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2d/2d BiOIO_(3)/g-C_(3)N_(4) S-scheme hybrid heterojunction with face-to-face interfacial contact for effective photocatalytic H_(2) production and norfloxacin degradation

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journal of Materials Science & Technology 2023年第17期148卷 19-30页

作者： dong-Eun Lee Satyanarayana Moru KasalaPrabhakar Reddy Wan-Kuen jo Surendar Tonda School of Architecture CivilEnvironmental and Energy EngineeringKyungpook National University80 Daehak-roBuk-guDaegu 41566Republic of Korea School of Advanced Sciences Vellore Institute of Technology-Andhra Pradesh(VIT-AP University)AmaravatiAndhra Pradesh 522237India department of Chemistry and Biochemistry University of South Carolina631 Sumter StreetColumbiaSC 29208United States

A two-dimensional(2d)/2d hybrid heterojunction with face-to-face interfacial assembly is a desirable dimensionality design with significant potential for various photocatalytic applications due to the large interfacial contact area,which facilitates charge migration and ***,we developed an ef-ficient 2d/2d hybrid heterojunction consisting of BiOIO 3 nanoplates(BIO)and g-C_(3)N_(4) nanosheets(CN)using a simple but effective in situ growth method for photocatalytic aqueous antibiotic degradation and H_(2) *** face-to-face interfacial assembly of the BIO and CN components in the BIO/CN hy-brid heterojunction was verified using electron ***,the BIO/CN hybrid heterojunc-tion outperformed both the BIO and CN counterparts in terms of norfloxacin degradation and H_(2) gen-eration under simulated solar light ***,the photocatalytic performance of the hybrid catalyst remained nearly unchanged throughout five consecutive test *** exceptional performance and stability of the hybrid catalyst are attributable to its extended optical absorption range,large interfa-cial contact area provided by the face-to-face assembly in the 2d/2d hybrid configuration,and enhanced photoexcited charge separation efficiency and redox power of the separated charges,which are supported by an efficient S-scheme charge transfer *** study illuminates the rational construction of novel 2d/2d S-scheme hybrid heterojunction photocatalysts with practical applications in environmental remediation and sustainable energy generation.

关键词： g-C_(3)N_(4) BiOIO_(3) Face-to-face interface 2d/2d heterojunction S-scheme charge transfer Solar energy conversion

Trace metal dynamics in an industrialized Brazilian river:A combined application of Zn isotopes,geochemical partitioning,and multivariate statistics

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journal of Environmental Sciences 2021年第3期33卷 313-325页

作者： Myller S.Tonhá daniel F.Araújo Rafael Araújo Bruno C.A.Cunha Wilson Machado joelma F.Portela joão PR Souza Hikari K.Carvalho Elton L.dantas Henrique L.Roig Patrick Seyler Jeremie Garnier Universidade de Brasília Instituto de GeociênciasCampus Darcy RibeiroL2Asa Norte70910900 BrasíliaDistrito FederalBrazil Laboratoire de Biogéochimie des Contaminants Métalliques IfremerCentre AtlantiqueF44311 Nantes Cedex 3France Institute of Geosciences University of São PauloRua do Lago562São Paulo 05508-080Brazil Universidade Federal Fluminense Programa de GeoquímicaCampus do ValonguinhoNiteróiRio de JaneiroBrazil Analytical and Environmental Chemistry Laboratory Instituto de QuímicaUniversity of BrasiliaBrasiliaFederal District 70919-970Brazil Laboratoire Mixte International“Observatoire des Changements Environnementaux”(LMI OCE) Institut de Recherche pour le Développement/University of BrasiliaCampus Darcy RibeiroBrasiliaBrazil Hydrosciences Montpellier Universitéde MontpellierInstitut de Recherche pour le développementCentre National de la Recherche ScientifiqueMontpellierFrance

