High-loaded single Cu atoms decorated on N-doped graphene for boosting Fenton-like catalysis under neutral pH

Wu, Qian-Yuan; Wang, Jin; Wang, Zhiwei; Xu, Yalan; Xing, Zhihui; Zhang, Xinyang; Guan, Yuntao; Liao, Guangfu; Li, Xinzheng

doi:10.1039/d0ta04943c

Cited by 106 publications

(49 citation statements)

References 54 publications

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“…In the doping of carbon-based materials, there are few reports on the codoping by both a metal atom and a non-metal atom. We investigated well the N-doped graphene as a Fenton-like catalyst [23], and observed the strong effect of Cu species on the catalytic performances of carbonand non-carbon-based substrates [28][29][30][31]. Furthermore, previous reports suggested that some M−N/C catalysts showed better catalytic activity and stability than those containing only a single metal [5,[31][32][33].…”

Section: Introductionmentioning

confidence: 91%

“…We investigated well the N-doped graphene as a Fenton-like catalyst [23], and observed the strong effect of Cu species on the catalytic performances of carbonand non-carbon-based substrates [28][29][30][31]. Furthermore, previous reports suggested that some M−N/C catalysts showed better catalytic activity and stability than those containing only a single metal [5,[31][32][33]. As an extension of our previous investigations, we aimed to develop a Cu-containing nitrogen-doped carbon composite as a versatile catalyst.…”

Section: Introductionmentioning

confidence: 99%

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Copper- and Nitrogen-Codoped Graphene with Versatile Catalytic Performances for Fenton-Like Reactions and Oxygen Reduction Reaction

et al. 2020

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Copper- and nitrogen-codoped reduced graphene oxide material (Cu/N-rGO) was prepared with a hydrothermal method. Its versatile catalytic performances were demonstrated toward the oxidative degradation of rhodamine B (RhB) and oxygen reduction reaction (ORR). The Cu and N codoping of graphene enhanced not only its activation ability toward H2O2, but also its electrocatalytic ability for ORR. It was observed that the use of 3%Cu/N-rGO together with 40 mmol·L−1 H2O2 and 4 mmol·L−1 Na2CO3 could remove more than 94% of the added RhB (30 mg·L−1) in 20 min through a catalytic Fenton-like degradation. Quenching experiments and electron paramagnetic resonance (EPR) measurements indicated that the main reactive species generated in the catalytic oxidation process were surface-bound •OH. The modified graphene also showed good electrocatalytic activity for ORR reaction in alkaline media through a four-electron mechanism. On the electrode of Cu/N-rGO, the ORR reaction exhibited an onset potential of −0.1 V and a half-wave potential of −0.248 V, which were correspondingly close to those on a Pt/C electrode. In comparison with a Pt/C electrode, the 3%Cu/N-rGO electrode showed much greater tolerance to methanol. Such outstanding catalytic properties are attributed to the abundant active sites and the synergism between Cu and N in Cu/N-rGO.

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Section: Introductionmentioning

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Copper- and Nitrogen-Codoped Graphene with Versatile Catalytic Performances for Fenton-Like Reactions and Oxygen Reduction Reaction

et al. 2020

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“…The superior activity of SACs also was observed in N-doped graphene oxide (NGO) supported single atom Cu catalyst for paracetamol degradation. [197] DFT calculations demonstrated that an easier activation of H 2 O 2 to produce •OH could be achieved over Cu 1 / NGO with an ultralow energy barrier of 1.45 eV, thus significantly promoting the degradation performance. Notably, SACs were also reported to exhibit superior catalytic performance in peroxone reaction for pollutants oxidation.…”

Section: Water Pollutant Oxidationmentioning

confidence: 99%

Heterogeneous Single Atom Environmental Catalysis: Fundamentals, Applications, and Opportunities

