Effects of I and F codoped TiO2 on the photocatalytic degradation of methylene blue

Chen, Wen; Zhu, Yunlong; Kanbara, Takaki; Zhu, Hua; Xiao, Changfa

doi:10.1016/j.desal.2009.01.028

Cited by 92 publications

(39 citation statements)

References 30 publications

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“…OH radicals. Wen et al (2009) indicated that no significant changes on the photocatalytic degradation of MB were observed as the calcination temperature increases from 500°C to 600°C. The degradation rates were higher in the case of Co doped TiO 2 calcined at 500°C and 600°C, compared with that of one calcined at 700°C.…”

Section: Film Fabrication Technique and Calcination Temperaturementioning

confidence: 88%

“…Zheng et al (2007) noticed that the coupled ZrO 2 -ZnO system with 2.5% Zr was more efficient compared with ZnO for the degradation of reactive Brilliant Red X-3B. Wen et al (2009) investigated the effects of I and F codoped TiO 2 (prepared by sol-gel-impregnation method) on the photocatalytic degradation of MB. Co doping with I and F was shown to enhance the degradation of MB under simulated sunlight irradiation.…”

Section: Doping and Mixed Semiconductormentioning

confidence: 99%

See 1 more Smart Citation

Advances in Heterogeneous Photocatalytic Degradation of Phenols and Dyes in Wastewater: A Review

Ahmed

Rasul

Martens

et al. 2010

Water Air Soil Pollut

367

138

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The heterogeneous photocatalytic water purification process has gained wide attention due to its effectiveness in degrading and mineralizing the recalcitrant organic compounds as well as the possibility of utilizing the solar UV and visible light spectrum. This paper aims to review and summarize the recently published works in the field of photocatalytic oxidation of toxic organic compounds such as phenols and dyes, predominant in wastewater effluent. In this review, the effects of various operating parameters on the photocatalytic degradation of phenols and dyes are presented. Recent findings suggested that different parameters, such as type of photocatalyst and composition, light intensity, initial substrate concentration, amount of catalyst, pH of the reaction medium, ionic components in water, solvent types, oxidizing agents/ electron acceptors, mode of catalyst application, and calcinations temperature can play an important role on the photocatalytic degradation of organic compounds in water environment. Extensive research has focused on the enhancement of photocatalysis by modification of TiO 2 employing metal, non-metal, and ion doping. Recent advances in TiO 2 photocatalysis for the degradation of various phenols and dyes are also highlighted in this review.

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Section: Film Fabrication Technique and Calcination Temperaturementioning

confidence: 88%

Section: Doping and Mixed Semiconductormentioning

confidence: 99%

Advances in Heterogeneous Photocatalytic Degradation of Phenols and Dyes in Wastewater: A Review

Ahmed

Rasul

Martens

et al. 2010

Water Air Soil Pollut

367

138

View full text Add to dashboard Cite

show abstract

“…Co-doped TiO 2 shifts the absorption edge of TiO 2 successfully from ultraviolet region to visible light region. The co-doping technique also improves the physical properties of the TiO 2 such as specific surface area and crystallite size while it sustains the phase transformation of anatase to rutile phase [94]. Improved performance of TiO 2 under visible light is achieved up to an optimal doping level, after which performance deteriorates when the dopants become recombination centers for photogenerated electron-hole pairs [95].…”

Section: Effect Of Codopingmentioning

confidence: 99%

“…It was attributed to the formation of anatase phase from titanate. However, beyond the optimum calcination temperature, the photocatalytic activity of photocatalyst is observed to decrease due to the agglomeration and sintering damage of Fe-TiO 2 at high temperature [94]. Huang et al [58] studied the effect of calcination temperature on the photocatalytic activity of Pt-doped TiO 2 .…”

Section: Effect Of Calcination Temperature Of Nano-doped-tiomentioning

confidence: 99%

An Overview on the Photocatalytic Activity of Nano-Doped-TiO2 in the Degradation of Organic Pollutants

