Facile route to fabricate carbon-doped TiO2 nanoparticles and its mechanism of enhanced visible light photocatalytic activity

Zhang, Jing; Huang, Gui‐Fang; Li, Dongfeng; Zhou, Bing‐Xin; Chang, Soon-Bok; Pan, Anlian; Huang, Wei‐Qing

doi:10.1007/s00339-016-0522-9

Cited by 19 publications

(6 citation statements)

References 49 publications

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“…A number of methods are commonly used for the production of carbon-doped titanium dioxide materials, including chemical vapour deposition [24], sol-gel [16,25,26], hydrolysis [27], etc.…”

Section: Introductionmentioning

confidence: 99%

Visible light active photocatalytic C-doped titanium dioxide films deposited via reactive pulsed DC magnetron co-sputtering: Properties and photocatalytic activity

Ratova

Klaysri

Praserthdam

et al. 2018

Vacuum

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Doping of TiO2 with carbon is known to be an efficient method of enhancing visible light photocatalytic activity. The present work describes the deposition of carbon-doped titania coatings deposited by reactive magnetron co-sputtering of Ti and C targets. Undoped titania coatings were produced under similar deposition conditions for comparison purposes. Following deposition, all coatings were annealed in air at 873K for 30 min to develop the required crystalline structure; and then analysed with EDS, XRD, AFM, XPS and UV-visible spectrophotometry. A number of tests, including methylene blue and stearic acid decomposition tests, and photo-induced hydrophilicity measurements, were employed for the assessment of the photocatalytic properties of the C-doped and un-doped titanium dioxide coatings under UV and visible light irradiation. It was found that carbon-doped titania coatings significantly outperformed undoped titania when using both visible and UV irradiation. Similar trends were observed for other properties. While excessive carbon doping has been shown to have a negative effect on the photocatalytic properties of the titanium dioxide, overall, carbon doping 2 via reactive co-sputtering has been confirmed as an efficient method of photocatalytic property enhancement. This is due to a narrowing of the bandgap and to extended lifetimes of the photogenerated charge carriers.

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“…A number of methods are commonly used for the production of carbon-doped titanium dioxide materials, including chemical vapour deposition [24], sol-gel [16,25,26], hydrolysis [27], etc.…”

Section: Introductionmentioning

confidence: 99%

Visible light active photocatalytic C-doped titanium dioxide films deposited via reactive pulsed DC magnetron co-sputtering: Properties and photocatalytic activity

Ratova

Klaysri

Praserthdam

et al. 2018

Vacuum

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“…1. Graphical representation of mechanism of photocatalysis [26] and method of preparation of C-doped TiO 2 nanoparticles with different concentration by Sol Gel method.…”

Section: Synthesis Of Pure and C-doped Tio 2 Npsmentioning

confidence: 99%

“…Carbon doping of TiO 2 is thought to be the most promising approach among nonmetal doping as it yields the highest redshift of the valence band edge [4,26,27]. The effect of carbon content on the photocatalytic performance of carbon doped TiO 2 for the photodegradation of methylene blue is explored in this experiment where pure and Carbon doped TiO 2 are made using the sol-gel method.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Photocatalytic Activity of Carbon Doped TiO<sub>2</sub> for Photodegration of Methylene Blue

Bharambe,

Borgaonkar,

Pujari

2024

J. Sci. Res.

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Nanoparticles of pure TiO2 and carbon doped TiO2 (at various concentrations 1, 2, 3 and 4 %) were synthesised by Sol gel method using titanium butoxide and glucose as a precursors for Titanium dioxide and carbon respectively. The samples were calcinated at 500 °C. Photocatalytic activity of the samples was tested for photodegradation of methylene blue dye. Morphological and elemental analysis of the samples were carried out using a scanning electron microscope (SEM), energy dispersive X-ray spectroscopy (EDAX), X-ray diffraction and micro-raman spectroscopy while for optical characterization UV-Vis diffuse reflectance spectra were employed. Results of all samples indicated crystallite growth in a tetragonal structure with the variation in crystallite size in the range 9 nm to 12.6 nm with increase in the concentration of dopant in TiO2. Diffused reflectance spectroscopy (DRS) analysis indicated that the band gap of all doped TiO2 nanoparticles is lesser than that of the pure TiO2 whereas 4C-TiO2 showed smallest band gap (2.98 eV). The maximum photocatalytic activity was observed with 4C-TiO2 among all the samples.

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“…Teh and Muhammed [23] suggest that the doping of TiO 2 allows a considerable reduction of the electrons (e -)/hole (h + ) recombination rate, leading to a higher production of hydroxyl radicals ( • OH). The narrowing of the TiO 2 band gap region can be obtained by metallic (Ag, Cu, Ni, Fe, Ru) and non-metallic (S, N, C, B, P) species [25,26], from the formation of intermediate states. Other studies also have shown the possibility of using doped-TiO 2 for the degradation of different dyes, such as reactive triazine dyes (Yellow 84, Red 120, Blue 160) [27], N,Ndimethyl-4-nitrosoaniline (RNO) [28], tartrazine (TRZ), Eriochrome Black-T (EBT) [29], Rhodamine B (RhB) [30], and principally methyl orange dye and methylene blue [31].…”

Section: Visible-light Photocatalytic Activity and Recyclability Of N-dopedmentioning

confidence: 99%

Visible-light photocatalytic activity and recyclability of N-doped TiO2 films grown by MOCVD

et al. 2020

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Nitrogen-doped TiO2 films were grown on borosilicate glass substrates at 400 °C by the metallorganic chemical vapor deposition (MOCVD) for removing dye from water under visible light. The effect of N-doping on the structural, surface, and photocatalytic properties of films was evaluated. X-ray photoelectron spectroscopy (XPS) analyses revealed that 1.56 and 2.44 at% of nitrogen were incorporated into the films by varying the NH3 flux during the growth. Methyl orange dye degradation experiments showed that the N-doped films presented photoactivity under visible light. The film containing 2.44 at% of nitrogen exhibited the best photocatalytic behavior, with 55% of efficiency. Recyclability tests under visible light showed that the film efficiency dropped gradually after each test. N-TiO2 films grown by MOCVD have the potential to be used in environmental applications by removing pollutants using a green method under sunlight or even under internal illumination, although its reuse is limited.

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Facile route to fabricate carbon-doped TiO2 nanoparticles and its mechanism of enhanced visible light photocatalytic activity

Cited by 19 publications

References 49 publications

Visible light active photocatalytic C-doped titanium dioxide films deposited via reactive pulsed DC magnetron co-sputtering: Properties and photocatalytic activity

Visible light active photocatalytic C-doped titanium dioxide films deposited via reactive pulsed DC magnetron co-sputtering: Properties and photocatalytic activity

Investigation of the Photocatalytic Activity of Carbon Doped TiO<sub>2</sub> for Photodegration of Methylene Blue

Visible-light photocatalytic activity and recyclability of N-doped TiO2 films grown by MOCVD

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