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Competitive assembling strategy to construct carbon nitride homojunctions for boosting photocatalytic performance

Journal of Materials science & technology 2024年第5期172卷 23-32页

作者： Hua-Wei Zhang yuan-yuan li Bo li Jing-Hui shi tao huang gui-Fang huang Anlian pan Wangyu Hu Wei-qing huang school of physics&Electronic Engineering Zhengzhou University of Light IndustryZhengzhou 450002China key laboratory for Micro/Nano Optoelectronic Devices of Ministry of Education&Hunan provincial key laboratory of low-Dimensional structural physics and Devices School of Physics and ElectronicsHunan UniversityChangsha 410082China College of Materials science and Engineering Hunan UniversityChangsha 410082China

Both morphology and composition have a great influence on the properties and functions of materials,however,how to rational modulate both of them to achieve their synergistic effects has been a longstanding ***,we demonstrate a competitive assembling strategy for the construction of metal-free graphite carbon nitride(CN)homojunctions in which morphology and composition can be easily controlled simultaneously by only changing the ratio of assembly raw *** homojunctions are comprised of porous nanotubular s-doped CN(sCN)grafted with CN nanovesicles,which are derived from thermal polycondensation of melamine-thiocyanuric acid(M-t)/melamine-cyanuric acid(M-C)supramolecular hybrid *** unique architecture and component engineering endows the novel sCN-CN homojunction with abundant active sites,enhanced visible trapping ability,and intimate interface *** a result,the synthesized sCN-CN homojunctions demonstrate high photocatalytic activity for hydrogen evolution and pollutant *** developed strategy opens up intriguing opportu-nities for the rational construction of intricate metal-free heterostructures with controllable architecture and interfacial contact for applications in energy-related fields.

关键词： Competitive assembling strategy supramolecular hybrid blocks Homojunctions graphite carbon nitride photocatalytic

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Construction of 2D/2D ti_(3)C_(2)t_(x)Mxene/Cds heterojunction with photothermal effect for efficient photocatalytic hydrogen production

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Journal of Materials science & technology 2024年第4期171卷 1-9页

作者： t.y.huang Z.yang s.y.yang Z.H.Dai y.J.liu J.H.liao g.y.Zhong Z.J.xie y.p.Fang s.s.Zhang key laboratory for Biobased Materials and Energy of Ministry of Education Guangdong Laboratory for Lingnan Modern AgricultureCollege of Materials and EnergySouth China Agricultural UniversityGuangzhou 510643China school of physics and Optoelectronics South China University of TechnologyGuangzhou 510640China school of Chemical Engineering and Energy technology Guangdong Provincial Key Laboratory of Distributed Energy SystemsDongguan University of TechnologyDongguan 523808China

the insensitivity of semiconductors to visible and infrared light is a key constraint on the utilization of light energy in photocatalytic *** photocatalysts with full-spectrum absorption through surface engineering is an effective approach to fully harnessing light energy in semiconductor ***,a novel stable ti_(3)C_(2)t_(x)Mxene/Cds heterojunction catalyst is obtained by in-situ epitaxial growth of two-dimensional(2D)Cds nanosheets on 2D Mxene interface via a solvothermal *** exceptional light absorption properties of Mxene confer outstanding full-spectrum driven photocat-alytic hydrogen evolution capability upon the heterogeneous *** unique 2D/2D structure effectively mitigated the recombination of photogenerated carriers,enhancing the photocatalytic performance of the ***,the composite catalyst exhibits a significantly higher surface temperature of 80.4℃under visible light irradiation at an intensity of 0.1 W/cm^(2),which is 1.84 times higher than that of *** irradiation of visible and near infrared light,the composite catalyst with photothermal ef-fect demonstrates a remarkable hydrogen evolution rate of 65.4 mmol g^(-1)h^(-1),which is 7.2 times higher than that of Cds *** study introduces a novel approach for constructing full-spectrum absorption catalysts and expands the application of the photothermal effect in photocatalytic hydrogen evolution research.

