Visible-light sensitization of TiO2 photocatalysts by wet-method N doping

Sato, Shinri; Nakamura, Ryuhei; Abe, Shinji

doi:10.1016/j.apcata.2005.01.028

Cited by 420 publications

(280 citation statements)

References 24 publications

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“…The XPS peaks of N1s appears at binding energy 399.7eV. This result is consistent with Hu [7] and Sato [8]et alThe peak at about 399.5 eV (398.4 EV-399.7 eV)was frequently observed for N-doped TiO 2 materials [9] .This binding energy is corresponding to the interstitial doped N 1s electron binding energy of the N atom, and the N atoms capture electrons from Ti and O, with electron density decreasing, such that interstitial N-doped atom are easily formed in the crystalline lattice [10] . intensity/a.u.…”

Section: Photocatalytic Decomposition Of Methyl Orangesupporting

confidence: 81%

Effect of Nitrogen-doping on photocatalytic activity of nanosized TiO2 catalyst

Zhang¹,

Cai²,

Liu³

et al. 2017

Proceedings of the 2017 5th International Conference on Machinery, Materials and Computing Technology (ICMMCT 2017)

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Section: Photocatalytic Decomposition Of Methyl Orangesupporting

confidence: 81%

Effect of Nitrogen-doping on photocatalytic activity of nanosized TiO2 catalyst

Zhang¹,

Cai²,

Liu³

et al. 2017

Proceedings of the 2017 5th International Conference on Machinery, Materials and Computing Technology (ICMMCT 2017)

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“…In the samples prepared with nitric acid, peaks were clearly observed at 398-399 eV. This band is assigned to the O-N bond in some nitrogen oxide species present in the system [5,7,21,26].…”

Section: Characterization Of the Photocatalystsmentioning

confidence: 91%

Nitrogen doping into titanium dioxide by the sol–gel method using nitric acid

et al. 2011

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N-doped TiO 2 has been prepared by use of sol-gel systems containing titanium alkoxide, with nitric acid as the nitrogen source.The time needed for gelation of the systems was drastically reduced by ultrasonic irradiation. The peaks assigned to the nitrate and nitrous ions were observed by FT-IR measurement during the sol-gel reaction. The N-doping was confirmed by observation of N-O peaks in the XPS spectrum of the sample heated at 400 °C.The nitrate ion acted as an oxidizer of the ethanol solvent and titanium species. The TiO 2 became doped with nitrogen oxide species were doped as a result of reduction of nitrate ion incorporated into the dried gel samples. These results indicated that the added nitric acid was reduced during the sol-gel transition and heating process, and the resulting NO species were situated in the titania networks. The UV and visible photocatalytic activity of the samples was confirmed by the degradation of trichloroethylene.

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“…The results of Diwald et al [30] rather indicate negative contribution of Ti-N bonding to photocatalytic activity. According to the reports [31,32], N 1s state at 400 eV in our doped samples of TiO 2 samples by the solvothermal method is in an oxidized state similar to -(NO) and interstitially dopant -(NH) from HMT, which can be attributed to the doping status of N 1s(II) at 398.8-401.2 eV classified by Chen et al [33]. The -(NO) and -(NH) dopants may have positive effects on the visible light photocatalytic activity.…”

Section: Effect Of N-dopingmentioning

confidence: 99%