Inter-relationship between nanostructures of conducting polyaniline and the photocatalytic methylene blue dye degradation efficiencies of its hybrid composites with anatase TiO2

Epitaxial anatase TiO2 thin films were grown on (001) oriented SrTiO3 single crystal substrates by liquid phase deposition at 50°C. The film consisted of nanosized crystallites and exhibited a significant void fraction of 31 %. This contributed to the cracking of thicker films due to the generation of capillary stresses in the nanosized pores during drying. This porosity also comes in useful during the photodegradation of a methylene blue dye by an as-grown film.

Download Full-text

Photo Catalytic Activity of Anatase TiO2/PVA Film Coated Glass Plate

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.584.396 ◽

2012 ◽

Vol 584 ◽

pp. 396-400 ◽

Cited By ~ 1

Author(s):

Aravind Naga Revuru ◽

Nagarajan Padmavathy ◽

Angappan Sheela ◽

Swamiappan Sasikumar

Keyword(s):

Methylene Blue ◽

Dye Degradation ◽

Anatase Phase ◽

Glass Plate ◽

Photocatalytic Decomposition ◽

Blue Dye ◽

Methylene Blue Dye ◽

Contributing Factors ◽

Tio2 Sample ◽

Tlc Plates

The major cause of surface and ground water contamination is due to effluent from dyeing industries. The discharged effluent chemicals inhibit light penetration into water bodies and some are considered to be carcinogenic. In this study, the photocatalytic decomposition of the synthetic dye, methylene blue was investigated in the presence of activated TiO2. The TiO2 sample was characterized by using XRD to analyze the presence of anatase and rutile phases. The dye degradation was monitored as a change in absorbance by UV-Visible spectrophotometer. The contributing factors towards dye degradation include both the dye concentration as well as the quantity of TiO2 used. Different quantities of TiO2 in anatase phase was taken and activated under UV radiation for 15 min. and subsequently coated on to TLC plates using 5% polyvinyl alcohol as a binding agent. This photocatalytic plate was kept in the methylene blue dye solution and exposed to sunlight. The results shows that 57% of the 30ppm methylene blue dye gets degraded within 75min., when exposed to UV activated TiO2 in presence of natural sunlight.

Download Full-text

Methylene Blue Dye Degradation by Silver Nanoparticles Biosynthesized Using Seed Extracts of Foeniculum vulgare

Zero Waste ◽

10.1201/9780429059247-14 ◽

2019 ◽

pp. 219-225

Author(s):

S. Anjum Mobeen ◽

K. Riazunnisa

Keyword(s):

Methylene Blue ◽

Silver Nanoparticles ◽

Dye Degradation ◽

Blue Dye ◽

Methylene Blue Dye ◽

Foeniculum Vulgare ◽

Seed Extracts

Download Full-text

Two pure MOF-photocatalysts readily prepared for the degradation of methylene blue dye under visible light

Dalton Transactions ◽

10.1039/c8dt00156a ◽

2018 ◽

Vol 47 (12) ◽

pp. 4251-4258 ◽

Cited By ~ 65

Author(s):

Ming Zhang ◽

Liwen Wang ◽

Tianyu Zeng ◽

Qigao Shang ◽

Hong Zhou ◽

...

Keyword(s):

Methylene Blue ◽

Visible Light ◽

Coordination Polymers ◽

Dye Degradation ◽

Blue Dye ◽

Methylene Blue Dye

Two 3D coordination polymers, bridged by 4,4′-bipyridine, were readily synthesized and fully characterized. As efficient photocatalysts in dye degradation under visible light, the mechanism and stability were studied.

Download Full-text