关于举行苏州大学张桥教授和何乐教授学术报告会的通知

发布时间:2019-08-01设置

报告题目:Controllable Synthesis of CsPbX3 Perovskite Nanocrystals and Strategies for Stability Enhancement
报 告 人:张桥 教授 (苏州大学 功能纳米与软物质研究院)
报告题目:新颖微纳结构高效光催化二氧化碳还原
报 告 人:何乐 教授 (苏州大学 功能纳米与软物质研究院)
报告时间:2019年8月5日(星期一) 下午14:30-17:30
报告地点:北区科技园1号楼发光国家重点实验室 402
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材料科学与工程学院
2019年7月31日
1.报告人简介(张桥教授):
Professor Qiao Zhang received his B.S. and M.S. from University of Science and Technology of China (under the supervision of Prof. Shuhong Yu). He got his Ph.D. in the Department of Chemistry (with Prof. Yadong Yin), University of California Riverside. After being a Postdoctoral Fellow in the Department of Chemistry, University of California Berkeley with Prof. A. Paul Alivisatos and Prof. Gabor A. Somorjai, he joined Soochow University as a professor in 2014. He is currently the Director of International Office of Soochow University. His main research field is rational design and synthesis of various nanomaterials for heterogeneous catalysis and optoelectronics. He has published more than 100 papers in peer-reviewed journals. His papers have been cited by about 8500 times with an H-index of 46. He has won some awards, including Highly Cited Researchers (Clarivate Analytics, 2018), Innovative & Entrepreneurial Talent of Jiangsu (2017), 1000 Youth Talents (2014), IUPAC Prizes for Young Chemists (2013), and so on.
 
报告摘要:
All-inorganic cesium lead halide (CsPbX3, X = Cl, Br, I) perovskite nanocrystals have been regarded as emerging materials in diverse fields due to their excellent photophysical properties. Recently, our group have developed some new synthetic strategies including solvothermal, microwave-assisted, post-treatment and room-temperature injection synthesis methods to prepare colloidal CsPbX3 perovskite nanocrystals. By the manipulation of reaction parameters (surface ligands, reaction kinetics…), CsPbX3 perovskite nanocrystals with controllable morphologies such as nanocube, nanowire, nanoplate, have been synthesized. In addition, the stabilities of such nanocrystals against water, polar solvent, heat and light treatment can be improved by surface engineering. Ligands (trioctylphosphine oxide, 1-octylphosphonic acid) and oxides (SiO2 and ZrO2) have been successfully demonstrated. We believe these work will shed some light not only on CsPbX3 nanocrystals synthesis and their nanocomposite design, but also on the stability and practical applications.
 
2.报告人简介(何乐教授):
苏州大学功能纳米与软物质研究院特聘教授。2008年于南京大学化学系获学士学位,2013年在美国加州大学河滨分校(University of California Riverside)获博士学位,2013年至2015年在多伦多大学(University of Toronto)从事博士后研究工作,2015年9月加入苏州大学工作。主要从事光功能微纳结构的组装、性能调控及应用探索的研究工作,在Acc. Chem. Res., Nat. Commun., Adv. Mater., Joule等杂志发表论文60余篇,论文已被SCI引用2400次,H因子28。获授权美国发明专利2项,申请国内专利5项。参与编写国际专著3部(章)。近年来获得的主要奖项包括:加拿大班廷奖学金、“国家优秀海外自费留学生奖学金”(2013年)、“美国材料学会(MRS)杰出研究生银奖”(2013年)等。
 
报告摘要:
利用太阳光和光催化剂将二氧化碳转化为碳氢燃料,实现太阳能向化学能的转化,不仅在清洁能源领域具有重要的意义,更对于减缓温室效应起到至关重要的作用。目前太阳能光催化还原二氧化碳的效率还比较低,尚不能达到产业应用的要求。因此,寻找高活性、高选择性和高稳定性的的光催化剂并构筑高效的催化体系依然是光催化还原二氧化碳领域的核心挑战。针对上述挑战,我们提出通过催化剂微纳结构设计提升光催化性能的策略。我们将从复杂微纳结构的可控制备出发,获得一系列具有新颖结构的功能纳米材料,系统研究其在光催化还原二氧化碳应用中的构效关系和机理,力争为催化剂的设计提出新的思路。例如,我们提出了表面曲率控制生长的通用方法,实现了在非球形种子表面位点选择性生长补丁材料。通过构筑纳米晶超结构,促进了半导体材料光生载流子的分离,提高了光生电子空穴对的寿命,进而增强了光催化活性。
 

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