Hydrogen evolution sensitized by tin-porphyrin in microheterogeneous systems

A novel, photoinduced hydrogen evolution system involving tin-porphyrin was studied in three microheterogeneous systems namely nonionic, anionic and cationic. It was found that by using nonionic surfactant the system could reduce water to evolve hydrogen efficiently compared to the ionic surfactant system. It was also confirmed that hydrogen evolution in the micelle system depended strongly on the type of micelle used; a possible mechanism for this phenomenon is suggested. (C) 2002 Elsevier Science Ltd. All rights reserved.