scholarly journals Synthesis of Metal/Silica/Titania Composites for the Photocatalytic Removal of Methylene Blue Dye

2019 ◽  
Vol 2019 ◽  
pp. 1-6 ◽  
Author(s):  
Sana Ahmad ◽  
Arfa Saeed
Keyword(s):  
Methylene Blue ◽  
Organic Pollutant ◽  
Sol Gel ◽  
Blue Dye ◽  
Methylene Blue Dye ◽  
Reaction Conditions ◽  
Structure Morphology ◽  
Photocatalytic Removal ◽  
Ft Ir ◽  
Metal Doped

The present work deals with the synthesis of the metal-doped titanium dioxide/silica composite by using the sol-gel method. The structure, morphology, and composition of the prepared samples were characterized by using Fourier transform infrared spectroscopy (FT-IR), thermogravimetric analysis (TGA), and scanning electron microscopy (SEM). The prepared composites were used for the photodegradation of methylene blue dye in sunlight. Different parameters like pH, time, and catalytic concentration were varied to optimize the reaction conditions. Maximum 99.8% degradation was observed with the Ni-doped composite. The results indicate extraordinary efficiency of all metal-doped composites for the removal of the harmful organic pollutant like methylene blue.

Synthesis of Adsorbent from Bagasse for Methylene Blue Adsorption

2021 ◽  
Vol 7 (2) ◽  
pp. 188-195
Author(s):  
Nurhasni Nurhasni ◽  
Sariana Harahap ◽  
Ahmad Fathoni ◽  
Hendrawati Hendrawati
Keyword(s):  
Methylene Blue ◽  
Textile Industry ◽  
Contact Time ◽  
Ph Effect ◽  
Blue Dye ◽  
Methylene Blue Dye ◽  
Batch Method ◽  
Homogeneous Surface ◽  
Dyeing Process ◽  
Ft Ir

The ability of bagasse adsorbents to adsorb methylene blue without activation using 0.5 M H2SO4 solution was examined. Methylene blue is widely used in the textile industry because it produces bright colors, and the dyeing process is fast and easy. This research aims to determine the optimum adsorption conditions, namely the variations in contact time, dye concentration, adsorbent mass, and pH effect on methylene blue, which were carried out using the batch method. Furthermore, the adsorbents were characterized by FT-IR and SEM. The optimum state of the bagasse adsorbent to adsorb methylene blue dye has a mass of 0.5 grams, a contact time of 30 minutes, a concentration of 50 ppm, and a pH of 5. The character of the adsorbent after activation with H2SO4 was better than without activation. The highest adsorption efficiency of methylene blue dye in the batch method was 99.67%. The FTIR spectrum of the bagasse adsorbent showed OH, C-H, C=O, C=C, and C-O functional groups. The adsorption isotherm model for methylene blue dye follows the Langmuir isotherm since the graph obtained is linear with the correlation coefficient (R2) = 1, where the adsorbent has a homogeneous surface.

Assessing the effectiveness of green synthetized silver nanoparticles with Cryptocarya alba extracts for remotion of the organic pollutant methylene blue dye

2019 ◽  
Vol 26 (15) ◽  
pp. 15115-15123 ◽  
Author(s):  
Gonzalo Recio-Sánchez ◽  
Ricardo Tighe-Neira ◽  
Claudia Alvarado ◽  
Claudio Inostroza-Blancheteau ◽  
Noelia Benito ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Silver Nanoparticles ◽  
Organic Pollutant ◽  
Blue Dye ◽  
Methylene Blue Dye

Sol-gel prepared vanadium oxide for photocatalytic degradation of Methylene Blue dye

2020 ◽  
Author(s):  
Bapuso M. Babar ◽  
Aniruddh A. Mohite ◽  
Vithoba L. Patil ◽  
Udayraj T. Pawar ◽  
Laxman D. Kadam ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Vanadium Oxide ◽  
Photocatalytic Degradation ◽  
Sol Gel ◽  
Blue Dye ◽  
Methylene Blue Dye

Photocatalytic Degradation of Methylene Blue Dye over Copper(II) Complex Nanoparticle Catalyst.

2021 ◽  
pp. 138-142
Author(s):  
Hassan Wafi Garba ◽  
Abubakar Garba Ashiru ◽  
Rooshan Watanpal ◽  
Mohammed Bello ◽  
Kasimu Abubakar ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Single Phase ◽  
Uv Light ◽  
Blue Dye ◽  
Spectroscopic Techniques ◽  
Methylene Blue Dye ◽  
Ft Ir ◽  
Ir Spectroscopic ◽  
Physicochemical And Structural Properties ◽  
Nanoparticle Catalyst

Abstract—A novel copper(II) complex nanoparticles catalyst was synthesized via precipitation and calcination. The catalyst was applied for the degradation of methylene blue under UV light irradiation. The catalyst was characterized for its physicochemical and structural properties by XRD, SEM, TEM and FT-IR spectroscopic techniques. XRD studies revealed that the particles were monoclinic single phase crystalline structure, the morphology of the nanostructure was confirmed by SEM while the TEM studies revealed that the particles were FCC. FTIR spectra showed the presence of diverse vibrational functional groups. Photolysis of the methylene blue dye indicates no degradation after 1 hour reaction, while the addition of the copper(II) complex nanoparticles catalyst resulted in the decolouration of the dye by ~94%. The efficiency of the catalyst was attributed to the nanoparticle’s morphology.

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