The Paraiba do Sul(PSR)and Guandu Rivers(GR)water diversion system(120 km long)is located in the main industrial pole of Brazil and supplies drinking water for 9.4 million people in the metropolitan region of Rio de *** study aims to discern the trace metals dynamics in this complex aquatic *** used a combined approach of geochemical tools such as geochemical partitioning,Zn isotopes signatures,and multivariate *** and Pb concentrations in Suspended Particulate Matter(SPM)and sediments were considerably higher in some *** sediment partition of As,Cr,and Cu revealed the residual fraction(F4)as the main fraction for these elements,indicating low *** and Pb were mostly associated with the exchangeable/carbonate(F1)and the reducible(F2)fractions,respectively,implying a higher susceptibility of these elements to being released from *** isotopic compositions of sediments and SPM fell in a binary mixing source process between lithogenic(δ^(66/64)Zn_(JMC)≈+0.30‰)and anthropogenic(δ^(66/64)Zn_(JMC)≈+0.15‰)end *** lighterδ^(66/64)Zn_(JMC)values accompanied by high Zn concentrations in exchangeable/carbonate fraction(ZnF1)enable the tracking of Zn anthropogenic sources in the studied ***,the results indicated that Hg,Pb,and Zn had a dominant anthropogenic origin linked to the industrial activities,while As,Cr,and Cu were mainly associated with lithogenic *** work demonstrates how integrating geochemical tools is valuable for assessing geochemical processes and mixing source effects in anthropized river watersheds.

关键词： Metal pollution Isotope tracer Sequential extraction Anthropogenic activity

Polymeric Nanomaterials as Electrolyte and Electrodes in Supercapacitors

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Nano Research 2009年第9期2卷 733-739页

作者： joão P.C.Trigueiro Raquel S.Borges Rodrigo L.Lavall Hallen d.R.Calado Glaura G.Silva departamento de Química Instituto de Ciências ExatasUniversidade Federal de Minas GeraisCEP 31270-901Belo HorizonteBrazil

The energy challenge requires a broad range of options for energy harvesting,storage,and *** have produced polymeric coatings by spraying,to be used as electrolyte and electrodes in a fl exible electrochemical double layer capacitor.A thermoplastic polyurethane and a low molecular weight block copolyether were employed with LiClO_(4) to prepare solid polymeric *** black(CB)and multi-walled carbon nanotubes(MWNTs)were dispersed in the polymer blend electrolyte to produce nanostructured composite *** conductivities increased with the addition of block copolyether and carbon nanotubes to the electrolyte and electrode,*** electron microscopy(SEM)and atomic force microscope(AFM)images of the nanocomposite electrodes showed nanoagglomerates of CB connected by carbon *** solid supercapacitor prepared with these new materials as electrolyte and electrodes showed superior performance to other similar *** resulting safe and fl exible multilayer device can meet the requirements of modern devices.

关键词： Polymeric electrolyte blend nanocomposite electrode carbon black carbon nanotube supercapacitor

Effects of cryogenic temperature on tensile and impact properties in a medium-entropy VCoNi alloy

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journal of Materials Science & Technology 2021年第31期90卷 159-167页

作者： dae Cheol Yang Yong Hee jo Yuji Ikeda Fritz Kormann Seok Su Sohn department of Materials Science and Engineering Korea University02841 SeoulSouth Korea Metallic Materials division Korea Institute of Materials Science51508 ChangwonSouth Korea Institute for Materials Science University of StuttgartPfaffenwaldring 5570569 StuttgartGermany Max-Planck-Institut für Eisenforschung Max-Planck-Straβe 140237 DüsseldorfGermany department of Materials Science and Engineering Delft University of TechnologyMekelweg 22628 CD DelftThe Netherlands

