Photodegradation of organic dyes based on anatase and rutile TiO<sub>2</sub>nanoparticles

Gautam, Aashish; Kshirsagar, Anuraj S.; Biswas, R.; Banerjee, Shaibal; Khanna, Pawan K.

doi:10.1039/c5ra20861k

Cited by 124 publications

(36 citation statements)

References 73 publications

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“…The hydroxyl radical (˙OH) acts as a strong oxidizing agent assigned by standard oxidation potential (E o ) as much as 2.8 V, that is higher than other oxidants such as ozone (E o = 2.0 V) and H2O2 (E o = 1.8 V) (Fujishima et al, 2000). The high strength of the hydroxyl radicals (˙OH) can induce Pb 2+ oxidation (Tanaka et al, 1986;Chen and Ray, 2001;Wahyuni et al, 2015), as illustrated by reaction (3), as well as degrade a large number of organic compounds (Reza et al, 2017;Ajmal et al, 2014;Dariani et al, 2016;Zuo et al, 2014;Gautam et al, 2016;Shukla et al, 2009;Choquette-Labbé et al, 2014;Grabowska et al, 2012;Turki et al, 2015) effectively. However, due to the heterogeneous system, the photocatalysis process faces light entering inhibition when large dose of the TiO2 powder is used (Reza et al, 2017;Dariani et al, 2016;Gautam et al, 2016), leading to the less effective photooxidation.…”

Section: Introductionmentioning

confidence: 99%

Removal of Pb (II) Ions in The Aqueous Solution by Photo-Fenton Method

2019

Global NEST Journal

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<p>Photo-Fenton for decreasing concentration of Pb(II) ions in the aqueous solution is systematically studied. The photo-Fenton process was carried out by batch technique, under UV light. The influences of process operating parameters were evaluated. The results of the research demonstrated that by photo-Fenton process, the concentration of Pb(II) ions in the aqueous solution can be decreased, that may be through oxidation mechanism by OH radicals. The decrease is found to be controlled by Fe2+ and H2O2 concentrations, as well as by the pH and the irradiation time. For 20 mg/L of Pb(II) in the 100 mL solution, the optimum condition of the oxidation is obtained to be 10 mmole/L of Fe2+, 200 mmole/L of H2O2, pH 3, and 90 min of the reaction time. It is also confirmed that the oxidation of Pb (II) by OH radical has formed the undissolved PbO2, that is less toxic and easier to be handled.</p>

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Section: Introductionmentioning

confidence: 99%

Removal of Pb (II) Ions in The Aqueous Solution by Photo-Fenton Method

2019

Global NEST Journal

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“…It means that they can only be activated with UV light irradiation having a wavelength (λ) of 387 nm or lower. Many studies in the area show the use of UV radiation as a photon source for both photocatalytic inactivation of microorganisms [6][7][8][9][10][11] and dye degradation [12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30].…”

Section: Introductionmentioning

confidence: 99%

Silver Nanoparticle Incorporated Titanium Oxide for Bacterial Inactivation and Dye Degradation

Wahyuni¹,

Roto²

2018

Titanium Dioxide - Material for a Sustainable Environment

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This chapter deals with preparation and characterization of silver nanoparticles incorporated in titania or TiO 2-AgNP in short and its performance study as a visible light responsive photocatalyst for bacterial inactivation and dye degradation. The preparation of TiO 2-AgNP performed by several methods including sol-gel, impregnation, precipitation, and photocatalytic deposition is described. Characterizations by XRD, XPS, FTIR, DRUV, and SEM/TEM machines to confirm the formation of the metallic silver nanoparticle, as well as the shape and size, and to follow the interaction between Ag atoms and other atoms in the crystal lattice of TiO 2, are presented. Further, the antibacterial performance and dye degradation activity of TiO 2-AgNP, both under UV and visible light, are described.

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“…6(A&B) shows the effect of catalyst doses (10, 20, and 30 mg) on degradation kinetics of dyes. The degradation rate of Rh-B and CR dyes was increased with an increase in catalyst dose [25,26]. Also, degradation efficiency was increased i.e.…”

Section: Photocatalytic Degradation Of Dyesmentioning

confidence: 94%

Bio-fabricated CuO NPs as green catalyst towards remediation of environmental pollutants

2019

Lett Appl NanoBioSci

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We report the fabrication of biogenic CuO NPs by green chemistry concept using agriculture waste durva grass extract as stabilizing and capping agent. The green methods offer few advantageous over the common physical and chemicals procedures due to easy, fast and eco-friendly i.e. without using costly and hazardous chemicals. The synthesized CuO NPs were characterized using different instrumental techniques such as UV-Vis, IR, XRD and TEM. UV-Vis spectroscopy confirmed the presence of CuO NPs by SPR peak at 299 nm. Fourier transform infrared spectroscopy FTIR) identified the characteristic functional groups of synthesised CuO NPs as well as extract and Powder-XRD conformed for the crystalline nature of CuO NPs. The morphology of the synthesized CuO NPs was monitored by transmission electron microscopy (TEM). In addition, we have performed photocatalytic activity towards pollutant dyes such as Rhodamine B and Congo red. Our study results suggest that the synthesized CuO NPs exhibited good catalytic activity and it could be promising material for the removal/degradation of pollutants dye from waste water.

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Photodegradation of organic dyes based on anatase and rutile TiO₂nanoparticles

Abstract: Dye degradation study using anatase and rutile titania suggests maximum efficiency of about 88% using anatase phase for MB under short UV light however, the maximum degradation under long UV light was not more than 65% (anatase/ rutile/EBT).

Cited by 124 publications

References 73 publications

Removal of Pb (II) Ions in The Aqueous Solution by Photo-Fenton Method

Removal of Pb (II) Ions in The Aqueous Solution by Photo-Fenton Method

Silver Nanoparticle Incorporated Titanium Oxide for Bacterial Inactivation and Dye Degradation

Bio-fabricated CuO NPs as green catalyst towards remediation of environmental pollutants

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Photodegradation of organic dyes based on anatase and rutile TiO2nanoparticles

Abstract: Dye degradation study using anatase and rutile titania suggests maximum efficiency of about 88% using anatase phase for MB under short UV light however, the maximum degradation under long UV light was not more than 65% (anatase/ rutile/EBT).

Cited by 124 publications

References 73 publications

Removal of Pb (II) Ions in The Aqueous Solution by Photo-Fenton Method

Removal of Pb (II) Ions in The Aqueous Solution by Photo-Fenton Method

Silver Nanoparticle Incorporated Titanium Oxide for Bacterial Inactivation and Dye Degradation

Bio-fabricated CuO NPs as green catalyst towards remediation of environmental pollutants

Contact Info

Product

Resources

About

Photodegradation of organic dyes based on anatase and rutile TiO₂nanoparticles