Structure,magnetic and adsorption properties of novel FePt/h-BN heteromaterials  

作　　者：Anton S.Konopatsky Vladislava V.Kalinina Alena S.Savchenko Denis.V.Leybo Ekaterina V.Sukhanova Viktor S.Baidyshev Zakhar I.Popov Andrey V.Bondarev Josef Polčák Dmitry V.Shtansky 

机构地区：[1]National University of Science and Technology(MISIS),Leninskiy prospect 4,Moscow,119049,Russia [2]Emanuel Institute of Biochemical Physics RAS,Kosygina 4,Moscow,119334,Russia [3]Katanov Khakas State University,90 Lenin pr.,655017 Abakan,Russia [4]Plekhanov Russian University of Economics,36 Stremyanny per.,Moscow 117997,Russia [5]Department of Control Engineering,Faculty of Electrical Engineering,Czech Technical University in Prague,Technicka 2,Prague 16627,Czech Republic [6]CEITEC-Central European Institute of Technology,Brno University of Technology,Purkyňova 123,Brno 61200 Brno,Czech Republic

出　　处：《Nano Research》2023年第1期1473-1481,共9页纳米研究（英文版）

基　　金：The authors gratefully acknowledge the financial support from the Russian Science Foundation(No.20-79-10286)in the part of materials synthesis,characterization and study of magnetic properties and the Strategic Academic Leadership Program“Priority 2030”at NUST(MISiS)(strategic project:“Biomedical materials and bioengineering”)in the part of water treatment;A.V.B.acknowledges CzechNanoLab Research Infrastructure supported by MEYS CR(No.LM2018110)in the part of in situ XPS analysis;Z.I.P.grateful to the Joint Supercomputer Center of the Russian Academy of Sciences,the Information Technology Centre of Novosibirsk State University,and the Materials Modelling and Development Laboratory at NUST(MISIS)(supported via the grant from the Ministry of Education and Science of the Russian Federation)(No.14.Y26.31.0005)for providing access to the cluster computational resources.

摘　　要：Nanomaterials with high specific surface area and high absorption capacity are attracting increased interest aimed at imparting the desired magnetic properties.This work is devoted to the study of the effect of heat treatment in a hydrogen atmosphere on the microstructure,adsorption and magnetic properties of heterogeneous FePt/h-BN nanomaterials.Obtained via the polyol process,FePt nanoparticles(NPs)had a size<2 nm and were uniformly distributed over the surface of hexagonal boron nitride(h-BN)nanosheets.The temperature-activated fcc→fct phase transformation in ultrafine FePt NPs has been well documented.FePt NPs act as active centers dissociating H2 molecules and transfer adsorbed hydrogen atoms to the h-BN.Density functional theory(DFT)calculations also indicate that the h-BN substrate can absorb hydrogen adsorbed on the FePt NPs.This hydrogen circulation in the FePt/h-BN system promoted the fcc→fct phase transformation and allowed to control the magnetic properties.FePt/h-BN nanomaterials also exhibited a high adsorption capacity with respect to various organic dyes.

关 键 词：FePt/h-BN nanomaterials polyol synthesis phase transformations magnetic properties ADSORPTION 

分 类 号：TB383[一般工业技术—材料科学与工程]