Preparation and heterogeneous photocatalytic activity of mesoporous H3PW12O40/ZrO2 composites

Qu, Xuesong; Guo, Yihang; Hu, Changwen

doi:10.1016/j.molcata.2006.08.026

Cited by 72 publications

(29 citation statements)

References 13 publications

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“…The phase structures, chemical structures, optical absorption properties, surface physicochemical properties, and morphologies of the composites were well-characterized via X-ray diffraction (XRD) patterns, FT-IR spectroscopy, Raman scattering spectroscopy, UV-Vis diffuse reflectance spectroscopy (UVVis/DRS), nitrogen adsorption/desorption determination, and field emission scanning electron microscopy (FESEM), indicating that the primary Keggin structure remained intact after formation of the composites, and impregnation of the Keggin unit into the surface of ZrO 2 framework has an influence on the electronic properties of the ZrO 2 . The heterogeneous photocatalytic activity of as-prepared composites was studied via the model reactions of degradation of an aqueous 4-nitrophenol (4-NP) and dye methylene blue (MB) under aerobic condition, indicating that the photocatalytic activity of the composites was influenced by the factors such as phase structures, optical absorption properties, and surface physicochemical properties of the composites [187].…”

Section: Preparation and Heterogeneous Photocatalytic Activity Of Mesmentioning

confidence: 99%

Recent developments in use of heteropolyacids, their salts and polyoxometalates in organic synthesis

Heravi

Sadjadi

2009

JICS

111

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Heteropolyacids, their salts and polyoxometalates have been used as catalysts in wide range of organic reactions such as multi components, oxidation, reductions, electrochemical and photochemical reactions. There have been tremendous and continued efforts to modify the catalytic performance of heteropoly acids such as supporting them on MCM, silica gel, etc. In this review, we have attempted to bring some of new applications of heteropolyacids in organic reactions and recent approaches on modifying them, into focus.

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Section: Preparation and Heterogeneous Photocatalytic Activity Of Mesmentioning

confidence: 99%

Recent developments in use of heteropolyacids, their salts and polyoxometalates in organic synthesis

Heravi

Sadjadi

2009

JICS

111

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“…POMs exhibit UV-light photocatalytic activity in a homogeneous system [7]. In fact, many of POMs share very similar photochemical characteristics with the semiconductor photocatalysts.…”

Section: Introductionmentioning

confidence: 99%

RETRACTED ARTICLE: Kinetic and anion degradation products study on photocatalytic degradation of reactive orange 5 solution with phosphotungstic acid

Zhong

Zhao

et al. 2008

Open Chemistry

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Increasing environmental pollution caused by toxic dyes is a matter of great concern due to their hazardous nature. So it is crucial to develop processes which can destroy these dyes effectively. It has been generally agreed that reactive orange 5 (KGN) can be effectively degraded in aerated phosphotungstic acid (HPA) in a homogeneous reaction system using near-UV irradiation. In this paper, photocatalytic degradation of reactive orange 5 solutions with phosphotungstic acid was investigated, especially more attention was paid to the kinetic model and the anion degradation products. The results revealed that the photocatalytic degradation reaction of KGN with HPA in a homogenous solution can be described by Langmuir-Hinshelwood equation and Langmuir-Hinshewood kinetic model described it well. The reaction manifested the first order with lower concentration(≤30 mg L , respectively. The degradation mechanism of KGN with HPA is different from that with TiO 2 , the anion products of the two reaction systems are the same. The difference in degradation mechanism of KGN with HPA from that with TiO 2 is caused by the nature of the photocatalyst. Warsaw and Springer-Verlag Berlin Heidelberg. © Versita

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“…The presence of the HPA on the ZrO 2 surface gave rise to a redshift in the absorption spectrum of the material and hence to a narrowing of the band gap. [78] Furthermore, the mesoporosity and homogeneous dispersion of the HPA on the oxide surface played important roles in improving the photocatalytic degradation of 4-nitrophenol and the methylene blue dye. The composites showed the best photocatalytic activity at HPA loadings not higher than 15 wt.-%, and they were more active than both the bare HPA and ZrO 2 .…”

Section: ·-mentioning

confidence: 99%

Heteropolyacid‐Based Materials as Heterogeneous Photocatalysts

Marcı̀¹,

García‐López²,

Palmisano³

2014

Eur J Inorg Chem

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Preparation and heterogeneous photocatalytic activity of mesoporous H3PW12O40/ZrO2 composites

Cited by 72 publications

References 13 publications

Recent developments in use of heteropolyacids, their salts and polyoxometalates in organic synthesis

Recent developments in use of heteropolyacids, their salts and polyoxometalates in organic synthesis

RETRACTED ARTICLE: Kinetic and anion degradation products study on photocatalytic degradation of reactive orange 5 solution with phosphotungstic acid

Heteropolyacid‐Based Materials as Heterogeneous Photocatalysts

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