Evaluation of three dimensional high nitrogen doped graphene as an efficient sorbent for the preconcentration of BTEX compounds in environmental samples

Tabani, Hadi; Khodaei, Kamal; Movahed, Siyavash Kazemi; Moghaddam, Ali Zeraatkar; Zare, Farzaneh Dorabadi; Mirzaei, Siroos

doi:10.1039/c5ra21397e

Cited by 14 publications

(3 citation statements)

References 50 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The abundant N-doped functional groups can effectively induce the nucleation of Zn-ions. 36,40 Meanwhile, based on the analysis of the O 1s spectrum (Figure 1g), the oxygen functional groups include CO at around 530.9 eV and C−OH at around 532.3 eV, which is consistent with previous reported results. 41 The doping of these heteroatoms ensures excellent adhesion of the NGO coating to the Zn foil, which facilitates the long-cycle stability of the aqueous batteries.…”

Section: Resultssupporting

confidence: 91%

“…To identify the composition of the prepared electrode, XRD and FT-IR measurements were performed. As illustrated in Figure 1d, the broad diffraction features of the NGO power around 26°could be assigned to the (002) peak of graphite, 35,36 corresponding to the peak of RGO (Figure S2), 29 which reveals the amorphous nature of the NGO power. The NGO@Zn sample exhibits similar shape characterization peaks and a broad diffraction peak with bare Zn and NGO power, respectively.…”

Section: Resultsmentioning

confidence: 97%

See 1 more Smart Citation

Artificial N-doped Graphene Protective Layer Enables Stable Zn Anode for Aqueous Zn-ion Batteries

Hao

Zhou

Wei

et al. 2021

ACS Appl. Energy Mater.

View full text Add to dashboard Cite

Zinc (Zn) metal anode is one of the promising aqueous anodes due to its lower reduction potential and high capacity; however, the unstable interface during cycling severely inhibits the development of aqueous Zn-ion batteries (ZIBs). Here, we constructed a protective layer of nitrogen (N)-doped graphene (NGO) on Zn foil using a simple squeegee coating process. In situ optical microscopy and mass spectrometry analyses further demonstrated that this graphene protective layer alleviates the release of hydrogen as well as the hydrolysis of Zn. Meanwhile, the abundant N-doped functional groups modulate the deposition morphology of the Zn metal and inhibit the growth of porous dendrites. Based on this, the NGO@Zn||NGO@Zn symmetric cell presents a stable cycling performance over 500 h with a low overpotential (19 mV). Meanwhile, the full cell of the LiMn2O4 (LMO)||NGO@Zn battery delivers a capacity of 89.1 mAh g–1 after 600 cycles at the rate of 1C and a high specific capacity at the rate of 5C. Moreover, the LMO||NGO@Zn pouch cell (1.32 mAh cm–2) exhibits a capacity of up to 124.7 mAh g–1 at 0.5C and retains a capacity of 72.9 mAh g–1 after 90 cycles under no stress test conditions. This work offers a feasible synthesis approach and promising performance to accelerate the industrial application of aqueous ZIBs.

show abstract

Section: Resultssupporting

confidence: 91%

Section: Resultsmentioning

confidence: 97%

Artificial N-doped Graphene Protective Layer Enables Stable Zn Anode for Aqueous Zn-ion Batteries

Hao

Zhou

Wei

et al. 2021

ACS Appl. Energy Mater.

View full text Add to dashboard Cite

show abstract

“…The accidental leakages of diesel fuel and gasoline from underground storage tanks are the main reasons for aromatic hydrocarbons pollution in the soil and groundwater (Tabani et al, 2016; Usman et al, 2020). Benzene, toluene, ethylbenzene, and xylenes (BTEX), four typical aromatic compounds, are listed as the priority pollutants by the United States Environmental Protection Agency (US‐EPA) because of their high carcinogenicity and toxicity (Akmirza et al, 2017; Dong et al, 2017; Sun et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

l‐cysteine‐modified Fe₃O₄ nanoparticles as a novel heterogeneous catalyst for persulfate activation on BTEX removal

