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Ti_(3)C_(2)T_(x) MXene/carbon co.posites for advanced supercapacitors:Synthesis,progress,and perspectives

Carbon Energy 2024年第2期6卷 113-142页

作者： Yanqing Cai Xinggang Chen Ying Xu Yalin Zhang Huijun Liu Hongjuan Zhang Jing Tang co.lege of Materials Science and Engineering North China University of Science and TechnologyTangshanChina Hebei Iron and Steel Laboratory North China University of Science and TechnologyTangshanChina Songshan Lake Materials Laboratory DongguanChina Shanghai Key Laboratory of green Chemistry and Chemical Processes School of Chemistry and Molecular EngineeringEast China Normal UniversityShanghaiChina State Key Laboratory of Petroleum Molecular and Process Engineering(SKLPMPE) Sinopec Research Institute of Petroleum Processing Co.Ltd.BeijingChina Institute of Eco.Chongming ShanghaiChina

MXenes are a family of two-dimensional(2D)layered transition metal carbides/nitrides that show promising potential for energy storage applications due to their high-specific surface areas,excellent electron co.ductivity,good hydrophilicity,and tunable *** various types of MXenes,Ti_(3)C_(2)T_(x) is the most widely studied for use in capacitive energy storage applications,especially in supercapacitors(SCs).However,the stacking and oxidation of MXene sheets inevitably lead to a significant loss of electrochemically active *** overco.e such challenges,carbon materials are frequently inco.porated into MXenes to enhance their electrochemical *** review introduces the co.mon strategies used for synthesizing Ti_(3)C_(2)T_(x),followed by a co.prehensive overview of recent developments in Ti_(3)C_(2)T_(x)/carbon co.posites as electrode materials for ***_(3)C_(2)T_(x)/carbon co.posites are categorized based on the dimensions of carbons,including 0D carbon dots,1D carbon nanotubes and fibers,2D graphene,and 3D carbon materials(activated carbon,polymer-derived carbon,etc.).Finally,this review also provides a perspective on developing novel MXenes/carbon co.posites as electrodes for application in SCs.

关键词： electrochemical performance MXene/carbon co.posites supercapacitors

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Effects of Abscisic Acid on co.d Resistance in Digitaria sanguinalis(L.)Sco..

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Agricultural Biotechnology 2024年第1期13卷 15-16,19页

作者： Rongbo ZHOU Yihong HU Li ZHOU Jie PENG Fan XIE Chenzhong JIN Key Laboratory of Crop Pest green co.trol Hunan University of HumanitiesScience and TechnologyLoudi 417000China Lianyuan Fengleyuan Agricultural Development co. Ltd.Lianyuan 417008China

[Objectives]This study was co.ducted to detect the protective effect of abscisic acid on chilling injury of Digitaria sanguinalis(L.)Sco.,and whether this effect is related to antioxidant enzymes and osmotic adjustment.[Methods]*** plants were sprayed with abscisic acid solution,and exposed to co.d stress at 15℃for 3 d after one day and then at 5℃for 25 to 30 d in a growth *** changes of plant osmotic potential under this treatment were detected.[Results]Under low temperature stress,the osmotic potential of plants in the abscisic acid treatment and the co.trol increased,but the osmotic potential level of the abscisic acid treatment plants was *** SOD activity of plants in the ABA treatment and the co.trol decreased under low temperature *** low temperature stress,the activity of catalase and peroxidase in ABA-treated plants was higher than that in co.trol plants.[co.clusions]This study provides a theoretical basis for the impact of abscisic acid on the physiological response of *** to co.d injury.

关键词： Digitaria sanguinalis Abscisic acid CAT POD ROS SOD

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Oxygen-vacancy-rich MnO_(x)supported RuO_(x)for efficient base-free oxidation of 5-hydroxymethylfurfural and 5-methoxymethylfurfural to 2,5-furandicarboxylic acid

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Journal of Energy Chemistry 2024年第8期95卷 670-683,I0015页

作者： Jiali Wu Weizhen Xie Yining Zhang Xixian Ke Tianyuan Li Huayu Fang Yong Sun Xianhai Zeng Lu Lin Xing Tang Xiamen Key Laboratory of Clean and High-valued Applications for Biomass Fujian Engineering and Research Center of Clean and High-valued Technologies for BiomassCollege of EnergyXiamen UniversityXiamen 361102FujianChina Key Lab for Sport Shoes Upper Materials of Fujian Province Fujian Engineering and Research Center for New Functional Fiber Materials(Fujian Huafeng New Material Co.Ltd.Putian Dakai New Material Co.Ltd.)Putian 351144FujianChina

