Photocatalytic degradation of 2-mercaptobenzothiazole in aqueous La3+–TiO2 suspension for odor control

Li, F.B; Li, X.Z; Hou, Meifang

doi:10.1016/j.apcatb.2003.10.003

Cited by 275 publications

(112 citation statements)

References 23 publications

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“…4b), agreeing with the O 1s electron binding energy of TiO 2 and CeO 2 . There were two other peaks nearby: one at 530.86 eV (Peak B) representing the surfaceadsorbed O atoms, and the other at 532.04 eV (Peak A) representing the hydroxyl O atoms [22].…”

Section: Article In Pressmentioning

confidence: 99%

“…Results indicated that five elements, namely, Ti, O, N, Ce and C, were present together on the TiO 2 surface. N and Ce came from the doping solution, and C probably originated from the calcination residue of organic materials [22]. Fig.…”

Section: Xps Analysismentioning

confidence: 99%

“…It was reported that nitrogen and lanthanum codoped TiO 2 nanoparticles showed a superior photocatalytic activity on degradation of methyl orange under visible light irradiation compared to N-doped or La-doped TiO 2 [10,11]. The N-F codoped TiO 2 Doping TiO 2 with lanthanide element has attracted increasing attention due to their special 4f electron configuration [13][14][15][16][17][18][19][20][21][22]. Lanthanide ions could form complexes with various Lewis bases in the interaction of the functional groups with their f-orbital, enhancing the photocatalytic activity.…”

Section: Introductionmentioning

confidence: 99%

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Characterization and activity of visible-light-driven TiO2 photocatalyst codoped with nitrogen and cerium

Liu

Tang

Chen

et al. 2008

Journal of Solid State Chemistry

172

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Nitrogen and cerium codoped TiO 2 photocatalysts were prepared by a modified sol-gel process with doping precursors of cerium nitrate and urea, and characterized by X-ray diffraction (XRD), thermogravimetry-differential scanning calorimetry (TG-DSC), X-ray photoelectron spectra (XPS) and ultraviolet-visible light diffuse reflectance spectra (UV-vis DRS). Results indicate that anatase TiO 2 is the dominant crystalline type in as-prepared samples, and CeO 2 crystallites appear as the doping ratio of Ce/Ti reaches to 3.0 at%. The TiO 2 starts to transform from amorphous phase to anatase at 987.1 K during calcination, according to the TG-DSC curves. The XPS show that three major metal ions of Ce 3+ , Ce 4+ , Ti 4+ and one minor metal ion of Ti 3+ coexist on the surface. The codoped TiO 2 exhibits significant absorption within the range of 400-500 nm compared to the non-doped and only nitrogen-doped TiO 2 . The enhanced photocatalytic activity of the codoped TiO 2 is demonstrated through degradation of methyl orange under visible light irradiation. r

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Section: Article In Pressmentioning

confidence: 99%

Section: Xps Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Characterization and activity of visible-light-driven TiO2 photocatalyst codoped with nitrogen and cerium

Liu

Tang

Chen

et al. 2008

Journal of Solid State Chemistry

172

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“…Metal-ion doping is another popular method to make visible-light-active TiO 2 -based photocatalysts. In many cases, however, these suffer from a serious deterioration in their photocatalytic performance because the metal ions themselves can act as the recombination centers of e -and h + [28][29][30]. It has been demonstrated recently that doping with non-metals, including N, C, P, and S, can be useful in preparing visible-light-active TiO 2 -based photocatalysts, even though an understanding of the origin of the enhanced activity is still controversial [27,[31][32][33][34].…”

Section: Introductionmentioning

confidence: 99%

Self-assembly and photocatalysis of mesoporous TiO2 nanocrystal clusters

et al. 2010

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Mesoporous nanocrystal clusters of anatase TiO 2 with large surface area and enhanced photocatalytic activity have been successfully synthesized. The synthesis involves the self-assembly of hydrophobic TiO 2 nanocrystals into submicron clusters, coating of these clusters with a silica layer, thermal treatment to remove organic ligands and improve the crystallinity of the clusters, and finally removing silica to expose the mesoporous catalysts. With the help of the silica coating, the clusters not only maintain their small grain size but also keep their mesoporous structure after calcination at high temperatures (with BET surface area as high as 277 m 2 /g). The etching of SiO 2 also results in the clusters having high dispersity in water. We have been able to identify the optimal calcination temperature to produce TiO 2 nanocrystal clusters that possess both high crystallinity and large surface area, and therefore show excellent catalytic efficiency in the decomposition of organic molecules under illumination by UV light. Convenient doping with nitrogen converts these nanocrystal clusters into active photocatalysts in both visible light and natural sunlight. The strategy of forming well-defined mesoporous clusters using nanocrystals promises a versatile and useful method for designing photocatalysts with enhanced activity and stability.

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“…Titanium dioxide (TiO2) is one of the most suitable photocatalysts for environmental application because of its biological and chemical inertness, strong oxidizing power, nontoxicity, and long-term stability against photo and chemical corrosion (Li et al, 2004;Yu et al, 2003).…”

Section: Photocatalyst Of Tio2 Zno and Tio2/znomentioning

confidence: 99%

Performance of advanced oxidation processes to treat the petroleum wastewater A review

2017

Issue 3

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The objective of this study is to summarize studies and investigations about advanced oxidation processes (AOPs) used for the treatment of petroleum wastewater, which mainly contained oil, organic matter and other compounds. The big difference was shown in the specification of wastewater among the investigated studies and a wide variety of pollutants at varying concentrations. The most compounds in petroleum wastewater were the mixture of hydrocarbons and inorganic compounds. Advanced oxidation processes (AOPs) have a capability of rapid degradation of recalcitrant pollutants in the aquatic environment. However, the literature regarding petroleum wastewater treatment is very little and advanced oxidation processes (AOPs) are still not being used on an industrial scale in oil refineries. Most studies were focused on the degradation of some pollutants found in the petroleum wastewater such as sulphides, ammonia, phenols and organic materials. This review focused on works that investigated advanced oxidation processes (AOPs) by monitoring general petroleum wastewater parameters such as TOC, COD, BOD, oil, and phenols. It presented an overview of photocatalytic degradation of pollutants in petroleum wastewater and highlighted the basics of these processes including the optimum parameters.

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Photocatalytic degradation of 2-mercaptobenzothiazole in aqueous La3+–TiO2 suspension for odor control

Cited by 275 publications

References 23 publications

Characterization and activity of visible-light-driven TiO2 photocatalyst codoped with nitrogen and cerium

Characterization and activity of visible-light-driven TiO2 photocatalyst codoped with nitrogen and cerium

Self-assembly and photocatalysis of mesoporous TiO2 nanocrystal clusters

Performance of advanced oxidation processes to treat the petroleum wastewater A review

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