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化学物理材料（英文）
化学物理材料（英文）
化学物理材料（英文）/Journal ChemPhysMater
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    Anisotropic etching of 2D layered materials

    Yuge ZhangQian LiuDeliang ZhangYue Hong...
    341-356页
    查看更多>>摘要：Two-dimensional(2D)layered materials with unique physicochemical properties,such as graphene,transition metal dichalcogenides,and hexagonal boron nitride,have shown considerable potential in the electrical and electronics industries as well as society.To realize the practical applications of 2D materials,the size,shape,and edge structures must be refined.Etching is a critical processing step in the semiconducting industry and its potential as an efficient approach for fabricating diverse nanostructures of 2D materials has been demonstrated,broadening their applications in the field of nanoelectronics.In this paper,we present an overview of recent advances in anisotropic etching of various 2D materials.Anisotropic etching and the associated mechanisms are discussed in context of the synthesis,processing,and characterization of 2D materials.An overview of the applications of anisotropic etched 2D materials is provided.Finally,the challenges and future opportunities for anisotropic etching of 2D materials are discussed.
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    Swollen hydrogel nanotechnology:Advanced applications of the rudimentary swelling properties of hydrogels

    Rong WangChongling ChengHuiyun WangDayang Wang...
    357-375页
    查看更多>>摘要：Hydrogels,which are three-dimensional networks of crosslinked hydrophilic polymers,have become crucial for various advanced applications owing to their exceptional water absorption and swelling properties.This review explores the applications of hydrogels based on their unique swelling properties,beyond their application in tradi-tional drug delivery,focusing on atmospheric water harvesting,hydrogel actuator,expansion microscopy(ExM),and 3D nanofabrication through controlled deswelling.We first discuss the factors influencing hydrogel swelling,such as network size and polymer properties.Next,we explore the mechanisms underlying hydrogel swelling,emphasizing the interplay between various forces.Hydrogel swelling enables ExM for super-resolution imaging of biological tissues,while controlled deswelling of hydrogels facilitates the creation of intricate 3D structures with nanoscale precision—a breakthrough for additive manufacturing techniques.Despite these advantages,chal-lenges still remain.We conclude this review by emphasizing the need for interdisciplinary research to address these limitations and unlock the full potential of the hydrogel technology.The future of hydrogel research holds promise for revolutionary contributions to environmental science,robotics,and biomedical imaging.
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    Experimental techniques for quantifying interactions of polymer-coated particles and surfaces:Insights for material design and optimization

    Yinan LiTo Ngai
    376-387页
    查看更多>>摘要：Polymer-coated particles and surfaces have widespread applications in various industries ranging from manufac-turing to biomedicine.A better understanding of the stability mechanisms underlying these coatings can inspire the design of novel polymer structures and help tune their functions.This can be achieved by quantifying the particle-particle and particle-surface interactions.This paper reviews several common experimental techniques utilized to measure the interactions between polymer-coated particles and surfaces quantitatively.These tech-niques include atomic force microscopy(AFM),total internal reflection microscopy(TIRM),optical tweezers(OT),and quartz crystal microbalance with dissipation monitoring(QCM-D).The examples of each measuring technique were categorized based on the types of polymer coatings and their associated factors.Additionally,this review demonstrates experimental measurements of interactions involving biological objects.By understanding the fundamental particle-particle and particle-surface interactions,researchers can gain valuable insights to guide the design and functional optimization of polymer-based materials and systems across various applications.
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    Application of covalent organic frameworks as electrode materials for supercapacitors

    Yanmin WanBaoshou ShenXiaoli ZhuZhongming Guo...
    388-414页
    查看更多>>摘要：Supercapacitors have garnered significant attention due to their superior power density,excellent cycle stability,and fast charge/discharge rates.The properties of the electrode materials determine the charge storage perfor-mance of supercapacitors.Covalent organic frameworks(COFs)are a novel class of crystalline porous polymer materials with uniform nanoscale pores,large specific surface areas,and tunable redox-active groups within the framework,which can be tuned to suit specific applications.They have flexible molecular designs and synthetic strategies,demonstrating their strong application potential in the field of energy storage.Most COFs exhibit poor inherent conductivity and low utilization of active sites,resulting in incomplete electrochemical performance.Hybrid systems can be developed by incorporating redox-active groups,hydrogen bonding,or combining COFs with other materials to improve the energy storage performance of COFs materials.In this review article,the background of COFs is summarized,including a brief introduction,design strategy,and synthesis methods.It also discusses their applications in supercapacitors and is categorized into:pristine COFs,modified COFs,and COF matrix composites.Finally,the review addresses the challenges that remain for the practical application of these materials in supercapacitors.
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    High-performance alkaline aqueous zinc battery enabled by nickel-cobalt-tellurium materials

