2018年10月24日贝尔格莱德大学Miroslav D. Dramićanin 学术报告

报告摘要：

Titanium dioxide is a wide band‐gap semiconductor of high chemical stability, nontoxicityand large refractive index. Because of the high photocatalytic activity, anatase is a preferred TiO2 form in many applications such as for air and water splitting and purification. Doping of TiO2 with various ions can increase the photocatalytic activity by enhancing light absorption in visible region and can alter structure, surface area and morphology. Also, by doping TiO2 with optically active ions, visible light via up‐ or downconversion luminescence can be produced. It is a challenge to optimize the synthesis procedure to incorporate rare earth RE3+ ions into the TiO2 structure due to large mismatch in ionic radii between the Ti4+ and RE3+ and because of the charge imbalance. Visible (VIS) and ultraviolet (UV) luminescence of several RE3+ ions can be obtained when incorporated into anatase TiO2, also affecting microstructural characteristics of TiO2. It is of great importance to summarize publications on rare earth‐doped anatase TiO2 nanoparticles to find correct TiO2-RE combination to sensitize trivalent rare earths luminescence, as well as to predict or tune structural and morphological properties. A better understanding on these topics may progress the desired design of this kind of material towards specific applications.

报告人简介：

Prof. Dr. Miroslav D. Dramićanin (born in Belgrade on 23rd July 1966) is the Head of Department for Radiation Chemistry and Physics, Vinča Institute and Full professor of Applied Physics, Faculty of Physics, University of Belgrade, Serbia. He is Distinguished foreign professor of the Physics and Materials Science and Engineering Subjects at the Chongqing University of Posts and Telecommunications (CQUPT), PR China and Adjunct senior scientist at the Houston Center for Biomaterials and Biomimetics, University of Texas at Houston, USA. He acts as an associate editor of the Optical Materials (Elsevier) and Member of the National Council for Physics of the Republic of Serbia. He is Chairperson of the International Conference on the Physics of Optical Materials and Devices (ICOM) – www.icomonline.org and Member of the Steering Committee of the Association of Italian and Serbian Scientists and Scholars - www.ais3.rs. Prof. Dramićanin has published 1 book, 5 book chapters, and 217 papers in international journals. According to Google scholar, his H-index is 31 and his papers are cited 4200 times.