کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5424034 | 1395811 | 2009 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Adsorption structure of acetic anhydride on a TiO2(1Â 1Â 0) surface observed by scanning tunneling microscopy
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The carboxylic acids are stably adsorbed on TiO2(1Â 1Â 0) surfaces at room temperature. To demonstrate the neutralization mechanism proposed by Ashima et al. [H. Ashima, W.-J. Chun, K. Asakura, Surf. Sci. 601 (2007) 1822.] that explains the stable adsorption of carboxylic acids, we studied the full-coverage adsorption structure of acetic anhydride on a TiO2(1Â 1Â 0) surface by STM (scanning tunneling microscopy). We directly observed three postulated species on the TiO2(1Â 1Â 0) surface; normal acetates (termed acetate A) forming a (2Â ÃÂ 1) ordered structure, a minor acetate species (termed acetate B) which was present between the bridging oxygen and the 5-fold Ti, and the oxygen vacancies. We determined the ratio of these three species. This ratio was in good agreement with the postulated conversion reaction of acetate B to A.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Surface Science - Volume 603, Issue 3, 1 February 2009, Pages 552-557
Journal: Surface Science - Volume 603, Issue 3, 1 February 2009, Pages 552-557
نویسندگان
Kumiko Kinoshita, Shushi Suzuki, Wang-Jae Chun, Satoru Takakusagi, Kiyotaka Asakura,