Investigation on SnO2/TiO2 nanocomposites and their enhanced photocatalytic properties for the degradation of methylene blue under solar light irradiation

2021 ◽  
Vol 44 (1) ◽  
Author(s):  
S Kavitha ◽  
N Jayamani ◽  
D Barathi
Keyword(s):  
Methylene Blue ◽  
Light Irradiation ◽  
Photocatalytic Properties ◽  
Solar Light ◽  
Solar Light Irradiation

Study on Degradation of Dyes Wastewater by N-Doped TiO2

2013 ◽  
Vol 634-638 ◽  
pp. 263-266
Author(s):  
Chao Lin Miao ◽  
Hui Wang
Keyword(s):  
Methylene Blue ◽  
Catalytic Activity ◽  
Sol Gel ◽  
Ambient Air ◽  
Light Irradiation ◽  
Photocatalytic Properties ◽  
Solar Light ◽  
Solar Light Irradiation ◽  
Degradation Of Dyes ◽  
Sol Gel Process

nano-sized TiO2 doped with different percentage of N was prepared quickly by sol-gel process，and the photocatalytic properties of degradation dyes wastewaters were studied under stimulant solar light irradiation in the ambient air. Some properties of photocatalysts were characterized by the means of XPS, UV-Vis ,XRD, and degradation loss. The results showed the catalytic activity was the best when the doped of nitrogen was 0.5% at calcinated 400°C，and the degradation of the methylene blue was almost completed.

Photocatalytic Degradation of Methylene Blue by NiO Thin Films under Solar Light Irradiation

2019 ◽  
Vol 56 ◽  
pp. 152-157 ◽  
Author(s):  
Abdelouahab Noua ◽  
Hichem Farh ◽  
Rebai Guemini ◽  
Oussama Zaoui ◽  
Tarek Diab Ounis ◽  
...  
Keyword(s):  
Thin Films ◽  
Methylene Blue ◽  
Photocatalytic Activity ◽  
Sol Gel ◽  
Visible Region ◽  
Optical Transmittance ◽  
Dip Coating ◽  
Light Irradiation ◽  
Solar Light ◽  
Solar Light Irradiation

Nickel oxide (NiO) thin films were successfully deposited by sol-gel dip-coating method on glass substrates. The structural, morphological and optical properties in addition to the photocatalytic activity of the prepared films were investigated. The results show that the films have a polycrystalline NiO cubic structure with dense NiO grains and average optical transmittance in the visible region. The photocatalytic properties of the films were studied through the degradation of methylene blue and 89% of degradation was achieved for 4.5h of solar light irradiation exposure which indicates the capability of NiO photocatalytic activity.

Thickness Effect of Zno Film on the Performance of Photocatalytic in a p-Nio/n-Zno Heterostructure under Solar Light Irradiation

2020 ◽  
Vol 62 ◽  
pp. 87-95
Author(s):  
Hichem Farh ◽  
Abdelouahab Noua ◽  
Rebai Guemini ◽  
Djamal Eldine Guitoume ◽  
Oussama Zaoui
Keyword(s):  
Methylene Blue ◽  
Photocatalytic Activity ◽  
Degradation Rate ◽  
Visible Region ◽  
Light Irradiation ◽  
Thickness Effect ◽  
Solar Light ◽  
Zno Films ◽  
Zno Film ◽  
Solar Light Irradiation

In this work, we studied the ZnO film thickness effect on the photocatalytic performance of n-ZnO/p-NiO heterostructures. The ZnO and NiO films were prepared by sol-gel dip-coating technique and the thickness of the ZnO film was varied by changing the number of coatingsfrom 2 to12. The formation of the p-NiO/n-ZnO heterostructure was confirmed by X ray diffraction (XRD). The obtained ZnO films present a wurtzite structure with a preferred orientation along (002) direction while the NiO film present a cubic structure highly oriented along (200) direction. UV-visible transmittance spectra of the prepared heterostructures revealed a good transparency in the visible region. The photocatalytic propertiesof the n-ZnO/p-NiO heterostructures were investigated by measuring the degradation rate of methylene blue. All the samples exhibit a good photocatalytic activity under solar light irradiation. The photocatalytic activity of p-NiO/n-ZnO heterostructureswas strongly correlated with the number of ZnO coatings. The highest photocatalytic activity was obtained at 6 coatings with a degradation rate of methylene blue equal to 98.67% for 4.5h of irradiation.

scholarly journals Carbon Nanodots from Frying Oil as Catalyst for Photocatalytic Degradation of Methylene Blue Assisted Solar Light Irradiation

2016 ◽  
Vol 13 (4) ◽  
pp. 432-438 ◽  
Author(s):  
Mahardika Prasetya Aji ◽  
Pradita Ajeng Wiguna ◽  
Siti Aisyah Suciningtyas ◽  
Susanto ◽  
Nita Rosita ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Photocatalytic Degradation ◽  
Frying Oil ◽  
Light Irradiation ◽  
Solar Light ◽  
Carbon Nanodots ◽  
Solar Light Irradiation

Degradation and mineralization of methylene blue using a heterogeneous photo-Fenton catalyst under visible and solar light irradiation

2016 ◽  
Vol 6 (4) ◽  
pp. 1222-1232 ◽  
Author(s):  
Yunus Ahmed ◽  
Zahira Yaakob ◽  
Parul Akhtar
Keyword(s):  
Methylene Blue ◽  
Bimetallic Catalyst ◽  
Light Irradiation ◽  
Solar Light ◽  
Solar Light Irradiation ◽  
Fenton Catalyst ◽  
First Time

A SiO2-supported Fe and Ni bimetallic catalyst has been synthesized, characterized and, for the first time, tested as a heterogeneous photo-Fenton catalyst for the degradation and mineralization of methylene blue (MB) dye.

scholarly journals Synthesis of Ag-TiO2/perlite composite for the photodegradation of methylene blue under solar light irradiation

2020 ◽  
Vol 9 (4) ◽  
pp. 42-48
Author(s):  
Nui Pham Xuan ◽  
Hoa Nguyen Thi ◽  
Tien Nguyen Trung ◽  
Tai Le Huu ◽  
Thi Tran Thi Van
Keyword(s):  
Methylene Blue ◽  
Photocatalytic Activity ◽  
Diffuse Reflectance Spectroscopy ◽  
Sol Gel ◽  
Nitrogen Adsorption ◽  
Band Gap Energy ◽  
Light Irradiation ◽  
Solar Light ◽  
Solar Light Irradiation ◽  
Adsorption Desorption

In this research, photocatalytic materials of TiO2, Ag-TiO2, Ag-TiO2/perlite were synthesized by the sol-gel method. By combining the photocatalytic activity between Ag-TiO2 and Perlite mineral, the Ag-TiO2/perlite composite has overcome the disadvantages of pristine TiO2, such as high band gap energy, low light utilization and easy recombination of electrons and holes. The synthesized samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), nitrogen adsorption-desorption isotherm, UV-vis diffuse reflectance spectroscopy (UV-vis DRS). The photocatalytic activity of the samples was tested for degradation of methylene blue (MB) under solar light irradiation. Photodegradation studies revealed a 95% removal of MB dye via the synthesized Ag-TiO2/perlite after 150 min of irradiation. Reusability of this hybrid photocatalyst system was tested and only a 3% decrease was observed after four cycles.

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