Chitosan-based microparticles for immobilization of TiO2 nanoparticles and their application for photodegradation of textile dyes

Škorić, Marija Lučić; Terzić, Ivan; Milosavljević, Nedeljko; Radetić, Maja; Šaponjić, Zoran; Radoičić, Marija; Krušić, Melina Kalagasidis

doi:10.1016/j.eurpolymj.2016.06.026

Cited by 41 publications

(4 citation statements)

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“…Different studies have reported the photocatalytic treatment of lab prepared dyestuff solutions and textile industrial effluents, according to scientific literature the effectiveness of this treatment depends on the photocatalytic material employed in the process, thus, for example, Liu et al [8] have found a maximum Acid Yellow 17 removal ratio of 70.6% at pH 3 during the 375 min of reaction time; on the other hand, Škoric´et al [9] have studied TiO 2 nanoparticles immobilized in chitosan-based microparticles for photodegradation of textile dyes, in this study it was found a removal ratio of 75 and 95% for lab prepared solutions of Reactive Yellow 17 and Acid Orange 7, respectively. Just a few studies have included as target substrate real industrial wastewater, in these reports, it is possible to find that almost 70% of color in the wastewater was removed when the catalyst concentration was 200 mg/L [13].…”

Section: Photocatalyticmentioning

confidence: 99%

“…Photocatalysis has been recognized as an eco-friendly, less expensive, non-selective and effective alternative in the treatment of effluents. Thus, a number of studies have demonstrated that heterogeneous photocatalysis is a promising approach of Advanced Oxidation Process in the treatment of dyestuffs in the liquid phase [2][3][4][5][6][7][8][9][10][11]. In most of these studies, lab prepared dyes solutions or synthetic wastewater are employed and only a few researchers have conducted studies by using real industrial wastewater samples [12,13].…”

Section: Introductionmentioning

confidence: 99%

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Fluorinated and Platinized Titania as Effective Materials in the Photocatalytic Treatment of Dyestuffs and Stained Wastewater Coming from Handicrafts Factories

et al. 2019

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In this study, commercial and lab-prepared TiO2 were modified by fluorination and platinum photodeposition; and the effect of these modifications over the physicochemical and photocatalytic properties of TiO2 was evaluated. It was found that F and Pt addition leads to the modification of the optical and textural properties of TiO2. The materials prepared were tested in the photocatalytic degradation of different organic dyestuffs such as methylene blue (MB) and methyl orange (MO); the degradation of commercial anilines employed in the staining of natural fibers was also evaluated. Photocatalysis was also studied in this work as an eco-friendly treatment of wastewater coming from handicrafts factories. In general it was observed that the effectiveness of the photocatalytic treatment strongly depends on the substrate to be degraded, thus, fluorinated and platinized commercial Titania (Pt-F-P25) showed the best photocatalytic performance in the MB and MO photodegradation and in contrast, in the case of the anilines the highest degradation was obtained over commercial TiO2 fluorinated (F-P25). These results can be explained by differences observed in the structure and in the adsorption of these dyestuffs over the photocatalysts surfaces. F-P25 photocatalyst also demonstrated to be the best material for the treatment of real wastewater coming from handicrafts factories.

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Section: Photocatalyticmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Fluorinated and Platinized Titania as Effective Materials in the Photocatalytic Treatment of Dyestuffs and Stained Wastewater Coming from Handicrafts Factories

et al. 2019

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“…To date, titanium dioxide (TiO 2 ) is the most widely studied semiconductor metal oxide photocatalyst used for water treatment owing to its proven efficiency in the mineralization of organic contaminants . Nevertheless, very few practical applications of TiO 2 nanoparticles in water treatment has been reported due to the difficulties associated with separation of the fine TiO 2 nanoparticles from the treated water .…”

Section: Introductionmentioning

confidence: 99%

Physicochemical stability of calcium alginate beads immobilizing TiO₂ nanoparticles for removal of cationic dye under UV irradiation

