(2月27日)Development of artificial photosynthetic assemblies using semiconductors, nanoparticles, and metal complexes
新闻类型:学术活动  阅读次数:  发布时间:2018-01-29

报告题目:Development of artificial photosynthetic assemblies using semiconductors, nanoparticles, and metal complexes

人:Prof. Kazuhiko Maeda (前田和彦, 东京工业大学)

报告时间:2018227(星期二) 上午10:30-12:00

报告地点:福州大学阳光科技大厦中401

报告摘要

Water splitting and CO2 fixation on semiconductor photocatalysts are importance reactions from the viewpoint of solar-to-fuel energy conversion to realize “artificial photosynthesis”.1–3 To achieve these reactions, it is important to improve both bulk and surface properties of a photocatalyst so as to suppress electron–hole recombination and promote surface redox catalysis. In this presentation, recent progress on the development of new photocatalysts that are active for such artificial photosynthetic reactions will be given. In particular, surface modification techniques developed by our group to construct active sites and light-absorbing centers using nanoparticles and metal complexes will be presented.

For example, we developed a new powdered photocatalyst consisting of Co(OH)2 and TiO2  (Figure 1).4 It is well known that TiO2 is an active photocatalyst, but only works under UV irradiation. By contrast, the Co(OH)2/TiO2 hybrid photocatalyst is capable of absorbing visible light with wavelengths of up to 850 nm and oxidizing water into oxygen gas, even though it consists of only earth-abundant elements only. To our knowledge, this system provides the first demonstration of a photocatalytic material capable of water oxidation upon excitation by visible light up to such a long wavelength.

1)Maeda, K.; Domen, K. Bull. Chem. Soc. Jpn. 2016, 89, 627.

2)Kuriki, R.; Maeda, K. Phys. Chem. Chem. Phys. 2017, 19, 4938.

3)Maeda, K. Progress in Solid State Chem. 2018, in press. DOI: 10.1016/ j.progsolidstchem.2017.11.003.

4)Maeda, K.; Ishimaki, K.; Tokunaga, Y.; Lu, D.; Eguchi, M. Angew. Chem., Int. Ed. 2016, 55, 8309.


报告人简介

Kazuhiko Maeda, 2007年博士毕业于东京大学,师从Kazunari Domen教授。2008-2009年在美国宾夕法尼亚州立大学从事博士后研究(合作导师:Thomas E. Mallouk教授),2009年加入东京大学任助理教授,2012年加入东京工业大学任副教授。2010-2014年期间任命为PRESTO/JST研究员,主要的研究兴趣是光能到化学能转化的多相光催化研究,特别是光解水和二氧化碳固定。

Email: maedak@chem.titech.ac.jp

 

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