Gas-phase photocatalytic decomposition of ethylbenzene over perlite granules coated with indium doped TiO2

Hinojosa-Reyes, Mariana; Arriaga, Sonia; Dı́az-Torres, L.A.; Rodríguez-González, Vicente

doi:10.1016/j.cej.2013.01.066

Cited by 54 publications

(37 citation statements)

References 30 publications

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“…of ethyl benzene molecules onto the photocatalyst surface. It is higher than the study conducted by Hinojosa et al [6], where only 59 % of ethyl benzene is removed at the same time at room temperature, although they used perlite granules coated with indium-doped TiO2 to decompose ethyl benzene. With UV light irradiance, photocatalytic activity increased in relation to which light can penetrate to excite electron-hole pairs in catalyst coatings.…”

Section: Removal Of Ethyl Benzenecontrasting

confidence: 45%

“…These materials include aliphatic and aromatic hydrocarbons, chlorinated hydrocarbons and various ketones and aldehydes [4]. Many VOCs are toxic and some are even considered mutagenic, teratogenic [5,6] or carcinogenic (e.g., benzene, ethylbenzene, and toluene). Nevertheless, the actual health implications of most of the organic compounds found in indoor air are not presently well defined.…”

Section: Introductionmentioning

confidence: 99%

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Improvement of Indoor Air Quality by Applying LiNbO3 on Concrete

Nath

Hyder

Zain³

2017

Asian J. Chem.

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Photocatalysts in ordinary building materials such as concrete create environment-friendly materials by which air pollution can be diminished. In this study, LiNbO3-coated concrete block was used to investigate pollutant removal efficiency, wherein toluene and ethylbenzene were selected as common indoor air pollutants. The effectiveness of using immobilized LiNbO3 to remove ethylbenzene and toluene from indoor air was investigated under various operational parameters. About 80 % of toluene and 82.5 % of ethylbenzene could be removed within 6 h under ultraviolet-visible light illumination using LiNbO3 as a photocatalyst in concrete. Therefore, in the near future, LiNbO3 may be used as a sustainable construction material that could contribute to indoor air purification Keywords: Indoor air quality, LiNbO3, Photocatalytic degradation, Volatile organic compounds. Chemistry; Vol. 29, No. 12 (2017), 2692-2700 can also lead to the irritation of eyes and respiratory tract and to sensitization reactions involving the eyes, skin and lungs. The occurrence of these compounds in the atmosphere therefore poses a great threat to human health and the environment. Many air-purification methods are available in the literature. Existing technologies such as incineration, absorption, adsorption, and condensation ionization for controlling emissions and improving air quality are not very satisfactory because they degrade air quality [12,13]. Although filtration is the most widely used method because of its low cost and high pollutant removal effectiveness, older air filters have been associated with health issues, increased pollutant concentration and reduced work performance. Systems that are passive, cost effective and work along with existing air handling systems to reduce loading and increase overall energy efficiency are always necessary to develop [14]. One such area that has been widely explored is the use of materials that can be embedded or coated on walls and wall boards that can passively and effectively destroy indoor concentrations of pollutants [15]. Photocatalysis is a very exciting topic in the innovation of the cement industry with sustainable solutions. These innovative products have been developed to provide an environment-friendly solution in the construction industry and are becoming widely recognized for green constructions [16]. A broad utilization of white photocatalytic materials in concrete could enable the reduction of environmental pollution, thereby improving air quality. Asian Journal of

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Section: Removal Of Ethyl Benzenecontrasting

confidence: 45%

Section: Introductionmentioning

confidence: 99%

Improvement of Indoor Air Quality by Applying LiNbO3 on Concrete

Nath

Hyder

Zain³

2017

Asian J. Chem.

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“…These particles are mostly nearly spherical to cube in shape. [27,28] have shown that doping constrains the growth of oxide particles and thus smaller particles with higher surface area are obtained. However, this study shows otherwise, i.e., increment in the average particle size and a decrement in surface area and pore size upon Na doping.…”

Section: Surface Characterizationsmentioning

confidence: 99%

Transesterification of palm cooking oil using barium-containing titanates and their sodium doped derivatives

Chew

Tan

Bakar

et al. 2016

Int J Energy Environ Eng

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BaTiO 3 , Ba 2 NiTi 5 O 13 and their Na-doped analogues were successfully synthesized via sol-gel and calcination methods. The surface properties of the prepared catalysts were characterized by scanning electron microscopy and nitrogen adsorption-desorption analysis while the basicity was determined by benzoic acid titration. The catalytic activity of the Ba-based catalysts was verified in transesterification of palm cooking oil with methanol. The optimization study was conducted by varying the oil:-methanol ratio, catalyst loading, reaction temperature and duration. The highest methyl ester (ME) yield was *95% for 5 wt/v% Na-Ba 2 NiTi 5 O 13 at a methanol to oil ratio of 12:1 at 150°C for 2 h.

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“…TiO2 can be strongly attached to the perlite surface with Ti-O-Si bonds effectively, hence, stable photocatalysts could be developed. Expanded perlite, has been widely used as photocatalyst support in recently published works in order to photocatalytic degradation of different pollutant like ammonia [2,3], sulfamethoxazole [4], ethylbenzene [5], phenol [6,7], and furfural [8]. None of them investigated the effect of preparation conditions onto degradation efficiency by any experimental design approach.…”

Section: Introductionmentioning

confidence: 99%

PREPARATION OF TiO2/PERLITE COMPOSITES BY USING 23-1 FRACTIONAL FACTORIAL DESIGN

Duranoğlu¹

2016

J. Turk. Chem. Soc., Sect. A: Chem.

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Successive impregnation and calcination processes were performed in order to produce TiO2/perlite composites. 2 3-1 fractional factorial design was first applied to optimize the production conditions of TiO2/perlite photocatalysts. Seven TiO2/perlite composites (including three central point experiments) were produced by manipulating three process parameters (amount of TiO2 used in impregnation process, particle size of perlite and calcination temperature). Prepared TiO2/perlite photocatalysts were characterized by XRay Diffraction Spectrometry and SEM. XRD patterns indicated that anatase was the main crystalline phase for all produced samples. Degradation capacities of produced TiO2/perlite composites were investigated in methylene blue degradation process. The linear models of TiO2 loading (%) and methylene blue degradation (%) of TiO2/perlite composites were developed by regression analysis of the experimental data. As a result of analysis of variance, it was found that developed models were statistically significant with the p-value of 0.0040 and 0.0003, for TiO2 loading (%) and methylene blue degradation (%), respectively. According to the coefficient of determination (0.9821 and 0.9970 for the models of TiO2 loading and methylene blue degradation, respectively) and error analysis, developed models fit well to the experimental data. Effect of process parameters was investigated by using response surface plots. Amount of TiO2 and particle size were found as the most effective parameters on both TiO2 loading (%) and degradation efficiency (%). Calcination temperature did not affect TiO2 loading but methylene blue degradation capacity.

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Gas-phase photocatalytic decomposition of ethylbenzene over perlite granules coated with indium doped TiO2

Cited by 54 publications

References 30 publications

Improvement of Indoor Air Quality by Applying LiNbO3 on Concrete

Improvement of Indoor Air Quality by Applying LiNbO3 on Concrete

Transesterification of palm cooking oil using barium-containing titanates and their sodium doped derivatives

PREPARATION OF TiO2/PERLITE COMPOSITES BY USING 23-1 FRACTIONAL FACTORIAL DESIGN

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