Effect of reaction temperature and sacrificial agent on the photocatalytic H2-production of Pt-TiO2

Velázquez, J. J.; Fernández-González, Ricardo; Díaz, L.; Melián, E. Pulido; Rodrı́guez, V.D.; Núñez, Pedro

doi:10.1016/j.jallcom.2017.05.314

Cited by 78 publications

(38 citation statements)

References 32 publications

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“…Numerous are the cocatalysts coupled with TiO 2 proposed to maximize the rate of electron transfer to H + and consequently increase the overall efficiency of both water photosplitting and photoreforming. The most efficient cocatalysts are noble metals such as Pt, Au and Pd [99][100][101][102][103][104][105][106][107][108], but also materials based on Ag, Rh, Ni, Mn, Ru, Cr, and Co were proposed [109][110][111][112][113][114][115]. Furthermore, different carbon-based materials (e.g., graphene, graphene oxide, single-wall and multi-wall carbon nanotubes, carbon nanocones, graphitic-C 3 N 4 .…”

Section: Effect Of the Cocatalystmentioning

confidence: 99%

“…The main conclusion from the analysis of the scientific literature on this topic (see as an example the recent reviews [128,129]) is that it is quite difficult to generalize because the numerous modifications of the synthesis and the intrinsic differences between materials only seemingly similar can affect abruptly their photocatalytic performance, the electronic structures of the hybrids and-ultimately-the dynamics of the photogenerated charge carries. Recently, numerous Cu-containing species (Cu [105,130,131], Cu 2 O [132], CuO x [133], CuO [134], Cu(OH) 2 [135] and Cu 2 (OH) 2 CO 3 [136,137]) showed relatively high photocatalytic rate, even if a complete agreement on the operative electron transfer mechanism has not been reached yet. The complex redox speciation of the copper-based materials seems to force the ecb of TiO 2 to be delocalized on the cocatalyst and here react to produce hydrogen.…”

Section: Effect Of the Cocatalystmentioning

confidence: 99%

“…Recently, numerous Cu-containing species (Cu [105,130,131], Cu2O [132], CuOx [133], CuO [134], Cu(OH)2 [135] and Cu2(OH)2CO3 [136,137]) showed relatively high photocatalytic rate, even if a complete agreement on the operative electron transfer mechanism has not been reached yet. The complex redox speciation of the copper-based materials seems to force the ecb of TiO2 to be delocalized on the cocatalyst and here react to produce hydrogen.…”

Section: Effect Of the Cocatalystmentioning

confidence: 99%

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The Role of Surface Texture on the Photocatalytic H2 Production on TiO2

et al. 2019

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It has been often reported that an efficient and green photocatalytic dissociation of water under irradiated semiconductors likely represents the most important goal for modern chemistry. Despite decades of intensive work on this topic, the efficiency of the water photolytic process under irradiated semiconductors is far from reaching significant photocatalytic efficiency. The use of a sacrificial agent as hole scavenger dramatically increases the hydrogen production rate and might represent the classic “kill two birds with one stone”: on the one hand, the production of hydrogen, then usable as energy carrier, on the other, the treatment of water for the abatement of pollutants used as sacrificial agents. Among metal oxides, TiO2 has a central role due to its versatility and inexpensiveness that allows an extended applicability in several scientific and technological fields. In this review we focus on the hydrogen production on irradiated TiO2 and its fundamental and environmental implications.

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Section: Effect Of the Cocatalystmentioning

confidence: 99%

Section: Effect Of the Cocatalystmentioning

confidence: 99%

Section: Effect Of the Cocatalystmentioning

confidence: 99%

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The Role of Surface Texture on the Photocatalytic H2 Production on TiO2

et al. 2019

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“…Anatase TiO 2 is the best photocatalytic material due to its high abundance, low price, excellent chemical stability, and indirect band gap [ 2 , 3 , 4 ]. Therefore, TiO 2 is an important photocatalyst in organic synthesis [ 5 ] in addition to its applications in solar cells [ 6 , 7 , 8 ], photocatalytic water splitting [ 9 , 10 , 11 ], and organic pollution degradation [ 12 , 13 , 14 ]. However, the wide band gap of TiO 2 limits its uses to only the ultraviolet range, thereby resulting in the waste of a high amount of solar energy resources [ 15 ].…”

Section: Introductionmentioning

confidence: 99%

The Electronic Structure and Optical Properties of Anatase TiO2 with Rare Earth Metal Dopants from First-Principles Calculations

et al. 2018

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The electronic and optical properties of the rare earth metal atom-doped anatase TiO2 have been investigated systematically via density functional theory calculations. The results show that TiO2 doped by Ce or Pr is the optimal choice because of its small band gap and strong optical absorption. Rare earth metal atom doping induces several impurity states that tune the location of valence and conduction bands and an obvious lattice distortion that should reduce the probability of electron–hole recombination. This effect of band change originates from the 4f electrons of the rare earth metal atoms, which leads to an improved visible light absorption. This finding indicates that the electronic structure of anatase TiO2 is tuned by the introduction of impurity atoms.

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“…Many elements have been investigated in this regard, including noble elements (Au, Ag, Pt, Rh), [1][2][3][4][5] transition metals (Zn, Fe, Ni, Cu, Co), [6][7][8][9][10] rare earth elements, [11] as well as other metals. [12,13] In view of the various characteristics of metals and non-metals, co-doping with these elements has also been explored, encompassing C, N, F, S, P, B, and metal elements.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Adsorption and Photocatalysis by Introduction of C into N, Zr/TiO2

Liu¹,

Li²,

Bai³

et al. 2018

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The introduction of carbon (C) into TiO2 may facilitate charge transfer and thus improve its photocatalytic activities. In this paper, C was introduced into N, Zr/TiO2 via ultrasound and calcination using glucose as carbon precursor. The as-prepared C@N, Zr/TiO2 was characterized by SEM, TEM, XRD, UV-Vis DRS, and XPS. The adsorption abilities of the materials were evaluated using two anion dyes [methylene blue (MB) and basic violet (BV)] and two cation dyes [titan yellow (TY) and congo red (CR)] as model pollutants. The photocatalytic activities were investigated through the degradation of Ciprofloxacin (CIP) under simulated sunlight irradiation. The results revealed that the appropriate introduction of carbon may improve the adsorption abilities and the photocatalytic activities of non-carbonaceous materials. Furthermore, several samples exhibited selective adsorption abilities for cation dyes, which suggested the potential application of the as-prepared materials for the selective removal of co-existing pollutants.

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Effect of reaction temperature and sacrificial agent on the photocatalytic H2-production of Pt-TiO2

Cited by 78 publications

References 32 publications

The Role of Surface Texture on the Photocatalytic H2 Production on TiO2

The Role of Surface Texture on the Photocatalytic H2 Production on TiO2

The Electronic Structure and Optical Properties of Anatase TiO2 with Rare Earth Metal Dopants from First-Principles Calculations

Enhanced Adsorption and Photocatalysis by Introduction of C into N, Zr/TiO2

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