Abstract
Sonoluminescence (SL) and sonochemiluminescence (SCL) have been used to generate molecular hydrogen in a photocatalytic process using colloidal platinum, Ru(bipy)^<2+>_3 as a photosensitiser, and methyl viologen as an electron relay agent. SL and SCL and various radicals were generated in water using 355 kHz ultrasound. The efficiency of the photocatalytic hydrogen production was to some extent limited by sonochemical side reactions, however the in situ photon generation was sufficiently intense for relatively pronounced H2 generation above the background sonochemical processes.