Tan

Wong

Mohamed

2011

ISRN Materials Science

112

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This paper aims to review and summarize the recent works on the photocatalytic degradation of various organic pollutants in the presence of nano-doped-TiO 2 photocatalysts. In this regard, three main aspects are examined: (a) the presence of various dopants (metal dopants, nonmetal dopants, halogen dopants, metalloid dopants, and codopants) in the formation of nano-doped-TiO 2 photocatalysts, (b) the effect of the presence of dopants on the photocatalytic degradation of organic pollutants, and (c) the effects of various operating parameters on the photocatalytic degradation of organic pollutants in the presence of nano-doped-TiO 2 photocatalysts. Reports resulted suggest that the formation of a high percentage of the anatase phase, small crystallite size, and high specific surface area of the nano-doped-TiO 2 photocatalysts depends on the presence of various dopants in the photocatalysts. The majority of the dopants have the potential to improve the photocatalytic efficiency of nano-doped-TiO 2 in the degradation of organic pollutants. The photocatalytic degradation of organic compounds depends on the calcination temperature of the prepared doped TiO 2 , initial reactant concentration, dosage of doped TiO 2 , and dopant doping concentration.

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“…[11][12][13][14] and non-metal anions (C, N, F, S, B, etc.) [15][16][17][18] have been utilized as dopants with some success. Recently, heterostructures (e.g.…”

Section: Introductionmentioning

confidence: 99%

Physiochemical properties of n-n heterostructured TiO₂/Mo-TiO₂ composites and their photocatalytic degradation of gaseous toluene

Cui

Pan

Tang

et al. 2017

Chemical Speciation & Bioavailability

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The composite TiO 2 /Mo-TiO 2 were prepared by a modified sol-gel method. The prepared catalysts were characterized by X-ray diffraction, BET analysis, SEM, X-ray photoelectron spectroscopy, and UV-vis diffused reflectance spectroscopy techniques. The structural characterization results demonstrated that Mo was successfully doped into the TiO 2 lattice and caused slight changes in the physiochemical properties. The UV-vis DRS showed a red shift of the adsorption edge to the visible region. The photocatalytic decomposition efficiencies of the catalysts were examined with toluene as a typical VOC in a continuous flow reactor. The photocatalytic activity of the n-n heterogeneous TiO 2 /Mo-TiO 2 was greater than that of pure TiO 2 and Mo-TiO 2 , and the catalyst containing a Mo/Ti mole ratio of 2.5% exhibited optimum photocatalytic properties. In general, a relative humidity of 35%, a higher oxygen content, a lower initial toluene concentration, and a higher UV intensity were beneficial for toluene decomposition.

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Effects of I and F codoped TiO2 on the photocatalytic degradation of methylene blue

Cited by 92 publications

References 30 publications

Advances in Heterogeneous Photocatalytic Degradation of Phenols and Dyes in Wastewater: A Review

Advances in Heterogeneous Photocatalytic Degradation of Phenols and Dyes in Wastewater: A Review

An Overview on the Photocatalytic Activity of Nano-Doped-TiO2 in the Degradation of Organic Pollutants

Physiochemical properties of n-n heterostructured TiO₂/Mo-TiO₂ composites and their photocatalytic degradation of gaseous toluene

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Effects of I and F codoped TiO2 on the photocatalytic degradation of methylene blue

Cited by 92 publications

References 30 publications

Advances in Heterogeneous Photocatalytic Degradation of Phenols and Dyes in Wastewater: A Review

Advances in Heterogeneous Photocatalytic Degradation of Phenols and Dyes in Wastewater: A Review

An Overview on the Photocatalytic Activity of Nano-Doped-TiO2 in the Degradation of Organic Pollutants

Physiochemical properties of n-n heterostructured TiO2/Mo-TiO2 composites and their photocatalytic degradation of gaseous toluene

Contact Info

Product

Resources

About

Physiochemical properties of n-n heterostructured TiO₂/Mo-TiO₂ composites and their photocatalytic degradation of gaseous toluene