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mxenes and heterostructures-based electrocatalysts for hydrogen evolution reaction:Recent developments and future outlook

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Journal of Energy Chemistry 2024年第5期92卷 176-206页

作者： Abdul Hanan Hafiz Taimoor Ahmed Awan Faiza Bibi Raja Rafidah Raja Sulaiman Wai Yin Wong Rashmi Walvekar Seema Singh Mohammad Khalid Sunway Centre for Electrochemical Energy and Sustainable Technology(SCEEST) School of Engineering and TechnologySunway UniversityNo.5 Jalan UniversitiBandar Sunway47500 Petaling JayaSelangorMalaysia Fuel Cell Institute Universiti Kebangsaan Malaysia43600 UKM BangiSelangorMalaysia Faculty of Innovation and Technology School of EngineeringChemical Engineering ProgrammeNo.1 Jalan Taylor’sTaylor’s University Malaysia47500 Subang JayaSelangorMalaysia Chitkara Centre for Research and Development Chitkara UniversityHimachal Pradesh 174103India School of Applied and Life Sciences Uttaranchal UniversityDehradunUttarakhand 248007India Manipal Institute of Technology Manipal Academy of Higher EducationManipal 576104KarnatakaIndia Centre of Research Impact and Outcome Chitkara UniversityPunjab 140401India

The increasing focus on electrocatalysis for sustainable hydrogen(H_(2))production has prompted significant interest in mxenes,a class of two-dimensional(2D)materials comprising metal carbides,carbonitrides,and *** materials exhibit intriguing chemical and physical properties,including excellent electrical conductivity and a large surface area,making them attractive candidates for the hydrogen evolution reaction(HER).This scientific review explores recent advancements in MXene-based electrocatalysts for HER *** discusses various compositions,functionalities,and explicit design principles while providing a comprehensive overview of synthesis methods,exceptional properties,and electro-catalytic approaches for H_(2) production via electrochemical ***,challenges and future prospects in designing mxenes-based electrocatalysts with enhanced kinetics are highlighted,emphasizing the potential of incorporating different metals to expand the scope of electrochemical *** review suggests possible efforts for developing advanced mxenes-based electrocatalysts,particularly for efficient H_(2) generation through electrochemical water-splitting reactions..

关键词： mxenes Electrocatalyst Water Splitting Hydrogen Generation Clean Energy

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mxenes for perovskite solar cells:Progress and prospects

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Journal of Energy Chemistry 2023年第6期81卷 443-461,I0010页

作者： Lin Yang Peng Li Jiangang Ma Xintong Zhang Xiao-Feng Wang Yichun Liu Key Laboratory for UV-Emitting Materials and Technology of Ministry of Education Northeast Normal UniversityChangchun 130024JilinChina Key Laboratory of Physics and Technology for Advanced Batteries(Ministry of Education) College of PhysicsJilin UniversityChangchun 130012JilinChina

Perovskite solar cells(PSCs)have been developed over the past decade as the forefront of the state-of-theart photovoltaic technologies owing to their high efficiency and low cost,where nanostructured functional materials play key roles in performance *** a versatile class of two-dimensional(2D)materials,transition metal carbides/nitrides mxenes have gained enormous attentions in PSCs since 2018 due to their superior properties such as excellent metallic conductivity,abundant surface functional groups,tunable work functions,high optical transparency,and mechanical *** explorations of mxenes are of significance in performance promotion and commercialization expansion of *** such,this review focuses on the diversified advantages of mxenes,comprehensively summarizing their applications and developments in PSCs as additives,electron/hole transporting layers,interfacial engineering layers,and electrodes in sequence and explaining the relevant mechanisms ***,the problems emerged from the related studies are considered and the corresponding suggestions like opening up the type of mxenes usage,taking further insight of the modulation of surface termination groups on Fermi levels,understanding the effect on energy level structures of perovskite or other functional layers,and realizing commercialization,*** provided for the future in-depth *** review is intended to provide overall perspective of the current status of mxenes and highlight the direction for the future advancements in mxenes design and processes towards efficient,stable,large-area,and low-cost PSCs.

