Photodegradation of methyl orange aqueous on MnWO4 powder under different light resources and initial pH

He, H.-Y.; Huang, Jun; Cao, Li Yun; Wu, Juan

doi:10.1016/j.desal.2009.10.024

Cited by 85 publications

(27 citation statements)

References 20 publications

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“…As a consequence, the simultaneous utilization of MnO 2 and H 2 O 2 has been considered as Fenton-like process reagent to oxidize the low-biodegradable organism. For instance, methylene blue [27], methyl orange [28], and azo dyes [29] have been removed using MnO 2 -involved hybrid composite as a catalyst in heterogeneous MnO 2 /H 2 O 2 Fenton-like system. Thus, in this work, novel absorbents MnO 2 @alginate/Mn (MnO 2 @SA/Mn) beads were first fabricated.…”

Section: Introductionmentioning

confidence: 99%

Efficient Absorption of Antibiotic from Aqueous Solutions over MnO₂@SA/Mn Beads and Their In Situ Regeneration by Heterogeneous Fenton-Like Reaction

Luo

Bai

Wang

et al. 2017

Journal of Nanomaterials

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Alginate has been extensively used as absorbents due to its excellent properties. However, the practical application of pure alginate has been restricted since the saturated adsorbent has weak physical structure and could not be regenerated easily. In this study, a lowcost and renewable composite MnO 2 @alginate/Mn adsorbent has been prepared facilely for the absorptive removal of antibiotic wastewater. FE-SEM, FTIR, and XRD analyses were used to characterize the samples. The norfloxacin (NOR) was used as an index of antibiotics. More specifically, the batch absorption efficiency of the adsorbents was evaluated by pH, contact time with different NOR concentration, and the temperature. Thus, the performance of absorption kinetic dynamics and isotherm equations were estimated for the adsorptive removal process. Parameters including Δ 0 , Δ 0 , and Δ 0 were utilized to describe the feasible adsorption process. To regenerate the saturated absorptive sites of the adsorbent, the heterogeneous Fenton-like reactions were trigged by introduction of H 2 O 2 . The results showed that the in situ regenerating has exhibited an excellent recycling stability. The high activity and the simple fabrication of the adsorbents make them attractive for the treatment of wastewater containing refractory organic compound and also provide fundamental basis and technology for further practical application.

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Section: Introductionmentioning

confidence: 99%

Efficient Absorption of Antibiotic from Aqueous Solutions over MnO₂@SA/Mn Beads and Their In Situ Regeneration by Heterogeneous Fenton-Like Reaction

Luo

Bai

Wang

et al. 2017

Journal of Nanomaterials

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“…MnWO 4 is a narrow band gap semiconductor, which possess electronic and magnetic properties. Moreover, MnWO 4 has been reported as an active photocatalyst under visible light [4,5] [13]. Theoretically, the photocatalytic reaction is considered to occur on the surface of photocatalysts [14], therefore the morphology and surface properties of the photocatalyst greatly influence the photocatalytic activity.…”

Section: Introductionmentioning

confidence: 99%

Monodispersed 3D MnWO4–TiO2 composite nanoflowers photocatalysts for environmental remediation

Hassan

Amna

Al‐Deyab

et al. 2015

Current Applied Physics

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“…The introduction of new photocatalytic materials should be feasible approach for improving the photocatalytic activity. Recently, metal tungstates have attracted much attention as photocatalyst [6,7] due to narrow band gap. But reported metal tungstates exhibited very poor photocatalytic efficiency in removing organic pollutants from air and water under visible light irradiation may be due to wasteful recombination of photoexcited charge carrier.…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic Degradation of 2-Propanol and Phenol Using Au Loaded MnWO4 Nanorod Under Visible Light Irradiation

2012

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Single crystalline MnWO 4 nanorod has been prepared by low temperature hydrothermal reaction at 180°C. The prepared MnWO 4 possesses band gap of 2.63 eV. Photochemical decomposition method has been followed to disperse Au nanoparticles onto MnWO 4 nanorod. The prepared Au loaded MnWO 4 nanorod demonstrated greatly enhanced photocatalytic activity in decomposing 2-propanol and evolving CO 2 in gas phase and phenol in aqueous phase compared to bare MnWO 4 and commercial TiO 2 nanoparticles (Degussa P25) under visible light (k C 420 nm) irradiation. The Au loading was optimized to 3.79 wt% for the highest efficiency. The enhanced photocatalytic activity originates from the absorption of visible light by MnWO 4 as well as the introduction of nanoparticulate Au on the surface of MnWO 4 as cocatalyst to impede the recombination of photogenerated charge-carriers.

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Photodegradation of methyl orange aqueous on MnWO4 powder under different light resources and initial pH

Cited by 85 publications

References 20 publications

Efficient Absorption of Antibiotic from Aqueous Solutions over MnO₂@SA/Mn Beads and Their In Situ Regeneration by Heterogeneous Fenton-Like Reaction

Efficient Absorption of Antibiotic from Aqueous Solutions over MnO₂@SA/Mn Beads and Their In Situ Regeneration by Heterogeneous Fenton-Like Reaction

Monodispersed 3D MnWO4–TiO2 composite nanoflowers photocatalysts for environmental remediation

Photocatalytic Degradation of 2-Propanol and Phenol Using Au Loaded MnWO4 Nanorod Under Visible Light Irradiation

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Photodegradation of methyl orange aqueous on MnWO4 powder under different light resources and initial pH

Cited by 85 publications

References 20 publications

Efficient Absorption of Antibiotic from Aqueous Solutions over MnO2@SA/Mn Beads and Their In Situ Regeneration by Heterogeneous Fenton-Like Reaction

Efficient Absorption of Antibiotic from Aqueous Solutions over MnO2@SA/Mn Beads and Their In Situ Regeneration by Heterogeneous Fenton-Like Reaction

Monodispersed 3D MnWO4–TiO2 composite nanoflowers photocatalysts for environmental remediation

Photocatalytic Degradation of 2-Propanol and Phenol Using Au Loaded MnWO4 Nanorod Under Visible Light Irradiation

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Product

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Efficient Absorption of Antibiotic from Aqueous Solutions over MnO₂@SA/Mn Beads and Their In Situ Regeneration by Heterogeneous Fenton-Like Reaction

Efficient Absorption of Antibiotic from Aqueous Solutions over MnO₂@SA/Mn Beads and Their In Situ Regeneration by Heterogeneous Fenton-Like Reaction