Photodegradation of Orange II under Visible Light Using Cu–Ni/TiO2: Influence of Cu:Ni Mass Composition, Preparation, and Calcination Temperature

2013 ◽  
Vol 52 (12) ◽  
pp. 4491-4503 ◽  
Author(s):  
Nadia Riaz ◽  
Fai Kait Chong ◽  
Zakaria B. Man ◽  
M. Saqib Khan ◽  
Binay K. Dutta
Keyword(s):  
Visible Light ◽  
Calcination Temperature ◽  
Mass Composition ◽  
Orange Ii

Photodegradation of Orange II under visible light using Cu–Ni/TiO2: Effect of calcination temperature

2012 ◽  
Vol 185-186 ◽  
pp. 108-119 ◽  
Author(s):  
Nadia Riaz ◽  
F.K. Chong ◽  
Binay K. Dutta ◽  
Zakaria B. Man ◽  
M. Saqib Khan ◽  
...  
Keyword(s):  
Visible Light ◽  
Calcination Temperature ◽  
Orange Ii

Heterogeneous activation of persulfate by Bi2MoO6–CuS composite for efficient degradation of orange II under visible light

Chemosphere ◽  
2022 ◽  
pp. 133558
Author(s):  
Fang Zhu ◽  
Huiqi Wu ◽  
He Zhang ◽  
Sridhar Komarneni ◽  
Jianfeng Ma
Keyword(s):  
Visible Light ◽  
Orange Ii

Preparation and Photocatalysis of a Glass Coated With Nanometer TiO2 Codoped With N, F and Fe Elements

2016 ◽  
Author(s):  
Cong Ding ◽  
Yufei Zhang ◽  
Chen Chuan ◽  
Yanhua Liu
Keyword(s):  
Heat Treatment ◽  
Methylene Blue ◽  
Visible Light ◽  
Calcination Temperature ◽  
Indoor Air ◽  
Heat Treatment Temperature ◽  
Indoor Air Pollution ◽  
Treatment Temperature ◽  
Human Beings ◽  
Glass Plates

Indoor air pollution seriously threats the life and health of human beings. The improvement of indoor air quality has become a focus that people pay more and more attentions to. The photocatalytic of pollutants based on TiO2 is a promising air purification technology. In order to overcome the disadvantages of nanometer powder TiO2 catalyst and to enhance the photocatalytic activity of TiO2, series of glass plates covered with doped-TiO2 were prepared and the photocatalysis them were studied. The glass plates covered with TiO2 which was doped in advance with N, F, or/and Fe were prepared by a sol-gel method. The doping content of N, F, Fe and heat treatment temperature were determined using the orthogonal array of the Taguchi quality design. The prepared gel was coated on the glass by spin-coating method. The effects of doping level of N, F and Fe and heat treatment temperature on the photocatalytic capabilities were investigated. The photocatalytic capabilities of prepared glass plates were investigated by degrading the solution of methylene blue (MB,C16H18ClN3S). The results show that appropriate addition of N, F and Fe and temperaturae are effective for improving the photocatalytic activities of TiO2 under visible light. The optimal TiO2 was prepared under the condition that the doping amount of F element was 9at %, that of N is 7at %, and none of Fe under 400 °C calcination temperature. The degradation rate of the sample for methylene blue solution reaches 23.49% under visible light irradiation for 5 hours. The influence order of the factors was the calcination temperature > F > N > Fe.

p-Cu2O/n-ZnO heterojunction applied to visible light Orange II degradation

Solar Energy ◽  
2010 ◽  
Vol 84 (7) ◽  
pp. 1187-1192 ◽  
Author(s):  
N. Helaïli ◽  
Y. Bessekhouad ◽  
A. Bouguelia ◽  
M. Trari
Keyword(s):  
Visible Light ◽  
Orange Ii ◽  
Light Orange

scholarly journals The Influence of Calcination Temperature on Photocatalytic Activity of TiO2-Acetylacetone Charge Transfer Complex towards Degradation of NOx under Visible Light

Catalysts ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 1463
Author(s):  
Lucas A. Almeida ◽  
Margarita Habran ◽  
Rafael dos Santos Carvalho ◽  
Marcelo E. H. Maia da Costa ◽  
Marco Cremona ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Charge Transfer ◽  
Visible Light ◽  
Calcination Temperature ◽  
Charge Transfer Complex ◽  
Light Exposure ◽  
Sol Gel ◽  
Solar Spectrum ◽  
Photocatalytic Efficiency ◽  
Nanocrystalline Tio2

The improvement of photocatalytic activity of TiO2-based nanomaterials is widely investigated due to the tentative of their industrialization as environmental photocatalysts and their inherently low solar spectrum sensitivity and rapid recombination of charge carriers. Coupling of oxygen-based bidentate diketone to nanocrystalline TiO2 represents a potential alternative for improving the holdbacks. Formation of TiO2-acetylacetone charge transfer complex (CTC) by sol-gel route results in a hybrid semiconductor material with photodegradation activity against toxic NOx gas. In this research, the influence of the chelating agent acetylacetone (ACAC) content on the CTC photocatalytic efficiency under visible light was evaluated. A high content of ACAC in the CTC is not a decisive factor for efficiency of photocatalytic reactions. In fact, the highest efficiency for NOx degradation (close to 100%, during 1 h of visible light exposure) was reported for the material calcined in air at 300 °C with the content of strongly bonded acetylacetone not higher than 3 wt.%. Higher calcination temperature (400 °C) left TiO2 almost completely depleted in ACAC, while at the highest applied temperature (550 °C) a portion of anatase was transformed into rutile and the sample is free of ACAC. The analyses pointed out that superoxide anion radical (O2−) plays an active role in photo-oxidation of NOx. Our findings indicate that this CTC has both high visible light spectral sensitivity and photocatalytic efficiency.

Magnetic core–shell CuFe2O4@C3N4 hybrids for visible light photocatalysis of Orange II

2015 ◽  
Vol 297 ◽  
pp. 224-233 ◽  
Author(s):  
Yunjin Yao ◽  
Fang Lu ◽  
Yanping Zhu ◽  
Fengyu Wei ◽  
Xueting Liu ◽  
...  
Keyword(s):  
Visible Light ◽  
Magnetic Core ◽  
Core Shell ◽  
Visible Light Photocatalysis ◽  
Orange Ii
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