Kenichi Honda (本多健一, August 23, 1925 – February 26, 2011) was a Japanese chemist. He made a significant contribution to the discovery and characterization of photocatalytic properties of titanium dioxide (TiO2), for which he shared the 2004 Japan Prize with his former student Akira Fujishima.
Source: “Kenichi Honda”, English Wikipedia (CC BY-SA 4.0), excerpt