Raschig rings-Fe2O3 composite photocatalyst activate in the degradation of 4-chlorophenol and Orange II under daylight irradiation

Bandara, Jayasundera; Klehm, U.; Kiwi, J.

doi:10.1016/j.apcatb.2007.05.007

Cited by 137 publications

(64 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…It can be seen that during the first 60 min of irradiation the concentration decreases linearly with time and thus the initial degradation rate R i (mol s -1 m -2 ) were calculated from the slope (dc/dt) t=60 min . Azo dye AO7 has been recently used as a model dye for tests of immobilized photocatalysts [18][19][20]. Similarly as in the present work the observed kinetics was zero order for either particulate [21] or transparent sol-gel TiO 2 film [20].…”

Section: Methods Of Film Immobilizationmentioning

confidence: 57%

Photocatalytic Degradation of Acid Orange 7 on TiO2 Films Prepared from Various Powder Catalysts

2009

View full text Add to dashboard Cite

The advantage of using particulate layers in water and air cleaning is in the combination of two important features in photocatalysis: high surface area of powder particles and immobilization of photocatalyst. The present paper deals with the preparation of particulate TiO 2 layers using three different techniques: sedimentation, electrophoresis and dip-coating and different particulate photocatalyst namely P25 (Degussa) and anatase Ti1 and Ti2 of Czech production. Photocatalytic activity was tested using an aqueous solution of a model azo-dye Acid Orange 7. It was found that the method of preparation has not a significant impact on the photocatalytic properties of resulting layer. Surprisingly the immobilized powder with the lowest surface area and crystal size around 170 nm exhibit the best photocatalytic performance.

show abstract

Section: Methods Of Film Immobilizationmentioning

confidence: 57%

Photocatalytic Degradation of Acid Orange 7 on TiO2 Films Prepared from Various Powder Catalysts

2009

View full text Add to dashboard Cite

show abstract

“…1 and 2. [41][42][43][44][45]. However, with higher concentrations of H 2 O 2 , the dye degradation efficiency is found decrease due to the behavior of H 2 O 2 molecules to act as h ?…”

Section: Figure 10mentioning

confidence: 87%

Soft synthesis of potassium co-doped Al–ZnO nanocomposites: a comprehensive study on their visible-light driven photocatalytic activity on dye degradation

2016

View full text Add to dashboard Cite

The present work reports on the, first of its kind, synthesis of potassium codoped aluminum-doped ZnO nanoparticles (NPs) through thermo-sol gelation process. The co-doping of K on Al-ZnO NPs is found having a significant influence on the band gap narrowing of ZnO, to an extent that the entire light absorption is shifted towards the visible-light spectrum. The synthesized NPs are characterized using, XRD, TEM, SEM, EDX, UV-Vis-DRS, BET surface area analysis, TG/DTA, PL, and ICP-OES. The band gap energy levels for bare ZnO, Al-doped ZnO, and K co-doped Al-ZnO NPs are 3.26, 3.03 and 2.88 eV, respectively. A systematic study has been carried to evaluate the photocatalytic properties of K co-doped Al-ZnO photocatalyst through Direct Green 6 (a textile dye) degradation studies, and has been compared with well-known Al-ZnO NPs. The effect of various operational parameters such as, co-dopant/dopant stoichiometry, solution pH, catalyst dosage, dye concentration, kinetics, photosensitizers, light intensity, and matrix tolerance, on the dye degradation, has been systematically evaluated. The analytical data reveal that under optimized conditions, the K co-doped Al-ZnO photocatalyst can induce complete dye degradation within 0.5 h under visible light. A comprehensive mechanism has been proposed on the photocatalytic activity of K-Al-ZnO NPs.

show abstract

“…Furthermore, to the characteristic diffraction peaks (Fig. 8) [36]. The catalytic activity of the Ni ferrite ionic liquid TiO 2 nanocomposite was investigated by monitoring the reduction of 2-nitroaniline in the presence of NaBH 4 in an aqueous solution, at room temperature.…”

Section: Resultsmentioning

confidence: 99%

Efficient Catalytic Activity of Ionic Liquid-Supported NiFe2O4 Magnetic Nanoparticle Doped Titanium Dioxide Nano-Composite

Arumugam¹,

Redhi²,

Gengan³

2016

IJCEA

View full text Add to dashboard Cite

Raschig rings-Fe2O3 composite photocatalyst activate in the degradation of 4-chlorophenol and Orange II under daylight irradiation

Cited by 137 publications

References 22 publications

Photocatalytic Degradation of Acid Orange 7 on TiO2 Films Prepared from Various Powder Catalysts

Photocatalytic Degradation of Acid Orange 7 on TiO2 Films Prepared from Various Powder Catalysts

Soft synthesis of potassium co-doped Al–ZnO nanocomposites: a comprehensive study on their visible-light driven photocatalytic activity on dye degradation

Efficient Catalytic Activity of Ionic Liquid-Supported NiFe2O4 Magnetic Nanoparticle Doped Titanium Dioxide Nano-Composite

Contact Info

Product

Resources

About