出了一种新的、用于计算图的邻接矩阵规范编码的结点排序策略,大大降低了求图规范编码的复杂度,并可以加速子图规范编码序列匹配的速度.其次,针对最大频繁子图,对候选子图的生成进行了规范.最后,采用双向搜索与剪枝策略,大大减小了搜索空间,提高了算法的效率.实验结果表明,Apriori-MaxGraph算法具有较高的挖掘效率.

关键词：数据挖掘最大频繁子图邻接矩阵规范编码

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Multi-Concurrent Fault Diagnosis Approach for Aeroengine Based on Wavelet Fuzzy Network

Multi-Concurrent Fault Diagnosis Approach for Aeroengine Bas...

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2009中国控制与决策会议

作者： Dungen chen school.of Automation science and Electrical engineering beijing.university of Aeronautics and Astronautics beijing.100083.china Guangbin Ding school.of Water Conservancy and Electric Power Hebei university of engineering Handan,056021,china

＜正＞To improve the limitation of applying traditional fault diagnosis method to the diagnosis of multi-concurrent vibrant faults of aeroengine,a new diagnosis approach combining the wavelet transform with fuzzy theory is proposed. A novel method based on the statistic rule is brought forward to determine the threshold of each order of wavelet space and the decomposition level adaptively,increasing the signal-noise-ratio （SNR）.The effective eigenvectors are acquired by binary discrete wavelet transform and the fault modes are classified by fuzzy diagnosis equation based on correlation *** fault diagnosis model of aeroengine is established and the extended Kalman filter（EKF） algorithm is used to fulfill the network structure and the robustness of fault diagnosis equation is *** means of choosing enough samples to train the fault diagnosis equation and the information representing the faults is input into the trained diagnosis equation,and according to the output result the type of fault can be *** applications show that the proposed method can effectively diagnose multi-concurrent fault for aeroengine vibration and the diagnosis result is correct.

关键词： Wavelet transform fuzzy theory fault diagnosis signal de-noising aeroengine

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Discovery of CCDC188 gene as a novel genetic target for human acephalic spermatozoa syndrome

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Protein & Cell 2024年第9期15卷 704-709页

作者： Jing Wang hui-Juan Jin Yi Lu Zi-Han Wang Teng-Yan Li Lan Xia Hong-Jun Li Bin-Bin Wang Su-Ren chen Department of Medical Genetics and Developmental Biology School of Basic Medical SciencesCapital Medical UniversityBeijing 100069China Key Laboratory of Cell Proliferation and Regulation Biology Ministry of EducationDepartment of BiologyCollege of Life SciencesBeijing Normal UniversityBeijing 100875China Graduate school Chinese Academy of Medical Sciences&Peking Union Medical CollegeBeijing 100005China Department of Urology Peking Union Medical College HospitalBeijing 100005China Center for Genetics National Research Institute of Family PlanningBeijing 100081China NHC Key Laboratory of Reproductive Health engineering technology Research(NRIFP) Beijing 100081China

Dear Editor,Male infertility is a widespread health problem and affects approximately 6%–8%of the male population(Jiao et al.,2021).Acephalic spermatozoa syndrome(ASS),a rare but severe type of teratozoospermia,is ch... 详细信息

关键词： al. infertility finally

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Growth of nitrate contribution to aerosol pollution during wintertime in Xi'an,northwest china:Formation mechanism and effects of NH_(3)

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Particuology 2024年第4期87卷 303-315页

作者： hui Su Ting Zhang Suixin Liu Yao Qu Huan Li Jiamao Zhou Zhuzi Zhao Qiyuan Wang Lu Li Minxia Shen Shuoyuan chen Steven Sai Hang Ho Junji Cao State Key Laboratory of Loess and Quaternary Geology.Key Laboratory ofAerosol Chemistry and Plhysics Institute of Earth EnvironmentChinese Acadery of SciencesXi'an 710061China Xi'an Institute for Innovative Earth Environment Research Xi'an 710061China National pbservation and Research Station of Regional Ecological Environment Change and Cornprehensive Management in the Guanzhong Plain Xi'an 710061China Shaanxi Key Laboratory of Atmospheric and Haze fog Pollution Prevention Institute of Earth EnvironmentChinese Academy of SciencesXi'an 710061China university of Chinese Academy of sciences Beijing 100049China school.of Chemical and Environmental engineering Jiangsu University of TechnologyChangzhou 213001China Division of Atmospheric sciences Desert Research InstituteReno NV89512United States Institute of Atmospheric Physics Chinese Academy of SciencesBeijing 100029China

