报告题目：Nanoporous TiO₂-based Spheres with Tunable Size, Phase, and Interior for Photoelectrochemical Applications

 

报告人：华北电力大学 潘家鸿 教授

报告时间：2019年2月25日（周一）下午15:00

报告地点：江南平台江南登录平台,Welcome逸夫科学楼A208

 

报告摘要：

Owning to their monodisperse nature, structural diversity atnano-andmicroscale, excellent structural stability, large surface area, and close-packing capability, mesoporous anatase TiO₂ spheres (MAS) have attracted increasing interest for photoelectrochemical applications. Traditional template and template-free (e.g. hydro/solvothermal) methods have been developed for the preparation of MAS with solid or hollow inner structure; however, massproduction and textural property control have not well realized. Thanks to the colloidal science, monodisperse, amorphorse hydrous TiO₂ spheres (HTS) derived from the forced hydrolysis of titanium alkoxides has been recently employed as a versatile self-template for the controllable synthesis of mesoporous TiO₂ spheres consisting of well-organized anatase nanocrystallites and possessing hierarchical structures and large surface area.

In this talk, synthetictechnique and the underlying formation mechanism of HTS will be first introduced. The key parameters, such as water dosage and the type of the structure-directing agents, are discussed to achievesize-controllable synthesis. Phase and structural transformation from HTS to solid/hollow MTS and perovskite titanates by posttreatments such as hydro/solvothermal proces or UV irradiation are then addressed. Photoelectrochemical applications of these elaborated mesoporous TiO₂-based spheres in the fields of environmental photocatalysis, mesoscopicsolarcells will be discussed.

Figure 1. Self-assembly formation and structural properties of HTS derived from sol-gel process.

 

报告人简历：

潘家鸿 华北电力大学 教授

Education

Ph.D. in Inorganic Chemistry (2004.8–2007.7); Advisor: Prof. Wan In Lee

Dept. of Chem., Inha University, Incheon, South Korea

Dissertation: Preparation of Mesoporous Metal Oxide Films for Photoelectrochemical Applications

M.Sc. in Inorganic Chemistry (2001.8–2004.7), Dept. of Chem., Xiamen University, China

B.Eng in Environmental Engineering (1996.9–2000.7), Dept. of Appl. Chem., University of China

Postdoctoral Training

2011.4–2015.7 Dept. of Materials Science & Eng., National University of Singapore, Singapore

2012.8–2013.7 Institut für Technische Chemie, Leibniz University of Hannover, Hannover, Germany

2009.8–2011.3 Dept. of Chemical & Biomolecular Eng., National University of Singapore, Singapore

2007.8–2009.8 Sch. of Civil & Environmental Eng., Nanyang Technological University, Singapore

Current Position

Professor, School of Renewable Energy, North China Electric Power University, China (2015.10-now)

ACADEMIC SERVICES

Editor: Frontiers in Chemistry

Guest Editor: Catalysis Today, Int. J. Photoenergy

PROFESSIONAL AFFILIATIONS

Chinese Society of Particuology; Chinese Chemical Society;

Materials Research Society; Korean Chemical Society

Awards and Honors

Lee Foundation Conference Travel Grant, Singapore (2014)

Best Poster Award, 4 th International Conference of Semiconductor Photochemistry (2013)

Alexander von Humboldt (AvH) Research Fellowship, AvH Foundation, Germany (2011)

Institution of Engineers Singapore (IES) Prestigious Engineering Achievement Award 2008 (2008)

2006 Chinese Government Award for Outstanding Self-Financed Students Abroad (2007)

Research Interest

Environmental photocatalysis, self-assembled nanostructure, perovskite solar cell