Photocatalytic hydrogen production from degradation of glucose over fluorinated and platinized TiO2 catalysts

Iervolino, Giuseppina; Vaiano, Vincenzo; Murcia, Julie J.; Rizzo, Luigi; Ventre, Giovanni; Pepe, Giacomo; Campiglia, Pietro; Hidalgo, M.C.; Navı́o, J.A.; Sannino, Diana

doi:10.1016/j.jcat.2016.03.032

Cited by 73 publications

(36 citation statements)

References 38 publications

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“…The band gap values were also calculated from the UV-Vis DR spectra and it was observed that this value slightly decreases after fluorination and platinization ( Table 1). It is important to comment that fluorinated and platinized Titania lab prepared materials have been studied in different photocatalytic processes previously reported [21,26], for these studies different series of samples have been prepared and characterized almost twice, and the spectra and results the obtained in band gap values are the same as those reported in the present work, these data ensure the reliability of the results reported in the present manuscript. Figure 3 shows selected TEM images for the platinized samples and the Pt particle size distribution, in these figures the Pt nanoparticles can be identified as small black dots.…”

Section: Photocatalystssupporting

confidence: 82%

“…(i) On one side, the anchorage of fluorine ions by replacing OH − groups on the Titania surface has a protective effect over the surface of this oxide during the treatment at high temperatures, it is because fluorine ions are not eliminated from surface even after 650 • C, as it was observed in the present work and other research previously reported [21,26], thus preventing the sinterization of titania particles and therefore the Rutile phase formation, as it widely known the transition of Anatase to Rutile phase takes place at temperatures above 600 • C in a typical bare Titania surface without protection.…”

Section: Photocatalystssupporting

confidence: 59%

“…As TiO 2 is the most recognized and employed material in photocatalysis, many efforts have been devoted to improve its effectiveness; thus, noble metal addition [11,18], non-metals doping [19,20], sulfation and fluorination [4,[21][22][23][24][25][26][27][28][29][30] among others have been reported to be suitable alternatives for titania modification. Taking into account that the practical application of TiO 2 is not in the form of dispersions, many studies in this area have been also focused on supported TiO 2 being photolyzed in the presence of a pollutant during a continuous cleaning process [14,16,28,31,32], in these processes the separation of the pollutant from the processed solution at the end of the process it is not necessary.…”

Section: Introductionmentioning

confidence: 99%

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Fluorinated and Platinized Titania as Effective Materials in the Photocatalytic Treatment of Dyestuffs and Stained Wastewater Coming from Handicrafts Factories

et al. 2019

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In this study, commercial and lab-prepared TiO2 were modified by fluorination and platinum photodeposition; and the effect of these modifications over the physicochemical and photocatalytic properties of TiO2 was evaluated. It was found that F and Pt addition leads to the modification of the optical and textural properties of TiO2. The materials prepared were tested in the photocatalytic degradation of different organic dyestuffs such as methylene blue (MB) and methyl orange (MO); the degradation of commercial anilines employed in the staining of natural fibers was also evaluated. Photocatalysis was also studied in this work as an eco-friendly treatment of wastewater coming from handicrafts factories. In general it was observed that the effectiveness of the photocatalytic treatment strongly depends on the substrate to be degraded, thus, fluorinated and platinized commercial Titania (Pt-F-P25) showed the best photocatalytic performance in the MB and MO photodegradation and in contrast, in the case of the anilines the highest degradation was obtained over commercial TiO2 fluorinated (F-P25). These results can be explained by differences observed in the structure and in the adsorption of these dyestuffs over the photocatalysts surfaces. F-P25 photocatalyst also demonstrated to be the best material for the treatment of real wastewater coming from handicrafts factories.

