Photoelectrocatalytic degradation of 3-nitrophenol at surface of Ti/TiO2 electrode

Ojani, Reza; Raoof, Jahan Bakhsh; Khanmohammadi, Akbar; Zarei, Ebrahim

doi:10.1007/s10008-012-1853-x

Cited by 15 publications

(4 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Most of the materials used for photo-electrocatalytic degradation of pollutants are titanium dioxide (TiO 2 ) and zinc oxide (ZnO). − TiO 2 and ZnO are considered as semiconductors with a wide band gap ( E g = 3.2 and 3.4 eV for TiO 2 anatase and ZnO, respectively). Titanium dioxide remains one of the most promising materials due to its high oxidation efficiency, nontoxicity, high photostability, chemical inertness, and environmentally friendly nature. ,, Another advantage of TiO 2 is its low cost, owing to the abundance of Ti (0.44% of Earth’s crust). , With worldwide reserves in excess of 600 million tons, the annual production of Ti metal is approximately 90 000 tons and the annual production of TiO 2 is around 4.3 million tons .…”

Section: Introductionmentioning

confidence: 99%

Modified TiO₂ For Environmental Photocatalytic Applications: A Review

Daghrir

Drogui

Robert

2013

Ind. Eng. Chem. Res.

1,385

611

View full text Add to dashboard Cite

This paper summarizes recent research dealing with development of titanium dioxide (TiO2) used for environmental applications. TiO2 plays the most important role owing to its excellent chemical and physical properties. However, the TiO2 band edge lies in the UV region that makes them inactive under visible irradiation. In this regard, considerable efforts have been made to increase the visible light activity of TiO2 via the modification of its electronic and optical properties. Doping TiO2 using either anions or cations is one of the typical approaches that has been largely applied. Coupling TiO2 with a narrow bad gap semiconductor (M x O y /TiO2 or M x S y /TiO2) represents another approach. This work aims to encompass the new progress of TiO2 for an efficient application in water and wastewater treatment under visible light, emphasizes the future trends of TiO2 in the environment, and suggests new research directions, including preparation aspects for the development of this promising material.

show abstract

Section: Introductionmentioning

confidence: 99%

Modified TiO₂ For Environmental Photocatalytic Applications: A Review

Daghrir

Drogui

Robert

2013

Ind. Eng. Chem. Res.

1,385

611

View full text Add to dashboard Cite

show abstract

“…The photoelectrochemical technology with external potential seems promising for research on photocatalytic degradation of organic pollutants, and many academic studies have been focused on this area [22][23][24][25][26][27][28][29][30]. Cresols are persistent compounds and are poisonous to a wide range of living beings.…”

Section: Introductionmentioning

confidence: 99%

Electrochemically assisted photocatalytic removal of m-cresol using TiO2 thin film-modified carbon sheet photoelectrode

Zarei

2018

Int J Ind Chem

Self Cite

View full text Add to dashboard Cite

In this study, removal of m-cresol has been performed using photoeletrocatalysis technique at the surface of titanium dioxide (TiO 2) thin film-modified carbon sheet photoelectrode. A biased potential was applied across this photoelectrode illuminated by UV light to investigate the feasibility of an electrochemically assisted photocatalytic process in this degradation. For preparation of this photoelectrode, the photocatalytically active TiO 2 thin film was covered on the carbon sheet by dip coating technique using economically accessible TiO 2 powder (Degussa P25). It was found that the m-cresol could be degraded more efficiently by this photoelectrocatalytic process than the degradation obtained by photocatalytic oxidation or by electrochemical oxidation or alone. The effect of various parameters, such as m-cresol concentration, pH and applied potential on the photoelectrocatalytic degradation of m-cresol was studied and discussed. Keywords m-Cresol • Degradation • Electrochemically assisted photocatalysis • TiO 2 thin film * Ebrahim Zarei

show abstract

“…Most of the research works about TiO 2 are about degrading materials with this photocatalyst [1][2][3][4]. However, the photo-assisted electrocatalytic determination with this photocatalyst has not been studied so far.…”

Section: Introductionmentioning

confidence: 99%

Ti/TiO2 nanotube array electrode as a new sensor to photoelectrocatalytic determination of ethylene glycol

2016

Self Cite

View full text Add to dashboard Cite

The photoelectrocatalytic oxidation behaviour of ethylene glycol (EG) was studied in the present work using the TiO 2 -modified Ti foil (Ti/TiO 2 ) electrode. The Ti/TiO 2 nanotube array (Ti-NTA) electrode was prepared by anodizing of the Ti foil in the HF aqueous solution (0.2% v/v). The anodization was conducted in the constant 30 V for 2 h, and then the as-prepared Ti-NTA electrode was calcinated at 50 • C for 2 h. The surface morphology of Ti-NTA electrode was studied using scanning electron microscopy images. For EG determination, the photocurrent of EG (EG oxidation current in the UV irradiation) was assessed using the hydrodynamic photoamperometric method in the phosphate buffers. Ultimately, the optimum conditions of EG determination were studied in various pH values and applied bias potentials, and the pH = 3.0 and E = 1.0 V (vs. reference electrode) were determined as the optimum conditions. It was found that the photocurrent of EG was linearly dependent on the concentration of EG in the range of 3.0 × 10 −5 to 0.88 mol l −1 , and the detection limit of EG determination was found to be 7.2 × 10 −6 mol l −1 (3σ ).

show abstract

Photoelectrocatalytic degradation of 3-nitrophenol at surface of Ti/TiO2 electrode

Cited by 15 publications

References 27 publications

Modified TiO₂ For Environmental Photocatalytic Applications: A Review

Modified TiO₂ For Environmental Photocatalytic Applications: A Review

Electrochemically assisted photocatalytic removal of m-cresol using TiO2 thin film-modified carbon sheet photoelectrode

Ti/TiO2 nanotube array electrode as a new sensor to photoelectrocatalytic determination of ethylene glycol

Contact Info

Product

Resources

About

Photoelectrocatalytic degradation of 3-nitrophenol at surface of Ti/TiO2 electrode

Cited by 15 publications

References 27 publications

Modified TiO2 For Environmental Photocatalytic Applications: A Review

Modified TiO2 For Environmental Photocatalytic Applications: A Review

Electrochemically assisted photocatalytic removal of m-cresol using TiO2 thin film-modified carbon sheet photoelectrode

Ti/TiO2 nanotube array electrode as a new sensor to photoelectrocatalytic determination of ethylene glycol

Contact Info

Product

Resources

About

Modified TiO₂ For Environmental Photocatalytic Applications: A Review

Modified TiO₂ For Environmental Photocatalytic Applications: A Review