Evaluating the activities of immobilized TiO2 powder films for the photocatalytic degradation of organic contaminants in water

Balasubramanian, Ganesh; Dionysiou, Dionysios D.; Suidan, Makram T.; Baudin, I.; Laîné, J.M.

doi:10.1016/j.apcatb.2003.04.002

Cited by 279 publications

(139 citation statements)

References 25 publications

Supporting

Mentioning

129

Contrasting

Unclassified

Order By: Relevance

“…Therefore, it is necessary to pretreat the plates. Various processes have been used to increase the surface roughness of the substrate, including mechanical, thermal, chemical or combination treatment techniques [4,20]. Many researchers prefer to use a combination of thermal and chemical treatments because they significantly increase surface roughness.…”

Section: Photocatalytic Degradation Of Methylene Bluementioning

confidence: 99%

141 Induction Heating of TiO 2 Coating on SS Substrate for Photocatalysis 2016 60 3 Induction Heating Consolidation of TiO 2 Sol-Gel Coating on Stainless Steel Support for Photocatalysis Applications

Vásquez

Jerez

Schrebler

et al. 2016

Period. Polytech. Chem. Eng.

View full text Add to dashboard Cite

IntroductionThe remission of toxic contaminants and the use of clean energy, such as the energy of the sun, for this purpose have become popular topics for many research teams. The development of any nation in the world demands a better and major use of energy that must be efficient and have a low environmental impact. Wastewater treatment via an advanced oxidation process, which uses toxic elements from organic sources, is one of the aims of photocatalysis. The process has a high efficiency for neutralizing these toxic compounds and presents the opportunity to produce electrodes that are compatible with the environment [1]. The capability of the electrodes, chemistry process, associated cost effects and the product lifetime are related to the type of material used, and to its structure, stability, and porosity, the substrate material and shape, and the successful adhesion of the coating. These factors must be improved to reach a massive industrial application of this process. Many other factors can affect the stability of the electrode, such as substrate preparation (in particular with metallic support), the inclusion of a dopant, the solvent involved in the synthesis of the electrodes, the preparation methods and the parameters of thermal decomposition (temperature, heating rate and time) [2].Titanium oxide is one of the most studied materials for photocatalysis applications because it exhibits highly photocatalytic properties and is stable, non-toxic and relatively cheap to produce. The most efficient form of use is via the commercial nanopowders called Degussa P-25 TiO 2 [3]. However, the use of these nanopowders generates secondary costs, associate with the need for a high cost filter system to separate the particles from the treated water. To avoid this problem, studies have been conducted to obtain a material supported by a substrate that can be reused, but it must also withstand the reactor conditions during treatment. Simultaneously, these studies have tried to improve the photocatalytic activity of the material by improving the anatase phase stability, porosity distribution, superficial contact area and other variables [4,5,6,7,8]. Numerous substrates have been studied and used to fabricated these types of electrodes, including stainless steel, paper, conductive glass, titanium, ceramic foam, TiO 2 nanoneedle/nanoribbon

show abstract

Section: Photocatalytic Degradation Of Methylene Bluementioning

confidence: 99%

141 Induction Heating of TiO 2 Coating on SS Substrate for Photocatalysis 2016 60 3 Induction Heating Consolidation of TiO 2 Sol-Gel Coating on Stainless Steel Support for Photocatalysis Applications

Vásquez

Jerez

Schrebler

et al. 2016

Period. Polytech. Chem. Eng.

View full text Add to dashboard Cite

show abstract

“…There is a clear benefit in using such a simple method for production of anodes relative to other methods of catalyst deposition [35][36][37][38][39][40][41][42]. This system uses undoped TiO 2 on an inexpensive carbon ink base with a cast solvent procedure and operates at room temperature.…”

Section: Voltammetric Characterisation Of Formic Acidmentioning

confidence: 99%

A practical photoelectrochemical cell using non precious metal electrodes

2010

View full text Add to dashboard Cite

In this study a Photoelectrochemical Cell (PEC) constructed with inexpensive materials photodegraded selected organic compounds present in model waste waters, with the concomitant production of electrical current. Organic substrates dissolved in salt water included formic acid, 2-propanol, 1,2-dihydroxybenzene and ascorbic acid. Significant degradation of ascorbic acid was achieved when the cell was illuminated with a household 60 W tungsten light bulb, although better results were achieved with UV sources. Degradation of all the compounds was found to occur by zero order kinetics, and the PEC was shown not to work appreciably in dark conditions. Using a conventional light bulb, a formic acid PEC produced a power density of 19.1 ± 2 mW m -2 . When exposed to natural daylight, a power density of 31.5 ± 2 mW m -2 was achieved. There is considerable scope for scale up of this device for exterior use.

show abstract

“…Kod anataz faze ne postoji premošćeni kiseonikov atom i adsorbovane hidroksilne grupe se veoma lako uklanjaju sa trostruko koordiniranog atoma kiseonika, pa mogu da se iskoriste za stvaranje hidroksilnih radikala, povećavajući na taj način brzinu degradacije [148].…”

Section: Kristalna Strukturaunclassified

“…Predstavlja mešavinu anataz i rutil faze i u većini slučajeva pokazuje veću fotokataliticku aktivnost od čistih faza [148,151,152,160,161,162,163,164]. U tabeli 8 data su osnovna svojstva ovog komercijalnog katalizatora [165].…”

Evaluating the activities of immobilized TiO2 powder films for the photocatalytic degradation of organic contaminants in water

Cited by 279 publications

References 25 publications

141 Induction Heating of TiO 2 Coating on SS Substrate for Photocatalysis 2016 60 3 Induction Heating Consolidation of TiO 2 Sol-Gel Coating on Stainless Steel Support for Photocatalysis Applications

141 Induction Heating of TiO 2 Coating on SS Substrate for Photocatalysis 2016 60 3 Induction Heating Consolidation of TiO 2 Sol-Gel Coating on Stainless Steel Support for Photocatalysis Applications

A practical photoelectrochemical cell using non precious metal electrodes

A study of photodegradation of arylazo pyridone dyes

Contact Info

Product

Resources

About