Plasmon-induced charge separation (PICS) occurs at the interface between plasmonic nanostructures of gold, silver, or copper and a semiconductor (typically titanium oxide),1-3
on the basis of carrier transfer from the nanostructure to the semiconductor due to external photoelectric effects including hot carrier injection, or interfacial electron transition.4
We reported PICS for the first time more than 10 years ago1-3
and studied its mechanisms3-7
The applications of PICS include photocatalysis, in particular hydrogen evolution from water. We also work on photocatalytic hydrogen evolution based on PICS by using some different systems including gold nanoparticle/titanium oxide systems and gold halfshell/titanium oxide systems.10
1. Y. Tian and T. Tatsuma, J. Am. Chem. Soc., 127, 7632 (2005).
2. Y. Tian and T. Tatsuma, Chem. Commun., 2004, 1810.
3. T. Tatsuma, Bull. Chem. Soc. Jpn., 86, 1 (2013) [account].
4. E. Kazuma and T. Tatsuma, Adv. Mater. Interfaces, 1, 1400066 (2014).
5. E. Kazuma, N. Sakai, and T. Tatsuma, Chem. Commun., 47, 5777 (2011).
6. H. Nishi and T. Tatsuma, Angew. Chem. Int. Ed., 55, 10771 (2016).
7. K. Saito, I. Tanabe, and T. Tatsuma, J. Phys. Chem. Lett., 7, 4363 (2016).
8. Y. Ohko, T. Tatsuma, T. Fujii, K. Naoi, C. Niwa, Y. Kubota, and A. Fujishima, Nat. Mater., 2, 29 (2003).
9. Y. Takahashi and T. Tatsuma, Appl. Phys. Lett., 99, 182110 (2011).
10. L. Wu, H. Nishi, and T. Tatsuma, APL Mater., 3, 104406 (2015).