应实验室Lionel Vayssieres教授邀请，巴西ABC联邦大学Aryane Toffanello博士来实验室进行为期8个月的研究访问。她将于6月10日（下周一）下午3点在能动学院北二楼11楼会议室举行学术讲座，介绍她此次来访的科研项目，请实验室师生积极参加学习交流。

讲座时间：2019年6月10日，下午3点

讲座地点：北二楼11楼会议室

讲座人：

Aryane Tofanello

Ph.D. in Nanoscience and Advanced Materials, Federal University of ABC (UFABC), Brazil

Postdoctoral Researcher, International Research Center for Renewable Energy (IRCRE)

Period: June 2019 - January 2020

E-mail: aryane.tofanello@yahoo.com

Aryane Tofanello received her bachelor degree in Biological Physical at Paulista State University (UNESP) in 2009 and her master degree in Biophisics at the same University in 2011.  She received her Ph.D. in Nanoscience and Advanced Materials from the Federal University of ABC (UFABC) in 2015, where continued her postdoctoral. 

Currently she is post-doctoral visiting at International Research Center for Renewable Energy. Her research is focused on synthesis and characterization of hematite films decorated with plasmonic nanoparticles for water splitting applications. Nowadays her research interests include the investigation of charge generation and separation processes at solid semiconductor / liquid electrolyte interfaces. Her research visit has been supported by the São Paulo Research Foundation (FAPESP) to join at IRCRE for 8 months.

讲座题目：

Gold Nanoparticle Decorated Fe2O3 Photoelectrodes: Understanding their Limitations and Challenges for an Improvement of Photoelectrochemical Efficiency

讲座摘要：

Hematite photoelectrodes combined with metallic nanoparticles has been extensively explored to produce hydrogen via photoelectrochemical process. Although some advances were achieved, unfavorable effect of metallic nanostructures on the photochemical response have been observed. In this sense, the present work related to the presence of gold nanoparticle (AuNP) on hematite surface and its implication in the overall photocatalytic mechanism. In order to elucidate some mistaken plasmonic phenomena, a series of photoelectrodes synthesized using microwave conditions and decorated with AuNPs from 3 to 10 nm in diameter by dip coating were proposed. The analyses showed the formation of hydrated gold phase (Au(OH)3) when the photoelectrodes were in contact with electrolyte (reaction medium saturated of OH- species) and were irradiated, which is a limiting factor in photoelectrochemical applications.