With the strengthened controls on SO2 emissions and extensive increases in motor vehicles'exhaust,aerosol pollution shifts from sulfate-rich to nitrate-rich in recent years in Xi'an,*** further gain insights into the factors on nitrate formation and efficiently mitigate air pollution,highly time-resolved observations of water-soluble inorganic ions(WSIIs)in PM_(2.5) were measured in a suburban area of Xi'an,china during *** concentration of total WSIIs is 39.8μg m-3 on average,accounting for 50.3%of PM_(2.5) *** contrast to a slight decrease in the mass fraction of SO_(4)^(2-),NO_(3)-shows a sig-nificant increase of the PM_(2.5) contribution with the aggravation of aerosol *** suggests the importance of NO_(3)-formation to haze ***,homogeneous reactions govern the formation of NO_(3)-,while alkali metals such as calcium and sodium play an additional role in retaining NO_(3)-in PM_(2.5) during clean ***,the heterogeneous hydrolysis reaction contributed more to NO_(3)-formation during the pollution periods under high relative *** investigation reveals that temperature,relative humidity,oxidant,and ammonia emissions facilitate rapid NO_(3)-*** the random forest(RF)model,NO_(3)-concentrations were successfully simulated with measured variables for the training and testing datasets(R2>0.95).Among these variables,CO,NH_(3),and NO_(2) were found to be the main factors affecting the NO_(3)-*** with the period without vehicle re-striction,the contributions of NO_(3)-and NH4+to PM_(2.5) mass decreased by 5.3%and 3.4%in traffic re-striction periods,*** vehicle restriction leads to the decreases of precursor gases of NO_(2),SO_(2),and NH_(3) by 12.8%,5.9%,and 27.6%,*** results demonstrate collaborative emission reduction of NO_(x) and NH_(3) by vehicle restrictions,and using new energy vehicles(or electric vehicles)can effectively alleviate particul

关键词： PM_(2.5) Water-soluble inorganic ions Nitrate formation Excess ammonium Vehicle restrictions

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Simultaneously Improved Curing,Mechanical,Antioxidative Properties and Reduced ZnO Loading of Silica Filled NR Composites by Incorporation of Low-cost Crude Carbon Dots via Conventional Melt-milling Method

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Chinese Journal of Polymer science 2024年第6期42卷 815-825页

作者： Chao-Ying Sun Hai-Jun Ji Li-Wei Li hui Yang Xiao-Peng An Yi-Ping chen Ming-Jian Han Can Jiang Li-Qun Zhang Peng Yu Run-Guo Wang State Key Laboratory of Organic-Inorganic Composites Beijing University of Chemical TechnologyBeijing100029China school.of Materials science and engineering Wuhan Institute of TechnologyWuhan430205China

Rubbers or elastomers play an important role in hi-tech technology and civilian daily life because of their unique and strategical ***,the rubber additives are essential components for rubbers’practical ***,developing novel multifunctional additives has attracted increasing research *** this work,low-cost crude carbon dots(CCDs)were used as multifunctional additives for natural rubber/silica system(without any additional modification)through industrial compatible melt-mixing *** results revealed that the CCDs could disperse well in the NR/silica system,and they could not only endow the rubber compound with excellent anti-aging capability due to CCDs’radical scavenging activity because of their plenty of nitrogen-containing species,but also improve the curing rate and mechanical performance of the rubber ***,the CCDs could reduce the rolling resistance of the rubber composites(tanδvalue at 7%strain of the rubber composite could be decreased by 34%),which is promising for the application of energy-saving tire ***,the addition of CCDs could effectively reduce the ZnO dosage by at least 40%in the rubber composite without deteriorating its ***,this work provides valuable guidance to develop novel cheap yet effective additives for the elastomer.

关键词： Natural rubber Crude carbon dots Antioxidant ZnO reduction Vulcanization

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Field Uniformity Calibration of Practical Reverberation Chamber

Field Uniformity Calibration of Practical Reverberation Cham...

