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Photocatalytic removal of microcystin-LR by advanced WO3-based nanoparticles under simulated solar light.

Zhao C, Li D, Liu Y, Feng C, Zhang Z, Sugiura N, Yang Y - ScientificWorldJournal (2015)

Bottom Line: In the present study, Pt/WO3 exhibited the best performance for the photocatalytic degradation of MC-LR.The presence of metal cations (Cu2+ and Fe3+) improved the photocatalytic degradation of MC-LR.This study suggests that Pt/WO3 photocatalytic oxidation under solar light is a promising option for the purification of water containing MC-LR.

View Article: PubMed Central - PubMed

Affiliation: Graduate School of Life and Environmental Sciences, University of Tsukuba, Tsukuba 305-8572, Japan ; School of Water Resources and Environment, China University of Geosciences, Beijing 100083, China.

ABSTRACT
A series of advanced WO3-based photocatalysts including CuO/WO3, Pd/WO3, and Pt/WO3 were synthesized for the photocatalytic removal of microcystin-LR (MC-LR) under simulated solar light. In the present study, Pt/WO3 exhibited the best performance for the photocatalytic degradation of MC-LR. The MC-LR degradation can be described by pseudo-first-order kinetic model. Chloride ion (Cl-) with proper concentration could enhance the MC-LR degradation. The presence of metal cations (Cu2+ and Fe3+) improved the photocatalytic degradation of MC-LR. This study suggests that Pt/WO3 photocatalytic oxidation under solar light is a promising option for the purification of water containing MC-LR.

No MeSH data available.


XRD patterns of WO3 and modified WO3 samples: (a) Pd/WO3, (b) Pt/WO3, (c) CuO/WO3, and (d) pure WO3.
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fig1: XRD patterns of WO3 and modified WO3 samples: (a) Pd/WO3, (b) Pt/WO3, (c) CuO/WO3, and (d) pure WO3.

Mentions: The crystalline phases of the developed WO3-based photocatalysts were measured by a powder X-ray diffraction (XRD) (Rigaku RINT2200, Japan). Characteristic peaks are observed for all diffraction patterns, which are indexed to the standard card (JCPDS 43-1035). As shown in Figure 1, all samples have monoclinic WO3 structure and the metal doping does not influence the crystal structures of WO3. No extra peaks except for monoclinic WO3 are observed (Figure 1). This phenomenon can be explained by the small amount of CuO, Pd, and Pt species content and high dispersion in the samples.


Photocatalytic removal of microcystin-LR by advanced WO3-based nanoparticles under simulated solar light.

Zhao C, Li D, Liu Y, Feng C, Zhang Z, Sugiura N, Yang Y - ScientificWorldJournal (2015)

XRD patterns of WO3 and modified WO3 samples: (a) Pd/WO3, (b) Pt/WO3, (c) CuO/WO3, and (d) pure WO3.
© Copyright Policy - open-access
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC4390111&req=5

fig1: XRD patterns of WO3 and modified WO3 samples: (a) Pd/WO3, (b) Pt/WO3, (c) CuO/WO3, and (d) pure WO3.
Mentions: The crystalline phases of the developed WO3-based photocatalysts were measured by a powder X-ray diffraction (XRD) (Rigaku RINT2200, Japan). Characteristic peaks are observed for all diffraction patterns, which are indexed to the standard card (JCPDS 43-1035). As shown in Figure 1, all samples have monoclinic WO3 structure and the metal doping does not influence the crystal structures of WO3. No extra peaks except for monoclinic WO3 are observed (Figure 1). This phenomenon can be explained by the small amount of CuO, Pd, and Pt species content and high dispersion in the samples.

Bottom Line: In the present study, Pt/WO3 exhibited the best performance for the photocatalytic degradation of MC-LR.The presence of metal cations (Cu2+ and Fe3+) improved the photocatalytic degradation of MC-LR.This study suggests that Pt/WO3 photocatalytic oxidation under solar light is a promising option for the purification of water containing MC-LR.

View Article: PubMed Central - PubMed

Affiliation: Graduate School of Life and Environmental Sciences, University of Tsukuba, Tsukuba 305-8572, Japan ; School of Water Resources and Environment, China University of Geosciences, Beijing 100083, China.

ABSTRACT
A series of advanced WO3-based photocatalysts including CuO/WO3, Pd/WO3, and Pt/WO3 were synthesized for the photocatalytic removal of microcystin-LR (MC-LR) under simulated solar light. In the present study, Pt/WO3 exhibited the best performance for the photocatalytic degradation of MC-LR. The MC-LR degradation can be described by pseudo-first-order kinetic model. Chloride ion (Cl-) with proper concentration could enhance the MC-LR degradation. The presence of metal cations (Cu2+ and Fe3+) improved the photocatalytic degradation of MC-LR. This study suggests that Pt/WO3 photocatalytic oxidation under solar light is a promising option for the purification of water containing MC-LR.

No MeSH data available.