关键词： mxenes Two-dimensional materials Perovskite solar cells Photovoltaic technologies Environment

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mxenes and MXene-based composites for energy conversion and storage applications

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Journal of Materiomics 2023年第6期9卷 1067-1112页

作者： Zhuohao Xiao Xiaodong Xiao Ling Bing Kong Hongbo Dong Xiuying Li Xinyuan Sun Bin He Shuangchen Ruan Jianpang Zhai School of Mechanical and Vehicle Engineering Linyi UniversityLinyi276000ShandongChina School of Materials Science and Engineering Jingdezhen Ceramic UniversityJingdezhen333403JiangxiChina College of New Materials and New Energies Shenzhen Technology UniversityShenzhen518118GuangdongChina Department of Physics Jinggangshan UniversityJi'an343009JiangxiChina

mxenes have received extensive attention from scholars due to their unique layered structure,significant electrical conductivity,and excellent mechanical *** addition to their pristine forms,they could also be incorporated with other components for attaining hybrids and nanocomposites,accompanying with amplified *** has been widely used in lithium batteries,supercapacitors,electromagnetic shielding,tumor therapy,biosensors,photocatalysis,and other fields,and has shown great application potential in energy conversion and *** purpose of this article is to encyclopaedically overview the latest progress in synthesis and characterization of mxenes,while their potential applications in energy conversation such as water splitting and solar cells,as well as in energy storage such as Li-ion batteries,supercapacitors,and hydrogen energy will be comprehensively *** opportunities and challenges are summarized.

关键词： mxenes 2D materials Materials characterization Energy converstion Energy storage

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Recent Advances and Perspectives of Lewis Acidic Etching Route:An Emerging Preparation Strategy for mxenes

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Nano-Micro Letters 2023年第5期15卷 187-235页

作者： Pengfei Huang Wei-Qiang Han School of Materials Science and Engineering Zhejiang UniversityHangzhou 310027People’s Republic of China

Since the discovery in 2011,mxenes have become the rising star in the field of two-dimensional *** from the metallic-level conductivity,large and adjustable gallery spacing,low ion diffusion barrier,rich surface chemistry,superior mechanical strength,mxenes exhibit great application prospects in energy storage and conversion,sensors,optoelectronics,electromagnetic interference shielding and ***,two issues seriously deteriorate the further development of *** is the high experimental risk of common preparation methods such as HF etching,and the other is the difficulty in obtaining mxenes with controllable surface ***,Lewis acidic etching,as a brand-new preparation strategy for mxenes,has attracted intensive attention due to its high safety and the ability to endow mxenes with uniform ***,a comprehensive review of Lewis acidic etching method has not been reported ***,we first introduce the Lewis acidic etching from the following four aspects:etching mechanism,terminations regulation,in-situ formed metals and delamination of multi-layered ***,the applications of mxenes and MXene-based hybrids obtained by Lewis acidic etching route in energy storage and conversion,sensors and microwave absorption are carefully ***,some challenges and opportunities of Lewis acidic etching strategy are also presented.

关键词： Lewis acidic etching mxenes Etching mechanism Termination regulation In-situ formed metals Delamination Application

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mxenes in tribology:Current status and perspectives

Advanced Powder Materials

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Advanced Powder Materials 2023年第2期2卷 11-38页

作者： Xiaonan Miao Zhangpeng Li Shuwen Liu Jinqing Wang Shengrong Yang State Key Laboratory of Solid Lubrication Lanzhou Institute of Chemical PhysicsChinese Academy of SciencesLanzhou 730000China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China Yantai Zhongke Research Institute of Advanced Materials and Green Chemical Engineering Yantai 264006China Qingdao Center of Resource Chemistry&New Materials Qingdao 266000China

mxenes are an emerging class of new two-dimensional materials, which have been widely used in energy storage,catalysis, sensing, biology, and other ﬁelds due to their unique structure and properties. The distinct structure,low shear resistance, and easy-to-modify ability endow mxenes with particularly superior lubrication *** review highlights the research status and applications of mxenes lubrication categorized into solid lubricants, lubricant additives, and reinforcement phase parts, summaries the inﬂuencing factors and lubricationmechanisms of mxenes lubrication, points out some unexplored research ﬁelds and unsettled questions, and thenputs forwards possible solutions and prospects for the future research. The lubrication advances and potentials ofmxenes are fully veriﬁed. Predictably, the emerging mxenes lubricants will exhibit remarkable applicationprospects in advanced manufacturing such as machining industries, automotive industries, micro/nanoelectromechanical systems, and spacecraft components.

