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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.


Related in: MedlinePlus

The effect of 0.2 mM of metal ions on the efficiency of photocatalytic degradation of MC-LR. (Experimental conditions: MC-LR concentration of 1 mg L−1, Pt/WO3 concentration of 100 mg L−1, and simulated solar light intensity of 0.4 mW cm−2.)
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fig8: The effect of 0.2 mM of metal ions on the efficiency of photocatalytic degradation of MC-LR. (Experimental conditions: MC-LR concentration of 1 mg L−1, Pt/WO3 concentration of 100 mg L−1, and simulated solar light intensity of 0.4 mW cm−2.)

Mentions: In order to investigate the effects of metal cations on photocatalytic degradation of MC-LR, Cu(NO3)2 and Fe(NO3)3 were introduced into the reaction solutions at a concentration of 0.2 mM. As shown in Figure 8, without metal cations addition, about 87.6% MC-LR was removed after 120 min solar light irradiation. In the presence of 0.2 mM Cu2+ and Fe3+, the percentage removal of MC-LR increased to 100% and 94.7%, respectively. The addition of Cu2+ and Fe3+ obviously enhanced the photocatalytic degradation of MC-LR under solar light irradiation.


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)

The effect of 0.2 mM of metal ions on the efficiency of photocatalytic degradation of MC-LR. (Experimental conditions: MC-LR concentration of 1 mg L−1, Pt/WO3 concentration of 100 mg L−1, and simulated solar light intensity of 0.4 mW cm−2.)
© Copyright Policy - open-access
Related In: Results  -  Collection

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

fig8: The effect of 0.2 mM of metal ions on the efficiency of photocatalytic degradation of MC-LR. (Experimental conditions: MC-LR concentration of 1 mg L−1, Pt/WO3 concentration of 100 mg L−1, and simulated solar light intensity of 0.4 mW cm−2.)
Mentions: In order to investigate the effects of metal cations on photocatalytic degradation of MC-LR, Cu(NO3)2 and Fe(NO3)3 were introduced into the reaction solutions at a concentration of 0.2 mM. As shown in Figure 8, without metal cations addition, about 87.6% MC-LR was removed after 120 min solar light irradiation. In the presence of 0.2 mM Cu2+ and Fe3+, the percentage removal of MC-LR increased to 100% and 94.7%, respectively. The addition of Cu2+ and Fe3+ obviously enhanced the photocatalytic degradation of MC-LR under solar light irradiation.

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.


Related in: MedlinePlus