AN IN SITU FT-IR STUDY ON PHOTOCATALYTIC REACTION AT SEMICONDUCTOR-AQUEOUS SOLUTION INTERFACE - MECHANISM OF PHOTOCATALYTIC N-CYCLIZATION OF (S)-LYSINE

摘要

Photoinduced reaction occurring at an aqueous solution-semiconductor interface was analyzed in situ by reflection FT-IR spectroscopy. The photoinduced reflection spectral change, Delta R (= (R-R(0))/R(0)), was recorded by using an IR cell consisting of a semiconductor (TiO2 or CdS) thin film electrode, a thin layer of aqueous (S)-lysine solution, and a calcium fluoride window. Structure of adsorbed substrate and mechanism of photoinduced reaction were discussed. [References: 12]