Quantum yield with platinum modified TiO2 photocatalyst for hydrogen production

Escobedo, Salvador; Rosales, Benito Serrano; Lasa, Hugo de

doi:10.1016/j.apcatb.2013.04.016

Cited by 76 publications

(37 citation statements)

References 46 publications

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“…This observation, combined with the concurrent formation of acetaldehyde at short irradiation times, One can notice in Figure 16 the formation of CO 2 even at the early stages of irradiation. This observation, combined with the concurrent formation of acetaldehyde at short irradiation times, points towards a series-parallel network for the photoconversion of water and air pollutants as reported by our research group in earlier studies [5,9].…”

Section: Ch Cooh + 4h C H Oh + H O →mentioning

confidence: 59%

“…An incipient wetness impregnation technique can be used to prepare a modified Pt-TiO 2 photocatalyst [5]. The material utilized as a support was a Degussa P25 semiconductor of titanium dioxide (TiO 2 ) from Evonik Degussa Co. (Essen, Germany).…”

Section: Incipient Wetness Impregnation Methodsmentioning

confidence: 99%

“…These changes of ethanol with irradiation time are reported for the various Pt-doped photocatalysts of the present study. points towards a series-parallel network for the photoconversion of water and air pollutants as reported by our research group in earlier studies [5,9]. Furthermore, and to establish the total amount of CO2 at every stage of the irradiation process, vapour-liquid equilibrium calculations for CO2 shall be considered, as described in Appendix E. Figure 17 reports the ethanol scavenger concentration changes in the liquid phase with radiation time.…”

Section: Ch Cooh + 4h C H Oh + H O →mentioning

confidence: 99%

“…Nowadays, TiO 2 is the most widely used photocatalyst due to its photocatalytic activity, chemical stability in aqueous solutions and favourable band gap energy (3.20 eV in anatase) [5]. However, new materials such as modified TiO 2 combined with noble metals are gaining importance in hydrogen production because of the reported reduced band gaps [1,2,6,7].…”

Section: Introductionmentioning

confidence: 99%

“…These • OH radicals may be consumed by ethanol at 1.00-2.00% v/v concentrations. The efficiency of the photocatalytic process can be enhanced by the addition of so-called sacrificial reagents (i.e., ethanol, methanol) [5][6][7]. Ethanol is an attractive organic renewable scavenger that can be produced from sugars or agricultural waste fermentation processes at a low cost.…”

Section: Introductionmentioning

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: Ch Cooh + 4h C H Oh + H O →mentioning

confidence: 59%

Section: Incipient Wetness Impregnation Methodsmentioning

confidence: 99%

Section: Ch Cooh + 4h C H Oh + H O →mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

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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Hydrogen as Sustainable and Green Energy Resource

Dutta

2018

Kirk-Othmer Encyclopedia of Chemical Technology

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Hydrogen is a clean fuel that can be used as the major energy resource. Hydrogen can be produced from various renewable and sustainable sources. Cost of hydrogen is high when it is produced from alternative sources. Hydrogen can be utilized as an energy source when it can be produced from cheap and renewable source. Emphasis should be given to those methods that have a low CO 2 footprint. Purification, transportation, and storing are important aspects that can be emphasized. Hydrogen is used as fuel in internal combustion engine ( ICE ) and fuel cell electric vehicle ( FCEV ). The cost of FCEV is higher than car with ICE . However, the FCEVs have more fuel efficiency than ICE car. Suitable materials should be developed for storing hydrogen in both liquid and compressed gas form. Lightweight, high mechanical strength, and low‐cost materials are preferred for this purpose. Safety issues should be taken care for production, fueling, and transportation systems.

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Photocatalytic Hydrogen Evolution

Kheradmand¹,

Zhu²,

Gu³

et al. 2021

Solar‐to‐Chemical Conversion

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she has been a professor at the school of chemistry and biochemistry of Yeungnam University in Gyeongbuk. Her research interests are in the area of renewable energy, particularly focused on hydrogen production from photo-and thermal-catalysis using various nanomaterials. She has, to date, published more than 250 papers on energy and environment-related topics in peer-reviewed SCI(E) journals. In addition, she has received numerous academic awards, including the Gyeongbuk Science and Technology Award (the Women's S & T Award) in 2015. She served as a member of

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Quantum yield with platinum modified TiO2 photocatalyst for hydrogen production

Cited by 76 publications

References 46 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

Hydrogen as Sustainable and Green Energy Resource

Photocatalytic Hydrogen Evolution

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