Multi-principal element alloys usually exhibit outstanding strength and toughness at cryogenic temperatures,especially in CrMnFeCoNi and CrCoNi *** remarkable cryogenic properties are attributed to the occurrence of deformation twins,and it is envisaged that a reduced stacking fault energy(SFE)transforms the deformation mechanisms into advantageous properties at cryogenic temperatures.A recently reported high-strength VCoNi alloy is expected to exhibit further notable cryogenic ***,no attempt has been made to investigate the cryogenic properties in detail as well as the underlying deformation ***,the effects of cryogenic temperature on the tensile and impact properties are investigated,and the underlying mechanisms determining those properties are revealed in terms of the temperature dependence of the yield strength and deformation *** the strength and ductility were enhanced at 77 K compared to 298 K,while the Charpy impact toughness gradually decreased with *** planar dislocation glides remained unchanged at 77 K in contrast to the CrMnFeCoNi and CrCoNi alloys resulting in a relatively constant and slightly increasing SFE as the temperature decreased,which is confirmed via ab initio ***,the deformation localization near the grain boundaries at 298 K changed into a homogeneous distribution throughout the whole grains at 77 K,leading to a highly sustained strain hardening *** reduced impact toughness is directly related to the decreased plastic zone size,which is due to the reduced dislocation width and significant temperature dependence of the yield strength.

关键词： Medium-entropy alloy Cryogenic temperature Tensile property Charpy impact property Stacking fault energy

Information Extraction Based on Multi-turn Question Answering for Analyzing Korean Research Trends

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Computers, Materials & Continua 2023年第2期74卷 2967-2980页

作者： Seongung jo Heung-Seon Oh Sanghun Im Gibaeg Kim Seonho Kim School of Computer Science and Engineering KOREATECHCheonan31253Korea Korea Institute of Science and Technology Information KISTIDaejeon34141Korea

Analyzing Research and development(R&d)trends is important because it can influence future decisions regarding R&d *** typical trend analysis,topic or technology taxonomies are employed to compute the popularities of the topics or codes over *** it is simple and effective,the taxonomies are difficult to manage because new technologies are introduced ***,recent studies exploit deep learning to extract pre-defined targets such as problems and *** on the recent advances in question answering(QA)using deep learning,we adopt a multi-turn QA model to extract problems and solutions from Korean R&d *** the previous research,we use the reports directly and analyze the difficulties in handling them using QA style on Information Extraction(IE)for sentence-level benchmark *** investigating the characteristics of Korean R&d,we propose a model to deal with multiple and repeated appearances of targets in the ***,we propose a model that includes an algorithm with two novel modules and a prompt.A newly proposed methodology focuses on reformulating a question without a static template or pre-defined *** show the effectiveness of the proposed model using a Korean R&d report dataset that we constructed and presented an in-depth analysis of the benefits of the multi-turn QA model.

关键词： Natural language processing information extraction question answering multi-turn Korean research trends

The fit of Industry 4.0 applications in manufacturing logistics： a multiple case study

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Advances in Manufacturing 2017年第4期5卷 344-358页

作者： jo Wessel Strandhagen Erlend Alfnes Jan Ola Strandhagen Logan Reed Vallandingham department of Mechanical and Industrial Engineering Norwegian University of Science and TechnologyTrondheim Norway

The fourth industrial revolution, Industry 4.0, is expected to cause disruptive changes in industrial produc- tion. It is driven by rapid technological developments and the need for manufacturing companies to make themselves independent of high labor costs. Industry 4.0 concerns several aspects of industrial production, including manu- facturing logistics, business models and products and ser- vices. The applications of Industry 4.0 have been vastly outlined. However, the fit of Industry 4.0 applications in different production environments is not clear. The purpose of this paper is to identify and investigate the Industry 4.0 technologies that are applicable to manufacturing logistics, and how the production environment influences the appli- cability of these technologies. This is done through a multiple case study of four Norwegian manufacturing companies. The findings from the study indicate that the applicability of Industry 4.0 in manufacturing logistics is dependent on the production environment. Companies with a low degree of production repetitiveness see less potential in applying Industry 4.0 technologies in manufacturing logistics, while companies with a highly repetitive pro- duction see a higher potential.

