Photocatalysis over binary metal oxides. Enhancement of the photocatalytic activity of titanium dioxide in titanium-silicon oxides

Anpo, Masakazu; Nakaya, Hiroaki; Kodama, Shintaro; Kubokawa, Yutaka; Domen, Kazunari; Onishi, Takaharu

doi:10.1021/j100399a036

Cited by 212 publications

(117 citation statements)

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“…By incorporating SiO 2 as a mesoporous support into the TiO 2 lattice it has been found that the photocatalytic activity of the system increases (Anpo et al, 1986. While the SiO 2 in the system is not photocatalytically active, it is understood that the SiO 2 mesoporous network serves to not only spatially separate the TiO 2 NPs but also serves to increase the surface area of the system for CO 2 to bind and be reduced.…”

Section: Tio 2 -Related Photocatalystsmentioning

confidence: 99%

Comparison of CO2 Photoreduction Systems: A Review

Wang

Soulis

Yang

et al. 2014

Aerosol Air Qual. Res.

143

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Carbon dioxide (CO 2 ) emissions are a major contributor to the climate change equation, and thus strategies need to be developed in order to reduce increases in CO 2 levels in the atmosphere. One of the most promising approaches is to convert CO 2 into useful products in engineered processes. The photocatalytic reduction of CO 2 into hydrocarbon fuels is a promising way to recycle CO 2 as a fuel feedstock by taking advantage of the readily available solar energy. This article reviews the basics of CO 2 photoreduction mechanisms, limiting steps, possible strategies to enhance photoreduction efficiency, and the state-of-the-art photocatalytic systems for CO 2 reduction. In particular, a comparison between different catalytic systems, including biological (plants and algae), inorganics (semiconductors), organics (molecular complexes), and hybrid (enzyme/semiconductors) systems is provided.

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Section: Tio 2 -Related Photocatalystsmentioning

confidence: 99%

Comparison of CO2 Photoreduction Systems: A Review

Wang

Soulis

Yang

et al. 2014

Aerosol Air Qual. Res.

143

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“…The hydrogenation to ethane was efficiently occurred upon the bimetal/TiO2, on which the role of the latter metals (Ni or Cu) was to suppress the hydrogen production as side reaction. Titanium-silicon (Ti/Si) binary oxides were prepared and utilized for the photocatalytic hydrogenation of alkenes and alkynes with H2O by Anpo's group [20][21][22]. The reactivity and selectivity for the hydrogenation of CH3C≡CH were investigated as a function of the Ti content [21,22].…”

Section: Photocatalytic Hydrogenation On Semiconductor Particles 295mentioning

confidence: 99%

“…Titanium-silicon (Ti/Si) binary oxides were prepared and utilized for the photocatalytic hydrogenation of alkenes and alkynes with H2O by Anpo's group [20][21][22]. The reactivity and selectivity for the hydrogenation of CH3C≡CH were investigated as a function of the Ti content [21,22]. It was found that the hydrogenation with bond fission producing C2H6 and CH4 was predominant in regions of low Ti content, whereas the hydrogenation yielding C3H6 p r o c e e d e d i n r e g i o n s o f h i g h T i c o n t e n t .…”

Section: Photocatalytic Hydrogenation On Semiconductor Particles 295mentioning

confidence: 99%

Photocatalytic Hydrogenation on Semiconductor Particles

Kohtani¹,

Yoshioka²,

Miyabe³

2012

Hydrogenation

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“…Moreover, the composite with silica is also expected to provide functions such as an adsorptive capacity, leading to the modification of the photocatalytic activity. In fact, as for TiO 2 nanoparticles, the effectiveness of the addition of silica for enhancement of the phase stability [26][27][28][29] and the photocatalytic activity 30,31) has been reported in large numbers. In the present work, silca-containing TiO 2 -derived nanotubes were prepared by hydrothermal treatments of anatasetype TiO 2 in NaOH aqueous solutions and a subsequent addition of tetraethyl orthosilicate (TEOS) to these nanotubes in water/ethanol system.…”

Section: Introductionmentioning

confidence: 99%

Effects of Additives on Microstructures of Titanate Based Nanotubes Prepared by the Hydrothermal Process

et al. 2009

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Silica-containing TiO 2 -derived titanate nanotubes were prepared by the addition of a small amount of tetraethyl orthosilicate (TEOS) to TiO 2 -derived titanate nanotubes prepared by the hydrothermal process and a subsequent heat-treatment at 473 K in air. The microstructure and thermal behavior of synthesized silica containing TiO 2 -derived titanate nanotubes were investigated by various methods such as X-ray diffraction (XRD), X-ray absorption fine structure (XAF), and X-ray photoelectron spectroscopy (XPS). As a result, the addition of a small amount of TEOS leaded to the improvement of the thermal stability for TiO 2 -derived titanate nanotubes. XPS results revealed that Si was combined onto the surface of TiO 2 -derived titanate nanotubes, forming partial Si-O-Ti chemical bonds. Therefore, it was inferred that the thermal stability could be modified by forming partial Si-O-Ti chemical bonds at interface of silica and TiO 2 -derived titanate nanotubes.

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Photocatalysis over binary metal oxides. Enhancement of the photocatalytic activity of titanium dioxide in titanium-silicon oxides

Cited by 212 publications

References 1 publication

Comparison of CO2 Photoreduction Systems: A Review

Comparison of CO2 Photoreduction Systems: A Review

Photocatalytic Hydrogenation on Semiconductor Particles

Effects of Additives on Microstructures of Titanate Based Nanotubes Prepared by the Hydrothermal Process

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