Thiourea assisted hydrothermal synthesis of ZnS/CdS/Ag2S nanocatalysts for photocatalytic degradation of Congo red under direct sunlight illumination

RSC Advances ◽  
2016 ◽  
Vol 6 (5) ◽  
pp. 4227-4236 ◽  
Author(s):  
Kalyanaraman Kalpana ◽  
Vaithilingam Selvaraj
Keyword(s):  
Hydrothermal Synthesis ◽  
Photocatalytic Degradation ◽  
Congo Red ◽  
Solar Light ◽  
Direct Sunlight ◽  
Congo Red Dye ◽  
Red Dye

Schematic illustration for the photodecomposition of Congo red dye using ZnS/CdS/Ag2S nanocomposites under solar light.

Efficient Solar Light Driven Photocatalytic Degradation of Congo Red Dye on CdS Nanostructures Derived from Single Source Precursor

2018 ◽  
Vol 18 (11) ◽  
pp. 7405-7413 ◽  
Author(s):  
Jamal Abdul Nasir ◽  
Shaheen Gul ◽  
Azam Khan ◽  
Zawar Hussain Shah ◽  
Abrar Ahmad ◽  
...  
Keyword(s):  
Photocatalytic Degradation ◽  
Congo Red ◽  
Solar Light ◽  
Single Source ◽  
Congo Red Dye ◽  
Single Source Precursor ◽  
Cds Nanostructures ◽  
Red Dye

scholarly journals Decolourization of Congo Red Dye using Solar/H2O2 Process

2021 ◽  
Vol 33 (6) ◽  
pp. 1294-1298
Author(s):  
R. Raja ◽  
A. Rose Venis ◽  
R. Tamil Selvan ◽  
T. Mohandas
Keyword(s):  
Light Intensity ◽  
Congo Red ◽  
Advanced Oxidation Process ◽  
Kinetic Studies ◽  
Solar Light ◽  
H2o2 Concentration ◽  
Congo Red Dye ◽  
Toc Removal ◽  
Red Dye ◽  
Removal Studies

The Congo red dye was decolourized by advanced oxidation process using solar/H2O2 method and the effect of various parameters on decolourization like pH, H2O2 concentration, dye concentration, solar light intensity, additives, COD and TOC removal studies and kinetic studies were investigated. The photodegradation process was done by exposing dye solutions with the concentration of 100 mg/L treated with 50% H2O2 to sunlight with the lux intensity range of 60,000-90,000 lux. The best possible pH 2 with an optimal H2O2 concentration of 1000 mM to achieve 100% decolourization within the period of 5 h. The kinetic studies done on H2O2 concentration also proved that the high solar light intensity leads to higher decolourization and low solar light intensity leads to lesser decolourization. Addition of additives like H2PO4 – and Cl– leads to a decrease in the rate of decolourization. The removal of COD and TOC removal was found to be 83.26% and 5.18%, respectively.

Development of chitosan decorated Fe3O4 nanospheres for potential enhancement of photocatalytic degradation of Congo red dye molecules

2021 ◽  
pp. 120511
Author(s):  
Muthuchamy Maruthupandy ◽  
Thillaichidambaram Muneeswaran ◽  
Thirumalaiswamy Vennila ◽  
Muthusamy Anand ◽  
Wan-Seob Cho ◽  
...  
Keyword(s):  
Photocatalytic Degradation ◽  
Congo Red ◽  
Dye Molecules ◽  
Congo Red Dye ◽  
Fe3o4 Nanospheres ◽  
Red Dye

Photocatalytic Performance Evaluation of Bismuth Doped Tin-Dioxide under UV and Direct Sunlight Irradiation for Congo Red Dye Degradation

2020 ◽  
Vol 42 (5) ◽  
pp. 687-687
Author(s):  
Nauman Ali Nauman Ali ◽  
Adnan khan Adnan khan ◽  
Aaisha Riaz Aaisha Riaz ◽  
Abdullah M Asiri and Tahseen Kamal Abdullah M Asiri and Tahseen Kamal
Keyword(s):  
Photocatalytic Degradation ◽  
Congo Red ◽  
Tin Dioxide ◽  
Photocatalytic Performance ◽  
Dye Degradation ◽  
Sno2 Nanoparticles ◽  
Research Work ◽  
Precipitation Method ◽  
Congo Red Dye ◽  
Red Dye

In the current research work, bismuth doped tin-dioxide (Bi-SnO2) was prepared by wet chemical co-precipitation method. The synthesized material was used as a photocatalyst in the degradation of congo red dye (CR) in its aqueous solution. The prepared catalyst was used in the uncalcined- and calcined forms for the photocatalytic reaction. The synthesized catalyst in both forms was characterized by UV-visible spectroscopy, scanning electron microscopy (SEM) and X-ray diffraction (XRD). The XRD revealed that the calcination of the Bi-SnO2 improved its crystallinity. The SEM showed that the Bi-SnO2 had average size less than 150nm. Photocatalytic degradation of CR dye was carried out under ultra-violet light as well as under sunlight. While testing the photocatalytic degradation performance, it was found that more than 80% of the CR was degraded by using Bi-SnO2 nanoparticles under both lighting conditions. Moreover, the calcined Bi-SnO2 nanoparticles showed better photocatalytic performance as compared to its uncalcined form. The present work provides a viable way to make efficient photocatalyst based-on Bi-SnO2 to employ under UV and sunlight for the degradation of the CR dye without the need of oxidizing or reducing agents.

Visible light driven efficient photocatalytic degradation of Congo red dye catalyzed by hierarchical CuS–Bi2CuxW1−xO6−2x nanocomposite system

RSC Advances ◽  
2016 ◽  
Vol 6 (42) ◽  
pp. 35589-35601 ◽  
Author(s):  
Yagna Prakash Bhoi ◽  
Swaraj Rashmi Pradhan ◽  
Chinmaya Behera ◽  
B. G. Mishra
Keyword(s):  
Visible Light ◽  
Photocatalytic Degradation ◽  
Congo Red ◽  
Nanocomposite Materials ◽  
Congo Red Dye ◽  
System P ◽  
Nanocomposite System ◽  
Visible Light Driven ◽  
Red Dye

A series of CuS–Bi2CuxW1−xO6−2x nanocomposite materials were prepared and evaluated as photocatalyst for degradation of Congo red dye from aqueous sources.

Photocatalytic degradation of Congo red dye using nickel–titanium dioxide nanoflakes synthesized by Mukia madrasapatna leaf extract

2021 ◽  
pp. 111647
Author(s):  
Karuppusamy Indira ◽  
Sabarathinam Shanmugam ◽  
Anjana Hari ◽  
Seerangaraj Vasantharaj ◽  
Selvam Sathiyavimal ◽  
...  
Keyword(s):  
Titanium Dioxide ◽  
Photocatalytic Degradation ◽  
Congo Red ◽  
Leaf Extract ◽  
Nickel Titanium ◽  
Congo Red Dye ◽  
Red Dye
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