Iron encapsulated in boron and nitrogen codoped carbon nanotubes as synergistic catalysts for Fenton-like reaction

Yao, Yunjin; Chen, Hao; Qin, Jiacheng; Wu, Guozhong; Lian, Chang; Zhang, Jie; Wang, Shaobin

doi:10.1016/j.watres.2016.05.065

Cited by 293 publications

(42 citation statements)

References 48 publications

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“…5d). Overall, the fact is that all added inorganic anions have a negative impact on the degradation tests following the order of 11,14,56 which is a slight deviation from previous reports. 9,57 It is clear that the degradation curves of MB partially overlap with the control experiment, indicating that the presence of NO 3 À and SO 4 2À show the tiniest inhibitory impacts on catalytic efficiency.…”

Section: Catalytic Activity Evaluationcontrasting

confidence: 81%

Interior engineering of seaweed-derived N-doped versatile carbonaceous beads with Co_xO_y for universal organic pollutant degradation

Zhao

et al. 2019

RSC Adv.

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Section: Catalytic Activity Evaluationcontrasting

confidence: 81%

Interior engineering of seaweed-derived N-doped versatile carbonaceous beads with Co_xO_y for universal organic pollutant degradation

Zhao

et al. 2019

RSC Adv.

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“…However, all of the COD removal efficiency data are higher than 50%, which suggest that the hydrogen peroxide utilization efficiency of these tests were quite high (the apparent utilization efficiency was around 45%), and this Fe@CC catalyst could be a potential product for practical application. The moderate decrease of catalytic activity during the several tests at the beginning was also observed in many literatures [21,35,41]. However, no reasonable explanation for the decrease of catalytic activity was addressed in these reports.…”

Section: Stability Of Catalytic Activitymentioning

confidence: 69%

“…However, no reasonable explanation for the decrease of catalytic activity was addressed in these reports. Since Fe@CC possesses high specific surface area, one hypothesis could be that the initial adsorption capacity of this material enhanced the The moderate decrease of catalytic activity during the several tests at the beginning was also observed in many literatures [21,35,41]. However, no reasonable explanation for the decrease of catalytic activity was addressed in these reports.…”

Section: Stability Of Catalytic Activitymentioning

confidence: 90%

“…Methanol is a commonly used radical scavenger to determine the contribution of the hydroxyl radical during heterogeneous Fenton-like reaction (KHO•=1.2 − 2.8 × 10 9 M −1 •s −1 ) [32,35,36]. As shown in Figure 6A, the addition of 0.1 M and 0.5 M methanol reduced the decolorization rate by 18.2% and 38.7%.…”

Section: Heterogeneous and Homogeneous Fenton Reactionmentioning

confidence: 99%

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Fe Oxides Loaded on Carbon Cloth by Hydrothermal Process as an Effective and Reusable Heterogenous Fenton Catalyst

2018

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Iron based heterogeneous Fenton catalysts are attracting much attention for its economic and environmental friendly characteristics. In this study, iron oxides loaded carbon cloth (assigned as Fe@CC) was prepared using hydrothermal hydrolysis of Fe(NO 3 ) 3 . The specific surface area of Fe@CC determined by N 2 adsorption-desorption Brunauer-Emmett-Teller method was up to 1325.5 m 2 /g, which increased by 81.8% compared with that of native carbon cloth mainly due to the loading of iron oxide. XPS (X-ray photoelectron spectroscopy) spectra confirmed that the iron oxide on the carbon surface included mainly FeOOH. Its heterogeneous Fenton-like activity was determined using Acid Red G as a model substrate for degradation. Fe@CC maintained high and relatively stable activity during 11 tests, and it showed high COD (Chemical Oxygen Demand) removal efficiency and high apparent H 2 O 2 utilization efficiency. The homogeneous Fenton reaction using the amount of leached Fe(III) suggested that the surficial reaction on Fe@CC was dominant. The stability and the mechanism for gradual decrease of activity during the first 4 tests were also discussed.

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“…According to the literature, due to the competitive adsorption of anions and the target organic substance onto the surface of the catalyst, the overall catalytic degradation rate of dye molecules is reduced due to the negative effects of inorganic anions (CO 3 2− , HCOO − , Cl − , H 2 PO 4 − , and SO 4 2− ) on the catalytic process. The negative effect of inorganic anions was found to rank in the following order: CO 3 2− > HCOO − > Cl − > H 2 PO 4 − > SO 4 2− . Therefore, H 2 SO 4 is selected as the acid solution on one hand to mitigate the negative effect and on the other hand to change the valance of Fe 3+ and generate Brønsted acid sites on the surface of HC.…”

Section: Resultsmentioning

confidence: 99%

A low‐cost clay‐based heterogeneous Fenton‐like catalyst: Activation, efficiency enhancement, and mechanism study

Liu

et al. 2017

Asia-Pacific J Chem Eng

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In this work, Hangjin2# clay (HC), a natural iron‐contained clay mineral first discovered in Inner Mongolia of China, is found to be able to catalyze the heterogeneous Fenton reaction efficiently upon rational modification. After activation using dilute sulfuric acid, the HC prohibited a significantly enhanced activity for heterogeneous Fenton reaction. Via acid activation process, Fe2+/Fe3+ redox can be introduced on the surface of sulfuric acid‐activated Hangjin2# clay (SHC), and Brønsted acid sites can be also created on the surface of SHC. Furthermore, Brønsted acid sites could effectively promote the generation of •OH for methyl orange (MO) oxidation and facilitate the Fe3+/Fe2+ redox process. Fenton degradation of MO was used to evaluate the effect of acid activation on the catalytic activities of SHC. Experimental results revealed that the high activity of SHC was mainly attributed to the synergetic effect of the abundant acid sites on catalyst surface and the Fe3+/Fe2+ redox process. In addition, quenching studies confirmed that •OH radicals were principally responsible for the degradation of MO. More importantly, MO degradation for 3 consecutive cycles demonstrated SHC exhibited reusable and stable activity.

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Iron encapsulated in boron and nitrogen codoped carbon nanotubes as synergistic catalysts for Fenton-like reaction

Cited by 293 publications

References 48 publications

Interior engineering of seaweed-derived N-doped versatile carbonaceous beads with Co_xO_y for universal organic pollutant degradation

Interior engineering of seaweed-derived N-doped versatile carbonaceous beads with Co_xO_y for universal organic pollutant degradation

Fe Oxides Loaded on Carbon Cloth by Hydrothermal Process as an Effective and Reusable Heterogenous Fenton Catalyst

A low‐cost clay‐based heterogeneous Fenton‐like catalyst: Activation, efficiency enhancement, and mechanism study

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Iron encapsulated in boron and nitrogen codoped carbon nanotubes as synergistic catalysts for Fenton-like reaction

Cited by 293 publications

References 48 publications

Interior engineering of seaweed-derived N-doped versatile carbonaceous beads with CoxOy for universal organic pollutant degradation

Interior engineering of seaweed-derived N-doped versatile carbonaceous beads with CoxOy for universal organic pollutant degradation

Fe Oxides Loaded on Carbon Cloth by Hydrothermal Process as an Effective and Reusable Heterogenous Fenton Catalyst

A low‐cost clay‐based heterogeneous Fenton‐like catalyst: Activation, efficiency enhancement, and mechanism study

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Interior engineering of seaweed-derived N-doped versatile carbonaceous beads with Co_xO_y for universal organic pollutant degradation

Interior engineering of seaweed-derived N-doped versatile carbonaceous beads with Co_xO_y for universal organic pollutant degradation