AVS 62nd International Symposium & Exhibition
    Surface Science Wednesday Sessions
       Session SS+AS+NS-WeM

Paper SS+AS+NS-WeM1
Surface Chemistry of Single-Layer MoS2

Wednesday, October 21, 2015, 8:00 am, Room 113

Session: Metals, Alloys & Oxides: Reactivity and Catalysis
Presenter: Koichi Yamaguchi, University of California - Riverside
Authors: K. Yamaguchi, University of California - Riverside
E. Li, University of California - Riverside
L. Bartels, University of California - Riverside
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Molybdenum disulfide (MoS2) is a semiconducting transition metal dichalcogenide (TMD) that forms a stable monolayer 2D crystal structure similar to graphene. It is the key material for industrial hydrodesulfurization (alloyed with cobalt) and has shown promise in electrocatalytic water splitting. We present a study of MoS2’s ability to bind small reactants and its stability when exposed to them at elevated temperature. We utilize a combination of thermally programmed desorption measurements and in-situ PL imaging. The latter permits us to study the film activity over a wide pressure range (high-vacuum to ambient).