关键词： mxenes Lubricant Inﬂuencing factors Lubrication mechanisms Advanced manufacturing

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Recent progress of mxenes as the support of catalysts for the CO oxidation and oxygen reduction reaction

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Chinese Chemical Letters 2020年第4期31卷 931-936页

作者： Yiying Zhang Xilin Zhang Cheng Cheng Zongxian Yang School of Physics Henan Normal UniversityXinxiang 453007China College of Chemistry Key Laboratory of Theoretical&Computational Photochemistry of Ministry of EducationBeijing Normal UniversityBeijing 100875China National Demonstration Center for Experimental Physics Education(Henan Normal University) Xinxiang 453007China

mxenes,the new family of two-dimensional(2D)transition metal carbides/nitrides,can serve as the substrate materials for the catalysts due to the large specific surface area,tunable electronic structures and thermal *** first 2D layered MXene,Ti3C2,was successfully obtained by selective etching of the A element from the MAX phases using hydrofluoric acid(HF)at room temperature in *** this review,we summarize the preparation,structure of mxenes and discuss the recent progress in potential application of mxenes in catalysis,mainly in CO oxidation and oxygen reduction reaction(ORR),from the views of both experimental and theoretical inve *** outlook of the major challenges and future directions on research of mxenes is also included.

关键词： mxenes Catalysis Substrate material CO oxidation ORR

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Tuning mxenes Towards Their Use in Photocatalytic Water Splitting

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Energy & Environmental Materials 2024年第6期7卷 321-331页

作者： Diego Ontiveros Sergi Vela Francesc Viñes Carmen Sousa Departament de Ciència de Materials i Química Física&Institut de Química Teòrica i Computacional(IQTCUB) Universitat de Barcelonac/Martíi Franquès 1-1108028 BarcelonaSpain

Finding appropriate photocatalysts for solar-driven water(H_(2)O)splitting to generate hydrogen(H_(2))fuel is a challenging task,particularly when guided by conventional trial-and-error experimental ***,density functional theory(DFT)is used to explore the mxenes photocatalytic properties,an emerging family of two-dimensional(2D)transition metal carbides and nitrides with chemical formula M_(n+1)X_(n)T_(x),known to be semiconductors when having T_(x)*** than 4,000 MXene structures have been screened,considering different compositional(M,X,T_(x),and n)and structural(stacking and termination position)factors,to find suitable mxenes with a bandgap in the visible region and band edges that align with the water-splitting half-reaction *** from bandgap analysis show how,in general,mxenes with n=1 and transition metals from group III present the most cases with bandgap and promising sizes,with C-mxenes being superior to *** band alignment calculations of candidate systems with a bandgap larger than 1.23 eV,the minimum required for a water-splitting process,Sc_(2)CT_(2),Y_(2)CT_(2)(T_(x)=Cl,Br,S,and Se)and Y_(2)CI_(2)are highlighted as adequate photocatalysts.

关键词： Density Functional Theory mxenes Photocatalysis Water Splitting

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2D mxenes as Co-catalysts in Photocatalysis:Synthetic Methods

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Nano-Micro Letters 2019年第4期11卷 403-424页

作者： Yuliang Sun Xing Meng Yohan Dall’Agnese Chunxiang Dall’Agnese Shengnan Duan Yu Gao Gang Chen Xiao-Feng Wang Key Laboratory of Physics and Technology for Advanced Batteries(Ministry of Education) College of PhysicsJilin UniversityChangchun 130012People’s Republic of China Jilin Key Engineering Laboratory of New Energy Materials and Technologies Jilin UniversityChangchun 130012People’s Republic of China A.J.Drexel Nanomaterials Institute and Department of Materials Science and Engineering Drexel UniversityPhiladelphiaPA 19104USA Institute for Materials Discovery Faculty of Maths and Physical SciencesUniversity College LondonLondon WC1E 7JEUK