关键词： two-dimensional structure Heterostructure photothermal effect photocatalyst Hydrogen evolution

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Upper and lower Bounds of the α-Universal triple I Method for Unified Interval Implications

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Computers, Materials & Continua 2024年第4期79卷 1063-1088页

作者： yiming tang Jianwei gao yifan huang school of Computer and Information Hefei University of TechnologyHefei230601China Department of Electrical and Computer Engineering University of AlbertaEdmontonAB T6R 2V4Canada

theα-universal triple I(α-UtI)method is a recognized scheme in the field of fuzzy reasoning,whichwas proposed by our research group *** robustness of fuzzy reasoning determines the quality of reasoning algorithms to a large extent,which is quantified by calculating the disparity between the output of fuzzy reasoning with interference and the output without ***,in this study,the interval robustness(embodied as the interval stability)of theα-UtI method is explored in the interval-valued fuzzy *** begin with,the stability of theα-UtI method is explored for the case of an individual rule,and the upper and lower bounds of its results are estimated,using four kinds of unified interval implications(including the R-interval implication,the s-interval implication,the ql-interval implication and the interval t-norm implication).through analysis,it is found that theα-UtI method exhibits good interval stability for an individual ***,the stability of theα-UtI method is revealed in the case of multiple rules,and the upper and lower bounds of its outcomes are *** results show that theα-UtI method is stable for multiple rules when four kinds of unified interval implications are used,***,theα-UtI reasoning chain method is presented,which contains a chain structure with multiple *** corresponding solutions and their interval perturbations are *** is found that theα-UtI reasoning chain method is stable in the case of chain *** application examples in affective computing are given to verify the stability of theα-*** summary,through theoretical proof and example verification,it is found that theα-UtImethod has good interval robustness with four kinds of unified interval implications aiming at the situations of an individual rule,multi-rule and reasoning chain.

关键词： Fuzzy reasoning the CRI method the triple I method fuzzy implication interval robustness

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Chinese Clinical Named Entity Recognition Using Multi-Feature Fusion and Multi-scale local Context Enhancement

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Computers, Materials & Continua 2024年第8期80卷 2283-2299页

作者： Meijing li Runqing huang xianxian qi College of Information Engineering Shanghai Maritime UniversityShanghai200306China

Chinese Clinical Named Entity Recognition(CNER)is a crucial step in extracting medical information and is of great significance in promoting medical ***,CNER poses challenges due to the specificity of clinical terminology,the complexity of Chinese text semantics,and the uncertainty of Chinese entity *** address these issues,we propose an improved CNER model,which is based on multi-feature fusion and multi-scale local context *** model simultaneously fuses multi-feature representations of pinyin,radical,part of speech(pOs),word boundary with BERt deep contextual representations to enhance the semantic representation of text for more effective entity ***,to address the model’s limitation of focusing just on global features,we incorporate Convolutional Neural Networks(CNNs)with various kernel sizes to capture multi-scale local features of the text and enhance the model’s comprehension of the ***,we integrate the obtained global and local features,and employ multi-head attention mechanism(MHA)extraction to enhance the model’s focus on characters associated with medical entities,hence boosting the model’s *** obtained 92.74%,and 87.80%F1 scores on the two CNER benchmark datasets,CCks2017 and CCks2019,*** results demonstrate that our model outperforms the latest models in CNER,showcasing its outstanding overall *** can be seen that the CNER model proposed in this study has an important application value in constructing clinical medical knowledge graph and intelligent q&A system.

