Tin oxide-surface modified anatase titanium(iv) dioxide with enhanced UV-light photocatalytic activity

2012 ◽  
Vol 14 (2) ◽  
pp. 705-711 ◽  
Author(s):  
Musashi Fujishima ◽  
Qiliang Jin ◽  
Hironori Yamamoto ◽  
Hiroaki Tada ◽  
Michael Nolan
Keyword(s):  
Photocatalytic Activity ◽  
Tin Oxide ◽  
Uv Light ◽  
Oxide Surface ◽  
Surface Modified

Preparation and Photocatalytic Activity of Silver Doped TiO2 Nanotubes

2014 ◽  
Vol 618 ◽  
pp. 14-18
Author(s):  
Ying Cao Xu ◽  
Hong You
Keyword(s):  
Acetic Acid ◽  
Photocatalytic Activity ◽  
Light Intensity ◽  
Anodic Oxidation ◽  
Ag Nanoparticles ◽  
Uv Light ◽  
Effect Factors ◽  
Glycerol Water ◽  
Surface Modified

In this paper, highly ordered TiO2 nanotubes were performed by the method of anodic oxidation, using glycerol / water, NH4F as the electrolyte, and Oxidation voltage to 25v for 1h. TiO2 nanotube surface modified by Ag nanoparticles, by using UV light to restore Ag+ to Ag, the Ag+ from AgNO3 solution sputted out by ultrasonic. Ag-doped TiO2 was used to degrade acetic acid concentrations under UV light. Different Ag/TiO2, HAc concentration, and light intensity were selected as effect factors, TiO2 as contrast test.

Photocatalytic activity of polyaniline and neutral polyaniline for degradation of methylene blue and malachite green dyes under UV Light

2021 ◽  
Vol 78 (5) ◽  
pp. 2849-2865
Author(s):  
Bircan Haspulat Taymaz ◽  
Recep Taş ◽  
Handan Kamış ◽  
Muzaffer Can
Keyword(s):  
Methylene Blue ◽  
Photocatalytic Activity ◽  
Malachite Green ◽  
Uv Light

Solar, visible and UV light photocatalytic activity of CoWO4for the decolourization of methyl orange

2014 ◽  
Vol 54 (11) ◽  
pp. 3134-3145 ◽  
Author(s):  
Kandasamy Jothivenkatachalam ◽  
Saravanan Prabhu ◽  
Arjunan Nithya ◽  
Singaravelu Chandra Mohan ◽  
Kulandaivel Jeganathan
Keyword(s):  
Photocatalytic Activity ◽  
Methyl Orange ◽  
Uv Light

scholarly journals Zirconium-Doped Chromium IV Oxide Nanocomposites: Synthesis, Characterization, and Photocatalysis towards the Degradation of Organic Dyes

Catalysts ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 117
Author(s):  
Zahir Muhammad ◽  
Farman Ali ◽  
Muhammad Sajjad ◽  
Nisar Ali ◽  
Muhammad Bilal ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Photocatalytic Activity ◽  
Methyl Orange ◽  
Solid State ◽  
Room Temperature ◽  
Organic Dyes ◽  
Uv Light ◽  
Heterogeneous Photocatalysis ◽  
Ft Ir ◽  
Complete Mineralization

Degradation of organic dyes and their byproducts by heterogeneous photocatalysts is an essential process, as these dyes can be potentially discharged in wastewater and threaten aquatic and xerophyte life. Therefore, their complete mineralization into nontoxic components (water and salt) is necessary through the process of heterogeneous photocatalysis. In this study, Zr/CrO2 (Zirconium-doped chromium IV oxide) nanocomposite-based photocatalysts with different compositions (1, 3, 5, 7 & 9 wt.%) were prepared by an environmentally friendly, solid-state reaction at room temperature. The as-prepared samples were calcined under air at 450 °C in a furnace for a specific period of time. The synthesis of Zr/CrO2 photocatalysts was confirmed by various techniques, including XRD, SEM, EDX, FT-IR, UV-Vis, and BET. The photocatalytic properties of all samples were tested towards the degradation of methylene blue and methyl orange organic dyes under UV light. The results revealed a concentration-dependent photocatalytic activity of photocatalysts, which increased the amount of dopant (up to 5 wt.%). However, the degradation efficiency of the catalysts decreased upon further increasing the amount of dopant due to the recombination of holes and photoexcited electrons.

Photocatalytic Activity of Fe-Doped ZnO/Montmorillonite Nanocomposite for Degradation of Malachite Green

2015 ◽  
Vol 827 ◽  
pp. 19-24 ◽  
Author(s):  
Nur Afifah ◽  
Nadia Febiana Djaja ◽  
Rosari Saleh
Keyword(s):  
Photocatalytic Activity ◽  
Malachite Green ◽  
Organic Dyes ◽  
Uv Light ◽  
Precipitation Method ◽  
X Ray Diffraction ◽  
X Ray ◽  
Spin Resonance ◽  
Doped Zno ◽  
Co Precipitation

In this study, the photocatalytic activity of pure Fe- doped ZnO and Fe- doped ZnO/Montmorillonite nanocomposite has been investigated for the degradation of malachite green under UV light irradiation. Both photocatalysts were synthesized using co-precipitation method and characterized by X-ray diffraction, energy dispersive X-ray spectroscopy, Fourier-transform infrared absorption, and electron spin resonance. The results showed that the photocatalytic efficiency is better in the presence of montmorillonite compared to pure Fe- doped ZnO. To detect the possible reactive species involved in degradation of organic dyes control experiments with introducing scavengers into the solution of organic dyes were carried out. It is found that electron plays an important role in the degradation of malachite green.

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