关键词： Industry 4.0 Manufacturing logistics Production planning and control Production environment

2d reduced graphene oxide-titania nanocomposites synthesized under different hydrothermal conditions for treatment of hazardous organic pollutants

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Particuology 2018年第1期16卷 165-173页

作者： Migyeong Kim Won-Hwa Hong Woong Kim Sung Hyuk Park Wan-Kuen jo department of Environmental Engineering Kyungpook National University Daegu 702-701 Republic of Korea School of Architecture Kyungpook National University Daegu 702-701 Republic of Korea department of Materials Science and Metallurgical Engineering Kyungpook National University Daegu 702-701 Republic of Korea

Two-dimensional reduced graphene oxide-titania （RGO-TiO2） composites were prepared using a single- step hydrothermal method under various hydrothermal reaction conditions. The morphological and surface characteristics of the RGO-TiO2 composites and reference materials were determined. The RGO-TiO2 composites showed photocatalytic activity for the decomposition of two target pollutants that was superior to both pure TiO2 and RGO under fluorescent daylight lamp illumination. The photo- catalytic activity of the RGO-TiO2 composite increased as the hydrothermal treatment time increased from 1 to 24 h, but then it decreased as the time increased to 36 h, which indicated the presence of an optimal treatment time. RGO-TiO2 composites activated by violet light-emitting diodes （LEds） displayed lower decomposition efficiency than those activated by a daylight lamp, likely because of the lower light intensity of violet LEds （0.2 mW/cm2） when compared with that of the daylight lamp （1.4mW/cm2）. However, the photocatalytic decomposition of the target pollutants using the RGO-TiO2 composite was more energy-efficient using the violet LEds. The photocatalytic reaction rates increased as the residence time decreased, whereas the reverse was true for the decomposition efficiency.

关键词： TiO2 composite Continuous-flow mode Hydrothermal time VioletLight emitting diode

Organic electrode materials for fast-rate,high-power battery applications

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Materials Reports(Energy) 2021年第1期1卷 4-25页

作者： Cara N.Gannett Luis Melecio-Zambrano Monica jo Theibault Brian M.Peterson Brett P.Fors Hector d.Abruna department of Chemistry and Chemical Biology Cornell UniversityIthacaNY14853USA

The development of new battery materials with fast charging/discharging capabilities is necessary to meet the growing demands of modern *** counter ion transport in inorganic materials(generally by de/intercalation)currently limits charge/discharge rates in lithium-ion batteries,the weak intermolecular forces in organic materials result in flexible,spacious structures that offer improved ion transport ***,we present the principles which enable fast rate capabilities in organic electrode materials,accompanied by specific literature examples illustrating exceptional rate *** discuss approaches to material design which support electron and/or ion transport and the limitations associated with each *** review aims to highlight the unique characteristics of organic materials as high-power density electrodes and inspire continued work in the field.

关键词： Energy storage Batteries Organic materials High-power Electrochemistry

太平洋十年涛动对全球地表气温变化的影响足迹

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Science Bulletin 2024年第4期69卷 445-448页

作者：梁莉莉 Alan d.Ziegler 陈德亮 Philippe Ciais 李肇新梁时婧王大山徐荣嵘曾振中 School of Environmental Science and Engineering Southern University of Science and TechnologyShenzhen 518055China SUSTech Energy Institute for Carbon Neutrality Southern University of Science and TechnologyShenzhen 518055China Faculty of Fisheries Technology and Aquatic Resources Mae Jo UniversityChiang Mai 50000Thailand Regional Climate Group Department of Earth SciencesUniversity of GothenburgGothenburg 40530Sweden Laboratoire des Sciences du Climat et de l’Environnement UniversitéParis-SaclayGif-sur-Yvette 91191France Laboratoire de Météorologie dynamique Centre national de la recherche scientifiqueSorbonne UniversitéÉcole Normale SupérieureÉcole PolytechniqueParis 75000France Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control School of Environmental Science and EngineeringSouthern University of Science and TechnologyShenzhen 518055China

Sea surface temperature modes have been found to modulate anthropogenic global warming rates on annual and decadal timescales,sometimes leading to periods of“slowdown”despite increasing greenhouse gas emissions^([1]).

关键词：太平洋十年涛动地表气温 greenhouse