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The Fourth Asia-Pacific Conference on Environmental Electromagnetics

作者： chen Di Wang Yan Gao Bin Gao Yougang school.of Telecommunication engineering beijing.university of Posts&Telecommunications beijing.china 100876 Academy of Electronics and information technology beijing.china 100041

＜正＞This paper describes the process of field uniformity calibration of the practical reverberation chamber which has been built in china Academy of Electronics and information technology （CAEIT）. According to the IEC 61000-4-21 standard, the data which is obtained from the calibration is processed and compared with the ffiC standard. In consequence, the advantage that high radiant electric field strength can be generated easily by low input power of reverberation chamber technique is proved through the course.

关键词： Reverberation chamber uniformity calibration field strength DEC 61000-4-21

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Tumor microenvironment-activated theranostic nanoreactor for NIR-II Photoacoustic imaging-guided tumor-specific photothermal therapy

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Fundamental Research 2024年第1期4卷 178-187页

作者： Nan Yang hui Li Changyu Cao Lei Zhao Xuejiao Song Wenjun Wang Wenjing Xu Yewei Zhang Peng chen Xiaochen Dong Key Laboratory of Flexible Electronics(KLOFE)and Institute of Advanced Materials(IAM) School of Physical and Mathematical SciencesNanjing Tech University(NanjingTech)Nanjing 211816China school.of Physical science and information technology Liaocheng UniversityLiaocheng 252059China Department of Hepatobiliary and Pancreatic Surgery the Second Affiliated Hospital of Nanjing Medical UniversityNanjing 210011China school.of Chemical and Biomedical engineering Lee Kong Chian School of MedicineNanyang Technological University62 Nanyang DriveSingapore 637459Singapore

Theranostic agents that can be sensitively and specifically activated by the tumor microenvironment(TME)have recently attracted considerable *** this study,TME-activatable 3,3′,5,5′-tetramethylbenzidine(TMB)-copper peroxide(CuO_(2))@poly(lactic-co-glycolic acid)(PLGA)@red blood cell membrane(RBCM)(TCPR)nanoparticles(NPs)for second near-infrared photoacoustic imaging-guided tumor-specific photothermal therapy were developed by co-loading CuO_(2)NPs and TMB into PLGA camouflaged by *** an efficient H_(2)O_(2)supplier,once exposed to a proton-rich TME,CuO_(2)NPs can generate H_(2)O_(2)and Cu^(2+),which are further reduced to Cu^(+) by endogenous ***,the Cu^(+)-mediated Fenton-like reaction produces cytotoxic·OH to kill the cancer cells and induce TMB-mediated photoacoustic and photothermal *** with the RBCM modification-prolonged blood circulation,TCPR NPs display excellent specificity and efficiency in suppressing tumor growth,paving the way for more accurate,safe,and efficient cancer theranostics.

关键词： Nanoparticles Photoacoustic imaging Second near-infrared region Tumor microenvironment Self-sufficient H_(2)O_(2)

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Data-driven Modeling and Online Algorithm for Hot Rolling Process

Data-driven Modeling and Online Algorithm for Hot Rolling Pr...

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第三十届中国控制会议

作者： LIANG hui~(1,2),TONG Chaonan~(1,2),PENG Kaixiang~(1,2) 1.school.of information engineering,university of science and technology beijing.100083.P.R.china 2.Key Laboratory of Advanced Control of Iron and Steel Process(Ministry of Education), university of science and technology beijing.beijing.100083.P.R.china

＜正＞Based on the idea that the accuracy of model could be significantly improved by combing several sub-models,a multiple support vector machine（MSVM） modeling approach is proposed to build the strip thickness model in hot rolling Automatic Gauge Control（AGC） *** subtractive clustering is adopted to divide the input space into several clusters,and each cluster subset is built by Least-square support vector *** when the online data constantly increased,the clustering subset is updated on-line by subtractive clustering algorithm,and the parameter of each local model is updated by the recursion *** results of experiment demonstrate the method the effectiveness of the proposed modeling approach,and it has powerful ability of online learning.

关键词： Data-driven Automatic Gauge Control Multiple models Support vector machine subtractive clustering

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