Oxygen Photochemistry on TiO2(110): Recyclable, Photoactive Oxygen Produced by Annealing Adsorbed O2

被引：35

作者：

Petrik, Nikolay G. ^{[1
]}

Kimmel, Greg A. ^{[1
]}

机构：

[1] Pacific NW Natl Lab, Chem & Mat Sci Div, Richland, WA 99352 USA

来源：

JOURNAL OF PHYSICAL CHEMISTRY LETTERS | 2011年 / 2卷 / 21期

关键词：

REDUCED RUTILE TIO2(110); MOLECULAR-OXYGEN; SURFACE-CHEMISTRY; TIO2; PHOTOCATALYSIS; CO OXIDATION; PHOTOOXIDATION; DISSOCIATION; CHEMISORPTION; TITANIA; PHOTODESORPTION;

D O I：

10.1021/jz201225c

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The photochemistry of oxygen adsorbed on TiO2(110) at 30 K and annealed up to 600 K is investigated. UV irradiation results in exchange of atoms between chemisorbed and physisorbed oxygen. Annealing chemisorbed oxygen to 350 K maximizes these exchange reactions, while such reactions are not observed for oxygen that is dissociatively adsorbed on TiO2(110) at 300 K For oxygen annealed to 350 K, the exchange products photodesorb in the plane perpendicular to the bridge-bonded oxygen rows at an angle of 45 degrees. In contrast, chemisorbed O-2 photodesorbs normal to the surface. Remarkably, the chemisorbed species is stable under multiple cycles of UV irradiation. Atoms in the chemisorbed species can be changed from O-18 to O-16 and then back to O-18 via the exchange reactions. The results show that annealing oxygen on TiO2(110) to similar to 350 K produces a stable chemical species with novel photochemical properties. Possible forms for the photoactive species include O-2 adsorbed in a bridging oxygen vacancy or tetraoxygen.

引用

页码：2790 / 2796

页数：7

共 50 条

[41] KPFM/AFM imaging on TiO2(110) surface in O2 gas
Arima, Eiji
Wen, Huan Fei
Naitoh, Yoshitaka
Li, Yan Jun
Sugawara, Yasuhiro
[J]. NANOTECHNOLOGY, 2018, 29 (10)
[42] Final State Distributions of O2 Photodesorbed from TiO2(110)
Sporleder, David
Wilson, Daniel P.
White, Michael G.
[J]. JOURNAL OF PHYSICAL CHEMISTRY C, 2009, 113 (30): : 13180 - 13191
[43] Insights into the chemical and photochemical mysteries of O2 on rutile TiO2(110)
Henderson, Michael A.
[J]. ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 2013, 245
[44] Thermal behaviour of the O2/TiO2 (110)-(1 x 2) surface
Abad, J.
Sanchez-Sanchez, C.
Vilmercati, P.
Goldoni, A.
Lopez, M. F.
Martin-Gago, J. A.
[J]. VACUUM, 2011, 85 (12) : 1056 - 1058
[45] UV-enhanced exchange of O2 with H2O adsorbed on TiO2
Muggli, DS
Falconer, JL
[J]. JOURNAL OF CATALYSIS, 1999, 181 (01) : 155 - 159
[46] Electronic states and photoluminescence of TiO2 nanotubes with adsorbed surface oxygen
Liu, L. Z.
Xu, W.
Wu, X. L.
Zhang, Y. Y.
Chen, T. H.
Chu, Paul K.
[J]. APPLIED PHYSICS LETTERS, 2012, 100 (12)
[47] Insights into photoexcited electron scavenging processes on TiO2 obtained from studies of the reaction of O2 with OH groups adsorbed at electronic defects on TiO2(110)
Henderson, MA
Epling, WS
Peden, CHF
Perkins, CL
[J]. JOURNAL OF PHYSICAL CHEMISTRY B, 2003, 107 (02): : 534 - 545
[48] Erratum to: The Kinetics of CO Oxidation by Adsorbed Oxygen on Well-Defined Gold Particles on TiO2(110)
V. Bondzie
S. C. Parker
Charles T. Campbell
[J]. Catalysis Letters, 2011, 141 : 1721 - 1721
[49] COLL 124-Photochemistry on TiO2: Mechanistic studies of O2 photodesorption
Yates, John T., Jr.
[J]. ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 2008, 235
[50] Photocatalytic performance of TiO2 films produced with combination of oxygen-plasma and rapid thermal annealing
Jang, Jun-Won
Park, Jae-Woo
[J]. THIN SOLID FILMS, 2011, 520 (01) : 193 - 198

← 1 2 3 4 5 →