报告题目：Nanostructured Metal Oxides for Photocatalysis and Luminescence

报告人：毛园冰副教授

报告时间：2019年5月29日上午10:00-11:00

报告地点：华工大学城校区B4-308会议室

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报告摘要：

Scaling metal oxides to nanoscale dimensions substantially alters their phase stabilities and interfacial activities with tremendous consequences for the manifestation of unique physical phenomena. Developing novel nanostructured metal oxides and understanding their synthesis-property-application relationship have paramount importance to meet the materials needs and challenges of our evolving and expanding society. In this seminar, I will give an overview of the research of my group in two areas, i.e. photocatalysis for energy conversion and environmental remediation, and luminescence. For photocatalytic energy conversion, we have explored a branching strategy to enhance electric and optical properties of ZnO nanostructures and p-type delafossites with Cu^IM^IIIO₂ composition as active electrode materials for (photo)electrical water splitting. For environmental remediation, we developed a facile coating method for TiO₂ particles with a thin organic layer to increase their photocatalytic water purification efficiency of both cationic and anionic contaminants. Regarding luminescent nanomaterials useful for solid-state lighting, X-ray scintillators, thermometry, and bioimaging, we focus on pyrochlore A^III₂M^IV₂O₇ and spinel AM₂O₄ nanoparticles. We have achieved substantial tunability of their particle size, crystal phase, and more importantly, luminescence properties. We have gained clear understanding of the influences of the synthesis conditions, particle morphology and composition on their photoluminescence and radioluminescence. In sum, these exemplary functional metal oxide nanomaterials offer bright promise of producing innovative advances across multiple technologies, and thus will continue impacting our lives in substantial ways.

报告人简介：

Dr. Yuanbing Mao is an Associate Professor and the Carlos & Stephanie Manrique de Lara Endowed Professor at the University of Texas Rio Grande Valley (UTRGV). He holds a joint appointment with the Department of Chemistry and the School of Earth, Environmental, and Marine Science. Dr. Mao is a graduate of Xiangtan University (B.Sc.), Institute of Chemistry, Chinese Academy of Sciences (M.Sc.), and the State University of New York at Stony Brook (Ph.D.). He was a postdoctoral fellow at the University of California at Los Angeles. Prior to starting his independent career, he also worked as a Research Scientist at Washington State University. In the past nine years, he earned the Young Investigator award from the U.S. Department of Defense in 2010, the College Faculty Excellence Award in Research at the College of Sciences at UTRGV in 2017, and the University Faculty Excellence Award in Research at UTRGV in 2018. He has received several million-dollar research grants from various funding agencies, including ACS PRF, AFOSR, DTRA, DARPA, NSF, USDA, and Bill & Melinda Gates Foundation. He was a recipient of the DOE Visiting Faculty Program consecutively for summers 2013-2015. As of today, he has published over 80 peer-reviewed journal articles with an h-index > 40, 3 book chapters, and a few patents. His research interests are focused on solid-state chemistry, materials science, and nanotechnology with expertise on optoelectronics, energy storage and conversion and environmental remediation. Further details about Dr. Mao can be seen at his homepage: http://www.utrgv.edu/mao/.