Photocatalytic degradation of trypan blue and methyl orange azo dyes by cerium loaded CuO nanoparticles

The potential utility of electrospun polystyrene (PS) nanofibers embedded with 2,6-diiodo-8-phenyl-1,7-dimethyl-3,5-di-2-thienylvinyleneBODIPY for the photocatalytic degradation of azo dyes is investigated. A comparison of the singlet oxygen quantum yield of the [Formula: see text]-extended BODIPY dye in solution and in the PS nanofibers demonstrates that its photosensitizer properties are retained when it is embedded in the solid phase. The photocatalytic degradation properties of the PS nanofibers for Methyl Orange and Orange G were determined by using a Thorlabs 625 nm light emitting diode. The rate of photodegradation increases with the Orange G and Methyl Orange concentration and follows pseudo-first order kinetics at pH 6.7.

Download Full-text

Asymmetrical and symmetrical zinc phthalocyanine-cobalt ferrite conjugates embedded in electrospun fibers for dual photocatalytic degradation of azo dyes: Methyl Orange and Orange G

Journal of Photochemistry and Photobiology A Chemistry ◽

10.1016/j.jphotochem.2019.04.048 ◽

2019 ◽

Vol 379 ◽

pp. 112-122 ◽

Cited By ~ 16

Author(s):

Sivuyisiwe Mapukata ◽

Nagao Kobayashi ◽

Mutsumi Kimura ◽

Tebello Nyokong

Keyword(s):

Methyl Orange ◽

Photocatalytic Degradation ◽

Azo Dyes ◽

Cobalt Ferrite ◽

Zinc Phthalocyanine ◽

Electrospun Fibers ◽

Orange G

Download Full-text

Isolation and Screening of Azo Dyes Tolerant Bacteria in Semi-Scale Industrial Effluents

Journal of Chemistry Environmental Sciences and its Applications ◽

10.15415/jce.2018.42008 ◽

2018 ◽

Vol 4 (2) ◽

pp. 59-61

Author(s):

V K Pandey ◽

N Kumar ◽

A K Bhardwaj

Keyword(s):

Methyl Orange ◽

Organic Compound ◽

Azo Dyes ◽

Azo Dye ◽

Trypan Blue ◽

Industrial Effluent ◽

Industrial Effluents ◽

Ex Situ ◽

Industrial Processing

Dyes are organic compound have colouring properties of the object which used in industrial application. Huge effluent are releasing by industrial processing, where the microorganism may naturally adopted against particular problems. Present work focused over the selection and screening few best native candidates from diverse bacteria from semi-skilled dye industrial effluent. From eleven isolated bacterial colonies only two are found resistant against azo dyes (Methyl orange and Trypan blue). During the screening it observed that isolates of bacteria (VN1 and VN2) were tolerates and decolorize azo dye up to 500 ppm. These bacterial strain can be used efficientlyremoval of dyes contamina-tion from ex-situ and in-situ.

Download Full-text

Synthesis of Gd2O3 Nanoparticles and Their Photocatalytic Activity for Degradation of Azo Dyes

Catalysts ◽

10.3390/catal11060742 ◽

2021 ◽

Vol 11 (6) ◽

pp. 742

Author(s):

Sugyeong Jeon ◽

Jeong-Won Ko ◽

Weon-Bae Ko

Keyword(s):

Methyl Orange ◽

Photocatalytic Degradation ◽

Azo Dyes ◽

Uv Light ◽

Nitrate Hexahydrate ◽

Acid Orange 7 ◽

Pseudo First Order Reaction ◽

Acid Orange ◽

Vis Spectroscopy ◽

Gd2o3 Nanoparticles

Gadolinium oxide (Gd2O3) nanoparticles were prepared via the reaction of gadolinium nitrate hexahydrate (Gd (NO3)3·6H2O) and ethylamine (C2H5NH2), and their surface morphology, particle size, and properties were examined by using scanning electron microscopy, X-ray diffraction (XRD), Raman spectroscopy, Fourier transform infrared (FT-IR) spectroscopy, and ultraviolet visible (UV-vis) spectroscopy. The Gd2O3 nanoparticles were used as the photocatalyst for the degradation of various azo dyes, such as methyl orange (MO), acid orange 7 (AO7), and acid yellow 23 (AY23) under irradiation with UV light. The effect of the experimental parameters (initial concentration of azo dyes, dosage of catalyst, and wavelength of UV light) on the photocatalytic properties of the Gd2O3 nanoparticles were investigated. At a constant H2O2 concentration, the photocatalytic degradation efficiency of the Gd2O3 nanoparticles for various azo dyes was in the order: methyl orange > acid orange 7 > acid yellow 23. The kinetics study showed that the photocatalytic degradation of azo dyes was followed by a pseudo first-order reaction rate law.

Download Full-text