121st General Meeting of the KCS

Type Poster Presentation
Area Electrochemistry
Room No. Event Hall
Time 4월 20일 (금요일) 11:00~12:30
Code ELEC.P-585
Subject Photocatalytic Multilayers Anode of Graphene Oxide and Terpyridine Ruthenium Complex for Efficient Water Splitting
Authors Dongseok Kim, Minsu Gu1, Byeong-Su Kim*
Department of Chemistry, Ulsan National Institute of Science and Technology, Korea
1Department of Energy Engineering, Ulsan National Institute of Science and Technology, Korea
Abstract Increasing demands of sustainable energy have prompted the search for the resources that are clean and renewable. Solar energy is particularly attractive due to its abundance and clean nature; thus, photoelectrochemical system is drawing considerable attention in solar energy conversion, photocatalysis, and water splitting. In the photoelectrochemical system, metal-ligand complexes play an important role. In particular, Ru-based complex has received a considerable attention as a next-generation photosensitizer and photocatalyst with its outstanding optical property and photocatalytic activity. However, its limited photocurrent density due to the limited photo-induced electrons within a photoelectrode has been posed a significant challenge in the field. In this study, we fabricated a multilayered thin film photoanode composed of Ru complex and nanosized graphene oxide (nGO) using layer-by-layer (LbL) assembly. The terpyridine complexed Ru (TPY2Ru) was incorporated for high density of photo-induced electron, while nGO could provide an efficient electron transfer pathway. We found that the multilayered TPY2Ru and nGO resulted in synergistic effect for efficient water splitting with a high photocurrent density (~1.41 μA/cm2) under ambient condition. We anticipate that this novel strategy for designing and assembling efficient photoanode can offer new insights for photocatalytic devices for clean energy sources.
E-mail rlaehdtjr38@gmail.com