| 초록 |
In this study, we have synthesized six ruthenium sensitizers having different numbers of carboxylic (c-RuL3 with two, four, and six carboxylates, respectively) or phosphonic (p-RuL3 with two, four, and six phosphonates, respectively) linkage groups, anchored them onto TiO2 surface, and tested their visible light reactivity for hydrogen production and photoelectrochemical behaviors in water under the illumination of λ ＞ 420 nm. Photolysis experiments were performed using platinized TiO2 (P25 and Hombikat as a base catalyst) in the presence of EDTA as an electron donor. It was found that p-RuL3 with two phosphonate groups was the most efficient for hydrogen production. In general, sensitizers with the phosphonate groups were more active than the sensitizers with the carboxylate groups for hydrogen production. |
