主讲人：贾艳敏 西安邮电大学教授

时间：2022年9月11日10：00

地点：腾讯会议 886 535 004

举办单位：数理学院

主讲人介绍：贾艳敏，西安邮电大学理学院材料物理系三级教授、博士生导师、陕西省QianRen计划创新长期引进人才。目前主要从事铁电材料荧光及催化研究。1999-2003郑州大学学士，2003-2008中科院上海硅酸盐所博士（2005-2006香港理工大学应用物理系联培），2008-2010荷兰代尔夫特理工大学博士后，2010年回国任特聘教授至今。第一/通讯作者在Nat. Commun. (2篇)、Energy Environ. Sci.、Adv. Mater.、Angew. Chem. Int. Ed.、Nano Energy（6篇)、Appl. Phys. Lett. (10篇).、J. Appl. Phys. (5篇)、《科学通报》、《物理学报》等发表论文100余篇。被引用3800余次。四篇ESI前1%高被引和一篇ESI前1‰热点论文，《物理学报》高被引论文作者。主持国家自然科学基金面上及青年项目、陕西省重点研发计划、陕西省自然基金、浙江省钱江人才计划等。获2018中国科技新锐人物突出贡献奖。担任中国电子材料与元器件产学研平台理事兼副秘书长等职务。

内容介绍：Ferroelectricity is a characteristic of certain materials that have a spontaneous electric polarization. Firstly, I will introduce my work related on luminescence of rare-earth doped ferroelectric materials. Based on the strong correlation between luminescence performance and crystal symmetry, these materials are designed for non-contact luminescent monitoring the ferroelectric polarization, compositional change, phase boundary, Curie transition, temperature, stress (Mechano-luminescence) and so on. Secondly, I will show my recent work related on some novel catalytic design such as piezo-catalysis, pyro-catalysis and tribo-catalysis of ferroelectric materials. In a typical photocatalytic process, the photo-induced electron–hole pairs can be used to drive chemical catalysis reaction (e. g. Degradation of dye wastewater or to hydrogen evolution from the splitting of water). All ferroelectrics are pyroelectric and all pyroelectrics are piezoelectric. Ferroelectric materials possess the ability to convert vibration energy or cold-hot alternation thermal-energy into electric energy. Some novel catalysis (piezo-catalysis, pyro-catalysis, tribo-catalysis) has been designed and realized on basis of the piezoelectric effect, pyroelectric effect, and triboelectric effect of ferroelectric materials, which is potential for application in dye wastewater degradation, water splitting into hydrogen, N2 fixation and CO2 reduction through harvesting the environmental vibration energy, room-temperature cold-hot fluctuation thermal-energy, or mechanical friction energy.