The effect of the hydrothermal treatment with aqueous NaOH solution on the photocatalytic and photoelectrochemical properties of visible light-responsive TiO2 thin films

Matsuoka, Makoto; Kitano, Masaaki; Fukumoto, Shohei; Iyatani, Kazushi; Takeuchi, Masato; Anpo, Masakazu

doi:10.1016/j.cattod.2007.12.032

Cited by 31 publications

(27 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The difference in structure has been revealed to affect not only the translation efficiency of excited electrons, but also influence the interfacial barrier and concentration gradient of the reaction solution. Even though the yield of hydrogen produced in this study was lower than that reported by Anpo et al [68], it has been demonstrated that mesoporous titania thin films can be successfully prepared by a simple and reliable chemical method instead of an expensive physical method. In addition to the H-type reactor system, Wu and his group has recently developed a novel twin-reactor system that combines the advantages of both Z-scheme and H-type reactor systems to carry out water-splitting reaction [69].…”

Section: Types Of Photocatalytic Water-splitting Reactioncontrasting

confidence: 48%

Hydrogen Production from Semiconductor-based Photocatalysis via Water Splitting

2012

View full text Add to dashboard Cite

Abstract:Hydrogen is the ideal fuel for the future because it is clean, energy efficient, and abundant in nature. While various technologies can be used to generate hydrogen, only some of them can be considered environmentally friendly. Recently, solar hydrogen generated via photocatalytic water splitting has attracted tremendous attention and has been extensively studied because of its great potential for low-cost and clean hydrogen production. This paper gives a comprehensive review of the development of photocatalytic water splitting for generating hydrogen, particularly under visible-light irradiation. The topics covered include an introduction of hydrogen production technologies, a review of photocatalytic water splitting over titania and non-titania based photocatalysts, a discussion of the types of photocatalytic water-splitting approaches, and a conclusion for the current challenges and future prospects of photocatalytic water splitting. Based on the literatures reported here, the development of highly stable visible-light-active photocatalytic materials, and the design of efficient, low-cost photoreactor systems are the key for the advancement of solar-hydrogen production via photocatalytic water splitting in the future.

show abstract

Section: Types Of Photocatalytic Water-splitting Reactioncontrasting

confidence: 48%

Hydrogen Production from Semiconductor-based Photocatalysis via Water Splitting

2012

View full text Add to dashboard Cite

show abstract

“…The main origins of the visible light activity of the VisTiO 2 thin film photocatalysts can be ascribed to the Vis-TiO 2 deposited onto the various substrates, since the O/Ti ratio of the Vis-TiO 2 thin films gradually decreases from the top surface (O/Ti ratio of 2.00) to the inside bulk (O/Ti ratio of 1.93). Such an anisotropic morphology of the Vis-TiO 2 thin film may modify the electronic properties of the thin films, leading to changes in the band gap energy [20][21][22][23][24][25]. Thus, it was elucidated that Pt-Vis-TiO 2 /N-Titanystar can be applied for …”

Section: Pt-vis-tio 2 /N-titanystar Gas Inletmentioning

confidence: 97%

Photocatalytic activity of visible light-responsive TiO2 thin films deposited on various anodized Ti-metal substrates by a RF magnetron sputtering method

et al. 2010

Self Cite

View full text Add to dashboard Cite

Visible light-responsive TiO 2 (Vis-TiO 2 ) thin film has been deposited on two different kinds of anodized Ti-metal substrates, i.e., plate-type Titanystar (P-Titanystar) or non-woven fabric Titanystar (N-Titanystar) by a radio-frequency magnetron sputtering (RF-MS) method. These Vis-TiO 2 thin film photocatalysts (Vis-TiO 2 /P-Titanystar and Vis-TiO 2 /N-Titanystar) showed high activity for the oxidation of 2-propanol in water under UV light irradiation while Vis-TiO 2 /NTitanystar showed higher activity than Vis-TiO 2 /P-Titanystar. Furthermore, photocatalytic activity of Vis-TiO 2 /N-Titanystar was enhanced by the Pt deposition by an RF-MS deposition method. Pt loaded Vis-TiO 2 /N-Titanystar (Pt-Vis-TiO 2 /NTitanystar) acted as an efficient photocatalyst for the oxidation of methanol vapor under UV light irradiation even in a flow system. Moreover, it was found that Pt-Vis-TiO 2 /N-Titanystar is an effective photocatalyst for the oxidation of various organic compounds in gas phase or ammonia gas even under visible light irradiation (k [ 420 nm) at 293 K.

show abstract

“…By post-synthesis hydrothermal treatment of films produced in such a way it was possible to increase substantially their activity in the photoreduction of water on account of increase in the degree of crystallinity and specific surface area of the film [112]. In [115] samples in which the titanium dioxide had the form of "columns" arranged normally to the surface of the film, where the O/Ti ratio varied from 2.00 at the top of the "column" to 1.93 at the point of its contact with the substrate, were produced by such a method.…”

Section: Photocatalytic Systems Based On Semiconductors Doped With Mementioning

confidence: 99%

“…In [108][109][110][111][112][113][114] it was proposed to use radio-frequency magnetron deposition for the production of TiO 2 films in which the sensitivity to visible light was due to the disruption of the stoichiometry -an O/Ti gradient from the surface into the volume of the film. By post-synthesis hydrothermal treatment of films produced in such a way it was possible to increase substantially their activity in the photoreduction of water on account of increase in the degree of crystallinity and specific surface area of the film [112].…”

Section: Photocatalytic Systems Based On Semiconductors Doped With Mementioning

confidence: 99%

Semiconductor photocatalytic systems for the production of hydrogen by the action of visible light

et al. 2009

View full text Add to dashboard Cite

Data on investigations of recent years on the creation of semiconductor photocatalytic systems for the production of hydrogen from water and aqueous solutions of electron-donating substrates are reviewed. Physicochemical approaches to extending the range of spectral sensitivity of the semiconductors (the use of sensitizers, semiconducting heterostructures, doping with metals and metalloids) are examined. Possible ways of improving the photocatalytic systems for the production of hydrogen with metal-sulfide and other types of semiconductors are analyzed. A general description of the advances and planned developments in the creation of photocatalytic converters of solar energy is given.

show abstract

The effect of the hydrothermal treatment with aqueous NaOH solution on the photocatalytic and photoelectrochemical properties of visible light-responsive TiO2 thin films

Cited by 31 publications

References 19 publications

Hydrogen Production from Semiconductor-based Photocatalysis via Water Splitting

Hydrogen Production from Semiconductor-based Photocatalysis via Water Splitting

Photocatalytic activity of visible light-responsive TiO2 thin films deposited on various anodized Ti-metal substrates by a RF magnetron sputtering method

Semiconductor photocatalytic systems for the production of hydrogen by the action of visible light

Contact Info

Product

Resources

About