A novel magnetic recyclable photocatalyst based on a core–shell metal–organic framework Fe3O4@MIL-100(Fe) for the decolorization of methylene blue dye

Zhang, Chao-Feng; Qiu, Ling-Guang; Ke, Fei; Zhu, Yujun; Yuan, Yupeng; Xu, Gengsheng; Xia, Junqiang

doi:10.1039/c3ta13030d

Cited by 392 publications

(141 citation statements)

References 36 publications

(52 reference statements)

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“…Moreover, we also measured the chemical oxygen demand (COD) to verify the complete oxidation of MB (Figure 4c). The trends of the optical density and COD decreases were nearly identical, which suggested that the decoloration of MB was mainly due to the complete oxidation of MB into CO2 [20][21][22][23][24][25]. Generally, many Fenton systems generate oxidative radicals and other non-radical species [26].…”

Section: Decoloration Of Mb In the Ftcnc-h 2 O 2 Fenton-like Systemmentioning

confidence: 69%

Preparation of Fe3O4/TiO2/C Nanocomposites and Their Application in Fenton-Like Catalysis for Dye Decoloration

Liu

Zhang

et al. 2016

Catalysts

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Abstract:Fe 2+ -H 2 O 2 Fenton system is widely applied in water treatment nowadays, but the acidification and sludge generation are crucial problems to be solved. Herein, we report that Fe 3 O 4 /TiO 2 /C nanocomposites (FTCNCs) were able to catalyze the decomposition of H 2 O 2 at neutral pH and can be applied in dye decoloration. FTCNCs were prepared by precipitating TiO 2 on Fe 3 O 4 cores via the hydrolysis of tetrabutyl titanate followed by the hydrothermal dehydrogenization of glucose to deposit carbon on Fe 3 O 4 /TiO 2 . The decoloration of methylene blue (MB) in the FTCNC-H 2 O 2 Fenton-like system was monitored to reflect the catalytic activity of FTCNC. The radical generation capability was analyzed by electron spin resonance. Our results indicated that FTCNC-H 2 O 2 Fenton-like system was efficient in decolorizing MB, and the radicals led to the near complete oxidation of MB. The FTCNC-H 2 O 2 Fenton-like system could be used in a wide pH range of 4-9. A greater catalyst amount, a higher H 2 O 2 concentration, and a higher temperature accelerated the decoloration kinetics. FTCNCs showed good activity after the regeneration of 8 cycles. The implication to the practical applications of FTCNCs in water treatment is discussed.

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Section: Decoloration Of Mb In the Ftcnc-h 2 O 2 Fenton-like Systemmentioning

confidence: 69%

Preparation of Fe3O4/TiO2/C Nanocomposites and Their Application in Fenton-Like Catalysis for Dye Decoloration

Liu

Zhang

et al. 2016

Catalysts

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“…Since the first report of photocatalytic activity in MOF-5, MOFs have been increasingly used as novel photocatalysts Nano Res. [13,14]. However, they still suffer from some drawbacks, such as a high recombination probability of photoexcited charge carriers.…”

Section: Introductionmentioning

confidence: 98%

“…In addition, considering its photoactive property, MIL-100(Fe) is a promising candidate for the development of efficient photocatalysts [14,27]. Toward this end, we report on a set of noblemetal@MIL-100(Fe) (M = Au, Pd, Pt) nanocomposites (denoted M@MIL-100(Fe)) fabricated using a facile room-temperature photodeposition technique without the use of any chemical reducing agents or organic stabilizers.…”

Section: Introductionmentioning

confidence: 99%

M@MIL-100(Fe) (M = Au, Pd, Pt) nanocomposites fabricated by a facile photodeposition process: Efficient visible-light photocatalysts for redox reactions in water

et al. 2015

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Proper design and preparation of high-performance and stable dual functional photocatalytic materials remains a significant objective of research. In this work, highly dispersed noble-metal nanoparticles (Au, Pd, Pt) were immobilized on MIL-100(Fe) (denoted M@MIL-100(Fe)) using a facile room-temperature photodeposition technique. The resulting M@MIL-100(Fe) (M = Au, Pd, and Pt) nanocomposites exhibited enhanced photoactivities toward photocatalytic degradation of methyl orange (MO) and reduction of heavy-metal Cr(VI) ions under visible-light irradiation (λ ≥ 420 nm) compared with blank-MIL-100(Fe). Combining these results with photoelectrochemical analyses revealed that noble-metal deposition can effectively improve the charge-separation efficiency of MIL-100(Fe) under visible-light irradiation. This phenomenon in turn leads to the enhancement of visible-light-driven photoactivity of M@MIL-100(Fe) toward photocatalytic redox reactions. In particular, the Pt@MIL-100(Fe) with an average Pt particle size of 2 nm exhibited remarkably enhanced photoactivities compared with those of M@MIL-100(Fe) (M = Au and Pd), which can be attributed to the integrative effect of the enhanced light absorption intensity and more efficient separation of the photogenerated charge carrier. In addition, possible photocatalytic reaction mechanisms are also proposed.

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“…Using semiconductor QDs and MOFs as photo-catalysts have their own advantages and disadvantages [29]. By integrating such semiconductor QDs-MOF hybrid materials, they are expected to possess advanced properties originating from the two different components and also overcome their individual shortages [30][31][32]. To date, there has been progress on the studies of semiconductor-MOF heterostructures for photo-catalytic activity.…”

Section: Issn: 2320-5407mentioning

confidence: 99%

Photo-Catalytic Behavior of Cdse QDS Sensitized Zr-(1,3,5-Benzene Tricarboxylic Acid) Metal-Organic Frameworks.

Gonthina¹,

Sreedhar²,

Rao³

2017

IJAR

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A novel magnetic recyclable photocatalyst based on a core–shell metal–organic framework Fe3O4@MIL-100(Fe) for the decolorization of methylene blue dye

Cited by 392 publications

References 36 publications

Preparation of Fe3O4/TiO2/C Nanocomposites and Their Application in Fenton-Like Catalysis for Dye Decoloration

Preparation of Fe3O4/TiO2/C Nanocomposites and Their Application in Fenton-Like Catalysis for Dye Decoloration

M@MIL-100(Fe) (M = Au, Pd, Pt) nanocomposites fabricated by a facile photodeposition process: Efficient visible-light photocatalysts for redox reactions in water

Photo-Catalytic Behavior of Cdse QDS Sensitized Zr-(1,3,5-Benzene Tricarboxylic Acid) Metal-Organic Frameworks.

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