主讲人简介：  

Hak YongKim  Ph.D., Professor  Chonbuk National University (CBNU)

Dr. Kim has completed his PhD from Textile Eng., Seoul National  University,Korea. He is professor at Department of BIN Fusion Technology  &Department of Organic Materials and Fiber at ChonbukNational University. He  has published more than 290 papers in reputed journals (h-index39) and has been  serving as an editorial board member of three internationaljournals  (Macromolecular Research, Fibers and Polymers, Korean Tissue Engineering and  RegenerativeMedicine Society). His research interests including: Biomaterials,  Polymercomposites, Inorganic materials, Carbon nanofibers, Functional materials  likeSemiconductor, Electrocatalytic, Phocatalytic materials, Hydrogen and  fuelcells.

报告摘要：

Novel luminescent and amorphousLa2O3-ZrO2: Eu3+ (LZE) nanofibrous membranes  with robust softnessare fabricated for the first time via a facile  electrospinning technique. Byemploying zirconium oxide incorporation, the  as-prepared lanthanum oxidenanofibrous membranes can be dramatically changed  from the extreme fragility torobust softness. Meanwhile, the softness and  luminescent performance of LZEnanofibrous membranes can be finely controlled by  regulating the dopingconcentration of zirconium oxide and europiumin lanthanum  oxidenanofibers. Additionally, the crystal structure analysis using  X-raydiffractometer and high resolution transmission electron  microscopymeasurements have confirmed the correlation between the amorphous  structure andsoftness. Furthermore, LZE membranes show the characteristic  emission of Eu3+corresponding to 5D0, 1, 2 - 7F0, 1, 2,3, 4 transitions due to  an efficient energy transfer from O2-to Eu3+. The LZE nanofibrous membranes with  the optimum doping Eu3+concentration of 3 mol%, the as-prepared LZE membranes  exhibit excellentsoftness and luminescent properties, which make the materials  have potentialapplications in fluorescent lamps and field emission  displays.