Study on a novel POM-based magnetic photocatalyst: Photocatalytic degradation and magnetic separation

Qiu, Wei; Zheng, Ying; Haralampides, Katy

doi:10.1016/j.cej.2006.08.025

Cited by 42 publications

(20 citation statements)

References 33 publications

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“…The unhomogenized magnetic field in the sigle unit of cylindrical matrix was shown in Fig.3 as a contour map.The result was consistent with the solution drawn from FEM [11]. …”

Section: Magnetic Field Strengthsupporting

confidence: 80%

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Magnetic Field Analysis On A Cylindrical Matrix Of HGMS Through Conform Mapping

Mei¹,

Mo²,

Peng³

et al. 2017

Proceedings of the 2017 2nd Joint International Information Technology, Mechanical and Electronic Engineering Conference (JIMEC

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Magnetic matrix plays a decisive role in the capture efficiency of high-gradient magnetic separation (HGMS) system. This paper took a parallel arranged cylindrical matrix for example,and put forward using conform mapping to calculate the magnetic field distribution in the matrix. After established the simplified two-dimensional analytical model, this paper promoted the procedure of magnetic field analysis through conform mapping,and then analyzed the magnetic field strength and magnetic traction force that derived from this method.The results were consistent with previous studies that mainly adopted Finite Element Method. The method also can be used to determin hydrodynamic drag force that affects the capture efficiency mainly. The study will contribute to further explore the capture mechanism of magnetic particles in high-gradient magnetic separation.

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“…The unhomogenized magnetic field in the sigle unit of cylindrical matrix was shown in Fig.3 as a contour map.The result was consistent with the solution drawn from FEM [11]. …”

Section: Magnetic Field Strengthsupporting

confidence: 80%

“…0≤ x ≤L,-L≤ y ≤L. To facilitate compares and analyzes with others, this paper set parameters of the Cylindrical Matrix for: R = 25nm, and 2d = 70nm, the background magnetic field intensity at 2.3× 10 8 Am -1 [11].…”

Section: An Two-dimensional Model Of the Cylindrical Matrixmentioning

confidence: 99%

Magnetic Field Analysis On A Cylindrical Matrix Of HGMS Through Conform Mapping

Mei¹,

Mo²,

Peng³

et al. 2017

Proceedings of the 2017 2nd Joint International Information Technology, Mechanical and Electronic Engineering Conference (JIMEC

View full text Add to dashboard Cite

show abstract

“…The magnetic field/gradient in a lab-constructed HGMS was modeled and simulated by finite element analysis (FEA) to examine the particle capture feasibility. Experimental results proved that separation efficiency higher than 90.1% could be achieved under investigated conditions, i.e., flow velocity lower than 1.375 mm s -1 under the studied magnetic photocatalyst [182].…”

Section: Pom-based Magnetic Photocatalystmentioning

confidence: 75%

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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“…Recently, photocatalysts on a magnetic support have been proposed to solve this problem (Beydoun et al 2000Fu et al 2006;Kurinobu et al 2007;Lee et al 2006;Qiu et al 2007;Shchukin et al 2004;Watson et al 2002Watson et al , 2005. They are a type of composite often composed of a TiO 2 shell, an insulating silica layer and a magnetic core that makes the photocatalyst recoverable using an external magnetic field.…”

Section: Introductionmentioning

confidence: 99%

Removal of Dyes from Water Using a TiO2 Photocatalyst Supported on Black Sand

Bowden

Brimblecombe

2008

Water Air Soil Pollut

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A TiO 2 photocatalyst was prepared by depositing silica and titanium dioxide on the surface of black sand that made the photocatalyst recoverable using a magnetic field. The magnetic photocatalyst was used to remove six aqueous dyes from water and the removal was attributed to both adsorption and photocatalytic oxidation. Removal by adsorption was more noticeable with the cationic dyes than with the anionic dyes. The difference was related to the electrostatic interaction between the charged dye molecular and the silica-occupied surface of the photocatalyst. Removal by photocatalytic oxidation occurred with anionic dyes, while it was not appreciable with cationic dyes. It was postulated that photocatalytic oxidation might have happened with cationic dyes as well, but the strong adsorption made the photocatalytic oxidation undetectable.

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Study on a novel POM-based magnetic photocatalyst: Photocatalytic degradation and magnetic separation

Cited by 42 publications

References 33 publications

Magnetic Field Analysis On A Cylindrical Matrix Of HGMS Through Conform Mapping

Magnetic Field Analysis On A Cylindrical Matrix Of HGMS Through Conform Mapping

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

Removal of Dyes from Water Using a TiO2 Photocatalyst Supported on Black Sand

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