Location of photocatalytic oxidation processes on anatase titanium dioxide

2017 ◽  
Vol 7 (2) ◽  
pp. 441-451 ◽  
Author(s):  
Xuan Hao Lin ◽  
Yijia Miao ◽  
Sam Fong Yau Li
Keyword(s):  
Titanium Dioxide ◽  
Photocatalytic Oxidation ◽  
Detailed Mechanism ◽  
Oxidation Processes ◽  
Degradation Processes

The detailed mechanism of photocatalytic oxidation processes on the TiO2 surface is still not completely clear, particularly the location of degradation processes.

scholarly journals Magnetic iron oxide/clay nanocomposites for adsorption and catalytic oxidation in water treatment applications

2020 ◽  
Vol 18 (1) ◽  
pp. 1148-1166
Author(s):  
Ganjar Fadillah ◽  
Septian Perwira Yudha ◽  
Suresh Sagadevan ◽  
Is Fatimah ◽  
Oki Muraza
Keyword(s):  
Iron Oxide ◽  
Water Treatment ◽  
Photocatalytic Oxidation ◽  
Low Cost ◽  
Synthesis Method ◽  
Chemical Oxidation ◽  
Magnetic Iron Oxide ◽  
Oxidation Processes ◽  
Recent Developments ◽  
Physical And Chemical

AbstractPhysical and chemical methods have been developed for water and wastewater treatments. Adsorption is an attractive method due to its simplicity and low cost, and it has been widely employed in industrial treatment. In advanced schemes, chemical oxidation and photocatalytic oxidation have been recognized as effective methods for wastewater-containing organic compounds. The use of magnetic iron oxide in these methods has received much attention. Magnetic iron oxide nanocomposite adsorbents have been recognized as favorable materials due to their stability, high adsorption capacities, and recoverability, compared to conventional sorbents. Magnetic iron oxide nanocomposites have also been reported to be effective in photocatalytic and chemical oxidation processes. The current review has presented recent developments in techniques using magnetic iron oxide nanocomposites for water treatment applications. The review highlights the synthesis method and compares modifications for adsorbent, photocatalytic oxidation, and chemical oxidation processes. Future prospects for the use of nanocomposites have been presented.

Coupling membrane separation and photocatalytic oxidation processes for the degradation of pharmaceutical pollutants

2013 ◽  
Vol 47 (15) ◽  
pp. 5647-5658 ◽  
Author(s):  
F. Martínez ◽  
M.J. López-Muñoz ◽  
J. Aguado ◽  
J.A. Melero ◽  
J. Arsuaga ◽  
...  
Keyword(s):  
Photocatalytic Oxidation ◽  
Membrane Separation ◽  
Oxidation Processes ◽  
Pharmaceutical Pollutants

Photocatalytic Oxidation of Shenfu Bituminous Coal and Xilinhaote Lignite with H2O2 over TiO2

2011 ◽  
Vol 233-235 ◽  
pp. 1684-1689 ◽  
Author(s):  
Heng Shen Xie ◽  
Zhi Min Zong ◽  
Qing Wei ◽  
Pei Zhi Zhao ◽  
Jian Jun Zhao ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Titanium Dioxide ◽  
Catalytic Oxidation ◽  
Photocatalytic Oxidation ◽  
Bituminous Coal ◽  
Straight Chain ◽  
Photo Catalytic Oxidation ◽  
Alkyl Side Chains ◽  
Lignite Coal ◽  
Oxidation Effect

Shenfu bituminous coal (SFBC) and Xilinhaote lignite (XL) were subject to photo-catalytic oxidation with hydrogen peroxide over titanium dioxide. The reaction mixtures were extracted with acetone exhaustively. The extracts were analyzed with FTIR and GC/MS. The results show that coals be oxidized selectively and degraded partially. Compared with the bituminite coal, the oxidation effect of the lignite coal with active hydrogens is more obvious. The alkyl side chains of the macromolecules, particularly, chains of methyl, methylene and aromatic, are the most vulnerable in relation to other compounds in coals. Moreover, the increasing of straight-chain alkanes and the decreasing of condensed nucleus in SFBC and XL through oxidation suggest that the oxidation is an effective method of coal utilization with no difficultly, also be friendly towards the environment after treated as well as in the process of the treatment.