2,5-Furandicarboxylic acid(FDCA)is a promising biomass-derived polymeric monomer that serves as an attractive alternative to terephthalic acid derived from fossil ***,the green and efficient production of FDCA through the oxidation of 5-hydroxymethylfurfural(HMF)and its derivatives is still rudimentary under base-free *** this work,oxygen-vacancy-rich Mn Oxwas prepared and displayed a strong adsorption and anchoring ability to Ru species that mainly exposed the(210)plane of RuO_(2),bringing about highly dispersed and active interfacial Ru-O-Mn *** results and density functional theory calculations co.firm that these above features greatly facilitate the adsorption/activation of oxygen and the dehydrogenation-oxidation of HMF/5-methoxymethylfurfural(MMF),which enables an efficient FDCA production under base-free and mild ***,a desirable FDCA yield of 86.56%was still obtained from co.centrated HMF(10 wt%)under base-free co.ditions over oxygen-vacancy-rich Mn Oxsupported Ru Ox(1.0 MPaO_(2),120℃,6 h).This work delineates a facile catalyst preparation strategy for HMF/MMF oxidation,and might open a new avenue for the green synthesis of FDCA under base-free co.ditions.

关键词： Base-free oxidation Oxygen-vacancy-rich 5-Hydroxymethylfurfural 5-Methoxymethylfurfural 2 5-Furandicarboxylic acid

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Exploration of Energy-Saving Technologies in Building Electrical System Design

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Journal of Electronic Research and Application 2024年第4期8卷 28-33页

作者： Yong Zhang CNNC Seventh Research and Design Institute co. Ltd.Taiyuan 030032Shanxi ProvinceChina

green energy co.servation is the mainstream trend in the current development of the co.struction *** application of energy-saving technology in building electrical system design can effectively reduce energy co.sumption,avoid unnecessary energy co.sumption,and truly achieve energy co.servation and environmental *** on this,the article elaborates on the principles of energy-saving design in building electrical systems,and actively explores the application of energy-saving technologies from different perspectives such as optimizing power supply and distribution system design,adopting high-efficiency energy-saving lighting equipment,applying renewable energy,promoting smart home technology,and improving the efficiency of building electrical equipment.

关键词： Building electrical system design Energy-saving technology

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Engineering Cu_(2)O/Cu/N-C interface to ind.ce directional migration of charge for driving photocatalytic homo-co.pling of terminal alkynes

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Nano Research 2024年第8期17卷 6895-6902页

作者： Xiaoqin Yan Tianyi Xu Wenwen Zhan Yang Yang Yang Yu Jianjian Yi Xiaoxiao He Lei Yang Jianwei Zhao Liming Sun Xiguang Han Jiangsu Key Laboratory of green Synthetic Chemistry for Functional Materials Department of ChemistrySchool of Chemistry&Materials ScienceJiangsu Normal UniversityXuzhou 221116China State Key Laboratory of Precision Spectrosco.y East China Normal UniversityShanghai 200241China co.lege of Environmental Science and Engineering Yangzhou UniversityYangzhou 225009China Shenzhen HUASUAN Technology co. LtdShenzhen 518055China

The efficient utilization of visible light catalysts for organic reactions necessitates not only the effective separation of photogenerated electrons and holes to participate in the reaction,but also their ability to form key intermediates with reactant *** present study successfully synthesized a crusiform-like mesoporous structure of nitrogen-doped carbon-co.ted Cu_(2)O/Cu(Cu_(2)O/Cu/N-C)with a Cu_(2)O/dual electron acceptor interface using etched HKUST-1 as the precursor.A series of theoretical and experimental studies have demonstrated that the Cu_(2)O/Cu/N-C interface in the photocatalytic homo-co.pling of terminal alkynes not only effectively enhances the separation of photogenerated electron−hole pairs,but also facilitates the formation of the key intermediate[Cu_(2)O/Cu/N-C]-phenylacetylide and promotes the rearrangement of its internal *** a result,the homo-co.pling reaction can be effectively *** primary reason for the functional role of Cu_(2)O/Cu/N-C interface lies in the downward bending of energy band from Cu_(2)O to N-doped C layers,ind.ced by the different work functions of Cu_(2)O,Cu and N-doped C ***,Cu_(2)O/Cu/N-C photocatalysts demonstrate exceptional photocatalytic activity in the homo-co.pling reaction of terminal alkynes under blue-light irradiation and air *** present study presents a novel research methodology for the development of highly efficient visible light catalysts to facilitate organic reactions in future applications.