Lam

Chong

Horri

et al. 2017

J of Applied Polymer Sci

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Recently, there have been considerable interests to immobilize photocatalyst in alginate beads for removing pollutants from water sources. However, the feasibility of using alginate beads in industry largely depends on its long‐term stability during operation. This study investigated the physicochemical stability of alginate/titanium dioxide beads (Alg/TiO2) when exposed to UV irradiation in aqueous environment. The degradation of Alg/TiO2 beads was evident because the diameter and mass of the beads was reduced by 12% and 40%, respectively, after 120 h of irradiation. A substantial amount of TiO2 was leached into the external medium. Consequently, the removal efficiency of model cationic dye was found to reduce after every process cycle. Morphological analysis showed the formation of cavities on the surface of the Alg/TiO2 beads. Interestingly, the blank alginate beads degraded more rapidly than the Alg/TiO2 beads, confirming the UV‐shielding effect of TiO2. Nevertheless, this study reveals the need to improve the UV stability of alginate‐based beads before they can be considered for practical application. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 45002.

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“…The photocatalytic reactions for the degradation of trace acids, dyes and pesticides in water have been used by researchers in recent years. It is the advanced oxidation process 17 to degrade the water contaminants such as acids 18 , dyes 19 , pesticides 20 and non biodegradable materials 21 , which exhibit chemical stability and resistance to biodegradation 22 .…”

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confidence: 99%

Photocatalytic Activity of Co:TiO2 Nanocomposites and their Application in Photodegradation of Acetic Acid

2017

Chem Sci Trans

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Nanocomposites of Co:TiO 2 were prepared by wet chemical methods. The prepared samples were characterized by XRD, SEM, BET, FTIR and UV-Visible spectra. The XRD analysis confirmed the presence of rutile and anatase both phases were present. It is found that rutile phase was more dominant. Applying the Scherrer's calculations through which particle size was found 35 and 80 nm in case of Co:TiO 2 and pure TiO 2 respectively. SEM image of Co:TiO 2 and TiO 2 were observed and both found in nanodiamension. The photocatalytic degradation of acetic acid was done at different condition of concentration, amount of photocatalyst and type of catalyst. The effective photodegradation of acetic acid were found at low concentration and photodegradation increases with decrease the concentration of acetic acid. The prominent degradation of acetic acid was found in the presence of nanocomposites Co:TiO 2 as compared with TiO 2 .

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Chitosan-based microparticles for immobilization of TiO2 nanoparticles and their application for photodegradation of textile dyes

Cited by 41 publications

References 41 publications

Fluorinated and Platinized Titania as Effective Materials in the Photocatalytic Treatment of Dyestuffs and Stained Wastewater Coming from Handicrafts Factories

Fluorinated and Platinized Titania as Effective Materials in the Photocatalytic Treatment of Dyestuffs and Stained Wastewater Coming from Handicrafts Factories

Physicochemical stability of calcium alginate beads immobilizing TiO₂ nanoparticles for removal of cationic dye under UV irradiation

Photocatalytic Activity of Co:TiO2 Nanocomposites and their Application in Photodegradation of Acetic Acid

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Chitosan-based microparticles for immobilization of TiO2 nanoparticles and their application for photodegradation of textile dyes

Cited by 41 publications

References 41 publications

Fluorinated and Platinized Titania as Effective Materials in the Photocatalytic Treatment of Dyestuffs and Stained Wastewater Coming from Handicrafts Factories

Fluorinated and Platinized Titania as Effective Materials in the Photocatalytic Treatment of Dyestuffs and Stained Wastewater Coming from Handicrafts Factories

Physicochemical stability of calcium alginate beads immobilizing TiO2 nanoparticles for removal of cationic dye under UV irradiation

Photocatalytic Activity of Co:TiO2 Nanocomposites and their Application in Photodegradation of Acetic Acid

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Physicochemical stability of calcium alginate beads immobilizing TiO₂ nanoparticles for removal of cationic dye under UV irradiation