Carbon-modified TiO2 as Photocatalysts

2010 ◽  
Vol 13 (3) ◽  
Author(s):  
Magdalena Janus ◽  
Antoni W. Morawski
Keyword(s):  
Carbon Dioxide ◽  
Titanium Dioxide ◽  
Advanced Oxidation Processes ◽  
Uv Light ◽  
Pure Titanium ◽  
Light Irradiation ◽  
Oxidation Processes ◽  
Uv Light Irradiation ◽  
Ultraviolet Light Irradiation ◽  
Long Time

AbstractPhotocatalysis belongs to one of the Advanced Oxidation Processes (AOP). These processes make possible the decomposition of organic compounds to carbon dioxide and water. The most useful photocatalyst is titanium dioxide which, to make it active, requires irradiation with suitable wavelengths. Pure titanium dioxide can be activated only by ultraviolet light irradiation (UV). For a long time, studies have been carried on modified titanium dioxide materials to obtain more effective photocatalysts with greater activity under UV light irradiation or to obtain photocatalysts which may be active also under visible light irradiation. One of the possible ways for modifying TiO

Advances in Wastewater Treatment II

2021 ◽  
Keyword(s):  
Wastewater Treatment ◽  
Photocatalytic Degradation ◽  
Organic Molecules ◽  
Pharmaceutical Compounds ◽  
Oxidation Processes ◽  
Degradation Processes

The book reviews advanced methods of wastewater treatments. Included are oxidation processes for the degradation of organic molecules; applications of nanomaterials and nanocomposites in membrane-based processes; design of adsorption columns; photocatalytic degradation processes; and the removal of dyes, pesticides and pharmaceutical compounds.

Treatment of pharmaceutical wastewater by combination of electrocoagulation, electro-fenton and photocatalytic oxidation processes

2020 ◽  
Vol 8 (3) ◽  
pp. 103777 ◽  
Author(s):  
Gizem Başaran Dindaş ◽  
Yasemin Çalışkan ◽  
Emin Ender Çelebi ◽  
Mesut Tekbaş ◽  
Nihal Bektaş ◽  
...  
Keyword(s):  
Photocatalytic Oxidation ◽  
Pharmaceutical Wastewater ◽  
Oxidation Processes

scholarly journals Catalytic and photocatalytic oxidation of diphenyl sulphide to diphenyl sulfoxide over titanium dioxide doped with vanadium, zinc, and tin

RSC Advances ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 4023-4031 ◽  
Author(s):  
Marcelina Radko ◽  
Andrzej Kowalczyk ◽  
Paweł Mikrut ◽  
Stefan Witkowski ◽  
Włodzimierz Mozgawa ◽  
...  
Keyword(s):  
Titanium Dioxide ◽  
Phase Transitions ◽  
Uv Radiation ◽  
Photocatalytic Oxidation ◽  
S Oxidation

Phase transitions of rutile and anatase were directed by V, Zn and Sn admixtures. Rutile containing catalysts were more active in Ph2S oxidation than pure anatase samples. Efficiency of Ph2S oxidation was significantly improved under UV radiation.

Gas-phase photocatalytic oxidation of benzene over titanium dioxide loaded on Ce0.67Zr0.33O2

2009 ◽  
Vol 28 (4) ◽  
pp. 519-524 ◽  
Author(s):  
Zhong Junbo ◽  
Jiang Weidong ◽  
Xu Bin ◽  
He Xiyang ◽  
Li Jianzhang ◽  
...  
Keyword(s):  
Titanium Dioxide ◽  
Gas Phase ◽  
Photocatalytic Oxidation ◽  
Oxidation Of Benzene
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