Imaging reactions of acetone with oxygen adatoms on partially oxidized TiO2(110)

Yaobiao Xia; Jingyun Ye; Patrick Murray; Amir Ali; Qingfeng Ge; Zhenrong Zhang

doi:10.1039/c3cp51695d

Imaging reactions of acetone with oxygen adatoms on partially oxidized TiO₂(110)

Yaobiao Xia, Jingyun Ye, Patrick Murray, Amir Ali, Qingfeng Ge, Zhenrong Zhang

Chemistry (Twin Cities)

Research output: Contribution to journal › Article › peer-review

9 Scopus citations

Abstract

Understanding the interaction of O₂ with ketones on metal oxide surfaces is important for the photo-oxidation of toxic organic molecules. The consecutive reaction steps of acetone molecules with oxygen adatoms (O _a's) on partially oxidized TiO₂(110) surfaces have been studied using high-resolution scanning tunneling microscopy (STM) at 300 K. The sequential isothermal STM images reveal two types of acetone-O_a species as a result of reactions of acetone with an oxygen adatom and a bridging bound oxygen vacancy (V_O). One such species is the Ti _5c-bound acetone-O_a diolate formed from Ti _5c-bound acetone reacting with O_a. The diolate is mobile at 300 K and can assist the diffusion of surface O_a by exchanging the acetone oxygen with the O_a. The second acetone-O_a species is the V_O-bound acetone-O_a complex formed from a V _O-bound acetone reacting with an O_a located on the neighboring Ti row. The V_O-bound complex is stationary at 300 K. This species has not been reported previously.

Original language	English (US)
Pages (from-to)	13897-13901
Number of pages	5
Journal	Physical Chemistry Chemical Physics
Volume	15
Issue number	33
DOIs	https://doi.org/10.1039/c3cp51695d
State	Published - 2013

Access

10.1039/c3cp51695d

OpenUrl availability

Full text

Cite this

@article{10c7a8dd1b8141f48a98cd7199978322,

title = "Imaging reactions of acetone with oxygen adatoms on partially oxidized TiO2(110)",

abstract = "Understanding the interaction of O2 with ketones on metal oxide surfaces is important for the photo-oxidation of toxic organic molecules. The consecutive reaction steps of acetone molecules with oxygen adatoms (O a's) on partially oxidized TiO2(110) surfaces have been studied using high-resolution scanning tunneling microscopy (STM) at 300 K. The sequential isothermal STM images reveal two types of acetone-Oa species as a result of reactions of acetone with an oxygen adatom and a bridging bound oxygen vacancy (VO). One such species is the Ti 5c-bound acetone-Oa diolate formed from Ti 5c-bound acetone reacting with Oa. The diolate is mobile at 300 K and can assist the diffusion of surface Oa by exchanging the acetone oxygen with the Oa. The second acetone-Oa species is the VO-bound acetone-Oa complex formed from a V O-bound acetone reacting with an Oa located on the neighboring Ti row. The VO-bound complex is stationary at 300 K. This species has not been reported previously.",

author = "Yaobiao Xia and Jingyun Ye and Patrick Murray and Amir Ali and Qingfeng Ge and Zhenrong Zhang",

year = "2013",

doi = "10.1039/c3cp51695d",

language = "English (US)",

volume = "15",

pages = "13897--13901",

journal = "Physical Chemistry Chemical Physics",

issn = "1463-9076",

publisher = "Royal Society of Chemistry",

number = "33",

}

TY - JOUR

T1 - Imaging reactions of acetone with oxygen adatoms on partially oxidized TiO2(110)

AU - Xia, Yaobiao

AU - Ye, Jingyun

AU - Murray, Patrick

AU - Ali, Amir

AU - Ge, Qingfeng

AU - Zhang, Zhenrong

PY - 2013

Y1 - 2013

N2 - Understanding the interaction of O2 with ketones on metal oxide surfaces is important for the photo-oxidation of toxic organic molecules. The consecutive reaction steps of acetone molecules with oxygen adatoms (O a's) on partially oxidized TiO2(110) surfaces have been studied using high-resolution scanning tunneling microscopy (STM) at 300 K. The sequential isothermal STM images reveal two types of acetone-Oa species as a result of reactions of acetone with an oxygen adatom and a bridging bound oxygen vacancy (VO). One such species is the Ti 5c-bound acetone-Oa diolate formed from Ti 5c-bound acetone reacting with Oa. The diolate is mobile at 300 K and can assist the diffusion of surface Oa by exchanging the acetone oxygen with the Oa. The second acetone-Oa species is the VO-bound acetone-Oa complex formed from a V O-bound acetone reacting with an Oa located on the neighboring Ti row. The VO-bound complex is stationary at 300 K. This species has not been reported previously.

AB - Understanding the interaction of O2 with ketones on metal oxide surfaces is important for the photo-oxidation of toxic organic molecules. The consecutive reaction steps of acetone molecules with oxygen adatoms (O a's) on partially oxidized TiO2(110) surfaces have been studied using high-resolution scanning tunneling microscopy (STM) at 300 K. The sequential isothermal STM images reveal two types of acetone-Oa species as a result of reactions of acetone with an oxygen adatom and a bridging bound oxygen vacancy (VO). One such species is the Ti 5c-bound acetone-Oa diolate formed from Ti 5c-bound acetone reacting with Oa. The diolate is mobile at 300 K and can assist the diffusion of surface Oa by exchanging the acetone oxygen with the Oa. The second acetone-Oa species is the VO-bound acetone-Oa complex formed from a V O-bound acetone reacting with an Oa located on the neighboring Ti row. The VO-bound complex is stationary at 300 K. This species has not been reported previously.

UR - http://www.scopus.com/inward/record.url?scp=84881220381&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84881220381&partnerID=8YFLogxK

U2 - 10.1039/c3cp51695d

DO - 10.1039/c3cp51695d

M3 - Article

C2 - 23842844

AN - SCOPUS:84881220381

SN - 1463-9076

VL - 15

SP - 13897

EP - 13901

JO - Physical Chemistry Chemical Physics

JF - Physical Chemistry Chemical Physics

IS - 33

ER -

Imaging reactions of acetone with oxygen adatoms on partially oxidized TiO₂(110)

Abstract

Access

OpenUrl availability

Other files and links

Fingerprint

Cite this