Fabrication of visible light driven nano structured Copper, Boron codoped TiO2 for photocatalytic removal of Lissamine Green B

Alim, Shaik Abdul; Rao, T. Siva; Raju, Imandi Manga; Kumar, Mohit; Lakshmi, K. V.

doi:10.1016/j.jscs.2018.05.005

Cited by 20 publications

(8 citation statements)

References 46 publications

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“…By using sol-gel technique Manganese and Nickel co-doped nanotitania was prepared [20][21]. In this procedure n-Butyl orthotitanate (20mL) was added to 40 ml of ethanol and acidified with 3.2 ml of HNO 3 taken in a 150 ml pyrex glass measuring beaker (Solution-A) and then stirred for 15min.…”

Section: B Synthesis Of Nanocatalystmentioning

confidence: 99%

“…To get required pH add 0.1 N NaOH/ 0.1 N HCl basing on the nature of testing solution. The percentage of degradation of AR pollutant was determined by the following formula [21]. % of Degradation = A0 -At/A0 × 100 Where, A0 is starting absorbance of dye solution before debasement and At is absorbance at time t. The ideal conditions are achieved by differing the parameters of reaction like concentration of dopant, pH effect, dosage of catalyst and initial dye concentration and obtained results are discussed in section.…”

Section: Experimental Procedures To the Determination Of Catalytic mentioning

confidence: 99%

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Photocatalytic Degradation of Allura Red by Mn-Ni co-doped Nanotitania under Visible Light Irradiation

Miditana¹,

Rao²,

Alim³

et al. 2019

IJITEE

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Photocatalyst has been extensive interest because of it’s new innovation to the reduce the contamination in the environment. A straight forward and economical procedure has been employed by sol-gel technique for the co-doping of Mn2+ and Ni2+ into TiO2 . The co-doped and undoped photocatalysts were described by X-ray diffraction (XRD), Scanning electron microscopy (SEM), Energy dispersive X-ray Spectroscopy (EDX), Fourier transform infrared spectroscopy (FT-IR), UV-Visible Diffused Reflectance Spectroscopy (UV Vis-DRS), Transmission electron Microscopy (TEM) and Brunauer-Emmett-Teller (BET). The portrayal results shows that anatase and rutile mixed phase was observed for some co-doped nanocatalysts and the remaining catalysts exhibits anatase phase only. It was observed by FT-IR that the shifting of frequency of Ti-O-Ti in the catalysts was seen due to substitutional doping of Mn and Ni by replace Ti and O, further the photocatalysts shows rough morphology, irregular shape of particle with size (6.5nm) and having high surface area (135.70 m2/g), less band energy (2.7 eV). The photocatalytic action of these materials was assessed by the degradation of Allura red (AR) as a contaminant. The results shows that AR has degraded within 60 minutes at doping concentrations 0.25 Wt% of Mn2+ion and 1.0 Wt% of Ni2+ ion in TiO2 (NMT2) at an optimum reaction parameters pH-4, catalyst dose 0.070g/L and at AR initial dye concentration 0.010g/L.

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Section: B Synthesis Of Nanocatalystmentioning

confidence: 99%

Section: Experimental Procedures To the Determination Of Catalytic mentioning

confidence: 99%

Photocatalytic Degradation of Allura Red by Mn-Ni co-doped Nanotitania under Visible Light Irradiation

Miditana¹,

Rao²,

Alim³

et al. 2019

IJITEE

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“…Manganese and nickel co-doped nano titania were synthesized by solgel method [15,16]. In this process n-Butyl ortho titanate (20 mL) was added to 40 mL of ethanol and acidified with 3.2 mL of nitric acid taken in a 150 mL pyrex glass beaker (solution-A) and stirred for 15 min.…”

Section: Synthesis Of Nano Catalystmentioning

confidence: 99%

“…The pH of the dye solutions was adjusted prior to illumination and during the degradation process by addition of 0.1 N NaOH / 0.1 N HCl to get required pH. The percent of degradation of IC dye was calculated from the following equation [16],…”

Section: Determination Of Photo Catalytic Activity Of the Catalystmentioning

confidence: 99%

Study on Structural and Optical Properties of Ni and Mn Codoped TiO2 Nanomaterials and Its Application in Visible Light Photocatalytic Activity of Indigo Caramine Dye

