Iron-tannic modified cotton derived Fe0/graphitized carbon with enhanced catalytic activity for bisphenol A degradation

Li, Miaoqing; Luo, Rui; Wang, Chaohai; Zhang, Ming; Zhang, Wuxiang; Klu, Prosper Kwame; Yan, Yubo; Qi, Junwen; Sun, Xiuyun; Wang, Lianjun; Li, Jiansheng

doi:10.1016/j.cej.2019.04.187

Cited by 80 publications

(5 citation statements)

References 73 publications

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“…The CoFe@CSC-700 characteristic peaks had the highest intensities, whereas the diffraction peak intensities of CoFe alloys were changed by changing the calcination temperature, suggesting that the degree of crystallinity was affected by the temperature to a certain extent. In addition, an extra characteristic peak can be observed in the XRD pattern of CoFe@CSC-700, which is known from the literature to be a broad peak at 26.3 • attributable to the (002) diffraction plane of graphitized carbon [24,26], which corresponds to the previous TEM results. To explore the degree of graphitization at various calcination temperatures, Raman spectroscopy was conducted.…”

Section: Catalyst Characterizationsupporting

confidence: 77%

“…As shown in Figure 2b, the I D /I G ratio values for CoFe@CSC-600, CoFe@CSC-700, and CoFe@CSC-800 were 1.011, 0.921, and 0.939, respectively. With the increase in calcination temperature, the I D /I G ratio decreased and then increased, and it was lowest at 700 • C, indicating that the degree of graphitization would be damaged if the temperature was too high [26]. This indicated that the Raman experimental results also corresponded to the experimental results of XRD.…”

Section: Catalyst Characterizationmentioning

confidence: 61%

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Preparation of Bimetallic CoFe@CSC-700 Carbonated Microspheres and Activated Peroxymonosulfate for Degradation of Levofloxacin

Hu,

Chen,

Guo

et al. 2024

Water

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The exploration of efficient, low-leaching, and recyclable transition-metal-based catalysts is of great importance for the removal of pollutants from peroxymonosulfate (PMS) in water purification processes. In this study, a bimetallic CoFe@CSC-700 composite was prepared by an alkaline gel pyrolysis reduction method using chitosan as a forming agent and applied to activate PMS to degrade levofloxacin (LEV). The leaching concentration of both cobalt and iron ions in the CoFe@CSC-700 catalyst was reduced by about 8-fold compared to the monometallic composite pellet catalyst. In addition, the removal efficiency of the CoFe@CSC-700 catalyst can still reach 90% after five cycles, showing good recyclability, recoverability and stability. Both free radical pathways (SO4·−, ·OH, and ·O2−) and non-free radical pathways (1O2) were detected in the oxidation reaction, with free radical pathways as the main contributor. The possible degradation pathways of LEV were proposed by LC-MS tests. Overall, this study provides new insights into the construction of efficient and stable PMS catalysts for wastewater treatment.

show abstract

Section: Catalyst Characterizationsupporting

confidence: 77%

Section: Catalyst Characterizationmentioning

confidence: 61%

Preparation of Bimetallic CoFe@CSC-700 Carbonated Microspheres and Activated Peroxymonosulfate for Degradation of Levofloxacin

Hu,

Chen,

Guo

et al. 2024

Water

View full text Add to dashboard Cite

show abstract

“…The I D / I G value is 1.02, this means high graphitization degree [54] . This is further confirmed by the third peak at 2844 cm −1 , which is considered as another character for carbon in graphite state [55] . By and large, the calcination of coordination polymer built by nitrogen heterocycle ligand often generates metal oxide with oxygen vacancy, whose existence can be proved by electron paramagnetic resonance spectrum (EPR) [56] .…”

Section: Structure and Morphology Of O-co 3 O 4 @Mcnsupporting

confidence: 52%

Hybrid battery integrated by Zn-air and Zn-Co3O4 batteries at cell level

Liu

et al. 2020

Journal of Energy Chemistry

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“…The intensity ratio ( I D / I G ) of the D and G bonds serves as a crucial indicator for assessing the level of graphitization. The presence of a graphite structure facilitates charge transfer, thereby promoting efficient electron transfer between the PMS and catalyst, ultimately expediting catalytic reaction rates. , Moreover, a weak and broad second-order band located at ≈2700 cm –1 implies a relatively high degree of graphitization and the presence of graphene-like structures, as observed in the HRTEM images . The incorporation of Mt as a dispersant during CMNC synthesis significantly enhanced the degree of catalyst graphitization with a reduction in the I D / I G value from 1.21 for CMNC to 0.90 for Mt/CMNC-35.…”

Section: Resultsmentioning

confidence: 92%

N-doped Carbon-Encapsulated CoMn Bimetallic Nanocages Anchored on Montmorillonite as Efficient Activators of Peroxymonosulfate for Pollutant Control

Liu,

Li,

Zhao

et al. 2024

ACS EST Water

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The development of catalysts with high activity and both economic and environmental benefits is critical and challenging for scaling-up pollutant treatment. Herein, using Prussian blue analogues as precursors, nitrogen-doped carbon-encapsulated CoMn bimetallic nanocages (CMNC) were successfully anchored onto montmorillonite (Mt) to form Mt/CMNC-35 nanocomposites. BPA degradation experiments demonstrated a degradation efficiency of 96.7%, a total organic carbon removal rate of 81.3%, and a chemical oxygen demand removal rate of 92.3% within 20 min in the presence of peroxymonosulfate (PMS). The excellent performance can be attributed to the layered structure and abundant hydroxyl groups of Mt, which not only facilitate the dispersion and immobilization of CMNC but also enhance the mass transfer rate. Mechanism investigation uncovered that the generation of •OH, SO 4•− , 1 O 2 , and O 2 •− was dominated by CMNC, whereas the direct electron transfer process was dominated by the highly graphitized nitrogen-doped carbon layer. Continuous degradation experiments revealed the potential of Mt/CMNC-35 for industrial applications, with degradation efficiencies of 100% and >72.0% for 50 mg/L RhB over 10 days and 50 mg/L BPA over 15 days, respectively. Toxicity analyses of BPA and degradation intermediates demonstrated that the Mt/CMNC-35/PMS system exhibited enhanced detoxification. The present study provides valuable insights into the montmorillonite-based catalysts for sustainable wastewater remediation.

show abstract

Iron-tannic modified cotton derived Fe0/graphitized carbon with enhanced catalytic activity for bisphenol A degradation

Cited by 80 publications

References 73 publications

Preparation of Bimetallic CoFe@CSC-700 Carbonated Microspheres and Activated Peroxymonosulfate for Degradation of Levofloxacin

Preparation of Bimetallic CoFe@CSC-700 Carbonated Microspheres and Activated Peroxymonosulfate for Degradation of Levofloxacin

Hybrid battery integrated by Zn-air and Zn-Co3O4 batteries at cell level

N-doped Carbon-Encapsulated CoMn Bimetallic Nanocages Anchored on Montmorillonite as Efficient Activators of Peroxymonosulfate for Pollutant Control

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