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Section: Photocatalystssupporting

confidence: 82%

Section: Photocatalystssupporting

confidence: 59%

Section: Introductionmentioning

confidence: 99%

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Fluorinated and Platinized Titania as Effective Materials in the Photocatalytic Treatment of Dyestuffs and Stained Wastewater Coming from Handicrafts Factories

et al. 2019

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“…Later, renewable biomass derived compounds were investigated, such as ethanol and glycerol [1,3,10,[12][13][14], or, more recently, glucose and other mono-or oligo-saccharides [15][16][17][18][19][20][21][22][23][24][25][26]. Few examples of direct photoreforming of cellulose or raw biomass have been also attempted, but with much lower hydrogen productivity with respect to simpler molecules [27][28][29].…”

Section: -Introductionmentioning

confidence: 99%

Design of efficient photocatalytic processes for the production of hydrogen from biomass derived substrates

Ramis

Bahadori

Rossetti

2021

International Journal of Hydrogen Energy

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The photoreforming of glucose has been studied over TiO2 photocatalyst with different photoreactors, focusing on the effect of the reaction conditions: temperature, pressure, catalyst and substrate concentration. The effect of pressure was particularly significant, decreasing hydrogen evolution rate, but improving the conversion of the substrate. Furthermore, pressure moderately higher than ambient allowed to operate at high temperature (80°C), boosting hydrogen productivity. Most experiments were carried out on glucose photoreforming, but, for the first time, the photoconversion of levulinic acid was investigated, as an interesting product of biomass hydrolysis under harsh conditions.

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“…The optimization of the degradation of organic pollutants in an actual confectionery wastewater was performed using single-variable studies [4,[27][28][29][30][31]. However, it is difficult to predict the optimum reaction conditions from previous results owing to the possible interactions between different independent variables involved in the photocatalytic reactions [10,17,22,30].…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic Treatment of An Actual Confectionery Wastewater Using Ag/TiO2/Fe2O3: Optimization of Photocatalytic Reactions Using Surface Response Methodology

Lin

Mehrvar

2018

Catalysts

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Titanium dioxide (TiO 2 ) photocatalysis is one of the most commonly studied advanced oxidation processes (AOPs) for the mineralization of deleterious and recalcitrant compounds present in wastewater as it is stable, inexpensive, and effective. Out of all, doping with metal and non-metals, and the heterojunction with another semiconductor were proven to be efficient methods in enhancing the degradation of organic pollutants under ultraviolet (UV) and visible light. However, complex degradation processes in the treatment of an actual wastewater are difficult to model and optimize. In the present study, the application of a modified photocatalyst, Ag/TiO 2 /Fe 2 O 3 , for the degradation of an actual confectionery wastewater was investigated. Factorial studies and statistical design of experiments using the Box-Behnken method along with response surface methodology (RSM) were employed to identify the individual and cross-factor effects of independent parameters, including light wavelength (nm), photocatalyst concentration (g/L), initial pH, and initial total organic carbon (TOC) concentration (g/L). The maximum TOC removal at optimum conditions of light wavelength (254 nm), pH (4.68), photocatalyst dosage (480 mg/L), and initial TOC concentration (11,126.5 mg/L) was determined through the numerical optimization method (9.78%) and validated with experimental data (9.42%). Finally, the first-order rate constant with respect to TOC was found to be 0.0005 min −1 with a residual value of 0.998.

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Photocatalytic hydrogen production from degradation of glucose over fluorinated and platinized TiO2 catalysts

Cited by 73 publications

References 38 publications

Fluorinated and Platinized Titania as Effective Materials in the Photocatalytic Treatment of Dyestuffs and Stained Wastewater Coming from Handicrafts Factories

Fluorinated and Platinized Titania as Effective Materials in the Photocatalytic Treatment of Dyestuffs and Stained Wastewater Coming from Handicrafts Factories

Design of efficient photocatalytic processes for the production of hydrogen from biomass derived substrates

Photocatalytic Treatment of An Actual Confectionery Wastewater Using Ag/TiO2/Fe2O3: Optimization of Photocatalytic Reactions Using Surface Response Methodology

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