Enhanced UV light induced photocatalytic degradation of Methyl Orange by Fe doped spray pyrolysis deposited ZnO thin films

2019 ◽  
Vol 494 ◽  
pp. 116-123 ◽  
Author(s):  
D. Nithyaa Sree ◽  
S. Paul Mary Deborrah ◽  
C. Gopinathan ◽  
S.S.R. Inbanathan
Keyword(s):  
Thin Films ◽  
Methyl Orange ◽  
Photocatalytic Degradation ◽  
Spray Pyrolysis ◽  
Uv Light ◽  
Zno Thin Films ◽  
Degradation Of Methyl Orange

Synthesis and Characterization of Refluxed Sols and TiO2 Thin Films Using TiOSO4

2007 ◽  
Vol 336-338 ◽  
pp. 2189-2192
Author(s):  
Lei Ge ◽  
Ming Xia Xu ◽  
Hai Bo Fang ◽  
Ming Sun
Keyword(s):  
Thin Films ◽  
Methyl Orange ◽  
Uv Light ◽  
Methyl Orange Solution ◽  
Light Transmittance ◽  
Tio2 Films ◽  
Tio2 Thin Films ◽  
Photocatalytic Activities ◽  
Orange Solution ◽  
Degradation Of Methyl Orange

Nano anatase TiO2 thin films on glass slide substrates were prepared via a dip-coating method using refluxed sols (RS) as precursors, then dried under infrared light and calcined at 500°C for 30min. The RS sols and TiO2 films were characterized by FT-IR, XRD, TEM, UV-Vis and SEM. The photocatalytic activities of the film samples were tested by the degradation of methyl orange solution with a concentration of 10mg/L under UV light irradiation. The results reveal that the RS sols are flavescent, alkalescent and contain needle-like anatase crystals. The TiO2 films are uniform, compact and transparent, their maximal light transmittance exceed 80% under visible light region. The degradation of methyl orange results illustrate that the RS-6 TiO2 thin films show the best photocatalytic activities, the decoloration rate of the methyl orange solution with RS-6 TiO2 thin films reachs 99% after irradiated 160min under UV light.

scholarly journals Efficient and Rapid Photocatalytic Degradation of Methyl Orange Dye Using Al/ZnO Nanoparticles

Nanomaterials ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 1059
Author(s):  
Piangjai Peerakiatkhajohn ◽  
Teera Butburee ◽  
Jung-Hoon Sul ◽  
Supphasin Thaweesak ◽  
Jung-Ho Yun
Keyword(s):  
Methyl Orange ◽  
Photocatalytic Degradation ◽  
Removal Efficiency ◽  
Zno Nanoparticles ◽  
Light Absorption ◽  
Uv Light ◽  
Light Irradiation ◽  
Zno Nps ◽  
Calcination Temperatures ◽  
Degradation Of Methyl Orange

ZnO and Aluminum doped ZnO nanoparticles (Al/ZnO NPs) were successfully synthesized by the sol-gel method. Together with the effect of calcination temperatures (200, 300 and 400 °C) and Al dosage (1%, 3%, 5% and 10%) on structural, morphological and optical properties of Al/ZnO NPs, their photocatalytic degradation of methyl orange (MO) dye was investigated. The calcination temperatures at 200, 300 and 400 °C in forming structure of ZnO NPs led to spherical nanoparticle, nanorod and nanoflake structures with a well-crystalline hexagonal wurtzite, respectively. The ZnO NPs calcined at 200 °C exhibited the highest specific surface area and light absorption property, leading to the MO removal efficiency of 80% after 4 h under the Ultraviolet (UV) light irradiation. The MO removal efficiency was approximately two times higher than the nanoparticles calcined at 400 °C. Furthermore, the 5% Al/ZnO NPs exhibited superior MO removal efficiency of 99% in only 40 min which was approximately 20 times enhancement in photocatalytic activity compared to pristine ZnO under the visible light irradiation. This high degradation performance was attributed to the extended light absorption, narrowed band gap and effective suppression of electron–hole recombination through an addition of Al metal.

Super-Hydrophilic and Photocatalytic Properties of Ag-TiO2 Thin Films Prepared by Sol–Gel Technique

2008 ◽  
Vol 11 (2) ◽  
Author(s):  
Suhas R. Patil ◽  
Urška Lavrenčič Štangar ◽  
Silvia Gross ◽  
Ulrich Schubert
Keyword(s):  
Thin Films ◽  
Methyl Orange ◽  
Comparative Study ◽  
Photocatalytic Degradation ◽  
Methyl Stearate ◽  
Sol Gel ◽  
Tio2 Thin Films ◽  
Solid Interface ◽  
Gel Technique ◽  
Degradation Of Methyl Orange

AbstractA comparative study of photocatalytic degradation of methyl orange (liquid-solid interface) and methyl stearate (solid-solid interface) was performed with three different kinds of transparent pure and Ag-doped TiO

Preparation of Titanium Dioxide Nanotube Arrays and Photocatalytic Degradation of Methyl Orange

2014 ◽  
Vol 886 ◽  
pp. 262-265
Author(s):  
Ying Cao Xu ◽  
Hong You
Keyword(s):  
Titanium Dioxide ◽  
Methyl Orange ◽  
Photocatalytic Degradation ◽  
Uv Light ◽  
Pure Titanium ◽  
Methyl Orange Solution ◽  
Nanotube Arrays ◽  
Nanotube Array ◽  
Orange Solution ◽  
Degradation Of Methyl Orange

This paper adopted electrochemistry anodic oxidation method for preparing TiO2nanotube array membrane on a pure titanium sheet. The results showed that TiO2nanotube arrays were regularly obtained when anodizing voltage at 25V, anodizing time in 60min , NH4F concentration at 0.25mol·L-1, and volume ratio of glycerol and water at 2:1. Using of this titanium dioxide nanotube array photocatalyst, and Under light of ultraviolet lamp, the photocatalytic degradation of methyl orange solution was studied in this paper. The main factors affecting the test selection was: the concentration of methyl orange solution (5mg·L-1, 10mg·L-1, 15mg·L-1, 25mg·L-1, 35mg·L-1), pH of methyl orange solution (2.0,2.5,3.0,3.5, 4.0,5.0,5.5,6.0), catalytic time (30min.60min, 90min, 120min, 150min, 180min, 240min), UV light source (6w, 11w, 15w).

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