A novel graphene oxide-carbon nanotubes anchored α-FeOOH hybrid activated persulfate system for enhanced degradation of Orange II

Su, Shanshan; Liu, Yuyang; He, Wei; Tang, Xianchun; Jin, Wei; Zhao, Yaping

doi:10.1016/j.jes.2019.02.015

Cited by 70 publications

(10 citation statements)

References 78 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In Figure 4d, the Fe 2p 3/2 and the Fe 2p 1/2 XPS spectrums demonstrate that the peaks of binding energies are around 711.0 eV and 724.6 eV. The satellite peak indicates the characteristic peaks of γ-Fe 2 O 3 , which suggests the presence of Fe (III) on the rGO surface [35]. Figure 4b) contained three main components including the C-C/C=C (284.8 eV), C-O (285.9 eV), and C=O (288.8 eV) functional groups, which are in great agreement with previously reported work.…”

Section: Characterizationmentioning

confidence: 90%

“…In Figure 4d, the Fe 2p3/2 and the Fe 2p1/2 XPS spectrums demonstrate that the peaks of binding energies are around 711.0 eV and 724.6 eV. The satellite peak indicates the characteristic peaks of γ-Fe2O3, which suggests the presence of Fe (Ⅲ) on the rGO surface [35]. To investigate the morphologies and microstructures of magnetic materials, their SEM and TEM images were recorded ( Figure 5).…”

Section: Characterizationmentioning

confidence: 99%

See 1 more Smart Citation

Removal of Sulfadiazine Using 3D Interconnected Petal-Like Magnetic Reduced Graphene Oxide (MrGO) Nanocomposites

Zhong

Feng

et al. 2020

Water

View full text Add to dashboard Cite

Adsorption has been regarded as one of the most efficient and economic methods for the removal of antibiotics from aqueous solutions. In this work, different graphene-based magnetic nanocomposites using a modified solvothermal method were synthesized and employed to remove sulfadiazine (SDZ) from water. The adsorption capacity of the optimal magnetic reduced graphene oxide (MrGO) was approximately 3.24 times that of pure Fe3O4. After five repeated adsorption cycles, the removal rate of SDZ (100 μg/L) by MrGO nanocomposites was still around 89.3%, which was only about a 3% decrease compared to that in the first cycle. Mechanism investigations showed that both chemical and physical adsorption contributed to the removal of SDZ. The excellent adsorption performance and recyclability of MrGO nanocomposites could be attributed to their wonderful 3D interconnected petal-like structures. The MrGO with SDZ could be easily recollected by magnetic separation. The MrGO also exhibited excellent adsorption performance in the purification of real polluted water.

show abstract

Section: Characterizationmentioning

confidence: 90%

“…In Figure 4d, the Fe 2p3/2 and the Fe 2p1/2 XPS spectrums demonstrate that the peaks of binding energies are around 711.0 eV and 724.6 eV. The satellite peak indicates the characteristic peaks of γ-Fe2O3, which suggests the presence of Fe (Ⅲ) on the rGO surface [35]. To investigate the morphologies and microstructures of magnetic materials, their SEM and TEM images were recorded ( Figure 5).…”

Section: Characterizationmentioning

confidence: 99%

Removal of Sulfadiazine Using 3D Interconnected Petal-Like Magnetic Reduced Graphene Oxide (MrGO) Nanocomposites

Zhong

Feng

et al. 2020

Water

View full text Add to dashboard Cite

show abstract

“…Recently, graphene has been aroused as a good candidate for organic dye adsorption, due to its excellent and unique properties, such as high surface area, flexibility, and chemical, mechanical and thermal stability 13 – 16 . It was already demonstrated that graphene is an excellent adsorbent for various organic compounds, including organic dyes 17 – 21 . Moreover, the graphene based 3D aerogel nanostructures has shown to be even more efficient adsorbents 22 – 25 that already have practical application for water purification.…”

Section: Introductionmentioning

confidence: 99%

Toward enhanced catalytic activity of magnetic nanoparticles integrated into 3D reduced graphene oxide for heterogeneous Fenton organic dye degradation

