title: Nanostructured Graphene-Titanium Dioxide Composites Synthesized by a Single-Step Aerosol Process for Photoreduction of Carbon Dioxide.
abstract: Photocatalytic reduction of carbon dioxide (CO2) to hydrocarbons by using nanostructured materials activated by solar energy is a promising approach to recycling CO2as a fuel feedstock. CO2photoreduction, however, suffers from low efficiency mainly due to the inherent drawback of fast electron-hole recombination in photocatalysts. This work reports the synthesis of nanostructured composites of titania (TiO2) nanoparticles (NPs) encapsulated by reduced graphene oxide (rGO) nanosheets via an aerosol approach. The role of synthesis temperature and TiO2/GO ratio in CO2photoreduction was investigated. As-prepared nanocomposites demonstrated enhanced CO2conversion performance as compared with that of pristine TiO2NPs due to the strong electron trapping capability of the rGO nanosheets.
authors: Department of Energy, Environmental, and Chemical Engineering, Washington University in St. Louis , St. Louis, Missouri.
authors: Wei-Ning
authors: WN
authors: Wang
authors: Department of Energy, Environmental, and Chemical Engineering, Washington University in St. Louis , St. Louis, Missouri.
authors: Yi
authors: Y
authors: Jiang
authors: Department of Energy, Environmental, and Chemical Engineering, Washington University in St. Louis , St. Louis, Missouri.
authors: John D
authors: JD
authors: Fortner
authors: Department of Energy, Environmental, and Chemical Engineering, Washington University in St. Louis , St. Louis, Missouri.
authors: Pratim
authors: P
authors: Biswas
keywords: carbon neutrality; crumpling; photocatalysis; solar energy; spray pyrolysis