Significant improvement of photocatalytic hydrogen generation rate over TiO2 with deposited CuO

Xu, Shiping; Sun, Darren Delai

doi:10.1016/j.ijhydene.2009.05.119

Cited by 248 publications

(179 citation statements)

References 31 publications

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“…Figure 7 shows XRD patterns of fresh Cu-TiO 2 catalysts. When the copper loading is more than 5 wt%, the XRD peaks corresponding to crystalline CuO were observed at 2h of 35, 58 and 66°and the intensity increased with increasing copper loading, in agreement with the literature [7,18]. CuO crystallite size analysis from XRD line broadening is difficult because of overlapping peaks between CuO and TiO 2 .…”

Section: X-ray Diffraction (Xrd) Analysissupporting

confidence: 88%

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Comparative Study on The Photocatalytic Hydrogen Production from Methanol over Cu-, Pd-, Co- and Au-Loaded TiO₂

Udani

Rønning

2015

Oil Gas Sci. Technol. – Rev. IFP Energies nouvelles

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-Photocatalytic hydrogen production from a methanol-water solution was investigated in a semi-continuous reactor over different metal-loaded TiO 2 catalysts under UltraViolet (UV) light irradiation. The catalysts were mainly prepared by the incipient wetness impregnation method by varying the metal weight ratio in the range of 1-10 wt%. The effects of metal loading and H 2 pre-treatment on the photocatalytic activity were investigated. In addition, the activity of the catalysts was also compared with a reference Au-TiO 2 catalyst from the World Gold Council (WGC). The photocatalysts were characterized by using X-Ray Diffraction (XRD) and N 2 physisorption before and after the activity measurements. The photocatalytic activity decreased in the order of Pd > Au > Cu > Co in the comparative study of Cu-TiO 2 , Co-TiO 2 , Au-TiO 2 and Pd-TiO 2 . Optimum hydrogen evolution was achieved with 5 wt% Pd-TiO 2 and 5 wt% Cu-TiO 2 .

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Section: X-ray Diffraction (Xrd) Analysissupporting

confidence: 88%

“…Some of the previous studies are summarized in Table 1, [2][3][4][5][6][7][8][9][10]. In most of the cases listed in Table 1, TiO 2 is the most widely used semiconductor for various photocatalytic applications due to its relatively low cost, abundance, stability and low toxicity.…”

Section: Introductionmentioning

confidence: 99%

Comparative Study on The Photocatalytic Hydrogen Production from Methanol over Cu-, Pd-, Co- and Au-Loaded TiO₂

Udani

Rønning

2015

Oil Gas Sci. Technol. – Rev. IFP Energies nouvelles

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“…High CuO/TiO 2 activity for methanol PR was reported by Xu and Sun [149]. The active sites for hydrogen generation were likely located at the interface rather than on the isolated CuO or TiO 2 surfaces, since no H 2 production was achieved over both the pure oxides.…”

Section: Photoreforming Of Alcoholsmentioning

confidence: 75%

“…The best performance was achieved with 1 wt% metal loading, due to the main presence of Cu(I) ions, active sites for the transfer of photogenerated electrons, whereas Cu(II) species seem to promote electron-hole recombination. Deactivation was also taken into account [149], due to poisoning by accumulation of intermediates and by reduction to the metallic state.…”

Section: Photoreforming Of Alcoholsmentioning

confidence: 99%

Hydrogen Production by Photoreforming of Renewable Substrates

Rossetti

2012

ISRN Chemical Engineering

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This paper focuses on the application of photocatalysis to hydrogen production from organic substrates. This process, usually called photoreforming, makes use of semiconductors to promote redox reactions, namely, the oxidation of organic molecules and the reduction of H + to H 2 . This may be an interesting and fully sustainable way to produce this interesting fuel, provided that materials efficiency becomes sufficient and solar light can be effectively harvested. After a first introduction to the key features of the photoreforming process, the attention will be directed to the needs for materials development correlated to the existing knowledge on reaction mechanisms. Examples are then given on the photoreforming of alcohols, the most studied topic, especially in the case of methanol and carbohydrates. Finally, some examples of more complex but more interesting substrates, such as waste solutions, are proposed.

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“…TiO 2 photo catalyst with deposited CUO was synthesized by the impregnation method using P25 as support, and exhibited high photocatalytic hydrogen generation activity from methanol/water solution. [11]. Xu et al fabricated efficient Cu incorporated TiO 2 (Cu-TiO 2 ) photo catalysts for hydrogen generation using four methods: in situ sol-gel, wet impregnation, chemical reduction of Cu salt, and in situ photo-deposition.…”

Section: Introductionmentioning

confidence: 99%

Photoelectrochemical Property, Photocatalytic Degradation and Photocatalysts for Hydrogen Productionof CUO and WO3 Loaded TiO2 Nanotube

Yang¹,

Kim²

2011

IJAPM

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Abstract-Titanium dioxide has been considered one of the most promising photocatalytic materials due to its relatively low cost, chemical stability, and photo stability. In this work, CUO and WO 3 were loaded on anodic TiO 2 annotate and the photo electrochemical, photocatalytic and photo catalysts for hydrogen production activity were investigated. TiO 2 annotate was prepared by iodization method. CUO and WO 3 were loaded by wet impregnation method. The annealed samples were soaked in a mixture solution containing tungsten acid and Cu (NO 3 ) 2 and then post-annealed to fabricate Cu-loaded TiO 2 annotate. The obtained samples were characterized by SEM, EDX, XRD and the photo electrochemical property, photocatalytic degradation of MB and photo catalysts for hydrogen production under UV illumination was measured and compared. The photocurrent (potential=1 V) of Cu-WO 3 loaded annotate is 1.41 times higher than that of unloaded annotate and is 1.15 times higher than that of pure WO 3 loaded annotate. The hydrogen generation rate of Cu-WO 3 loaded annotate is 1.42 times higher than that of unloaded annotate. After UV irradiation for 2 h, the degradation efficiency of MB for Cu-WO 3 loaded annotate is 1.12 times higher than that of pure WO 3 loaded sample.

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Significant improvement of photocatalytic hydrogen generation rate over TiO2 with deposited CuO

Cited by 248 publications

References 31 publications

Comparative Study on The Photocatalytic Hydrogen Production from Methanol over Cu-, Pd-, Co- and Au-Loaded TiO₂

Comparative Study on The Photocatalytic Hydrogen Production from Methanol over Cu-, Pd-, Co- and Au-Loaded TiO₂

Hydrogen Production by Photoreforming of Renewable Substrates

Photoelectrochemical Property, Photocatalytic Degradation and Photocatalysts for Hydrogen Productionof CUO and WO3 Loaded TiO2 Nanotube

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Significant improvement of photocatalytic hydrogen generation rate over TiO2 with deposited CuO

Cited by 248 publications

References 31 publications

Comparative Study on The Photocatalytic Hydrogen Production from Methanol over Cu-, Pd-, Co- and Au-Loaded TiO2

Comparative Study on The Photocatalytic Hydrogen Production from Methanol over Cu-, Pd-, Co- and Au-Loaded TiO2

Hydrogen Production by Photoreforming of Renewable Substrates

Photoelectrochemical Property, Photocatalytic Degradation and Photocatalysts for Hydrogen Productionof CUO and WO3 Loaded TiO2 Nanotube

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Comparative Study on The Photocatalytic Hydrogen Production from Methanol over Cu-, Pd-, Co- and Au-Loaded TiO₂

Comparative Study on The Photocatalytic Hydrogen Production from Methanol over Cu-, Pd-, Co- and Au-Loaded TiO₂