|About this Abstract
||Materials Science & Technology 2019
||Controlled Synthesis, Processing, and Applications of Structural and Functional Nanomaterials
||Defect Effects on the Enhanced Photocatalytic Properties of 2D MoO3 Nanoflakes
||Haitao Zhang, Soheil Razmyar
|On-Site Speaker (Planned)
Two-dimensional (2D) MoO3 nanostructures were produced by using a scalable liquid exfoliation method with different alcohol-water solutions. The resulting nanoflakes have different dimensions and defect structures tailorable by the mixing ratio of the solutions, as shown by the materials structure characterization and optical property measurement. Combined with the photothermal study, the detailed reaction mechanism for the low-temperature protonation was revealed. Sub-bandgap defects provide the visible light absorption to initialize the reaction under the visible light irradiation. The usually slow reaction is expedited by the photothermal heating to achieve evident reaction rate without providing any additional heating. The low-temperature reaction has a great potential to produce substoichiometric semiconductors with tunable plasmonic behaviors at low cost. The reaction mechanism can be extended to a variety of photocatalytic processes of MoO3 nanostructures, with enhanced efficiencies to harvest and convert solar energy into chemical energies.
||Definite: At-meeting proceedings