关键词： CNER multi-feature fusion BilstM CNN MHA

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Efficient guiding and focusing of intense laser pulse using periodic thin slits

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Matter and Radiation at Extremes 2024年第4期9卷 29-39页

作者： l.xu t.W.huang k.Jiang C.N.Wu H.peng p.C.hen R.li H.B.Zhuo C.t.Zhou shenzhen key laboratory of Ultraintense laser and Advanced Material technology Center for Intense Laser ApplicationTechnologyand College of Engineering PhysicsShenzhen Technology UniversityShenzhen 518118People’s Republic of China

slits have been widely used in laser-plasma interactions as plasma optical components for generating high-harmonic light and controlling laser-driven particle ***,we propose and demonstrate that periodic thin slits can be regarded as a new breed of optical elements for efficient focusing and guiding of intense laser *** fundamental physics of intense laser interaction with thin slits is studied,and it is revealed that relativistic effects can lead to enhanced laser focusing far beyond the pure diffractive focusing *** addition,the interaction of an intense laser pulse with periodic thin slits makes it feasible to achieve multifold enhancement in both laser intensity and energy transfer efficiency compared with conventional *** results provide a novel method for manipulating ultra-intense laser pulses and should be of interest for many laser-based applications.

关键词： laser pulse intense

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Meromorphic Functions sharing two Values

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Wuhan University Journal of Natural sciences 2024年第1期29卷 7-12页

作者： ZHAO ying huang Zhigang school of Mathematical sciences Suzhou University of Science and TechnologySuzhou 215009JiangsuChina

let f and g be two nonconstant meromorphic functions,and n be a positive *** f^(n)(z)and g^(n)(z)share 1 CM(counting multiplicities),f(z)and g(z)share∞IM(ignoring multiplicities),and N(r,1f)+N(r,1g)=s(r,f)+s(r,g),then either f(z)≡tg(z)or f(z)g(z)≡t,where t^(n)=*** an application,shared values problems of a meromorphic function related to its shifts and difference operators are also investigated.

关键词： meromorphic function shared values difference operator shift

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Multiple Nanoparticles Coupling strategy for Enhancing Optical Filter performance of spectral splitter Used in photovoltaic/thermal system

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Journal of thermal science 2024年第1期33卷 368-382页

作者： lIANg Huaxu huang xin WANg Fuqiang CHENg Ziming DONg yan school of Energy science and Engineering Harbin Institute of TechnologyHarbin 150001China school of New Energy Harbin Institute of Technology at WeihaiWeihai 264209China school of Materials science and Engineering Nanyang Technological UniversitySingapore 639798Singapore

selective absorptive nanofluid can pre-absorb certain sunlight wavelength that cannot be used by pV and transmits remaining sunlight to the surface of pV,which can decouple pV from the thermal receiver *** order to improve the harvesting of electricity and high-temperature thermal nanofluid,it is important to design an optimal optical filter window(transmit sunlight with wavelengths of 732-1067 nm to the surface of the photovoltaic cell and absorb the remaining sunlight).However,designing optimal optical filter is facing following challenges:(1) inherently narrow selective absorptivity property of single nanoparticle;(2) simplified numerical calculation method calculating transmittance;(3) ignoring the shape of the *** this study,the idea of using multiple nanoparticles coupling effect to design an optical filter is proposed,which can superimpose the narrow absorption bandwidth of different nanoparticles to obtain a wide absorption bandwidth of the whole *** addition,an improved transmission method considering light-matter interaction at air/vessel and liquid/vessel interfaces is adopted to compute the *** results calculated by improved transmission method are more accurate than widely used traditional lambert-Beer law,which is verified by experimental ***,the effect of nanoparticle shape on spectral transmittance is also investigated,which shows that spiny Ag can approximately extend absorbance from 400 nm to 600 nm compared to nanosphere ***,the results show that optical filter efficiency of nanofluids with multiple nanoparticles coupling(Ag,spiny Ag,ZnO,ItO) can reached up to 35%.

