Influence of TiO2 and ZnO photocatalysts on adsorption and degradation behaviour of Erythrosine

Uddin, Md. Mosfeq; Hasnat, Mohammad A.; Samed, Ahmed Jalal; Majumdar, Ritajit

doi:10.1016/j.dyepig.2006.04.023

Cited by 60 publications

(32 citation statements)

References 12 publications

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“…The crystal size of m-WO 3 sample was about 8.9 nm based on the Scherrer formula. By the same method, the crystal size of WO 3 and Ag in the m-Ag/WO 3 sample was estimated to be 8.7 and 9.1 nm respectively. According to the LXRD in Fig.…”

Section: Structural Characteristicsmentioning

confidence: 99%

“…In recent years, numerous studies have been reported on semiconductor photocatalysis which can utilize solar energy to decompose harmful organic pollutants in air and aqueous systems [1][2][3][4][5]. Among the semiconductors employed, TiO 2 is the most extensively studied photocatalyst because of its low cost, high efficiency and stability.…”

Section: Introductionmentioning

confidence: 99%

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Preparation of ordered mesoporous Ag/WO3 and its highly efficient degradation of acetaldehyde under visible-light irradiation

Sun

Wang

Zeng

et al. 2010

Journal of Hazardous Materials

157

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Section: Structural Characteristicsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Preparation of ordered mesoporous Ag/WO3 and its highly efficient degradation of acetaldehyde under visible-light irradiation

Sun

Wang

Zeng

et al. 2010

Journal of Hazardous Materials

157

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“…Semiconductor photocatalysis has received increased attention due to its inherent ability to lead to complete mineralisation of organic carbon into carbon dioxide and water (Erquez & Pichat, 2006;Kaneco, Itoh, Katsumata, Suzuki, & Ohta, 2009;Kaniou, Pitarakis, Barlagianni, & Poulios, 2009;Pera-Titus, García-Molina, Baños, Giménez, & Esplugas, 2004;Rao, Sivasankar, & Sadasivam, 2005;Uddin, Hasnat, Samed, & Majumdar, 2007) without a mass transfer. Moreover, this process can be performed under ambient conditions using atmospheric oxygen as the oxidant (Chatterjee & Dasgupta, 2005).…”

Section: Introductionmentioning

confidence: 99%

Photodegradation of Chlorophenoxyacetic Acids by ZnO/r-Fe2O3 Nanocatalysts: A Comparative Study

Abdullah¹,

Mun²,

Zainal³

et al. 2013

IJC

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ZnO/γ-Fe 2 O 3 nanocomposite was synthesized via simple precipitation. The synthesized nanocatalysts underwent heat treatment at 450 o C for an hour. The characteristics of the nanocomposite were investigated by XRD, TEM, and BET surface area measurement. Zeta potential analysis was used to examine the surface charge properties of the nanocatalysts. The synthesized nanocomposite has an average particle size of 11 nm and a surface area of 20 m 2 g -1 . The potential of ZnO/γ-Fe 2 O 3 as a photocatalyst was evaluated by photodegrading chlorophenoxyacetic acids (PAA, 2,4-D, 2,4,5-T and 4CA). The decomposition of chlorophenoxyacetic acids by ZnO/γ-Fe 2 O 3 followed 4CA > 2,4,5-T ≈ 2,4-D > PAA. The result indicates the applicability of ZnO/γ-Fe 2 O 3 nanocomposite as a photocatalyst in removing organic pollutants in wastewater.

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“…The photocatalytic degradation of Acid Red 51 (C.I. 45430) has been scarcely studied by some authors Uddin et al 2007). They have shown that small concentrations of the dye could be efficiently degraded, even with visible light (Zhang et al 1997).…”

mentioning

confidence: 99%

Photocatalytic Decolorization of Commercial Acid Dyes using Solar Irradiation

Dias

Azevedo

2009

Water Air Soil Pollut

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This work investigates the solar heterogeneous photocatalytic degradation of three commercial acid dyes: Blue 9 (C.I. 42090), Red 51 (C.I. 45430), and Yellow 23 (C.I. 19140). TiO 2 P25 from Degussa was used as the photocatalyst. The dyes were completely degraded within 120 min of treatment in the following increasing order of removal rate: Blue 9 < Yellow 23 < Red 51. The photocatalytic color removal process was well described by a two-firstorder in-series reaction, followed by another firstorder reaction. Photolytic experiments showed that this process is quite inefficient and highly selective towards Red 51 only. The dyes' solution was completely decolorized and organic matter removals up to 99% were achieved with photocatalysis. The lack of selectivity and the possibility of using solar light to excite the photocatalyst are promising results regarding the feasibility of this technology.

show abstract

Influence of TiO2 and ZnO photocatalysts on adsorption and degradation behaviour of Erythrosine

Cited by 60 publications

References 12 publications

Preparation of ordered mesoporous Ag/WO3 and its highly efficient degradation of acetaldehyde under visible-light irradiation

Preparation of ordered mesoporous Ag/WO3 and its highly efficient degradation of acetaldehyde under visible-light irradiation

Photodegradation of Chlorophenoxyacetic Acids by ZnO/r-Fe2O3 Nanocatalysts: A Comparative Study

Photocatalytic Decolorization of Commercial Acid Dyes using Solar Irradiation

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