Photoredox properties of ultrafine rutile TiO2 acicular powder in aqueous 4-chlorophenol, Cu–EDTA and Pb–EDTA solutions

Kim, Sun–Jae; Lee, Hee-Gyoun; Kim, Seon-Jin; Lee, Jong-Kuk; Lee, Eun Gu

doi:10.1016/s0926-860x(02)00515-x

Cited by 33 publications

(14 citation statements)

References 26 publications

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“…Recently, new preparation methods that generate R nanoparticles with sizes less than 10 nm have allowed direct comparisons of A and R nanoparticles with comparable surface areas. Numerous studies show that R nanoparticles with sizes similar to those of A nanoparticles have comparable or even greater photoactivities [1157,1330,1478,1542,[1545][1546][1547][1548][1549][1550][1551][1552]. For example, Sun and coworkers [1330] showed that the activity of 7 nm sized R nanoparticles was greater than that of comparable A nanoparticles for phenol photodegradation, an observation they linked to a greater population of OH groups on the former.…”

Section: Anatase Versus Rutilementioning

confidence: 99%

A surface science perspective on TiO2 photocatalysis

Henderson

2011

Surface Science Reports

1,855

1,634

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a b s t r a c tThe field of surface science provides a unique approach to understanding bulk, surface and interfacial phenomena occurring during TiO 2 photocatalysis. This review highlights, from a surface science perspective, recent literature that provides molecular-level insights into photon-initiated events occurring at TiO 2 surfaces. Seven key scientific issues are identified in the organization of this review. These are: (1) photon absorption, (2) charge transport and trapping, (3) electron transfer dynamics, (4) the adsorbed state, (5) mechanisms, (6) poisons and promoters, and (7) phase and form. This review ends with a brief examination of several chemical processes (such as water splitting) in which TiO 2 photocatalysis has made significant contributions in the literature.

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Section: Anatase Versus Rutilementioning

confidence: 99%

A surface science perspective on TiO2 photocatalysis

Henderson

2011

Surface Science Reports

1,855

1,634

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“…2,5 However, there are studies that show that rutile nanoparticles synthesized at low temperatures show similar activity but may catalyze different reaction paths compared with anatase. [6][7][8] A way of further improving the effectiveness of crystalline titania for photocatalytic oxidation is to prepare it in a mesoporous form. 9 A similar benefit has been shown for dye-sensitized solar cells.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of nanoparticulate anatase and rutile crystallites at low temperatures in the Pluronic F127 microemulsion system

et al. 2011

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“…A high power and energy demanding light source is no longer suitable for an increasingly energy efficient world. Much of the literature has shown experimental designs which utilise ≥500W medium/high pressure lamps [28][29][30][31]. These lamps are impractical for industrial applications due to their fragility and are not essential for high efficiency photocatalysis.…”

Section: Introductionmentioning

confidence: 99%

Development of a doped titania immobilised thin film multi tubular photoreactor

Adams¹,

Skillen²,

McCullagh³

et al. 2013

Applied Catalysis B: Environmental

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CopyrightItems in 'OpenAIR@RGU', Robert Gordon University Open Access Institutional Repository, are protected by copyright and intellectual property law. If you believe that any material held in 'OpenAIR@RGU' infringes copyright, please contact openair-help@rgu.ac.uk with details. The item will be removed from the repository while the claim is investigated. "NOTICE: this is the author's version of a work that was accepted for publication in Applied Catalysis B: Environmental. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in APPLIED CATALYSIS B: ENVIRONMENTAL, [VOL 130, (2013) ABSTRACTThis paper describes a novel doped titania immobilised thin film tubular photoreactor which has been developed for use with liquid, vapour or gas phase media. The current approach to photocatalyst and photoreactor development is firmly based on the principles of surface area. This dictate greatly limits the applicability of any semi-conductor photocatalyst in industrial applications, as a large surface area equates to a powder catalyst. This work aims to show that the development of a thin film coating, doped with a rare earth element, and a novel photoreactor design produces a photocatalytic degradation of a model pollutant (Methyl Orange) equal to that of P25 TiO 2 . It will show that doped thin film tubes in a novel reactor configuration can produce a degradation rate of 95 % after 90 minutes under UV irradiation and 70 % under visible irradiation with no downstream processing required. The use of lanthanide doping is reported here in the titania sol gel as it is thought to increase the electron hole separation therefore widening the potential useful wavelengths within the electromagnetic spectrum. Increasing doping from 0.5 % to 1.0 % increased photocatalytic degradation by ~17 % under visible irradiation. A linear relationship has been seen between increasing reactor volume and degradation which would not normally be observed in a typical suspended reactor system.

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Photoredox properties of ultrafine rutile TiO2 acicular powder in aqueous 4-chlorophenol, Cu–EDTA and Pb–EDTA solutions

Cited by 33 publications

References 26 publications

A surface science perspective on TiO2 photocatalysis

A surface science perspective on TiO2 photocatalysis

Synthesis of nanoparticulate anatase and rutile crystallites at low temperatures in the Pluronic F127 microemulsion system

Development of a doped titania immobilised thin film multi tubular photoreactor

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