Since their seminal discovery in 2011,two-dimensional(2D)transition metal carbides/nitrides known as mxenes,that constitute a large family of 2D materials,have been targeted toward various applications due to their outstanding electronic *** functioning as co-catalyst in combination with certain photocatalysts have been applied in photocatalytic systems to enhance photogenerated charge separation,suppress rapid charge recombination,and convert solar energy into chemical energy or use it in the degradation of organic *** photocatalytic performance greatly depends on the composition and morphology of the photocatalyst,which,in turn,are determined by the method of preparation ***,we review the four different synthesis methods(mechanical mixing,self-assembly,in situ decoration,and oxidation)reported for mxenes in view of their application as co-catalyst in *** addition,the working mechanism for mxenes application in photocatalysis is discussed and an outlook for future research is also provided.

关键词： mxenes Photocatalysis Co-catalyst Synthetic methods

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mxenes: Versatile 2D materials with tailored surface chemistry and diverse applications

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Journal of Energy Chemistry 2024年第3期90卷 253-293,I0008页

作者： Sunil Kumar Nitu Kumari Yongho Seo Department of Nanotechnology and Advanced Materials Engineering and HMC Sejong UniversitySeoul 05006South Korea School of Studies in Chemistry Jiwaji UniversityGwalior 474011India

mxenes,the most recent addition to the 2D material family,have attracted significant attention owing to their distinctive characteristics,including high surface area,conductivity,surface characteristics,mechanical strength,*** review begins by presenting mxenes,providing insights into their structural characteristics,synthesis methods,and surface functional *** review covers a thorough analysis of MXene surface properties,including surface chemistry and termination group *** properties of mxenes are influenced by their synthesis,which can be fluorine-based or ***-based synthesis techniques involve etching with fluorine-based reagents,mainly including HF or LiF/HCl,while fluorine-free methods include electrochemical etching,chemical vapor deposition(CVD),alkaline etching,Lewis acid-based etching,*** techniques result in the emergence of functional groups such as-F,-O,-OH,-Cl,*** the mxenes surface,depending on the synthesis method *** of mxenes,such as electrical conductivity,electronic properties,catalytic activity,magnetic properties,mechanical strength,and chemical and thermal stability,are examined,and the role of functional groups in determining these properties is *** review delves into the diverse applications of mxenes,encompassing supercapacitors,battery materials,hydrogen storage,fuel cells,electromagnetic interference(EMI) shielding,pollutant removal,water purification,flexible electronics,sensors,additive manufacturing,catalysis,biomedical and healthcare fields,***,this article outlines the challenges and opportunities in the current and future development of mxenes research,addressing various aspects such as synthesis scalability,etching challenges,and multifunctionality,and exploring novel *** review concludes with future prospects and conclusions envisioning the impact of mxenes on future technologies and innovation.

关键词： mxenes 2D materials Surface chemistry mxenes structure Synthesis Applications

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Insight into the catalytic activity of mxenes for hydrogen evolution reaction

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Science Bulletin 2018年第21期63卷 1397-1403页

作者： Xiaowan Bai Chongyi Ling Li Shi Yixin Ouyang Qiang Li Jinlan Wang School of Physics Southeast University

mxenes have exhibited great potential as cost-effective electrocatalysts for hydrogen evolution reaction(HER). However, insight into the origin of activity is still missing. Herein, on the basis of a systematical investigation of the HER performance of 20 mxenes(M_2NO_2 and M_2CO_2, M = Sc, Ti, V, Cr, Zr, Nb, Mo,Hf, Ta and W), a Fermi-abundance model is proposed to understand variation of the activity in different mxenes. It is found that the occupied p electronic states of surface O atoms play a decisive role in the HER activity of mxenes. More importantly, Ti_2NO_2 and Nb_2NO_2 are found to be promising HER electrocatalysts with the free energy for hydrogen adsorption close to zero. This work not only provides possible catalysts for HER, the developed Fermi-abundance model but also is applicable to other two-dimensional materials and may serve as a simple descriptor of the intrinsic HER activity.

关键词： Two-dimensional materials mxenes Hydrogen evolution reaction Fermi-abundance model Density functional theory

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