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A study of highly activated hydrogen evolution reaction performance in acidic media by 2D heterostructure of N and S doped graphene on MoO_(x)

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Carbon Energy 2023年第11期5卷 68-80页

作者： Kubra Aydin Seongwon Woo vinit Kaluram Kanade Seulgi Choi Chisung Ahn Byungkwon Lim Taesung Kim SKKU Advanced Institute of Nanotechnology(SAINT) Department of Nano Science and TechnologySungkyunkwan UniversitySuwon‐siGyeonggi‐doRepublic of Korea School of Advanced material Science and Engineering Department of Nano Science and TechnologySungkyunkwan UniversitySuwonGyeonggi‐doRepublic of Korea School of Mechanical Engineering Sungkyunkwan UniversitySuwon‐siGyeonggi‐doRepublic of Korea Heat&Surface Technology R&D Department Korea Institute of Industrial TechnologySiheung‐siGyeonggi‐doRepublic of Korea

Herein,a layer of molybdenum oxide(MoO_(x)),a transition metal oxide(TMO),which has outstanding catalytic properties in combination with a carbonbased thin film,is modified to improve the hydrogen production performance and protect the MoO_(x)in acidic media.A thin film of graphene is transferred onto the MoO_(x)layer,after which the graphene structure is doped with N and S atoms at room temperature using a plasma doping method to modify the electronic structure and intrinsic properties of the *** oxygen functional groups in graphene increase the interfacial interactions and electrical contacts between graphene and MoO_(x).The appearance of surface defects such as oxygen vacancies can result in vacancies in MoO_(x).This improves the electrical conductivity and electrochemically accessible surface *** the number of defects in graphene by adding dopants can significantly affect the chemical reaction at the interfaces and improve the electrochemical *** defects in graphene play a crucial role in the adsorption of H^(+)ions on the graphene surface and their transport to the MoO_(x)layer *** enables MoO_(x)to participate in the reaction with the doped graphene.N^(‐)and S^(‐)doped graphene(NSgr)on MoO_(x)is active in acidic media and performs well in terms of hydrogen *** initial overpotential value of 359 mV for the current density of−10 ma/cm^(2)is lowered to 228 mV after activation.

关键词： heteroatom‐doped graphene hydrogen evolution reactions metal‐free catalysts transition metal oxides van der Waals(vdWs)heterostructures

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The joint automated repository for various integrated simulations (JARVIS) for data-driven materials design

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npj Computational materials 2020年第1期6卷 234-246页

作者： Kamal Choudhary Kevin F.garrity Andrew C.E.Reid Brian DeCost Adam J.Biacchi Angela R.Hight Walker Zachary Trautt Jason Hattrick-Simpers A.gilad Kusne Andrea Centrone Albert Davydov Jie Jiang Ruth Pachter gowoon Cheon Evan Reed Ankit Agrawal Xiaofeng Qian vinit sha.ma.houlong zhua.g Sergei V.Kalinin Bobby g.Sumpter ghanshyam Pilania Pinar Acar Subhasish mandal Kristjan Haule David Vanderbilt Karin Rabe Francesca Tavazza materials Measurement Laboratory National Institute of Standards and TechnologyGaithersburgMD 20899USA Theiss Research La JollaCA 92037USA Department of Chemistry and Biochemistry University of MarylandCollege ParkMD 20742USA Physical Measurement Laboratory National Institute of Standards and TechnologyGaithersburgMD 20899USA materials and manufacturing Directorate Air Force Research LaboratoryWright–Patterson Air Force BaseDaytonOH 45433USA Department of materials Science and Engineering Stanford UniversityStanfordCA 94305USA Department of Electrical and Computer Engineering Northwestern UniversityEvanstonIL 60208USA Department of materials Science and Engineering Texas A&M UniversityTexasTX 77843USA Joint Institute for Computational Sciences University of TennesseeKnoxvilleTN 37996USA National Institute for Computational Sciences Oak Ridge National LaboratoryOak RidgeTN 37831USA School for Engineering of matter Transport and Energy Arizona State UniversityTempeAZ 85287USA Center for Nanophase materials Sciences Oak Ridge National LaboratoryOak RidgeTN 37831USA materials Science and Technology Division Los Alamos National LabLos AlamosNM 87545USA Department of Mechanical Engineering Virginia TechBlacksburgVA 24061USA Department of Physics and Astronomy Rutgers UniversityPiscatawayNJ 08901USA

The Joint Automated Repository for Various Integrated Simulations(JARVIS)is an integrated infrastructure to accelerate materials discovery and design using density functional theory(DFT),classical force-fields(FF),and machine learning(ML)*** is motivated by the materials genome Initiative(MgI)principles of developing open-access databases and tools to reduce the cost and development time of materials discovery,optimization,and deployment.

关键词： automated JAR databases

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Imaging guided percutaneous interventions in hepatic dome lesions:Tips and tricks

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World Journal of Hepatology 2017年第19期9卷 840-849页

作者： Avinash Kambadakone vinit Baliyan Hamed Kordbacheh Raul N Uppot Ashraf Thabet Debra A gervais Ronald S Arellano Harvard Medical School Abdominal Imaging and Interventional RadiologyMassachusetts General HospitalBostonMA 02114United States

Percutaneous hepatic interventions are generally safe given the fact that liver closely abuts the abdominal wall and hence it is easily accessible. However, the superior portion of liver, adjacent to the diaphragm, commonly referred as the "hepatic dome", presents unique challenges for interventionists. Percutaneous access to the hepatic dome may be restricted by anatomical factors and special considerations may be required to avoid injury to the surrounding organs. The purpose of this review article is to discuss certain specific maneuvers and techniques that can enhance the success and safety of interventions in the hepatic dome.

关键词： Hepatic dome Radiofrequency ablation Hepatocellular carcinoma Percutaneous intervention

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