Miditana¹,

Rao²,

Alim³

2019

JNST

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To enhance the photocatalytic activity of TiO2 in visible light, nickel and manganese codoped TiO2 (NMTs) and undoped TiO2 nanomaterials were synthesized by varying dopant concentrations using a solgel method. As prepared nano materials were characterized by using X-ray diffraction (XRD) and its results shows anatase and rutile mixed phase was observed for codoped catalyst samples. Rough morphology, irregular particle shape and elemental composition of catalyst were identified with scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDX) respectively. The Fourier transform infrared spectroscopy (FT-IR) result revealed that the substitutional doping of Mn 2+ and Ni 2+ into TiO2 lattice by replacing Ti 4+ in TiO2 lattice. This was confirmed by shifting of stretching frequencies of Ti-O-Ti from 569 cm-1-608 cm-1. The catalyst (NMT2) exhibits least band gap (2.7 eV), less particle size (6.5 nm) with high surface area (135.70 m 2 /g) when compared to undoped TiO2 (3.2 ev, 18.3 nm, 64.09 m 2 /g), which were determined by UV-visible diffused reflectance spectroscopy (UV Vis-DRS), transmission electron microscopy (TEM) and Brunauer-Emmett-Teller (BET) respectively. Based on the characterization results the efficiency of codoped catalyst were exhibits better photocatalytic degradation of indigo caramine (IC). The results show that IC has degraded within 90 minutes at doping concentrations 1.0 wt% of Ni 2+ ion and 0.25 wt% of Mn 2+ ion in TiO2 (NMT2) at an optimum reaction parameter pH-3, catalyst dosage 0.080 g/L and at IC dye concentration of 0.020 g/L.

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“…In addition, due its anthraquinonic chromophore group and its wide use, this dye is considered as a harmful and recalcitrant contaminant. It has been used as a model pollutant in several studies [2][3][4]. Prednisolone is a steroid medication used in humans and veterinary to treat determined kinds of allergies, inflammatory conditions, cancers, and autoimmune disorders [5].…”

Section: Introductionmentioning

confidence: 99%

Sulfate Radicals-Based Technology as a Promising Strategy for Wastewater

Arellano

Pazos

Sanromán

2019

Water

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This study was focused on the generation of sulfate radicals and their applicability as powerful oxidants for degrading complex organic compounds with the final objective of operating in flow systems. To this end, the removal of two compounds from the pharmaceutical industry was assessed, lissamine green and prednisolone. Initially, sulfate radicals were generated by the activation of persulfate with iron as homogenous catalyst, and the key parameters involved in the process, as catalyst concentration and oxidant dosage, were evaluated. Furthermore, with the aim of preventing the secondary contamination due to metal leaching and to be operate in a continuous mode, a heterogeneous catalyst was developed. For it, the iron was fixed on a cationic resin as Amberlite IR120 Na+ form. It was demonstrated that the removal of both pollutants increases with greater catalyst dosages, achieving a decay of 85% within 25 min with 30 g·L−1 of catalyst. Moreover, the reuse capability of the catalyst was tested, illustrating that it is rough enough for its reuse. Conversely, in order to develop a continuous treatment in flow system, a fixed bed reactor was constructed and its feasibility was proven. Different experiments with residence times from 10 min to 60 min were performed, obtaining a removal level of ≈95% and 90% for prednisolone and lissamine green, respectively, at residence time of 60 min. In conclusion, the potential of sulfate radicals-based technology for degrading organic contaminants has been demonstrated.

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Fabrication of visible light driven nano structured Copper, Boron codoped TiO2 for photocatalytic removal of Lissamine Green B

Cited by 20 publications

References 46 publications

Photocatalytic Degradation of Allura Red by Mn-Ni co-doped Nanotitania under Visible Light Irradiation

Photocatalytic Degradation of Allura Red by Mn-Ni co-doped Nanotitania under Visible Light Irradiation

Study on Structural and Optical Properties of Ni and Mn Codoped TiO2 Nanomaterials and Its Application in Visible Light Photocatalytic Activity of Indigo Caramine Dye

Sulfate Radicals-Based Technology as a Promising Strategy for Wastewater

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