（最新消息）新学期开学前夕——2019年2月25日，下午15:00，7321com必赢举行了一场校外专家讲座，华北电力大学潘家鸿教授接受邀请，来我院做了一场精彩生动的学术报告。

潘家鸿教授，化学博士，毕业于韩国仁荷大学，硕士毕业于厦门大学。曾有过四段八年博士后经历的他，先后在南洋理工大学、新加坡国立大学、汉诺威莱布尼茨大学工作，并重回新加坡国立大学两度进站攻读博后。现工作于华北电力大学从事环境光催化、自组装纳米结构、钙钛矿太阳能电池等方面的研究。

此次报告摘要如下：

Owning to their monodisperse nature, structural diversity at nano- and microscale, 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, mass production 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, synthetic technique 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 achieve size-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, mesoscopic solar cells will be discussed.