Fabrication and characterization of C-doped anatase TiO<sub>2</sub>photocatalysts

Choi, Yeongsoo; Umebayashi, T.; Yoshikawa, Mitsuo

doi:10.1023/b:jmsc.0000016198.73153.31

Cited by 245 publications

(155 citation statements)

References 11 publications

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“…These band gap modifications of n-TiO 2 extended the use of solar energy up to the visible region. The XRD and XPS analysis (47) demonstrated that C was incorporated onto O sites of the TiO 2 lattice. This was also confirmed by Noguhi et al (50).…”

Section: Introductionmentioning

confidence: 99%

“…These studies showed that carbon addition to TiO 2 lowered the band gap and make them active under irradiation with visible light. Spray pyrolysis of Ti with carbonaceous precursors (43)(44)(45) and oxidation of TiC (46)(47)(48)(49) can be also applied for preparation of TiO 2 modified by carbon. In the previous studies researches revealed (45) that C doping decreased the energy band gap of TiO 2 from 3.2 to 2.78 eV and created a new energy band located above the valence band with energy of 1.45 eV.…”

Section: Introductionmentioning

confidence: 99%

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The Photocatalytic Performance of Benzene- Modified TiO2 Photocatalysts under UV-vis Light Irradiation

Kusiak-Nejman¹,

Wanag²,

Kowalczyk³

et al. 2015

Journal of Advanced Oxidation Technologies

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Abstract:In this study a photocatalytic performance of new carbon-modified titanium dioxide photocatalysts was discussed. Benzene was used as carbon precursor. It was found that the photocatalytic activity of obtained samples increases with the increase of modification temperature and decrease of carbon concentration present in TiO 2 /C samples. This could be related to the kind of interactions between TiO 2 surface and carbon from thermal decomposition of benzene. The higher calcination temperature the less carbon deposits on the surface of modified samples and the higher probability of the Ti and C interaction confirmed by means of UV-vis/DR studies. It was proved that the photocatalytic activity of carbon modified titania nanomaterials strongly depends on carbon content in TiO 2 /C photocatalysts. Modification of starting TiO 2 with benzene is a promising method especially by taking into account the mineralization of phenol and the co-products of its degradation.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The Photocatalytic Performance of Benzene- Modified TiO2 Photocatalysts under UV-vis Light Irradiation

Kusiak-Nejman¹,

Wanag²,

Kowalczyk³

et al. 2015

Journal of Advanced Oxidation Technologies

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“…99 In Asahi's study, C dopant introduced deep states in the gap. 89 C-doped TiO 2 made using a flame method showed long-tail absorption spectra in the visible light region, 90,101 and demonstrated enhanced activity over pure TiO 2 in water splitting as shown in Fig. 5.…”

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confidence: 95%

Nanomaterials for renewable energy production and storage

et al. 2012

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Over the past decades, there have been many projections on the future depletion of the fossil fuel reserves on earth as well as the rapid increase in green-house gas emissions. There is clearly an urgent need for the development of renewable energy technologies. On a different frontier, growth and manipulation of materials on the nanometer scale have progressed at a fast pace. Selected recent and significant advances in the development of nanomaterials for renewable energy applications are reviewed here, and special emphases are given to the studies of solar-driven photocatalytic hydrogen production, electricity generation with dye-sensitized solar cells, solidstate hydrogen storage, and electric energy storage with lithium ion rechargeable batteries.

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“…Several methods have been reported in the literature for the synthesis of C-doped TiO 2 [21][22][23][24][25], some produced C-doped TiO 2 with sharp UV-Vis absorption edge with variable anatase TiO 2 phase stability and morphology [21][22][23] and some produced materials with poorly crystallized structure lack of a sharp UV-Vis adsorption edge [24,25]. Shi et al [23] prepared C-doped TiO 2 hollow spheres with hierarchical macroporous channels using carbon spheres as both a template and a carbon doping source.…”

Section: Introductionmentioning

confidence: 99%

Highly Crystallized C-Doped Mesoporous Anatase TiO2 with Visible Light Photocatalytic Activity

et al. 2016

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Abstract:Highly crystallized C-doped mesoporous anatase TiO 2 is prepared using a multi-walled carbon nanotube (MWCNT) mat as both a "rigid" pore template and a carbon doping source. SEM and TEM characterization shows that the MWCNT template imposed a pore structure in reverse of that of the MWCNT mat. The pore walls are formed by chain-like interconnected TiO 2 nanocrystals with an average diameter about 10 nm, and pores are derived from spaces occupied by MWCNTs before removal. XRD characterization shows that TiO 2 is crystallized with a pure anatase phase. XPS characterization reveals that the relative carbon content in the TiO 2 is related to the duration of TiO 2 /MWCNT composite annealing before removal of MWCNT template. Three plateau of adsorption from 450-800 nm in UV-Vis spectra in comparison to that of P25; and display visible light photocatalytic activity for decomposition of methyl orange (MO) in relationship with the carbon content and crystallinity of the anatase TiO 2 .

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Fabrication and characterization of C-doped anatase TiO₂photocatalysts

Cited by 245 publications

References 11 publications

The Photocatalytic Performance of Benzene- Modified TiO2 Photocatalysts under UV-vis Light Irradiation

The Photocatalytic Performance of Benzene- Modified TiO2 Photocatalysts under UV-vis Light Irradiation

Nanomaterials for renewable energy production and storage

Highly Crystallized C-Doped Mesoporous Anatase TiO2 with Visible Light Photocatalytic Activity

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Fabrication and characterization of C-doped anatase TiO2photocatalysts

Cited by 245 publications

References 11 publications

The Photocatalytic Performance of Benzene- Modified TiO2 Photocatalysts under UV-vis Light Irradiation

The Photocatalytic Performance of Benzene- Modified TiO2 Photocatalysts under UV-vis Light Irradiation

Nanomaterials for renewable energy production and storage

Highly Crystallized C-Doped Mesoporous Anatase TiO2 with Visible Light Photocatalytic Activity

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Fabrication and characterization of C-doped anatase TiO₂photocatalysts