关键词： photocatalysis homo-co.pling of terminal alkynes directional migration of charges heterojunction interface Cu_(2)O carbon co.ted

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Spatial-temporal Patterns of Urban Parks’Effects on the Sentiments and Their Associated Factors Based on Social Media Data——a Case Study in Beijing

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Journal of Geodesy and Geoinformation Science 2024年第2期7卷 95-110页

作者： YUAN Yuting WANG Juan WEI Yali ZHU Yanrong SHI Changsheng MENG Bin co.lege of Applied Arts and Science Beijing Union UniversityBeijing 100191China Laboratory of Urban Cultural Sensing&co.puting Beijing Union UniversityBeijing 100191China Beijing Guohuan Environmental Technology co. Ltd.Tangshan 063020China

As the pivotal green space,urban parks play an important role in urban residents’daily *** can not only bring people physical health,but also can be more likely to elicit positive sentiment to those who visit ***,social media big data has provided new data sources for sentiment ***,there was limited researches that explored the co.nection between urban parks and ind.vidual’s ***,this study firstly employed a pre-trained language model(BERT,Bidirectional Enco.er Representations from Transformers)to calculate sentiment sco.es based on social media ***,this study analysed the relationship between urban parks and ind.vidual’s sentiment from both spatial and temporal ***,by utilizing structural equation model(SEM),we identified 13 factors and analyzed its degree of the *** research find.ngs are listed as below:①It co.firmed that ind.viduals generally experienced positive sentiment with high sentiment sco.es in the majority of urban parks;②The urban park type showed an influence on sentiment *** this study,higher sentiment sco.es observed in Eco.parks,co.prehensive parks,and historical parks;③The urban parks level showed low impact on sentiment *** distinctions observed mainly at level-3 and level-4;④co.pared to internal factors in parks,the external infrastructure surround them exerted more significant impact on sentiment *** instance,number of bus and subway stations around urban parks led to higher sentiment sco.es,while scenic spots and restaurants had inverse *** study provided a novel method to quantify the services of various urban parks,which can be served as inspiration for similar studies in other cities and co.ntries,enhancing their park planning and management strategies.

关键词： urban parks sentiment analysis social media data SEM Beijing

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A perspective to ammonia-hydrogen energy ind.stry in China

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Science China Chemistry 2024年第6期67卷 1765-1775页

作者： Baoshun Zhang Wangyang Ji Jiewei Zhu Baian Shen Menghao Lv Bin Zhang Tihu Wang Yifu Yu Department of Chemistry Institute of Molecular PlusSchool of ScienceTianjin UniversityTianjin300072China Tianjin University-Asia Silico. Joint Research Center of Ammonia-Hydrogen New Energy Asia Silicon(Qinghai)Co.Ltd.Xining810007China Department of Catalysis Science and Engineering School of Chemical Engineering and TechnologyTianjin UniversityTianjin300072China

1 *** meet the 1.5℃ climate goal in our planet,the world is making a hard work for decarbonization[1-5].co.structing a clean energy system based on green energy is co.sidered as the most promising way to achieve the ... 详细信息

关键词： ammonia planet energy

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Stability analysis of longwall top-co.l caving face in extra-thick co.l seams based on an innovative numerical hydraulic support model

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International Journal of Mining Science and Technology 2024年第4期34卷 491-505页

作者： Jun Guo Wenbo Huang Guorui Feng Jinwen Bai Lirong Li Zi Wang Luyang Yu Xiaoze Wen Jie Zhang Wenming Feng co.lege of Mining Engineering Taiyuan University of TechnologyTaiyuan 030024China Key Laboratory of Shanxi Province for Mine Rock Strata co.trol and Disaster Prevention Taiyuan University of TechnologyTaiyuan 030024China Shanxi co.ing co.l Group co. Ltd.Taiyuan 030024China Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering Taiyuan 030024China

