Photocatalytic degradation of azo-dyes reactive black 5 and reactive yellow 145 in water over a newly deposited titanium dioxide

Aguedach, Abdelkahhar; Brosillon, Stéphan; Morvan, J.; Lhadi, El Kbir

doi:10.1016/j.apcatb.2004.10.009

Cited by 193 publications

(101 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Hydrogen peroxide, in low concentrations, enhances the degradation of compounds due to a more efficient generation of hydroxyl radical and inhibition of electron-hole pair recombination (Saggioro et al 2011;Prado et al 2008;Aguedach et al 2005). Moreover, the solution phase may, at times, be oxygen starved, due to either oxygen consumption or slow oxygen mass transfer.…”

Section: Effect Of Oxidizing Agentmentioning

confidence: 99%

Parameters affecting the photocatalytic degradation of dyes using TiO2: a review

2015

View full text Add to dashboard Cite

Traditional chemical, physical and biological processes for treating wastewater containing textile dye have such disadvantages as high cost, high energy requirement and generation of secondary pollution during treatment process. The advanced oxidation processes technology has been attracting growing attention for the decomposition of organic dyes. Such processes are based on the light-enhanced generation of highly reactive hydroxyl radicals, which oxidize the organic matter in solution and convert it completely into water, CO 2 and inorganic compounds. In this presentation, the photocatalytic degradation of dyes in aqueous solution using TiO 2 as photocatalyst under solar and UV irradiation has been reviewed. It is observed that the degradation of dyes depends on several parameters such as pH, catalyst concentration, substrate concentration and the presence of oxidants. Reaction temperature and the intensity of light also affect the degradation of dyes. Particle size, BETsurface area and different mineral forms of TiO 2 also have influence on the degradation rate.

show abstract

Section: Effect Of Oxidizing Agentmentioning

confidence: 99%

Parameters affecting the photocatalytic degradation of dyes using TiO2: a review

2015

View full text Add to dashboard Cite

show abstract

“…Pozzo et al [7] have also discussed the importance of catalyst supports and opined that there is an inverse relationship between the adhesion of a catalyst to a support and its photocatalytic activity. There are only a few reports (including patents) on the use of paper as a catalyst support [1,4,8,9].…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic paper using zinc oxide nanorods

Baruah

Jaisai

Imani

et al. 2010

Science and Technology of Advanced Materials

112

View full text Add to dashboard Cite

Zinc oxide (ZnO) nanorods were grown on a paper support prepared from soft wood pulp. The photocatalytic activity of a sheet of paper with ZnO nanorods embedded in its porous matrix has been studied. ZnO nanorods were firmly attached to cellulose fibers and the photocatalytic paper samples were reused several times with nominal decrease in efficiency. Photodegradation of up to 93% was observed for methylene blue in the presence of paper filled with ZnO nanorods upon irradiation with visible light at 963 Wm -2 for 120 min. Under similar conditions, photodegradation of approximately 35% was observed for methyl orange. Antibacterial tests revealed that the photocatalytic paper inhibits the growth of Escherichia coli under room lighting conditions.

show abstract

“…It may be attributed to the fact that the TiO 2 NP itself can remove organic dye in addition to the increased surface area. [29][30][31][33][34][35]37,38,[45][46][47][48][49][50] Results for trace metals removal Following the procedures listed under the "Material and methods" section, the results of the three hybrid samples for trace metals removal were obtained using ICP-MS, and the results are shown in Table 2. For each hybrid sample, six tubes of filtered solution were collected and the sum of the adsorption rate from the six tubes gives the total adsorption rate of each sample regarding that trace metal.…”

Section: Structural Characterization Resultsmentioning

confidence: 99%

“…It can also disinfect bacteria like Escherichia coli and remove organic dyes. [28][29][30][31][32][33][34][35][36][37] TiO 2 is also a good removal material for heavy metals, especially chromium (Cr), arsenic (As), cadmium (Cd), copper (Cu), and lead (Pb). The ability to remove toxic compounds of TiO 2 NP together with the ability to adsorb on the large surface area and uniform pores of MCM-48 can be combined to make a great material for water purification.…”

Section: Introductionmentioning

confidence: 99%

Development and characterization of a hybrid mesoporous material infused with metallic oxide nanoparticles for water treatment

Deksissa

2017

Nanomaterials and Nanotechnology

View full text Add to dashboard Cite

In the current study, a hybrid mesoporous material infused with metallic oxide nanoparticles, MCM-48 with TiO 2 nanoparticles, has been developed for potential application in water treatment. MCM-48 belongs to a family of mesoporous siliceous materials-M41S, in which MCM-48 has a unique three-dimensional cubic symmetry structure. Using this hybrid approach, it will allow the polluted water to pass through the strong yet high permeable structure of mesoporous material and to allow enough time for the pollutants to react with the metallic oxide nanoparticles infused on the porous structure so that the polluted water can be treated without introducing secondary pollutants. A modified hydrothermal method has been developed to synthesize three samples of this hybrid material with TiO 2 nanoparticles of 15, 50, and 300 nm in diameter, respectively. The microstructures before and after the infusion of nanoparticles are characterized using scanning electron microscope and X-ray powder diffraction. Under the current study, the synthesized samples are tested for their capability of removing organic dye and trace metals. The results have shown that while all three hybrid materials have shown over 80% adsorption rate for organic dye, the sample synthesized using 300 nm TiO 2 nanoparticle has shown the highest adsorption rate. Similarly, the highest adsorption rate for most trace metals tested here also occurs in the sample made with 300 nm TiO 2 nanoparticle. Coincidently, the sample prepared with 300 nm TiO 2 nanoparticle has a much larger internal surface area and smaller average pore size compared to the two other samples, which may lead to the higher adsorption rate of trace metals and organic dye tested here. This study has presented a hybrid mesoporous material that can be potentially used for pollutants removal in water treatment. Future study is needed to investigate how to reuse this hybrid mesoporous material and to obtain a further understanding of the mechanism affecting the micro structures of the hybrid material.

show abstract

Photocatalytic degradation of azo-dyes reactive black 5 and reactive yellow 145 in water over a newly deposited titanium dioxide

Cited by 193 publications

References 36 publications

Parameters affecting the photocatalytic degradation of dyes using TiO2: a review

Parameters affecting the photocatalytic degradation of dyes using TiO2: a review

Photocatalytic paper using zinc oxide nanorods

Development and characterization of a hybrid mesoporous material infused with metallic oxide nanoparticles for water treatment

Contact Info

Product

Resources

About