We would like to invite you to the next Microscopy & Microanalysis seminar:
Title: In-situ observation of the dynamic behaviours of nanocatalysts by environmental TEM
Presenter: Professor Yong Wang, Center of Electron Microscopy and School of Materials Science and Engineering, Zhejiang University, Hangzhou, China
Date/time: Wednesday 31st July, 3 to 4 pm
Venue: AIBN building #75, Level 1 Seminar Room
Abstract
The environment, such as temperature, gas and pressure, has a significant impact on the catalyst surfaces, which may result in structural and electronic changes including electron transfer and stress variation, making it challenging to accurately interpret the physical and chemical properties of nanocrystal catalysts. To address such an important issue, we introduce the environment into transmission electron microscope (TEM), which is supposed to work in high vacuum, to study the structural evolution and its impact on the physicochemical properties of nanocatalysts at the atomic scale under gas environment. In this talk, I will present our recent in-situ studies on nanocrystal catalysts under high temperature and/or gas environment (up to 105 Pa using gas-cell system) in TEM (see below references). The effect of the environment on nanocrystal catalysts will be discussed in detail.
References:
Angew. Chem. Int. Ed. (2019) DOI: 10.1002/anie.201906799; Angew. Chem. Int. Ed. 57 (2018) 16827-16831; Angew. Chem. Int. Ed. 57 (2018) 6464 –6469; Angew. Chem. Int. Ed. 57 (2018) 11344-11348; Chem. Mater. 30 (2018) 288–295; Chem. Comm. 54 (2018) 8587-8590; Nano Res. 11 (2018) 42–67; Chem. Mater. 29 (2017) 3189-3194; Chem. Comm. 53 (2017) 13213-13216; Nano Res. 10 (2017) 397-404; ACS Nano 10 (2016) 763-769; Nano Lett. 16 (2016) 132–137; Angew. Chem. Int. Ed. 55 (2016) 12427–12430
Dr Yong Wang is a professor at School of Materials Science and Engineering and the Director of Center of Electron Microscopy, Zhejiang University. He received his PhD from Institute of Physics, Chinese Academy of Sciences in 2006 under the supervision of Prof. Ze Zhang. From 2006 to 2012, he worked as a research fellow in Prof. Jin Zou’s group at University of Queensland, Australia and during 2010-2011, he worked in Prof. Kang L. Wang’s group at UCLA as a visiting scholar. In 2012, he joined Zhejiang University as a full professor.
He has published over 140 SCI articles, with three in Nature Nanotechnology, one in Nature Materials, and over 30 in JACS, Angew. Chem, Nano Lett., ACS Nano, Adv. Mater. and PRL. The total SCI citation is over 5000 times and the H index is 41. He received several prestigious awards, including 2008 Australian Postdoctoral Fellowship, 2010 UQ Foundation Research Excellence Award, 2012 National 1000 Young Talents of China and 2013 Qiushi Outstanding Young Scholar Award. He is also honorably appeared as one of the cover figures of ARC annual report (2011-2012) and strategic plan (2013-2014) of Australia.
His current research interest focuses on the sub-angstrom investigation of the structures and properties of environmental catalysts (metal nanoparticle/metal oxide) by in-situ environmental (heating, gas) TEM to explore new routes for improving materials properties and to obtain low-cost and high performance catalysts for protecting environment.
