Recent developments in titanium oxide-based photocatalysts

Kitano, Masaaki; Matsuoka, Makoto; Ueshima, Michio; Anpo, Masakazu

doi:10.1016/j.apcata.2007.03.013

Cited by 430 publications

(212 citation statements)

References 91 publications

Supporting

Mentioning

211

Contrasting

Order By: Relevance

“…In fact, besides in organic synthesis [79,80], heterogeneous photocatalysis may find extensive application [23,81] not only in the field of environmental chemistry and pollution control, e.g., in the abatement of both aqueous and gas phase pollutants, but also in the conversion of solar into chemical energy, by thermodynamically up-hill reactions producing fuels, such as hydrogen production from water [82,83] and CO 2 photoreduction yielding methane and methanol [84].…”

Section: Specific Properties and Applications Of {001} Facet-dominatementioning

confidence: 99%

Specific Facets-Dominated Anatase TiO2: Fluorine-Mediated Synthesis and Photoactivity

2013

View full text Add to dashboard Cite

Semiconductors crystal facet engineering has become an important strategy for properly tuning and optimizing both the physicochemical properties and the reactivity of photocatalysts. In this review, a concise survey of recent results obtained in the field of specific surface-oriented anatase TiO 2 crystals preparation is presented. The attention is mainly focused on the fluorine-mediated hydrothermal and/or solvothermal processes employed for the synthesis and the assembly of anatase micro/nanostructures with dominant {001} facets. Their peculiar photocatalytic properties and potential applications are also presented, with a particular focus on photocatalysis-based environmental clean up and solar energy conversion applications. Finally, the most promising results obtained in the engineering of TiO 2 anatase crystal facets obtained by employing alternative, possibly more environmentally friendly methods are critically compared.

show abstract

Section: Specific Properties and Applications Of {001} Facet-dominatementioning

confidence: 99%

Specific Facets-Dominated Anatase TiO2: Fluorine-Mediated Synthesis and Photoactivity

2013

View full text Add to dashboard Cite

show abstract

“…Similarly, carbon can also substitute oxygen or occupy an interstitial site. In nitrogen co-doped sample, the substitution of oxygen sites is most probable due to their closer electronegativity values [34]. Substitutions of S in both anionic and cationic sites of TiO 2 have been reported in the literature [35,36].…”

Section: Characterization Of Prepared Catalystsmentioning

confidence: 99%

Enhanced photocatalytic hydrogen production from water–methanol mixture using cerium and nonmetals (B/C/N/S) co-doped titanium dioxide

Natarajan

2014

Mater Renew Sustain Energy

View full text Add to dashboard Cite

In the present study, photocatalytic hydrogen production from water/methanol solution was investigated over cerium and nonmetal (B/C/N/S) co-doped titanium dioxide catalyst under visible light irradiation. The cerium and nonmetal co-doped titania photocatalysts were prepared by co-precipitation and characterized by surface area and pore size analysis, X-ray diffraction analysis, diffuse reflectance UV-Vis spectroscopy analysis, and photoluminescence analysis. The UV-Visible spectra showed that incorporation of cerium and nonmetals to TiO 2 resulted in narrow band gap and improved absorption of visible light. The band gap energy of co-doped samples depended on the properties of nonmetals. Photoluminescence studies showed that the radiative recombination rates of photogenerated electron-hole pairs were effectively suppressed by the addition of cerium and nonmetals and contributed to higher activity. The highest hydrogen production of 206 lmol/h was obtained for Ce-N-TiO 2 sample, which can be attributed to the higher surface area, higher absorption of visible light, and higher separation efficiency of electron-hole pairs in Ce-N-TiO 2 .

show abstract

“…Albeit metal oxides including TiO 2 , ZnO, and their derivatives are the most common photocatalysts used in water splitting, yet they provide low overall photon-to-hydrogen efficiency ( ) attributed to their wide band gaps [6,7]. To overcome these limitations, doping other metal or inorganic ions to TiO 2 and ZnO materials has been demonstrated [8]. However, this strategy is not quite successful, mainly because their band gaps are greater than 2.0 eV (620 nm) [9], whereas photocatalysts having band gaps less than 2.0 eV can absorb solar light in the visible to nearinfrared region more efficiently.…”

Section: Introductionmentioning

confidence: 99%

High-Efficiency Photochemical Water Splitting of CdZnS/CdZnSe Nanostructures

Wang

Yang

Periasamy

2013

Journal of Materials

View full text Add to dashboard Cite

We have prepared and employed TiO 2 /CdZnS/CdZnSe electrodes for photochemical water splitting. The TiO 2 /CdZnS/CdZnSe electrodes consisting of sheet-like CdZnS/CdZnSe nanostructures (8-10 m in length and 5-8 nm in width) were prepared through chemical bath deposition on TiO 2 substrates. The TiO 2 /CdZnS/CdZnSe electrodes have light absorption over the wavelength 400-700 nm and a band gap of 1.87 eV. Upon one sun illumination of 100 mW cm −2 , the TiO 2 /CdZnS/CdZnSe electrodes provide a significant photocurrent density of 9.7 mA cm −2 at −0.9 V versus a saturated calomel electrode (SCE). Incident photon-tocurrent conversion efficiency (IPCE) spectrum of the electrodes displays a maximum IPCE value of 80% at 500 nm. Moreover, the TiO 2 /CdZnS/CdZnSe electrodes prepared from three different batches provide a remarkable photon-to-hydrogen efficiency of 7.3 ± 0.1% (the rate of the photocatalytically produced H 2 by water splitting is about 172.8 mmol⋅h −1 ⋅g −1 ), which is the most efficient quantum-dots-based photocatalysts used in solar water splitting.

show abstract

Recent developments in titanium oxide-based photocatalysts

Cited by 430 publications

References 91 publications

Specific Facets-Dominated Anatase TiO2: Fluorine-Mediated Synthesis and Photoactivity

Specific Facets-Dominated Anatase TiO2: Fluorine-Mediated Synthesis and Photoactivity

Enhanced photocatalytic hydrogen production from water–methanol mixture using cerium and nonmetals (B/C/N/S) co-doped titanium dioxide

High-Efficiency Photochemical Water Splitting of CdZnS/CdZnSe Nanostructures

Contact Info

Product

Resources

About