    Na LiChenggang WangXixi ZhangChuanlin Li...
    415-421页
    查看更多>>摘要：The capacity and cycling performance of cathodes are key factors in aqueous zinc batteries(AZBs).The search for cathode materials with long cycle lives and high specific capacities is of paramount importance.In this study,a bimetallic telluride with a hollow polyhedral structure was synthesized using a hydrothermal method followed by vapor deposition.This composite exhibits high conductivity,facilitates rapid diffusion of electrolyte ions into the interior,and accelerates redox reactions,thereby enhancing electrochemical performance.The CoTe2-NiTe2 elec-trode demonstrates an impressive specific capacity of 188.8 mAh/g at 1 A/g,highlighting its efficiency in storing a significant amount of charge per unit mass during electrochemical reactions.The assembled CoTe2-NiTe2//Zn battery shows favorable capacity retention(76.4％)after 10000 cycles.The energy density is remarkably high,reaching 290.3 Wh/kg,while maintaining a power density of 1.75 kW/kg.This bimetallic telluride strategy holds great promise as an alternative cathode for AZBs.
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    Impact of doping and hydrostatic pressure on structural,electronic,optical,and mechanical properties of novel double halide perovskite Cs2LiGaBr6

    Dholon Kumar PaulWajiha Tarannum ChaudhryS M Naimul MamunM.L.Rahman...
    422-430页
    查看更多>>摘要：The emergence of lead-free halide double perovskites exhibiting bandgaps within the visible spectrum represents a substantial advancement in engineering environmentally benign perovskite solar cells.In this work,we investi-gated the structural,optical,electronic,and mechanical properties of Cs-based lead-free Cs2LiGaBr6 double halide perovskites with Mn and Cr doping under hydrostatic pressure ranging from 2 to 80 GPa using density functional theory(DFT).The introduction of dopants consistently alters the lattice parameters because of the mismatch in atomic radii,whereas increasing the pressure leads to a reduction in these constants.All the studied Cs2LiGaBr6 compounds exhibited direct band gaps,which increased slightly with doping.This is attributed to the modulation of electronic states by dopant-related defect levels.The bandgap variation under pressure is primarily attributed to changes in the quantum confinement effects induced by compressive strain.Analysis of the density of states and optical properties revealed enhanced absorption in the visible spectrum for the doped compositions,and in the UV spectrum under pressure.The study of mechanical stability confirms the ductile nature of both the doped and pristine compounds under pressure,underscoring their suitability for thin film production.This study con-tributes to the understanding of sustainable alternatives for perovskite optoelectronic applications,emphasizing Cs2LiGaBr6's potential under diverse conditions and dopant influences.
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    Rare-earth praseodymium-substituted Bi5Ti3FeO15 exhibiting enhanced piezoelectric properties for high-temperature application

    Xin-Yu YuQian WangHui-Lin LiYi-Jun Wan...
    431-439页
    查看更多>>摘要：Owing to their exceptional piezoelectric effects,piezoelectric materials play a crucial role in high-end technologies and contribute significantly to the national economy.Bismuth layer-structured ferroelectrics(BLSFs)possess high Curie temperatures,making them a focal point of research in high-temperature piezoelectric sensor devices.How-ever,their poor piezoelectric performance and low direct-current(DC)electrical resistivity hinder their effective deployment in high-temperature applications.To overcome these shortcomings,we employed composition opti-mization by partially substituting bismuth ions with rare-earth praseodymium ions.This approach enhances the piezoelectric performance and improves the DC electrical resistivity by preventing the loss of volatile bismuth ions and stabilizing the bismuth oxide layer(Bi2O2)2+,thereby reducing the concentration of oxygen vacancies.Con-sequently,we achieved a large piezoelectric constant d33 of 23.5 pC/N in praseodymium-substituted Bi5Ti3FeO15,which is three times higher than that of pure Bi5Ti3FeO15(7.1 pC/N),along with a high Curie temperature TC of 778 ℃.Additionally,the optimal composition of 4 mol％praseodymium-substituted Bi5Ti3FeO15 exhibits good thermal stability of electromechanical coupling characteristics up to 300 ℃.This study holds promise for a wide array of high-temperature piezoelectric applications and has the potential to accelerate the development of high-temperature piezoelectric sensor technologies.
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    Theoretical study on the efficiency of new organic dyes based on(E)-2-(2-(thiophen-3-yl)vinyl)-1,1'-bipyrrole as dye-sensitized solar cell sensitizers