关键词： solar energy pV/t nanofluid optimal optical filter radiative transfer spectral splitting

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Asymmetric Electrolytes Design for Aqueous Multivalent Metal Ion Batteries

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Nano-Micro letters 2024年第3期16卷 227-253页

作者： xiaochen yang xinyu Wang yue xiang longtao Ma Wei huang Frontiers science Center for Flexible Electronics Institute of Flexible ElectronicsNorthwestern Polytechnical UniversityXi’an 710072People’s Republic of China school of Materials science and Engineering Guangdong Provincial Key Laboratory of Advanced Energy Storage MaterialsSouth China University of TechnologyGuangzhou 510641People’s Republic of China

With the rapid development of portable electronics and electric road vehicles,high-energy-density batteries have been becoming front-burner ***,homogeneous electrolyte cannot simultaneously meet diametrically opposed demands of high-potential cathode and low-potential anode,which are essential for high-voltage ***,homogeneous electrolyte is difficult to achieve bi-or multi-functions to meet different requirements of *** comparison,the asymmetric electrolyte with bi-or multi-layer disparate components can satisfy distinct requirements by playing different roles of each electrolyte layer and meanwhile compensates weakness of individual ***,the asymmetric electrolyte can not only suppress by-product sedimentation and continuous electrolyte decomposition at the anode while preserving active substances at the cathode for high-voltage batteries with long cyclic *** this review,we comprehensively divide asymmetric electrolytes into three categories:decoupled liquid-state electrolytes,bi-phase solid/liquid electrolytes and decoupled asymmetric solid-state *** design principles,reaction mechanism and mutual compatibility are also studied,***,we provide a comprehensive vision for the simplification of structure to reduce costs and increase device energy density,and the optimization of solvation structure at anolyte/catholyte interface to realize fast ion transport kinetics.

关键词： Asymmetric electrolyte Aqueous multivalent metal ion batteries Electrochemical stability windows Electrolyte interface

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Electro-optic 3D snapshot of a laser wakefield accelerated kilo-ampere electron bunch

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light(science & Applications) 2024年第5期13卷 823-834页

作者： kai huang Zhan Jin Nobuhiko Nakanii tomonao Hosokai Masaki kando kansai Institute for photon science(kpsI) National Institutes for Quantum Science and Technology(QST)KyotoJapan. laser Accelerator R&D Innovative Light Sources DivisionRIKEN SPring-8 CenterHyogoJapan. sANkEN Osaka UniversityOsakaJapan

laser wakefield acceleration,as an advanced accelerator concept,has attracted great attentions for its ultrahigh acceleration gradient and the capability to produce high brightness electron *** three-dimensional(3D)density serves as an evaluation metric for the particle bunch quality and is intrinsically related to the applications of an *** its significance,this parameter has not been experimentally measured in the investigation of laser wakefield *** report on an electro-optic 3D snapshot of a laser wakefield electron bunch at a position outside the *** 3D shape of the electron bunch was detected by simultaneously performing optical transition radiation imaging and electro-optic *** 3D structures to a few micrometer levels were reconstructed using a genetic *** electron bunch possessed a transverse size of less than 30 *** current profile shows a multi-peak *** main peak had a duration ofs and a peak current>1 *** maximum electron 3D number density was~9×10^(21)m^(-3).this research demonstrates a feasible way of 3D density monitoring on femtosecond kilo-ampere electron bunches,at any position of a beam transport line for relevant applications.

关键词： laser acceleration field

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Vibronic coupling effect on intersystem crossing rates of tADF emitters

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Chinese Journal of structural Chemistry 2024年第6期43卷 22-24页

作者： xin huang yi Zhao Wanzhen liang state key laboratory of physical Chemistry of solid surfaces iChEMFujian Provincial Key Lab of Theoretical and Computational ChemistryCollege of Chemistry and Chemical EngineeringXiamen UniversityXiamen361005China

to take advantage of all the singlet and triplet excitons and then achieve 100%internal quantum efficiency in OlED devices,the scientists have proposed the thermally activated delayed fluorescence(tADF)strategy which tries to achieve"delayed"fluorescence by converting triplet excitons to singlet excitons through a reverse intersystem crossing(IsC/RIsC)process with the help of thermal activation[1].In the early days,the efficient RIsC processes were facilitated by a negligible energy gap(△E_(st))and a large spin-orbit coupling(sOC)matrix element(sOCME)between the first singlet(s_(1))and triplet(t_(1))excited states.

关键词： coupling system emitter

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