Photophysical and enhanced daylight photocatalytic properties of N-doped TiO2/g-C3N4 composites

Yang, Na; Li, Guoqiang; Wang, Wanling; Yang, Xiaoli; Zhang, W.F.

doi:10.1016/j.jpcs.2011.07.028

Cited by 91 publications

(52 citation statements)

References 44 publications

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“…In case of the TiO 2 /g-C 3 N 4 photocatalysts their PL intensities decreased in the order g-C 3 N 4 > TiO 2 /g-C 3 N 4 (1:6) > TiO 2 /g-C 3 N 4 (1:4) > TiO 2 /g-C 3 N 4 (1:2) > TiO 2 which agrees with observations of other authors [13,18,43,44]. This phenomenon can be explained by separation of photoinduced electrons between g-C 3 N 4 and TiO 2 structures via their heterojunctions.…”

Section: Photocatalysts Characterizationsupporting

confidence: 91%

“…The possible reason is that the differences between the π* → π and π* → LP states decreased as a result of dipole-dipole interactions between the π* and π electron states and TiO 2 occurred on the TiO 2 /g-C 3 N 4 heterojunction. However, although such shifts of the PL maxima were observed in some papers no explanations were provided [43,44].…”

Section: Photocatalysts Characterizationmentioning

confidence: 95%

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Photocatalytic decomposition of N2O over TiO2/g-C3N4 photocatalysts heterojunction

Kočí

Reli

Troppová

et al. 2017

Applied Surface Science

107

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Section: Photocatalysts Characterizationsupporting

confidence: 91%

Section: Photocatalysts Characterizationmentioning

confidence: 95%

Photocatalytic decomposition of N2O over TiO2/g-C3N4 photocatalysts heterojunction

Kočí

Reli

Troppová

et al. 2017

Applied Surface Science

107

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“…It is expected that coupling g-C 3 N 4 with TiO 2 would form a Z-scheme photocatalytic system and solve the problems normally encountered when using each of the semiconducting materials individually. In order to further improve the photocatalytic performance of the g-C 3 N 4 /TiO 2 composite under visible-light irradiation, attempts on developing composites, such as g-C 3 N 4 -Ti 3+ /TiO 2 and S-, N-, or Fe 3+ -doped TiO 2 /g-C 3 N 4 , have been made [21][22][23][24]. However, very few works have been done on the fabrication of g-C 3 N 4 and Fe-doped TiO 2 nanocomposite structures.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of a Z-Scheme g-C3N4/Fe-TiO2 Photocatalytic Composite with Enhanced Photocatalytic Activity under Visible Light Irradiation

Zhu

Murugananthan

et al. 2018

Catalysts

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Abstract:In the present study, a nanocomposite material g-C 3 N 4 /Fe-TiO 2 has been prepared successfully by a simple one-step hydrothermal process and its structural properties were thoroughly studied by various characterization techniques, such as X-ray diffraction (XRD), Fourier Transform Infrared (FTIR) spectroscopy, electron paramagnetic resonance (EPR) spectrum, X-ray photoelectron spectroscopy (XPS), and UV-vis diffuse reflectance spectrometry (UV-vis DRS). The performance of the fabricated composite material towards the removal of phenol from aqueous phase was systematically evaluated by a photocatalytic approach and found to be highly dependent on the content of Fe 3+ . The optimum concentration of Fe 3+ doping that showed a dramatic enhancement in the photocatalytic activity of the composite under visible light irradiation was observed to be 0.05% by weight. The separation mechanism of photogenerated electrons and holes of the g-C 3 N 4 /Fe-TiO 2 photocatalysts was established by a photoluminescence technique in which the reactive species generated during the photocatalytic treatment process was quantified. The enhanced photocatalytic performance observed for g-C 3 N 4 -Fe/TiO 2 was ascribed to a cumulative impact of both g-C 3 N 4 and Fe that extended its spectrum-absorptive nature into the visible region. The heterojunction formation in the fabricated photocatalysts not only facilitated the separation of the photogenerated charge carriers but also retained its strong oxidation and reduction ability.

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“…However, there are also many drawbacks for the g-C 3 N 4 materials, which include low specific surface area, and high recombination rate of photogenerated electron-hole pairs. Therefore, many attempts have been made to improve the photocatalytic performance of g-C 3 N 4 , such as noble metal deposition [10], preparation of nano/porous g-C 3 N 4 [11,12], protonating g-C 3 N 4 by strong mineral acids [13], and constructing a heterojunction composite with another semiconductor [14][15][16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Magnetic Fe3O4@G-C3N4 Nanocomposites for Visible Light Photocatalysis of RhB

Liu¹,

Xü²,

Gao³

et al. 2017

JAN

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Abstract. Visible light-responsive Fe 3 O 4 @g-C 3 N 4 nanocomposites were prepared by hydrothermal method with g-C 3 N 4 nanosheets as the substrates. The photocatalytic performances of the Fe 3 O 4 @g-C 3 N 4 nanocomposites were evaluated in photo Fenton-like discoloration of RhB dye using H 2 O 2 as an oxidant under visible-light irradiation. Meanwhile, the reusability and magnetic properties were also investigated. The results revealed that the Fe 3 O 4 @g-C 3 N 4 nanocomposites showed considerable photocatalytic activity, and exhibited excellent reusability with almost no change after four runs, and more importantly, Fe 3 O 4 @g-C 3 N 4 nanocomposites could be recovered magnetically. Therefore, the fabricated Fe 3 O 4 @g-C 3 N 4 nanocomposite photocatalyst is a promising candidate for energy conversion and environmental remediation.

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Photophysical and enhanced daylight photocatalytic properties of N-doped TiO2/g-C3N4 composites

Cited by 91 publications

References 44 publications

Photocatalytic decomposition of N2O over TiO2/g-C3N4 photocatalysts heterojunction

Photocatalytic decomposition of N2O over TiO2/g-C3N4 photocatalysts heterojunction

Fabrication of a Z-Scheme g-C3N4/Fe-TiO2 Photocatalytic Composite with Enhanced Photocatalytic Activity under Visible Light Irradiation

Magnetic Fe<sub>3</sub>O<sub>4</sub>@G-C<sub>3</sub>N<sub>4</sub> Nanocomposites for Visible Light Photocatalysis of RhB

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