Sun

Lyu

2021

Water Environment Research

View full text Add to dashboard Cite

l‐cysteine‐modified Fe3O4 nanoparticles (l‐cys@nFe3O4) were synthesized successfully and used as catalyst to activate persulfate (PS) for benzene, toluene, ethylbenzene, and xylenes (BTEX) degradation. The composite was fully characterized, and the l‐cys@nFe3O4 had more protrusions and l‐cys was combined on the surface of nFe3O4. The removals of BTEX were 78.2%, 85.1%, 85.3%, 81.2%, respectively, in PS/l‐cys@nFe3O4 system, while only 52.7% 57.8%, 60.8%, and 56.3% of BTEX removals reached under the same condition for nFe3O4 chelated with l‐cys in 48 h. Four successive cycles of BTEX degradation were completed in PS/l‐cys@nFe3O4 system. The synergistic mechanisms of BTEX degradation in PS/l‐cys@nFe3O4 system were investigated by electron paramagnetic resonance (EPR), benzoic acid (BA) probe and X‐ray photoelectron spectroscopy (XPS) tests. SFe bond in l‐cys‐Fe complexes promoted the electron transfer between nFe3O4 core and the solution, iron and iron at the interface, thereby promoting the Fe3+/Fe2+ cycle and the catalytic capacity of nFe3O4. The optimal pH of PS/l‐cys@nFe3O4 system was 3, while HCO3− and Cl− exhibited negative influences on BTEX degradation. Only 14.2%, 15.5%, 15.9%, and 15.6% BTEX had been removed in the presence of 0.12‐M PS and 8.0 g/L l‐cys@nFe3O4 under the actual groundwater condition. However, expanding the dosage of PS and l‐cys@nFe3O4 was an effective strategy to overcome the adverse effect. Practitioner Points L‐cys@nFe3O4 were synthesized successfully and used as catalyst to activate PS for BTEX degradation. Four successive cycles of BTEX degradation were completed in PS/L‐cys@nFe3O4 system. lS―Fe bond in L‐cys@nFe3O4 promoted the electron transfer between PS and nFe3O4 core.

show abstract

One‐step hydrothermal synthesis of magnetic nitrogen‐doped graphene for magnetic solid‐phase extraction of nonsteroidal anti‐inflammatory drugs in environmental water samples

Wei

Xue

et al. 2020

J of Separation Science

View full text Add to dashboard Cite

Graphene oxide has received extensive attention because of its unique properties and potential applications. In this study, magnetic nitrogen‐doped graphene was prepared by one‐step hydrothermal reaction using urea as the dopant and reductant, and ferroferric oxide nanoparticles were in situ deposited on the surface of the nanohybrids. The magnetic nitrogen‐doped graphene was characterized using various physical and chemical methods. It was used as a new adsorbent for the magnetic solid‐phase extraction of four nonsteroidal anti‐inflammatory drugs from the river water. The parameters influencing the extraction efficiency were optimized in detail. Under optimal conditions, this method provided a wide linear range (5–200 ng/mL). The limits of detection were in the range of 1.07–5.10 ng/mL. The recoveries varied from 81.2 to 121.5% with relative standard deviations of less than 10.8%. Overall, we can conclude that the proposed method offers an efficient pretreatment and enrichment and can be successfully applied for the extraction and determination of nonsteroidal anti‐inflammatory drugs in complex matrices.

show abstract

Evaluation of three dimensional high nitrogen doped graphene as an efficient sorbent for the preconcentration of BTEX compounds in environmental samples

Abstract: A simple and highly sensitive method that involves SPE-GC with three dimensional high nitrogen doped graphene as a novel sorbent used for determination of BTEX compounds in environmental samples.

Cited by 14 publications

References 50 publications

Artificial N-doped Graphene Protective Layer Enables Stable Zn Anode for Aqueous Zn-ion Batteries

Artificial N-doped Graphene Protective Layer Enables Stable Zn Anode for Aqueous Zn-ion Batteries

l‐cysteine‐modified Fe₃O₄ nanoparticles as a novel heterogeneous catalyst for persulfate activation on BTEX removal

One‐step hydrothermal synthesis of magnetic nitrogen‐doped graphene for magnetic solid‐phase extraction of nonsteroidal anti‐inflammatory drugs in environmental water samples

Contact Info

Product

Resources

About

Evaluation of three dimensional high nitrogen doped graphene as an efficient sorbent for the preconcentration of BTEX compounds in environmental samples

Abstract: A simple and highly sensitive method that involves SPE-GC with three dimensional high nitrogen doped graphene as a novel sorbent used for determination of BTEX compounds in environmental samples.

Cited by 14 publications

References 50 publications

Artificial N-doped Graphene Protective Layer Enables Stable Zn Anode for Aqueous Zn-ion Batteries

Artificial N-doped Graphene Protective Layer Enables Stable Zn Anode for Aqueous Zn-ion Batteries

l‐cysteine‐modified Fe3O4 nanoparticles as a novel heterogeneous catalyst for persulfate activation on BTEX removal

One‐step hydrothermal synthesis of magnetic nitrogen‐doped graphene for magnetic solid‐phase extraction of nonsteroidal anti‐inflammatory drugs in environmental water samples

Contact Info

Product

Resources

About

l‐cysteine‐modified Fe₃O₄ nanoparticles as a novel heterogeneous catalyst for persulfate activation on BTEX removal