Photocatalytic partial oxidation of α-methylstyrene over TiO2 supported on zeolites

Yahiro, Hidenori; Miyamoto, Takaaki; Watanabe, Nobuyoshi; Yamaura, Hiroyuki

doi:10.1016/j.cattod.2006.07.039

Cited by 58 publications

(23 citation statements)

References 28 publications

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“…Anatase titania (TiO 2 ) has been extensively used as active photocatalyst for the decomposition of non-biodegradable environmental pollutants, photosplitting of water, and destruction of bacteria because of its activity under UV-illumination, low cost, non-toxicity, photostability and chemical and biological inertness [1][2][3][4][5]. However, low quantum efficiency, lower specific surface area, and very low adsorption capacity of fine titania powder significantly limit the photocatalysis efficiency.…”

Section: Introductionmentioning

confidence: 99%

Nanocrystalline TiO2–diatomite composite catalysts: Effect of crystallization on the photocatalytic degradation of rhodamine B

Padmanabhan

Pal

Haq

et al. 2014

Applied Catalysis A: General

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Section: Introductionmentioning

confidence: 99%

Nanocrystalline TiO2–diatomite composite catalysts: Effect of crystallization on the photocatalytic degradation of rhodamine B

Padmanabhan

Pal

Haq

et al. 2014

Applied Catalysis A: General

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“…plane(Anpo et al 1986;Carlos et al 2000;Tayade et al 2006;Yahiro et al 2007). The crystallite size was determined from XRD pattern, using Scherrer formula, t = 0·9λ/β cos θ , where t is in nm, λ the wavelength of X-ray in Å (1·5418 Å), β the FWHM in radians and θ the Bragg angle.…”

mentioning

confidence: 99%

Photocatalytic degradation of reactive black-5 dye using TiO2 impregnated ZSM-5

Mahadwad¹,

Parikh

Jasra

et al. 2011

Bull Mater Sci

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In the present study, photocatalytic degradation of reactive black-5 (RB-5) dye was investigated using supported TiO 2 photocatalyst based adsorbent as a semiconductor photocatalyst in a batch reactor. The synthesized photocatalyst composition was developed using TiO 2 as photoactive component and zeolite (ZSM-5) as the adsorbents. Attempts were also made to optimize the composition of the supported catalyst and to study the reliability of prepared catalyst. The optimum formulation of supported catalyst was found to be (TiO 2 : ZSM-5 = 0·15:1) which gave the highest efficiency with 98% degradation of 50 mg/L RB-5 solution in 90 min. Effect of different parameters such as initial concentration of dye solution, catalyst amount on the rate of photodegradation was also studied. The reduction in the chemical oxygen demand (COD, 88%) proves the mineralization of the RB-5 dye along with the colour removal. The supported TiO 2 was found to be stable for repeated use.

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“…Among many candidates for photocatalysts, TiO 2 is almost the only material suitable for this application because it has presented the most efficient photoactivity, the highest stability, and the lowest cost and nontoxicity (5)(6)(7).…”

Section: Introductionmentioning

confidence: 99%

Synthesis of nanocomposite coating based on TiO<sub>2</sub>/ZnAl layer double hydroxides

et al. 2017

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ABSTRACT:The aim of this investigation was the synthesis of nanocomposite coatings based on Zn-Al layered double hydroxides (Zn-Al LDH) and TiO 2 . The Zn-Al LDH material, which acted as the catalyst support of the active TiO 2 component (in the content of 3 and 10 wt. %), was synthesized by a low super saturation co-precipitation method. The interaction between the Zn-Al LDH and the active TiO 2 component was accomplished by using vacuum evaporation prior to the mechanical activation and only by mechanical activation. The final suspension based on Zn-Al LDH and 10wt. % TiO 2 , impregnated only by mechanical activation, showed the optimal characteristics from the aspect of particle size distribution and XRD analysis. These properties had a positive effect on the functional properties of the coatings (photocatalytic activity and self-cleaning efficiency) after the water rinsing procedure. KEYWORDS: RESUMEN: Síntesis de un revestimiento nanocompuesto basado en TiO 2 / ZnAl hidróxidos dobles en capas.El objetivo de esta investigación fue la preparación de recubrimientos de nanocompuestos basados en Zn-Al hidróxidos dobles en capas (Zn-Al LDH) y TiO 2 . El material de LDH Zn-Al, que actuaba como catalizador del componente activo TiO 2 (en el contenido de 3 y 10 en peso.%), se sintetizó por un método de co-precipitación con baja sobresaturación. La interacción entre el Zn-Al LDH y el componente activo TiO 2 se llevó a cabo mediante el uso de la evaporación al vacío antes de la activación mecánica y sólo por activación mecánica. La suspensión final basada en Zn-Al LDH y 10wt. % TiO 2 , impregnada solamente por la activación mecánica, mostró las características óptimas desde el aspecto de la distribución de tamaño de partícula y análisis de XRD. Estas propiedades tenían un efecto positivo sobre las propiedades funcionales de los revestimientos (actividad fotocatalítica y eficiencia de auto-limpieza) después del procedimiento de aclarado de agua.ORCID ID: V. Jovanov

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Photocatalytic partial oxidation of α-methylstyrene over TiO2 supported on zeolites

Cited by 58 publications

References 28 publications

Nanocrystalline TiO2–diatomite composite catalysts: Effect of crystallization on the photocatalytic degradation of rhodamine B

Nanocrystalline TiO2–diatomite composite catalysts: Effect of crystallization on the photocatalytic degradation of rhodamine B

Photocatalytic degradation of reactive black-5 dye using TiO2 impregnated ZSM-5

Synthesis of nanocomposite coating based on TiO<sub>2</sub>/ZnAl layer double hydroxides

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