2017
DOI: 10.1016/j.apsusc.2016.07.007
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Effect of band gap engineering in anionic-doped TiO 2 photocatalyst

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Cited by 187 publications
(64 citation statements)
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“…In the presence of Pt an increase of the absorption in the visible light region, with respect to the bare TiO 2 , occurred, whilst a slight decrease was observed in the presence of nitrogen. The light absorption above 500 nm of the Pt‐TiO 2 ‐N and Pt‐TiO 2 ‐W samples can be attributed to oxygen vacancies, in accordance with the literature , . In Figure B it can be noticed that the spectrum of Pt‐TiO 2 is red shifted with respect to those of the samples containing W because the sample mainly consists of rutile phase.…”
Section: Resultssupporting
confidence: 87%
“…In the presence of Pt an increase of the absorption in the visible light region, with respect to the bare TiO 2 , occurred, whilst a slight decrease was observed in the presence of nitrogen. The light absorption above 500 nm of the Pt‐TiO 2 ‐N and Pt‐TiO 2 ‐W samples can be attributed to oxygen vacancies, in accordance with the literature , . In Figure B it can be noticed that the spectrum of Pt‐TiO 2 is red shifted with respect to those of the samples containing W because the sample mainly consists of rutile phase.…”
Section: Resultssupporting
confidence: 87%
“…The oxidation and reduction capabilities of trapped holes and electrons at the surface active sites of TiO 2 nano‐photocatalysts are known to directly depend on the positions of valence band (VB) and conduction band (CB), respectively. According to the literature data, the standart redox potentials of the main reactions occurring during the photocatalytic degradation of MB and RhB are the following: E0O2/O2·-=-0.33eV and E0(H2O/·OH)=2.7eV. For anatase TiO 2 (E g ∼3.2), these values are close to the bottom of the CB potential (‐0.52 eV) and to the top of the VB potential (2.68 eV), respectively . Thereby, the photogenerated charge carriers and reactive oxygen species, such as hydroxyl and superoxide anion radicals, can take part in the photocatalytic degradation of the dyes in the presence of TiO 2 ‐NPs …”
Section: Resultssupporting
confidence: 92%
“…Another potential method is photodegradation. Most photocatalysts are limited by large band gap, very high electron-hole recombination, and being unstable in water, which can cause the decomposition of such catalysts (Samsudin and Hamid, 2017). Nevertheless, these materials can be doped to reduce the band gap and increase quantum yield.…”
Section: Discussionmentioning
confidence: 99%