One-Pot Ethyl Acetate Production from Ethanol Photooxidation on Rutile TiO2(110): Strong Photon Energy Dependence
Source abstract
Abstract
Ethyl acetate (EA) production from sequential ethanol (EtOH) photooxidation on a rutile(R)-TiO 2 (110) surface has been investigated by the temperature-programmed desorption (TPD) method at 355 and 266 nm. Significant EA product is detected under 266 nm irradiation, which is most likely to be formed via cross-coupling of primary dissociation products, aldehyde (CH 3 CHO) and ethoxy groups. On the contrary, EA formation at 355 nm is negligible. In addition, the initial rate of EA formation from EtOH at 266 nm is nearly 2 orders of magnitude faster than that at 355 nm. Quantitative analysis suggests that EA formation from sequential EtOH photooxidation on R-TiO 2 (110) is strongly dependent on photon energy or the energy of hot holes. This experimental result raises doubt about the traditional photocatalysis model on TiO 2 where charge carriers relax to their respective band edges prior to charge transfer to adsorbates during the photocatalytic process, leading to no dependence on photon energy in TiO 2 photocatalysis.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: TiO2 Photocatalysis and Solar Cells · Advanced Photocatalysis Techniques · Catalytic Processes in Materials Science
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
College of Environmental Sciences and Engineering, Dalian Maritime University, Dalian, Liaoning 116026, People’s Republic of China
Shenzhen Key Laboratory of Energy Chemistry, Southern University of Science and Technology, Shenzhen, Guangdong 518055, People’s Republic of China
Department of Chemistry, Southern University of Science and Technology, Shenzhen, Guangdong 518055, People’s Republic of China
State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, Liaoning 116023, People’s Republic of China
Funding
Ministry of Science and Technology of the People's Republic of China · Science, Technology and Innovation Commission of Shenzhen Municipality · National Natural Science Foundation of China · Chinese Academy of Sciences · Guangdong Innovative & Entrepreneurial Research Team Program
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