Photocatalytic degradation of phenylene diamine using TiO2-rGO under UV radiation

2022 ◽  
Author(s):  
Madaneshwar Vellakinaru Sugikumar ◽  
Vidhya Varshne Sakthivel ◽  
Gauthaman Mandarasalam ◽  
Mukul Kalayanasundram ◽  
Sindhu Subramanian
Keyword(s):  
Photocatalytic Degradation ◽  
Uv Radiation ◽  
Phenylene Diamine

scholarly journals Comparative Solid Phase Photocatalytic Degradation of Polythene Films with Doped and Undoped TiO2Nanoparticles

2011 ◽  
Vol 2011 ◽  
pp. 1-8 ◽  
Author(s):  
Wasim Asghar ◽  
Ishtiaq A. Qazi ◽  
Hassan Ilyas ◽  
Aftab Ahmad Khan ◽  
M. Ali Awan ◽  
...  
Keyword(s):  
Photocatalytic Degradation ◽  
Ftir Spectroscopy ◽  
Uv Radiation ◽  
Uv Irradiation ◽  
Weight Reduction ◽  
Solid Phase ◽  
Sem Analysis ◽  
Artificial Light ◽  
Metal Doping

Comparative photocatalytic degradation of polythene films was investigated with undoped and metal (Fe, Ag, and Fe/Ag mix) doped TiO2nanoparticles under three different conditions such as UV radiation, artificial light, and darkness. Prepared photocatalysts were characterized by XRD, SEM, and EDS techniques. Photocatalytic degradation of the polythene films was determined by monitoring their weight reduction, SEM analysis, and FTIR spectroscopy. Weight of PE films steadily decreased and led to maximum of 14.34% reduction under UV irradiation with Fe/Ag mix doped TiO2nanoparticles and maximum of 14.28% reduction under artificial light with Ag doped TiO2nanoparticles in 300 hrs. No weight reduction was observed under darkness. Results reveal that polythene-TiO2compositing with metal doping has the potential to degrade the polythene waste under irradiation without any pollution.

scholarly journals Photocatalytic degradation of alachlor by TiO2 nanoparticles from aqueous solutions under UV radiation

2019 ◽  
Vol 14 (1) ◽  
pp. 116-128
Author(s):  
Fatemeh Jamshidi ◽  
Mansooreh Dehghani ◽  
Saeed Yousefinejad ◽  
Aboolfazl Azhdarpoor
Keyword(s):  
Aqueous Solutions ◽  
Photocatalytic Degradation ◽  
Tio2 Nanoparticles ◽  
Uv Radiation

scholarly journals Photocatalytic Degradation of Indigo Carmine Dye Using Calcium Oxide

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Kirana Devarahosahalli Veeranna ◽  
Madhu Theeta Lakshamaiah ◽  
Ramesh Thimmasandra Narayan
Keyword(s):  
Particle Size ◽  
Photocatalytic Degradation ◽  
Uv Radiation ◽  
Calcium Oxide ◽  
Indigo Carmine ◽  
Indigo Carmine Dye

Calcium oxide was used as photocatalyst for the degradation of indigo carmine dye solution in the visible, long UV, and short UV radiation. We have investigated the effectiveness of degradation of indigo carmine dye solution at pH 9 and 12 using calcium oxide with the particle size of 30–36 nm by varying the concentration, dose of adsorbent, and duration. It has been found that the degradation of indigo carmine dye is effective at pH = 9, when 0.12 g of calcium oxide was used. The nature of interaction between calcium oxide and indigo carmine dye was discussed.

scholarly journals Phenol Photocatalytic Degradation by Advanced Oxidation Process under Ultraviolet Radiation Using Titanium Dioxide

2013 ◽  
Vol 2013 ◽  
pp. 1-9 ◽  
Author(s):  
Ali Nickheslat ◽  
Mohammad Mehdi Amin ◽  
Hassan Izanloo ◽  
Ali Fatehizadeh ◽  
Seyed Mohammad Mousavi
Keyword(s):  
Titanium Dioxide ◽  
Photocatalytic Degradation ◽  
Uv Radiation ◽  
Removal Efficiency ◽  
Quartz Glass ◽  
Contact Time ◽  
Phenol Concentration ◽  
Solution Ph ◽  
Glass Tubes ◽  
Initial Phenol Concentration

Background. The main objective of this study was to examine the photocatalytic degradation of phenol from laboratory samples and petrochemical industries wastewater under UV radiation by using nanoparticles of titanium dioxide coated on the inner and outer quartz glass tubes.Method. The first stage of this study was conducted to stabilize the titanium dioxide nanoparticles in anatase crystal phase, using dip-coating sol-gel method on the inner and outer surfaces of quartz glass tubes. The effect of important parameters including initial phenol concentration, TiO2catalyst dose, duration of UV radiation, pH of solution, and contact time was investigated.Results. In the dip-coat lining stage, the produced nanoparticles with anatase crystalline structure have the average particle size of 30 nm and are uniformly distributed over the tube surface. The removal efficiency of phenol was increased with the descending of the solution pH and initial phenol concentration and rising of the contact time.Conclusion. Results showed that the light easily passes through four layers of coating (about 105 nm). The highest removal efficiency of phenol with photocatalytic UV/TiO2process was 50% at initial phenol concentration of 30 mg/L, solution pH of 3, and 300 min contact time. The comparison of synthetic solution and petrochemical wastewater showed that at same conditions the phenol removal efficiency was equal.

scholarly journals Photocatalytic removal of methylene blue dye by using of ZnS and CdS

2019 ◽  
Vol 15 (33) ◽  
pp. 11-16
Author(s):  
Ruqaya Fouad Kadhim
Keyword(s):  
Methylene Blue ◽  
Photocatalytic Activity ◽  
Photocatalytic Degradation ◽  
Uv Radiation ◽  
Degradation Efficiency ◽  
Blue Dye ◽  
Time Interval ◽  
Methylene Blue Dye ◽  
Micro Particles ◽  
Photocatalytic Removal

Photocatalytic degradation of methylene blue was studied using CdS and ZnS as catalyst. The photocatalytic activity of the specimen was studied by exposing to UV-radiation. The result shows that the degradation efficiency of the dye for CdS micro-particles was 92% after 7 hours and for ZnS micro-particles was 88.29% for the same time interval.

Effect of operational parameters on photocatalytic degradation of ethylparaben using rGO/TiO2 composite under UV radiation

2021 ◽  
pp. 111750
Author(s):  
Miguel A. Álvarez ◽  
M. Ruidíaz-Martínez ◽  
José Rivera-Utrilla ◽  
Manuel Sánchez-Polo ◽  
M. Victoria López-Ramón
Keyword(s):  
Photocatalytic Degradation ◽  
Uv Radiation ◽  
Operational Parameters
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