High efficiency heterogeneous Fenton-like catalyst biochar modified CuFeO2 for the degradation of tetracycline: Economical synthesis, catalytic performance and mechanism

Xin, Shuaishuai; Liu, Guocheng; Ma, Xiaohan; Gong, Jiaxin; Ma, Bingrui; Yan, Qinghua; Chen, Qinghua; Ma, Dong; Zhang, Guangshan; Gao, Mengchun

doi:10.1016/j.apcatb.2020.119386

Cited by 345 publications

(66 citation statements)

References 59 publications

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“…It reflects that the nZVI/SEP + H 2 O 2 system is highly effective for TC-HCl degradation. And the reaction rate constant of TC-HCl degradation process is consistent with the previous reports ( Zhang et al, 2018 ; Khodadadi et al, 2019 ; Xin et al, 2021 ). The 0.5nZVI/SEP composite exhibits highest catalytic efficiency, which indicates that the loading amount of nZVI is closely related to the catalytic performance of TC-HCl.…”

Section: Resultssupporting

confidence: 92%

Preparation of Sepiolite Nanofibers Supported Zero Valent Iron Composite Material for Catalytic Removal of Tetracycline in Aqueous Solution

Han

Zhang

et al. 2021

Front. Chem.

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The heavy use of antibiotics in medicine, stock farming and agriculture production has led to their gradual accumulation in environmental media, which poses a serious threat to ecological environment and human safety. As an efficient and promising catalyst for the degradation of antibiotics, nanoscale zero valent iron (nZVI) has attracted increasing attention in recent years. In this study, sepiolite nanofiber supported zero valent iron (nZVI/SEP) composite was prepared via a facile and environmentally friendly method. The nZVI particles (with size of 20–60 nm) were dispersed evenly on the surface of sepiolite nanofibers, and the catalytic performance for the removal of tetracycline hydrochloride (TC-HCl) in aqueous system was investigated. The effect of nZVI loading amount, catalyst dosage, H2O2 concentration and pH on the removal efficiency of TC-HCl were studied. It was revealed that the sepiolite supporter effectively inhibited the agglomeration of nZVI particles and increased the contact area between contaminant and the active sites, resulting in the higher catalytic performance than pure nZVI material. The TC-HCl removal efficiency of nZVI/SEP composite was up to 92.67% when TC-HCl concentration of 20 mg/L, catalyst dosage of 1.0 g/L, H2O2 concentration of 1.0 mM, pH value of 7. Therefore, the nZVI/SEP composites possess high catalytic activity for TC-HCl removal and have great application prospects in antibiotic wastewater treatment.

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Section: Resultssupporting

confidence: 92%

Preparation of Sepiolite Nanofibers Supported Zero Valent Iron Composite Material for Catalytic Removal of Tetracycline in Aqueous Solution

Han

Zhang

et al. 2021

Front. Chem.

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“…The effect of H 2 O 2 concentration can be verified by the apparent rate constant (Figure 4(b)). Similar results have been reported by Chen et al (2020b) and Xin et al (2021). The positive effect of H 2 O 2 is related to the accelerated generation of reactive radicals that are responsible for MB degradation.…”

Section: Effect Of H 2 O 2 Concentrationsupporting

confidence: 88%

“…The radicals are responsible to MB degradation. As reported by previous studies, •OH is the dominant oxidant in Fentonlike processes (Wang et al 2019a;Xin et al 2021). To verify the role of •OH in Cu-C 3 N 4 /H 2 O 2 /ultrasound system, IPA is used as radical scavenger.…”

Section: Mechanism Of Catalytic Reactionsmentioning

confidence: 86%

“…The existence of •OH is further confirmed by ESR spectrum using DMPO as probe. A strong 4-fold characteristic peaks of typical DMPO-trapped •OH adduct with an intensity ratio of 1:2:2:1 is observed in Figure 8(b) (Xin et al 2021). It should be noted that besides •OH, other radicals can not be ruled out for MB degradation.…”

Section: Mechanism Of Catalytic Reactionsmentioning

confidence: 97%

“…Iron-based Fenton catalysts confront the problem of narrow operation pH (Wang et al 2021a). In this regard, extensive efforts have been conducted to develop effective Fenton-like catalysts operated over a wide pH range (Xin et al 2021). Because of high abundance, low cost, and the striking reactivity towards hydrogen peroxide (H 2 O 2 ), copper-based catalysts receive increasing global attention (Gawande et al 2016).…”

Section: Graphical Abstract Introductionmentioning

confidence: 99%

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Ultrasound assisted Fenton-like degradation of dyes using copper doped graphitic carbon nitride

Wang

Huang

Sun

et al. 2021

Water Science and Technology

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A novel copper doped graphitic carbon nitride (Cu-C3N4) was successfully synthesized and used as an effective Fenton-like catalyst. Cu-C3N4 was characterized by scanning electron microscopy, surface area analyzer, Fourier transform infrared spectroscopy, X-ray diffractometer, and X-ray photoelectron spectroscopy. Effect of process parameters including catalyst dosage, hydrogen peroxide (H2O2) concentration, solution pH, and initial methylene blue (MB) concentration was investigated to evaluate catalytic performance. The pseudo first-order kinetic model was used to describe the catalytic process. The enhancement of MB degradation is observed assisted by ultrasound. MB degradation of 96% is obtained within 30 min in Cu-C3N4/H2O2/ultrasound system, and the corresponding rate constant is 0.099 min−1. Effective MB degradation is obtained over a broad pH range (3.3–9.9). The catalytic mechanism is examined by ultraviolet-visible spectra, quenching test, and electron spin resonance determination. The dominant mechanism of MB degradation is ascribed to the ultrasonic H2O2 activation by Cu-C3N4 for hydroxyl radical generation. Cu-C3N4 has good reusability and is effective to degrade rhodamine B and acid orange 7. This work not only contributes to the field of wastewater treatment, but also provides insights into the synthesis of Fenton-like catalysts. The results manifest that Cu-C3N4 is a promising Fenton-like catalyst for dye degradation in the field of environmental pollution remediation.

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Peroxide‐Based Biochar‐Assisted Advanced Oxidation

Cao,

Zhang,

Sun

et al. 2023

Biochar Applications for Wastewater Treatment

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High efficiency heterogeneous Fenton-like catalyst biochar modified CuFeO2 for the degradation of tetracycline: Economical synthesis, catalytic performance and mechanism

Cited by 345 publications

References 59 publications

Preparation of Sepiolite Nanofibers Supported Zero Valent Iron Composite Material for Catalytic Removal of Tetracycline in Aqueous Solution

Preparation of Sepiolite Nanofibers Supported Zero Valent Iron Composite Material for Catalytic Removal of Tetracycline in Aqueous Solution

Ultrasound assisted Fenton-like degradation of dyes using copper doped graphitic carbon nitride

Peroxide‐Based Biochar‐Assisted Advanced Oxidation

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