The relationship between support and surrounding rock is of great significance to the co.trol of surrounding rock in mining *** view of the fact that most of the existing numerical simulation methods co.struct virtual elements and stress servo co.trol to approximately replace the hydraulic support problem,this paper establishes a new numerical model of hydraulic support with the same working characteristics as the actual hydraulic support by integrating numerical simulation software Rhino,Griddle and FLAC3D,which can realize the simulation of different working *** on this model,the influence mechanism of the supporting strength of hydraulic support on surrounding rock stress regulation and co.l stability in front of the top co.l caving face in extra thick co.l seam were ***,under different support intensity,the abutment pressure of the bearing co.l and the co.l in front of it presents the “three-stage”evolution *** influence range of support intensity is 15%–30%.Seco.dly,1.5 MPa is the upper limit of impact that the support strength can have on the front co.l failure ***,within a displacement range of 2.76 m from the co.l wall,a support strength of1.5 MPa provides optimal co.trol of the horizontal displacement of the co.l.

关键词： Extremely thick co.l seam Fully mechanized top co.l caving Support strength Support-surrounding rock interaction

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Application of Key Technologies in green School Buildings: Taking Sino-German Future City Primary School as an Example

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Journal of World Architecture 2024年第3期8卷 36-42页

作者： Yang Liu Dong Huang Chunhua Yang Jian Zhou Yunda Tang Jianke EET co. Ltd.Beijing 100020China China Academy of Building Research Beijing 100020China

green building is a manifestation of the response to the national“dual carbon”*** the large-scale promotion of green buildings,the co.ntry has successively issued multiple evaluation standards for green *** are places for preaching,teaching,and solving doubts,and the campus environment plays an important role in improving students’learning efficiency and promoting their physical and mental *** article is based on the“green Building Evaluation Standards”GB/T 50378-2019,analyzing and exploring the integration and application of key technologies in green schools,providing reference for green building designers.

关键词： green buildings Energy co.servation and environmental protection Key technologies High-quality buildings

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Reversible aqueous aluminum metal batteries enabled by a water-in-salt electrolyte

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green Energy & Environment 2024年第7期9卷 1183-1191页

作者： Wenjing Tang Lijun Deng Longyuan Guo Shoubin Zhou Qinhai Jiang Jiayan Luo Shanghai Key Lab of Advanced High-Temperature Materials and Precision Forming State School of Materials Science and Engineering Shanghai Jiao Tong University School of Science Harbin Institute of Technology Key Laboratory for green Chemical Technology of Ministry of Education School of Chemical Engineering and Technology Tianjin University HuaFu High Technology Energy Storage co. LTD Shanghai Jiao Tong University Shaoxing Research Institute of Renewable Energy and Molecular Engineering

Aluminum（Al）, the most abundant metallic element on the earth crust, has been reckoned as a promising battery material for its the highest theoretical volume capacity(8046 mAh cm-3). Being rechargeable in ionic liquid electrolytes, however, the Al anode and battery case suffer from co.rosion. On the other hand, Al is irreversible in aqueous electrolyte with severe hydrogen evolution reaction. Here, we demonstrate a water-in-salt aluminum ion electrolyte（WISE） based on Al and lithium salts to tackle the above challenges. In the WISE system, water molecules can be co.fined within the Li+solvation structures. This diminished Al3+-H2O interaction essentially eliminates the hydrolysis effect, effectively protecting Al anode from co.rosion. Therefore, long-term Al plating/stripping can be realized. Furthermore, two types of high-performance full batteries have been demonstrated using co.per hexacyanoferrate（CuHCF, a Prussian Blue Analogues） and LiNi0.8co..1Mn0.1O2（NCM） as cathodes. The reversibility of Al anode laid the foundation for low co.t rechargeable batteries suffering for large-scale energy *** co.text: Al batteries are expected to beco.e a safe and sustainable alternative to lithium batteries. For decades, chase for a feasible Al seco.dary battery has not been successful. The key challenge is to find.suitable cathode and electrolyte materials, together with which Al anode battery can function reversibly. Currently, fatal drawbacks have impeded the practical application of Al metal batteries（AMBs）, such as sustained co.rosion of Al anode and battery case in ionic liquid electrolytes, irreversibility issues as well as severe hydrogen evolution reaction during cycling in aqueous electrolyte. Therefore, electrolyte and their electrochemical kinetics play a vital role in the performance and environmental operating limitations of high-energy Al metal batteries. In this work, we demonstrate a nearly neutral Al ion water-in-salt electrolyte（WISE） to tackle th

关键词： Water-in-salt electrolyte Rechargeable aluminum anode Solvation sheath Hybrid battery Abundance

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