One-Pot Ethyl Acetate Production from Ethanol Photooxidation on Rutile TiO2(110): Strong Photon Energy Dependence

Sun, Rulin1; Liu, Xinlu1; Chen, Xiao2,3; Che, Li1; Yang, Xueming2,3,4; Guo, Qing2,3

2022

10.1021/acs.jpclett.2c00048

Journal of Physical Chemistry Letters   影响因子和分区

1948-7185

Ethyl acetate (EA) production from sequential ethanol (EtOH) photooxidation on a rutile(R)-TiO2(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 (CH3CHO) 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-TiO2(110) is strongly dependent on photon energy or the energy of hot holes. This experimental result raises doubt about the traditional photocatalysis model on TiO2 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 TiO2 photocatalysis.

SCI ; EI

英语

NI论文

通讯

National Key R&D Program of China[2018YFE0203002] ; National Natural Science Foundation of China[22173041] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDB17000000] ; Shenzhen Science and Technology Innovation Committee["JCYJ2019080914021660","ZDSYS20200421111001787"] ; Guangdong Innovative & Entrepreneurial Research Team Program["2019ZT08L455","2019JC01X091"] ; International Partnership Program of Chinese Academy of Science[121421KYSB20170012]

Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics

Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Atomic, Molecular & Chemical

WOS:000745932700001

AMER CHEMICAL SOC

20220611590487

Charge transfer ; Oxide minerals ; Photocatalysis ; Photons ; Photooxidation ; Temperature programmed desorption ; Titanium dioxide

Minerals:482.2 ; Light/Optics:741.1 ; Chemical Reactions:802.2 ; Chemical Operations:802.3 ; Organic Compounds:804.1 ; Inorganic Compounds:804.2 ; Atomic and Molecular Physics:931.3

Web of Science

1.Dalian Maritime Univ, Coll Environm Sci & Engn, Dalian 116026, Liaoning, Peoples R China
2.Southern Univ Sci & Technol, Shenzhen Key Lab Energy Chem, Shenzhen 518055, Guangdong, Peoples R China
3.Southern Univ Sci & Technol, Dept Chem, Shenzhen 518055, Guangdong, Peoples R China
4.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Liaoning, Peoples R China

Sun, Rulin,Liu, Xinlu,Chen, Xiao,et al. One-Pot Ethyl Acetate Production from Ethanol Photooxidation on Rutile TiO2(110): Strong Photon Energy Dependence[J]. Journal of Physical Chemistry Letters,2022,13(3):801-807.

Sun, Rulin,Liu, Xinlu,Chen, Xiao,Che, Li,Yang, Xueming,&Guo, Qing.(2022).One-Pot Ethyl Acetate Production from Ethanol Photooxidation on Rutile TiO2(110): Strong Photon Energy Dependence.Journal of Physical Chemistry Letters,13(3),801-807.

Sun, Rulin,et al."One-Pot Ethyl Acetate Production from Ethanol Photooxidation on Rutile TiO2(110): Strong Photon Energy Dependence".Journal of Physical Chemistry Letters 13.3(2022):801-807.