Fabrication and comparison of highly efficient Cu incorporated TiO2 photocatalyst for hydrogen generation from water

Xu, Shiping; Ng, Jiawei; Zhang, Xiwang; Bai, Hongwei; Sun, Darren Delai

doi:10.1016/j.ijhydene.2010.02.129

Cited by 191 publications

(103 citation statements)

References 34 publications

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“…To improve the efficiency, doped Metal/TiO 2 serves as a model for heterogeneous catalysis that has been extensively studied. Systems such as Cu/TiO 2 , 11 Pt/TiO 2 , and Au/TiO 2 (Ref. 12) exhibit energy barriers decreased by 15-19 kcal/mol relative to bare rutile TiO 2 .…”

Section: Introductionmentioning

confidence: 99%

Activation of water on the TiO2 (110) surface: The case of Ti adatoms

Miao

Liu

Wang

et al. 2012

The Journal of Chemical Physics

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Using first-principles calculations we have studied the reactions of water over Ti adatoms on the (110) surface of rutile TiO 2 . Our results provide fundamental insights into the microscopic mechanisms that drive this reaction at the atomic level and assess the possibility of using this system to activate the water dissociation reaction. In particular, we show that a single water molecule dissociates exothermically with a small energy barrier of 0.17 eV. After dissociation, both H + and OH − ions bind strongly to the Ti adatom, which serves as an effective reactive center on the TiO 2 surface. Finally, clustering of Ti adatoms does not improve the redox activity of the system and results in a slightly higher energy barrier for water dissociation.

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Section: Introductionmentioning

confidence: 99%

Activation of water on the TiO2 (110) surface: The case of Ti adatoms

Miao

Liu

Wang

et al. 2012

The Journal of Chemical Physics

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“…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. It was found that all prepared samples had excellent light absorption ability [12].…”

Section: Introductionmentioning

confidence: 93%

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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“…Over 96% of the world-wide use of titanium is in its oxide form, TiO 2 (titanium dioxide), thus creating a high demand for this material, due to a wide range of potential applications for environmental purposes [1]. It is extensively used for photo degradation of organic and inorganic pollutants [2], photovoltaic energy production [3], hydrogen production by water photo-splitting [4,5], and gas sensing [6,7]. This variety of applications is because of TiO 2 low cost, non-toxicity, as well as useful optical, physical, chemical, and electronic properties, including excellent transmittance of visible light, photo catalytic behavior, high dielectric constant, high refractive index, and high chemical stability [8,9].…”

Section: Introductionmentioning

confidence: 99%