Cui

et al. 2021

Adv Funct Materials

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The development of efficient catalysts is pivotal for pollution abatement to guarantee a sustainable and green industrial production. Supported single atom catalysts (SACs) with the advantages of maximum atom utilization, unique electronic structure, and distinguished metal support interaction have recently become a hotspot in the catalysis community, and bring new opportunities for environmental catalysis. This review aims to provide a comprehensive overview of the latest progress on the environmental SACs from both the fundamental and practical points of view. It starts with highlighting the state‐of‐the‐art synthesis strategies of great values for the practical use to construct challenging SACs. The applications of SACs in the environmental remediation processes are critically summarized, including CO oxidation, NOx decomposition, volatile organic compounds incineration, CO2 conversion, and water purification. Meanwhile, the topic also sketches out the recent progress for the non‐mercury catalyzed acetylene hydrochlorination reaction to address the environmental‐benign synthesis. Emphasis is placed on the elucidation of the structure–activity relationships and the underlying catalytic mechanisms to shed light on the guidelines for catalyst optimization and upgradation. Finally, the remaining challenges and perspectives for this flourishing field are also discussed.

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“…Wang et al found that the catalytic performance of CeO 2 could be enhanced through sulfation pretreatment under wild acid condition (Wang et al 2014). However, how to improve its oxidative efficiency under neutral pH and how to recover CeO 2 are still two concerns for practical applications (Wu et al 2020).…”

Section: Introductionmentioning

confidence: 99%

Activation of hydrogen peroxide by graphite supported H2SO4-CeO2 for isoniazid degradation under neutral pH

Jiang

Qian

Shen

et al. 2022

Water Science and Technology

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Graphite felt (GF) supported cerium oxide (CeO2) composite with sulfation pretreatment (H2SO4-CeO2/GF) was prepared by the impregnation method and employed as the catalyst to activate H2O2 for degradation of isoniazid (INH). The obtained samples were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscope (SEM) and X-ray photoelectron spectrum (XPS). The results showed that H2SO4-CeO2/GF had good properties in activating H2O2 for the degradation of INH. The INH removal was about 89.4% in 120 min under the following conditions: H2O2 2.94 mM, H2SO4-CeO2/GF 2.6 g/L, INH 10 mg/L, initial pH at 6.8 and temperature at 25 °C. The effects of some reaction parameters including initial H2O2 concentration, initial INH concentration, initial pH value, the catalyst dosage and reaction temperature on INH degradation were investigated. On the basis of mechanism study and intermediate analysis, the possible degradation pathway of INH was proposed. Besides, effective degradation of methyl orange (MO) and norfloxacin (NOF) also confirmed the high activity of H2SO4-CeO2/GF in activation of H2O2. The H2SO4-CeO2/GF was relatively stable, showing good application prospect.

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High-loaded single Cu atoms decorated on N-doped graphene for boosting Fenton-like catalysis under neutral pH

Abstract:
A single-atom Cu dispersed on N-doped graphene with ultrahigh Cu loading of 5.8 wt% was prepared for boosting the degradation of contaminants.

Cited by 106 publications

References 54 publications

Copper- and Nitrogen-Codoped Graphene with Versatile Catalytic Performances for Fenton-Like Reactions and Oxygen Reduction Reaction

Copper- and Nitrogen-Codoped Graphene with Versatile Catalytic Performances for Fenton-Like Reactions and Oxygen Reduction Reaction

Heterogeneous Single Atom Environmental Catalysis: Fundamentals, Applications, and Opportunities

Activation of hydrogen peroxide by graphite supported H2SO4-CeO2 for isoniazid degradation under neutral pH

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High-loaded single Cu atoms decorated on N-doped graphene for boosting Fenton-like catalysis under neutral pH

Abstract: A single-atom Cu dispersed on N-doped graphene with ultrahigh Cu loading of 5.8 wt% was prepared for boosting the degradation of contaminants.

Cited by 106 publications

References 54 publications

Copper- and Nitrogen-Codoped Graphene with Versatile Catalytic Performances for Fenton-Like Reactions and Oxygen Reduction Reaction

Copper- and Nitrogen-Codoped Graphene with Versatile Catalytic Performances for Fenton-Like Reactions and Oxygen Reduction Reaction

Heterogeneous Single Atom Environmental Catalysis: Fundamentals, Applications, and Opportunities

Activation of hydrogen peroxide by graphite supported H2SO4-CeO2 for isoniazid degradation under neutral pH

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Abstract:
A single-atom Cu dispersed on N-doped graphene with ultrahigh Cu loading of 5.8 wt% was prepared for boosting the degradation of contaminants.