121st General Meeting of the KCS

Type Poster Presentation
Area Material Chemistry
Room No. Event Hall
Time 4월 20일 (금요일) 11:00~12:30
Code MAT.P-318
Subject Understanding the Roles of Reduced Graphene Oxide, RuO2, and MoS2 Nanosheets in Visible Light-Active Hybrid-type Photocatalysts
Authors SUJI SON, Seong-Ju Hwang*
Center for Hybrid Interfacial Chemical Structure (CICS), Department of Chemistry and Nanoscience, Ewha Womans University, Korea
Abstract Highly anisotropic 2D nanosheets of inorganic solids attract a great deal of research activity because of their unique merits as useful precursors for exploring novel efficient photocatalysts with energy and environmental applicabilities. Several conductive 2D nanosheets like reduced graphene oxide (rGO), RuO2, and MoS2 can be used as efficient hybridization matrices to improve the photocatalytic activity of semiconductor nanocrystal. In the hybrid photocatalyst systems, these conductive nanosheets are known to act as cocatalysts, electron reservoirs, electron pathways, and photosensitizers. To understand the critical factors governing the roles of these nanosheets, we synthesized several nanohybrids of CdS nanoparticles with rGO, RuO2, and MoS2 nanosheets. According to systematic characterization for the obtained nanohybrids, we can evaluate the relative efficacy of these nanosheets for the role of cocatalyst, electron reservoir, electron pathway, and photosensitizer and also for the improvement of the photocatalytic activity of semiconductor. Based on these results, a purpose-oriented synthetic strategy using appropriate conductive nanosheet is proposed for high performance semiconductor photocatalysts.
E-mail suji7790@naver.com