Enhanced degradation of tetrabromobisphenol A by magnetic Fe3O4@ZIF-67 composites as a heterogeneous Fenton-like catalyst

Chen, Mantang; Wang, Nan; Wang, Xiaobo; Zhou, Yu; Zhu, Lihua

doi:10.1016/j.cej.2020.127539

Cited by 93 publications

(23 citation statements)

References 59 publications

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“…It was found that PMS with its asymmetric structure (HSO 5 – ), being compared with PS (S 2 O 8 2– ), was more readily attacked by metal ions, such as Fe 3+ , Fe 2+ , Mn 2+ , Cu 2+ , and Co 2+ , which break the peroxide O–O bond to produce SO 4 –• . Also, the effect of Co 2+ led to the activation of PMS , because of the formation of Co–OH + to activate PMS and produce SO 4 –• in the Co/PMS system. However, the risk of Co 2+ leaching is inevitable in practical applications .…”

Section: Introductionmentioning

confidence: 99%

Hydroxyapatite Coated with Co-Based Metal Organic Framework Nanoparticles as Heterojunctions for Catalytic Degradation of Organics

Ren

et al. 2021

ACS Appl. Nano Mater.

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Hydroxyapatite (HA), as a kind of biocompatible inorganic material, is rich in hydroxyl groups on the surface and can easily undergo ion exchange reactions with metal ions. In this study, using HA nanowires (HAnW) as eco-friendly carriers and promoters, a HAnW-based heterojunction (HAnW@CoMOF), in which HA was coated by the cobalt-based metal−organic framework (Co-MOF), was synthesized by a simple in situ growth method and ion exchange method. Then, using HAnW@CoMOF to activate peroxymonosulfate, some typical organic pollutants including antibiotics and dyes, such as tetracycline (TC), malachite green, crystal violet, methylene blue, and rhodamine B, were excellently degraded. The removal rate of TC was 86% within 0.5 min and 97% within 15 min. It could also be reused for 10 times with the removal rate of TC being 95%. The catalytic mechanism was investigated with detecting reactive substances, including 1 O 2 ,• O 2 − • OH, and SO 4 −• . We considered the formation of Co−OH + in the heterojunction of HAnW@CoMOF, as there are a lot of −OH in HAnW, which fixed Co 2+ of Co-MOF. In summary, it provided an eco-friendly HA-based catalyst for effective and quick degradation of organic pollutants.

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Section: Introductionmentioning

confidence: 99%

Hydroxyapatite Coated with Co-Based Metal Organic Framework Nanoparticles as Heterojunctions for Catalytic Degradation of Organics

Ren

et al. 2021

ACS Appl. Nano Mater.

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“…After that, the solution was transferred to a 100-ml Teflon-lined autoclave and maintained at 200 • C for 12 h. After cooled to room temperature, the black precipitation was collected with the help of the external magnet. Washed with distilled water and anhydrous ethanol by several times, the hollow Fe 3 O 4 microspheres were dried overnight in a vacuum oven at 45 • C. Hollow structure ZIF-67@Fe 3 O 4 nanospheres were synthesized through a one-pot method [22]. Briefly, 8 mmol of 2-methylimidazole dissolved in 25 ml of MeOH was poured into 25 ml MeOH containing 2 mmol hollow Fe 3 O 4 microspheres at room temperature.…”

Section: Preparation Of Hollow Mmipmentioning

confidence: 99%

Hollow magnetic molecularly imprinted polymer based on metal‐organic framework for capture of ciprofloxacin

Zhou

Zhao

et al. 2022

Separation Science Plus

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The development of a simple and rapid separation and analysis method with high selectivity toward ciprofloxacin is of great importance for environmental protection. Herein, this paper reported a hollow magnetic zeolitic imidazolate framework‐67 based molecularly imprinted polymer for selective adsorption and enrichment of ciprofloxacin. The morphology and structural properties of the hollow magnetic molecularly imprinted polymer were characterized by scanning electron microscopy, transmission electron microscopy, infrared spectroscopy, and thermogravimetry, and the results showed that the material has an obvious hollow structure, good thermal stability, and magnetic properties. The hollow magnetic imprinted polymer has a higher adsorption capacity (75.59 mg/g) and shorter adsorption saturation time (50 min) toward ciprofloxacin. Moreover, the hollow magnetic molecularly imprinted polymer showed excellent adsorption ability, stability, and repeatability. The hollow magnetic imprinted polymer was used to detect trace ciprofloxacin in actual samples (river water, human urine, chicken) successfully with the recoveries of 91.4–100.4%. With the advantages of high recovery (91.4–100.4%), high speed (50 min), and high selectivity (selectivity factor > 2.50), the hollow magnetic molecularly imprinted polymer has broad application prospects in the efficient adsorption of ciprofloxacin.

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“…According to the previous study (Chen, et al, 2019;Chen, et al, 2020), the mechanism of DON degradation in CoFe-LDO/PMS system could be described as follows: In addition, the degradation intermediates of histidine oxidation were identi ed by HPLC-MS. The results were shown in Fig.…”

Section: Degradation Pathwaymentioning

confidence: 99%

CoFe-LDO Nanoparticles as a Novel Catalyst of Permonosulfate (PMS) for Amino Acid Removal

Luo

Liu

Zhao

2021

Preprint

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Dissolved organic nitrogen (DON) has been a subject of studies because of its potential to form nitrogenous disinfection byproducts (N-DBPs) in drinking water treatment. In our study, histidine was effectively degraded in the CoFe-LDO/PMS system. The results investigated that the removal of DON and histidine within 1 h in the CoFe-LDO/PMS system were up to 61% and 72%, respectively. Then the influences of CoFe-LDO dosage, PMS dosage and pH value for DON removal were elucidated. The optimum pH was 8, the optimal dosage of CoFe-LDO and PMS were 0.04 g/L and 0.5 mmol/L. It was found that SO4−• and •OH induced by the transformation of Co2+-Co3+ and Fe2+-Fe3+ on the catalyst surface were responsible for the degradation by ESR detection, in which SO4−• played a more important role. The degradation pathway of histidine indicated that it was partly oxidized to NH4+-N in the 60 min and no evident generation of N2 during the whole process. Furthermore, degradation products of histidine have also been revealed by the analysis of HPLC-MS. In addition, the generation potentials of two typical N-DBPs were also clarified. The formation potential of dichloroacetonitrile (DCAN) decreased, while that of dichloroacetamide (DCAcAm) increased firstly after declining.

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Enhanced degradation of tetrabromobisphenol A by magnetic Fe3O4@ZIF-67 composites as a heterogeneous Fenton-like catalyst

Cited by 93 publications

References 59 publications

Hydroxyapatite Coated with Co-Based Metal Organic Framework Nanoparticles as Heterojunctions for Catalytic Degradation of Organics

Hydroxyapatite Coated with Co-Based Metal Organic Framework Nanoparticles as Heterojunctions for Catalytic Degradation of Organics

Hollow magnetic molecularly imprinted polymer based on metal‐organic framework for capture of ciprofloxacin

CoFe-LDO Nanoparticles as a Novel Catalyst of Permonosulfate (PMS) for Amino Acid Removal

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