    Mohammed OuachekradiMohammed ElkabousYasser Karzazi
    440-450页
    查看更多>>摘要：Dye-sensitized solar cells(DSSCs)have gained critical importance as a leading emerging photovoltaic technol-ogy for low-cost power generation due to their simple production,light weight,applicability to the develop-ment of flexible photovoltaic devices,and use of abundant and inexpensive materials,including advantageous metal-free organic dyes.In this context,as a continuation of our work on DSSCs,a theoretical examination us-ing density functional theory(DFT)and time-dependent density functional theory(TD-DFT)was conducted to evaluate the photovoltaic performance of eight new organic dyes.Each dye contains an electron donor group((E)-2-(2-(thiophen-3-yl)vinyl)-1,1'-bipyrrole),an electron acceptor group(cyanoacrylic acid(CCA)),and four auxiliary donor/acceptor groups,i.e.,3,4-ethylenedioxythiophene(EDOT),furan/benzothiadiazole(BTZ),dike-topyrrolopyrrole(DPP)linked to π-conjugated bridges such as styrene or thiophene.We calculated several pa-rameters for each dye,including EHOMO,ELUMO,Egap,λmax,Eex,pen-circuit photovoltage(Voc),light harvesting efficiency(LHE),regeneration driving force(△Greg),electron injection driving force(△Ginject),and excitation life-time(r)to determine the photovoltaic efficiency of each dye.The results showed that the new dyes exhibited good performance and remarkable energy-conversion efficiencies.Additionally,all investigated dyes posed as promis-ing candidates for the generation of effective DSSC sensitizers,particularly M6,which contained a styrene-linked EDOT auxiliary donor group.
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    A first look at the formation of PEO-PDA coatings on 3D titanium

    K.V.NadaraiaD.V.MashtalyarM.A.PiatkovaA.I.Pleshkova...
    451-461页
    查看更多>>摘要：Additive manufacturing has revolutionized implantology by enabling the fabrication of customized,highly porous implants.Surface modifications using electrochemical methods can significantly enhance the bioactivity and bio-compatibility of biomaterials,including 3D-printed implants.This study investigates novel coatings on 3D tita-nium(Ti)samples.Mesh Ti samples were designed and subjected to plasma electrolytic oxidation(PEO)to form a calcium phosphate coating.Subsequently,a layer of polydopamine(PDA)was applied.The electrochemical prop-erties and morphology of the coatings were analyzed.Scanning electron microscopy(SEM)and energy-dispersive X-ray spectroscopy(EDS)revealed well-developed coatings containing calcium phosphates(including hydroxya-patite),titanium dioxide,and polymerized dopamine,suggesting promising bioactive potential.Composite layers incorporating PDA exhibited superior protective properties compared to base PEO coatings.
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    Nitrogen-doped carbon dots as efficient turn-on fluorescent probe for assay of organophosphorus pesticides

    Jiqing ZhangShushu ChuChenyu TaoJinghao Yan...
    462-469页
    查看更多>>摘要：Concerns regarding human health and food safety have generated interest in developing simple,accurate,and cost-effective strategies for evaluating organophosphorus pesticide(OP)residues.In this study,nitrogen-doped carbon dots(N-CDs)were synthesized from a common low-cost precursor via a simple pyrolysis process.The fluorescence of the N-CDs can be suppressed by p-nitrophenol,which is the hydrolysis product of the p-nitrophenyl phosphate salt catalyzed by alkaline phosphatase(ALP).A fluorescent turn-on assay for the inhibitory effect of glyphosate was developed with a low detection limit and wide linear range.Moreover,the feasibility of visualizing OPs in vegetables was demonstrated by the fluorescence imaging of glyphosate on cabbage leaves.This research not only offers a facile method for the synthesis of highly fluorescent CDs but also inspires the development of effective multi-mode sensing platforms that include fluorescent testing and imaging for monitoring pesticide residues.
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