Adsorption and surface reactions of N(C2H5) 3 on powdered TiO2

Chen Fu Lien; Yu Feng Lin; Yi Shiue Lin; Meng Tso Chen; Jong Liang Lin

doi:10.1021/jp0483728

Adsorption and surface reactions of N(C₂H₅) ₃ on powdered TiO₂

Chen Fu Lien
, Yu Feng Lin
, Yi Shiue Lin
, Meng Tso Chen
, Jong Liang Lin

Department of Chemistry

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

5 Citations (Scopus)

Abstract

The adsorption, thermal stability, and photochemical reactions of N(C ₂H₅)₃ on powdered TiO₂ have been studied by Fourier transform infrared spectroscopy (FTIR). N(C₂H ₅)₂ molecules are adsorbed molecularly on TiO₂ at 35°C and can be removed from the surface at 300°C in a vacuum. In the presence of O₂, N(C₂H₂)₃ starts to decompose on TiO₂ at a temperature of ∼215°C. N(C ₂H₅)₃ on TiO₂ is desorbed from the surface upon photoirradiation, In the presence of O₂, the photodesorption process is suppressed and photoreactions of N(C ₂H₅)₃ are promoted. CO₂(g), H ₂O(a), NCO(a), HCOO(a), CH₃COO(a), and surface species containing MM_x, C=0, C-N, or C-N-C groups are detected during N(C₂H₅)₃ photodecomposition on TiO₂. As H₂O is added to the photoreaction system of N(C₂H ₅)₃ on TiO₂ in O₂, the amounts of NCO(a) and NH_x detected during photoirradiation decrease, but with appearance of C=N groups. Most importantly, it is found that H₂O participates in the HCOO(a) and CH₃COO(a) formation.

Original language	English
Pages (from-to)	18261-18268
Number of pages	8
Journal	Journal of Physical Chemistry B
Volume	108
Issue number	47
DOIs	https://doi.org/10.1021/jp0483728
Publication status	Published - 2004 Nov 25

All Science Journal Classification (ASJC) codes

Physical and Theoretical Chemistry
Surfaces, Coatings and Films
Materials Chemistry

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@article{645692b1df044800ad12d3fb7b9cefd0,

title = "Adsorption and surface reactions of N(C2H5) 3 on powdered TiO2",

abstract = "The adsorption, thermal stability, and photochemical reactions of N(C 2H5)3 on powdered TiO2 have been studied by Fourier transform infrared spectroscopy (FTIR). N(C2H 5)2 molecules are adsorbed molecularly on TiO2 at 35°C and can be removed from the surface at 300°C in a vacuum. In the presence of O2, N(C2H2)3 starts to decompose on TiO2 at a temperature of ∼215°C. N(C 2H5)3 on TiO2 is desorbed from the surface upon photoirradiation, In the presence of O2, the photodesorption process is suppressed and photoreactions of N(C 2H5)3 are promoted. CO2(g), H 2O(a), NCO(a), HCOO(a), CH3COO(a), and surface species containing MMx, C=0, C-N, or C-N-C groups are detected during N(C2H5)3 photodecomposition on TiO2. As H2O is added to the photoreaction system of N(C2H 5)3 on TiO2 in O2, the amounts of NCO(a) and NHx detected during photoirradiation decrease, but with appearance of C=N groups. Most importantly, it is found that H2O participates in the HCOO(a) and CH3COO(a) formation.",

author = "Lien, \{Chen Fu\} and Lin, \{Yu Feng\} and Lin, \{Yi Shiue\} and Chen, \{Meng Tso\} and Lin, \{Jong Liang\}",

year = "2004",

month = nov,

day = "25",

doi = "10.1021/jp0483728",

language = "English",

volume = "108",

pages = "18261--18268",

journal = "Journal of Physical Chemistry B",

issn = "1520-6106",

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T1 - Adsorption and surface reactions of N(C2H5) 3 on powdered TiO2

AU - Lien, Chen Fu

AU - Lin, Yu Feng

AU - Lin, Yi Shiue

AU - Chen, Meng Tso

AU - Lin, Jong Liang

PY - 2004/11/25

Y1 - 2004/11/25

N2 - The adsorption, thermal stability, and photochemical reactions of N(C 2H5)3 on powdered TiO2 have been studied by Fourier transform infrared spectroscopy (FTIR). N(C2H 5)2 molecules are adsorbed molecularly on TiO2 at 35°C and can be removed from the surface at 300°C in a vacuum. In the presence of O2, N(C2H2)3 starts to decompose on TiO2 at a temperature of ∼215°C. N(C 2H5)3 on TiO2 is desorbed from the surface upon photoirradiation, In the presence of O2, the photodesorption process is suppressed and photoreactions of N(C 2H5)3 are promoted. CO2(g), H 2O(a), NCO(a), HCOO(a), CH3COO(a), and surface species containing MMx, C=0, C-N, or C-N-C groups are detected during N(C2H5)3 photodecomposition on TiO2. As H2O is added to the photoreaction system of N(C2H 5)3 on TiO2 in O2, the amounts of NCO(a) and NHx detected during photoirradiation decrease, but with appearance of C=N groups. Most importantly, it is found that H2O participates in the HCOO(a) and CH3COO(a) formation.

AB - The adsorption, thermal stability, and photochemical reactions of N(C 2H5)3 on powdered TiO2 have been studied by Fourier transform infrared spectroscopy (FTIR). N(C2H 5)2 molecules are adsorbed molecularly on TiO2 at 35°C and can be removed from the surface at 300°C in a vacuum. In the presence of O2, N(C2H2)3 starts to decompose on TiO2 at a temperature of ∼215°C. N(C 2H5)3 on TiO2 is desorbed from the surface upon photoirradiation, In the presence of O2, the photodesorption process is suppressed and photoreactions of N(C 2H5)3 are promoted. CO2(g), H 2O(a), NCO(a), HCOO(a), CH3COO(a), and surface species containing MMx, C=0, C-N, or C-N-C groups are detected during N(C2H5)3 photodecomposition on TiO2. As H2O is added to the photoreaction system of N(C2H 5)3 on TiO2 in O2, the amounts of NCO(a) and NHx detected during photoirradiation decrease, but with appearance of C=N groups. Most importantly, it is found that H2O participates in the HCOO(a) and CH3COO(a) formation.

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DO - 10.1021/jp0483728

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AN - SCOPUS:10044252220

SN - 1520-6106

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JO - Journal of Physical Chemistry B

JF - Journal of Physical Chemistry B

IS - 47

ER -

Adsorption and surface reactions of N(C₂H₅) ₃ on powdered TiO₂

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