Photocatalytic hydrogen production using mesoporous TiO2 doped with Pt

Guayaquil‐Sosa, Jesus Fabricio; Rosales, Benito Serrano; Valadés-Pelayo, Patricio J.; Lasa, Hugo de

doi:10.1016/j.apcatb.2017.04.029

Cited by 255 publications

(123 citation statements)

References 45 publications

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“…A diversity of Pt-TiO 2 photocatalysts are evaluated, showing the criticality of the preparation method. This is important to achieve the 22% high quantum yield reported by Guayaquil-Sosa et al [8]. We are not aware of comparable results reported in the technical literature until today.…”

Section: Introductionmentioning

confidence: 52%

“…These sites act as electron reservoirs on the photocatalyst inner surface. This approach for enhanced hydrogen production over mesoporous TiO 2 doped with Pt was recently reported by Guayaquil-Sosa et al [8]. …”

Section: Quantum Efficienciesmentioning

confidence: 99%

“…Platinum was added on the outer surface of the TiO 2 particles by employing a 99.90 wt % H 2 PtCl 6 xH 2 O reagent from Sigma-Aldrich Co. (St. Louis, MO, USA). Furthermore, the modified Pt-TiO 2 photocatalyst was fully characterized as presented in Guayaquil-Sosa et al [8]. This prepared material was used as a reference, for assessing the performance of two other synthesized photocatalysts of the present study.…”

Section: Incipient Wetness Impregnation Methodsmentioning

confidence: 99%

“…In the case of hydrogen production, a Quantum Yield (QY) can be defined as the ratio between the number of generated chemical species molecules and the number of photons absorbed by the photocatalysts [8,9]: QY = number of produced molecules number of photons absorbed by catalyst (1) or…”

Section: Quantum Efficienciesmentioning

confidence: 99%

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Hydrogen Production via Water Dissociation Using Pt–TiO2 Photocatalysts: An Oxidation–Reduction Network

et al. 2017

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Several TiO 2 based semiconductors with different Pt loadings are prepared using incipient impregnation, wet impregnation and the sol-gel method. These photocatalysts are evaluated in the Photo-CREC-Water II Photoreactor for hydrogen production via water dissociation, using an organic renewable scavenger (ethanol). Results obtained show the influence of the photocatalyst preparation in the production of hydrogen and in the observed quantum yields. Furthermore, it is established that the reaction networks leading to hydrogen production, using various photocatalysts, share common features. This analysis is developed by both identifying and quantifying different chemical species and their changes with irradiation time. Key species in this oxidation-reduction network are hydrogen, hydrogen peroxide, ethanol, methane, ethane, acetaldehyde and carbon dioxide. On this basis, it is shown that under an inert gas atmosphere, ethanol consumption is sub-stoichiometric. This points towards simultaneous ethanol consumption and the formation of the ethanol scavenger.

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Section: Introductionmentioning

confidence: 52%

Section: Quantum Efficienciesmentioning

confidence: 99%

Section: Incipient Wetness Impregnation Methodsmentioning

confidence: 99%

Section: Quantum Efficienciesmentioning

confidence: 99%

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Hydrogen Production via Water Dissociation Using Pt–TiO2 Photocatalysts: An Oxidation–Reduction Network

et al. 2017

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“…Figure 4 illustrates the X-ray diffraction (XRD) patterns of both experimental thin films, with the peak at the diffraction angle (2θ) of 25.0°. In addition, the analysis results revealed The bandgap energy (E g ) is calculated from the linear relationship of hνα 1/2 against hν with extrapolation to zero, which is referred to as the Tauc plot and can be expressed as [13,19], where h is Plank's constant (eV), ν is the frequency of vibration, α is the absorption coefficient, A is a proportional constant, and E g is the bandgap energy (eV). Figure 5 illustrates the Tauc plots of both experimental thin films, in which the dotted lines intercepted the x-axis (hν-intercept) at 3.19 and 3.22 eV for the SG-TiO 2 and SP-TiO 2 thin films, respectively.…”

Section: Physical Characteristics Of the Sg-and Sp-tio 2 Thinmentioning

confidence: 99%

E. coli Bacteriostatic Action Using TiO₂ Photocatalytic Reactions

Rojviroon

Sirivithayapakorn

2018

International Journal of Photoenergy

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This experimental research comparatively investigates the Escherichia coli (E. coli) bacterial inactivation of the TiO 2 photocatalytic thin films fabricated by the sol-gel dip-coating (SG) and low-temperature spray-coating (SP) techniques, with low-intensity (12 μW·cm . Moreover, the essential physical characteristics of the SG-TiO 2 and SP-TiO 2 photocatalytic thin films were determined prior to the experimental bacterial inactivation. The findings showed that both photocatalytic thin films possessed the ideal physical characteristics, especially the SP-TiO 2 thin film. In addition, the viable cell counts, the cell morphology, and the bioluminescence-based adenosine triphosphate (ATP) indicated that both SG-TiO 2 and SP-TiO 2 thin films under UVA could effectively inhibit the proliferation of the E. coli cells in both NB and 0.85% NaCl.

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Spray‐Dried TiO₂(B)‐Containing Photocatalytic Glass‐Ceramic Nanobeads

Zandonà

Arias

Gutbrod

et al. 2020

Adv Funct Materials

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Glass‐ceramic nanospheres of molar composition 0.83 SiO2 · 0.17 TiO2 are produced by the sol‐gel spray‐drying method followed by controlled heat treatments up to 1200 °C. TiO2(B) and anatase nanocrystals are precipitated in the glassy matrix: the latter phase gradually predominates with increasing ceramization temperature and time, in parallel to an overall increase in crystal sizes. The nanospheres exhibit evident photocatalytic activity under UV‐A irradiation, especially at annealing stages involving a comparatively higher amount of TiO2(B) and smaller crystals. The occurrence of TiO2(B) in this simplified binary glass‐ceramic material underlines the key role of this phase in the dynamics of crystallizing TiO2‐bearing silicate melts.

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Photocatalytic hydrogen production using mesoporous TiO2 doped with Pt

Cited by 255 publications

References 45 publications

Hydrogen Production via Water Dissociation Using Pt–TiO2 Photocatalysts: An Oxidation–Reduction Network

Hydrogen Production via Water Dissociation Using Pt–TiO2 Photocatalysts: An Oxidation–Reduction Network

E. coli Bacteriostatic Action Using TiO₂ Photocatalytic Reactions

Spray‐Dried TiO₂(B)‐Containing Photocatalytic Glass‐Ceramic Nanobeads

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Photocatalytic hydrogen production using mesoporous TiO2 doped with Pt

Cited by 255 publications

References 45 publications

Hydrogen Production via Water Dissociation Using Pt–TiO2 Photocatalysts: An Oxidation–Reduction Network

Hydrogen Production via Water Dissociation Using Pt–TiO2 Photocatalysts: An Oxidation–Reduction Network

E. coli Bacteriostatic Action Using TiO2 Photocatalytic Reactions

Spray‐Dried TiO2(B)‐Containing Photocatalytic Glass‐Ceramic Nanobeads

Contact Info

Product

Resources

About

E. coli Bacteriostatic Action Using TiO₂ Photocatalytic Reactions

Spray‐Dried TiO₂(B)‐Containing Photocatalytic Glass‐Ceramic Nanobeads