Titanium–indium oxy(nitride) with and without RuO2 loading as photocatalysts for hydrogen production under visible light from water

Kuo, Yen‐Ting; Frye, Clint D.; Ikenberry, Myles; Klabunde, Kenneth J.

doi:10.1016/j.cattod.2012.03.012

Cited by 15 publications

(5 citation statements)

References 27 publications

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“…These results confirmed that adsorbed carbon species reacted with hydrogen and a series of reactions took place, resulting in higher hydrocarbon formation as explained in Eqs. (18)- (21) in the reaction mechanism section.…”

Section: Stability Analysis Of Reused Catalystmentioning

confidence: 99%

“…Photocatalytic water splitting for H 2 generation over N-In co-doped TiO 2 -Pd nanocomposites, investigated by Sasikala et al [20] and reported higher performance in the presence of In and N metals. Similarly, Ru-In 2 O 3 /TiO 2 co-doped system was utilized for water splitting with higher H 2 production in the presence of In and Ru metals [21]. The incorporation of Cu-metal ions (Cu 0 , Cu + , Cu 2+ ) into TiO 2 allows the formation of electron trapping sites and promotes charge transfer from TiO 2 to metal ions.…”

Section: Introductionmentioning

confidence: 99%

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Photocatalytic CO2 reduction with H2 as reductant over copper and indium co-doped TiO2 nanocatalysts in a monolith photoreactor

Tahir

Amin

2015

Applied Catalysis A: General

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Section: Stability Analysis Of Reused Catalystmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Photocatalytic CO2 reduction with H2 as reductant over copper and indium co-doped TiO2 nanocatalysts in a monolith photoreactor

Tahir

Amin

2015

Applied Catalysis A: General

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“…The photocatalytic H 2 -evolution reaction was carried out in a well-shaped, double-walled quartz reactor (outer diameter 50 mm) connected to a closed gas circulation, evacuation, and cooling system [29,30]. A high-pressure 450 W Hg lamp was used as a UV-visible light irradiation source.…”

Section: Photocatalytic Hydrogen Evolution From Water Splittingmentioning

confidence: 99%

Graphene supported plasmonic photocatalyst for hydrogen evolution in photocatalytic water splitting

et al. 2014

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It is well known that the noble metal nanoparticles show active absorption in the visible region because of the existence of the unique feature known as surface plasmon resonance (SPR). Here we report the effect of plasmonic Au nanoparticles on the enhancement of the renewable hydrogen (H2) evolution through photocatalytic water splitting. The plasmonic Au/graphene/TiO2 photocatalyst was synthesized in two steps: first the graphene/TiO2 nanocomposites were developed by the hydrothermal decomposition process; then the Au was loaded by photodeposition. The plasmonic Au and the graphene as co-catalyst effectively prolong the recombination of the photogenerated charges. This plasmonic photocatalyst displayed enhanced photocatalytic H2 evolution for water splitting in the presence of methanol as a sacrificial reagent. The H2 evolution rate from the Au/graphene co-catalyst was about 9 times higher than that of a pure graphene catalyst. The optimal graphene content was found to be 1.0 wt %, giving a H2 evolution of 1.34 mmol (i.e., 26 μmolh−1), which exceeded the value of 0.56 mmol (i.e., 112 μmolh−1) observed in pure TiO2. This high photocatalytic H2 evolution activity results from the deposition of TiO2 on graphene sheets, which act as an electron acceptors to efficiently separate the photogenerated charge carriers. However, the Au loading enhanced the H2 evolution dramatically and achieved a maximum value of 12 mmol (i.e., 2.4 mmolh−1) with optimal loading of 2.0 wt% Au on graphene/TiO2 composites. The enhancement of H2 evolution in the presence of Au results from the SPR effect induced by visible light irradiation, which boosts the energy intensity of the trapped electron as well as active sites for photocatalytic activity.

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“…This was followed by irradiation using a 450 W high pressure Hg lamp via a quartz tube. Water at 20 ∘ C was circulated continuously through the outer walls of the reactor and the quartz vessel to make sure that the temperature of the reaction mixture did not exceed 35 ∘ C [40]. The activity of these catalysts for hydrogen production was investigated during the first 5 h irradiation period, using a fresh catalyst each time.…”

Section: Photocatalytic Water Splitting Experiments Using a 450 W Mermentioning

confidence: 99%

Au-TiO₂Nanocomposites and Efficient Photocatalytic Hydrogen Production under UV-Visible and Visible Light Illuminations: A Comparison of Different Crystalline Forms of TiO₂

Jose

Sorensen

Rayalu

et al. 2013

International Journal of Photoenergy

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Au (∼1 wt%) /TiO 2(anatase or rutile or P25) nanocomposites were prepared by the solvated metal atom dispersion (SMAD) method, and the as-prepared samples were characterized by diffuse reflectance UV-visible spectroscopy, powder XRD, BET surface analysis measurements, and transmission electron microscopy bright field imaging. The particle size of the embedded Au nanoparticles ranged from 1 to 10 nm. These Au/TiO 2 nanocomposites were used for photocatalytic hydrogen production in the presence of a sacrificial electron donor like ethanol or methanol under UV-visible and visible light illumination. These nanocomposites showed very good photocatalytic activity toward hydrogen production under UV-visible conditions, whereas under visible light illumination, there was considerably less hydrogen produced. Au/P25 gave a hydrogen evolution rate of 1600 mol/h in the presence of ethanol (5 volume %) under UV-visible illumination. In the case of Au/TiO 2 prepared by the SMAD method, the presence of Au nanoparticles serves two purposes: as an electron sink gathering electrons from the conduction band (CB) of TiO 2 and as a reactive site for water/ethanol reduction to generate hydrogen gas. We also observed hydrogen production by water splitting in the absence of a sacrificial electron donor using Au/TiO 2 nanocomposites under UV-visible illumination.

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Titanium–indium oxy(nitride) with and without RuO2 loading as photocatalysts for hydrogen production under visible light from water

Cited by 15 publications

References 27 publications

Photocatalytic CO2 reduction with H2 as reductant over copper and indium co-doped TiO2 nanocatalysts in a monolith photoreactor

Photocatalytic CO2 reduction with H2 as reductant over copper and indium co-doped TiO2 nanocatalysts in a monolith photoreactor

Graphene supported plasmonic photocatalyst for hydrogen evolution in photocatalytic water splitting

Au-TiO₂Nanocomposites and Efficient Photocatalytic Hydrogen Production under UV-Visible and Visible Light Illuminations: A Comparison of Different Crystalline Forms of TiO₂

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Titanium–indium oxy(nitride) with and without RuO2 loading as photocatalysts for hydrogen production under visible light from water

Cited by 15 publications

References 27 publications

Photocatalytic CO2 reduction with H2 as reductant over copper and indium co-doped TiO2 nanocatalysts in a monolith photoreactor

Photocatalytic CO2 reduction with H2 as reductant over copper and indium co-doped TiO2 nanocatalysts in a monolith photoreactor

Graphene supported plasmonic photocatalyst for hydrogen evolution in photocatalytic water splitting

Au-TiO2Nanocomposites and Efficient Photocatalytic Hydrogen Production under UV-Visible and Visible Light Illuminations: A Comparison of Different Crystalline Forms of TiO2

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Au-TiO₂Nanocomposites and Efficient Photocatalytic Hydrogen Production under UV-Visible and Visible Light Illuminations: A Comparison of Different Crystalline Forms of TiO₂