Sadegh

Politakos

Román

et al. 2021

Sci Rep

View full text Add to dashboard Cite

Composite Fenton nanocatalyst was prepared by water-based in situ creation of Fe3O4 nanoparticles integrated within the self-assembly 3D reduced graphene oxide (rGO) aerogel. The hybrid applied for the degradation of Acid Green 25 (AG-25) organic dye in an aqueous solution, in the presence of H2O2. By investigating the conditions that maximize the dye adsorption by the 3D composite, it was found that the pH of the solution should be adjusted between the pKa of the functional groups present on the rGO surface (carboxylic acid) and that of the dye (sulfonic acid) to promote electrostatic interactions dye—3D structure. Performed under these conditions, Fenton degradation of AG-25 in presence of H2O2 was completed in less than 30 min, including all the intermediate products, as demonstrated by MALDI–TOF–MS analysis of the aqueous solution after discoloration. Moreover, this was achieved in a solution with as high a dye concentration of 0.5 mg/mL, with only 10 mg of 3D composite catalyst, at room temperature and without additional energy input. The high performance was attributed to the creation of charge-transfer complex between rGO and Fe3O4 nanoparticles throughout covalent bond C–O–Fe, the formation of which was promoted by the in situ synthesis procedure. For the first time, up to the authors’ knowledge, AG-25 degradation mechanism was proposed.

show abstract

“…[13][14][15][16] It was already demonstrated that graphene is an excellent adsorbent for various organic compounds, including organic dyes. [17][18][19][20][21] Moreover, the graphene based 3D aerogel nanostructures has shown to be even more efficient adsorbents [22][23][24][25] that already have practical application for water purification. However, adsorption of pollutants resolves only half of the problem, because the adsorbed dyes should be further either disposed or eliminated.…”

Section: Introductionmentioning

confidence: 99%

Towards Enhanced Catalytic Activity of Magnetic Nanoparticles Integrated into 3D Reduced Graphene Oxide for Heterogeneous Fenton Organic Dye Degradation

Sadegh

Politakos

Sánz

et al. 2021

Preprint

View full text Add to dashboard Cite

Composite Fenton nanocatalyst was prepared by water-based in situ creation of Fe3O4 nanoparticles integrated within self-assembly 3D reduced graphene oxide (rGO) aerogel. It was used for degradation of Acid Green 25 (AG-25) organic dye in aqueous solution, in presence of H2O2. By investigating the conditions that maximize the dye adsorption by the 3D composite, it was found that the pH of the solution should be adjusted between the pKa of the functional groups presented on the rGO surface (carboxylic acid) and that of the dye (sulfonic acid) to promote electrostatic interactions dye − 3D structure. Performed under these conditions, Fenton degradation of AG-25 in presence of H2O2 was completed in less than 30 min, including all the intermediate products, as demonstrated by MALDI-TOF-MS analysis of the aqueous solution after discoloration. Moreover, this was achieved in a solution with as high dye concentration as 0.5 mg/mL, with only 10 mg of 3D composite catalyst, at room temperature and without additional energy input. The high performance was attributed to the creation of charge transfer complex between the rGO and Fe3O4 nanoparticles throughout covalent bond C-O-Fe, the formation of which was promoted by the in situ synthesis procedure.

show abstract

A novel graphene oxide-carbon nanotubes anchored α-FeOOH hybrid activated persulfate system for enhanced degradation of Orange II

Cited by 70 publications

References 78 publications

Removal of Sulfadiazine Using 3D Interconnected Petal-Like Magnetic Reduced Graphene Oxide (MrGO) Nanocomposites

Removal of Sulfadiazine Using 3D Interconnected Petal-Like Magnetic Reduced Graphene Oxide (MrGO) Nanocomposites

Toward enhanced catalytic activity of magnetic nanoparticles integrated into 3D reduced graphene oxide for heterogeneous Fenton organic dye degradation

Towards Enhanced Catalytic Activity of Magnetic Nanoparticles Integrated into 3D Reduced Graphene Oxide for Heterogeneous Fenton Organic Dye Degradation

Contact Info

Product

Resources

About