 He then worked as a lecturer (1965–1975) and professor (1975–1983) at the University of Tokyo and at Kyoto University (1983–1989).In 1989 he moved to the Tokyo Polytechnic University and served as its president in 1996–2004.In the late 1960s Honda and his doctorate student Akira Fujishima discovered the Honda-Fujishima effect - photocatalytic water decomposition (photolysis) upon exposing a titanium dioxide electrode to strong light.