AUTHOR=Cravanzola Sara , Cesano Federico , Gaziano Fulvio , Scarano Domenica TITLE=Carbon Domains on MoS2/TiO2 System via Catalytic Acetylene Oligomerization: Synthesis, Structure, and Surface Properties JOURNAL=Frontiers in Chemistry VOLUME=5 YEAR=2017 URL=https://www.frontiersin.org/journals/chemistry/articles/10.3389/fchem.2017.00091 DOI=10.3389/fchem.2017.00091 ISSN=2296-2646 ABSTRACT=
Carbon domains have been obtained at the surface of a MoS2/TiO2 (Evonik, P25) system via oligomerization and cyclotrimerization reactions involved in the interaction of the photoactive material with acetylene. Firstly, MoS2 nanosheets have been synthesized at the surface of TiO2, via sulfidation of a molybdenum oxide precursor with H2S (bottom-up method). Secondly, the morphology and the structure, the optical and the vibrational properties of the obtained materials, for each step of the synthesis procedure, have been investigated by microscopy and spectroscopy methods. In particular, transmission electron microscopy images provide a simple tool to highlight the effectiveness of the sulfidation process, thus showing 1L, 2L, and stacked MoS2 nanosheets anchored to the surface of TiO2 nanoparticles. Lastly,