Ultrasound-assisted adsorption of paraquat herbicide from aqueous solution by graphene oxide/ mesoporous silica

Dehghani, Z.; Sedghi-Asl, Mohammad; Ghaedi, Mehrorang; Sabzehmeidani, Mohammad Mehdi; Adhami, E.

doi:10.1016/j.jece.2021.105043

Cited by 35 publications

(12 citation statements)

References 84 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These eco-friendly nanosponges could reuse many times using a washable solvent and it could be applied in a dynamic method or semi-pilot scale to evaluate the adsorption performance. [20] 0.02 g in 0.01 L 10-200 mg/L 21.9 mg/g Magnetic adsorbent [24] 0.0025 g in 0.005 L 30-900 mg/L 242.2 mg/g Carbon nanotubes [17] 0.002 g in 0.005 L 70-250 mg/L 218.6 mg/g Graphene oxide [22] 0.02 g in 0.025 L 4-24 mg/L 29.15 mg/g Bentonite [13] 0.04 g in 0. The regeneration of nanosponges was carried out to evaluate the cost-effectiveness of the adsorption process and the usability of nanosponges.…”

Section: Isotherm Studymentioning

confidence: 99%

“…Moreover, the contaminant solution could be treated by different methods such as the Fenton reaction, oxidation, photocatalytic degradation, or other convenient methods before releasing and the reuse solution could be separate from other solvents before recycling. [20] 0.02 g in 0.01 L 10-200 mg/L 21.9 mg/g Magnetic adsorbent [24] 0.0025 g in 0.005 L 30-900 mg/L 242.2 mg/g Carbon nanotubes [17] 0.002 g in 0.005 L 70-250 mg/L 218.6 mg/g Graphene oxide [22] 0.02 g in 0.025 L 4-24 mg/L 29.15 mg/g Bentonite [13] 0.04 g in 0.025 L 4-24 mg/L 11. 75 The regeneration of nanosponges was carried out to evaluate the cost-effectiveness of the adsorption process and the usability of nanosponges.…”

Section: Isotherm Studymentioning

confidence: 99%

“…Biological [6,7], physical [8,9], and chemical treatments [10,11] have all been informed in the previous studies for PQ removal. Different effective adsorbents were elaborated for PQ removal such as activated carbon [12], bentonite [13], bio-based material [14][15][16], carbon nanotubes [17], calixarene [18], cellulose nanofiber [19], cyclodextrin [20,21], graphene oxide [22], kaolin [23], magnetic adsorbent [24,25], microorganisms [26], montmorillonite [27], pillararene [28], and silica [29,30].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Adsorption of Cationic Contaminants by Cyclodextrin Nanosponges Cross-Linked with 1,2,3,4-Butanetetracarboxylic Acid and Poly(vinyl alcohol)

2022

View full text Add to dashboard Cite

Cationic organic pollutants (dyes and pesticides) are mainly hydrosoluble and easily contaminate water and create a serious problem for biotic and abiotic species. The elimination of these dangerous contaminants from water was accomplished by adsorption using cyclodextrin nanosponges. These nanosponges were elaborated by the cross-linking between 1,2,3,4-butanetetracarboxylic acid and β-cyclodextrin in the presence of poly (vinyl alcohol). Their physicochemical characteristics were characterized by gravimetry, acid-base titration, TGA, 13C NMR, ATR-FTIR, Raman, X-ray diffraction, and Stereomicroscopy. The BP5 nanosponges displayed 68.4% yield, 3.31 mmol/g COOH groups, 0.16 mmol/g β-CD content, 54.2% swelling, 97.0% PQ removal, 96.7% SO removal, and 98.3% MG removal for 25 mg/L of initial concentration. The pseudo-second-order model was suitable for kinetics using 180 min of contact time. Langmuir isotherm was suitable for isotherm with the maximum adsorption of 120.5, 92.6, and 64.9 mg/g for paraquat (PQ), safranin (SO), and malachite green (MG) adsorption, respectively. Finally, the reusability performance after five regeneration times reached 94.1%, 91.6%, and 94.6% for PQ, SO, and MG adsorption, respectively.

show abstract

Section: Isotherm Studymentioning

confidence: 99%

Section: Isotherm Studymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Adsorption of Cationic Contaminants by Cyclodextrin Nanosponges Cross-Linked with 1,2,3,4-Butanetetracarboxylic Acid and Poly(vinyl alcohol)

2022

View full text Add to dashboard Cite

show abstract

“…A maximum removal of 31.34 mg/g of PQ was achieved at optimal conditions of GO/SiO 2 mass of 0.02 (g), PQ concentration of 14 (mg/L) and pH of 7 in 2 minutes at temperature of 25 °C. [154] Three possible mechanisms of organic molecules and inorganic ions interacting with GO-hybrids were proposed. The electrostatic interactions, π-π electron donor-acceptor interactions of the adsorbent and the adsorbate and the role of active binding sites for the adsorbate by the oxygen containing groups.…”

Section: Environmental Remediationmentioning

confidence: 99%

Contemporary, Multidisciplinary Roles of Mesoporous Silica Nanohybrids/Nanocomposites

2022

View full text Add to dashboard Cite

Number of nanomaterials have been produced as a result of the growth of nanoscience and nanotechnology, and have found applications in interdisciplinary sectors in which nanotechnology has now become indispensable. Owing to the better properties over individual nanomaterials, the hybrid materials have been broadly studied. Mesoporous silica nanoparticles (MS Nps) have been employed as a matrix in the synthesis of nanohybrids and as a filler in nanocomposites due to its high porosity, adjustable pore volume, facile functionalization, thermal and chemical stability and less toxicity. So far, versatile MS Nps hybrids and composites have been synthesized as advanced smart materials to be applied across industrial and biological sectors. This review study gives an up‐to‐date viewpoint on the synthesis and uses of mesoporous silica nanohybrids and nanocomposites particularly in biomedical sectors, agricultural and food industries and in environmental remediation followed by future insights and research directions of MS Np hybrids and composites.

show abstract

“…Physical [ 12 , 13 ], biological [ 14 , 15 ], and chemical treatments [ 16 , 17 , 18 , 19 , 20 , 21 , 22 ] have all been reported in the literature for PQ removal. An adsorption process has recently been investigated for PQ removal, which was applied for both organic and inorganic materials such as bio-based material [ 23 , 24 , 25 ], bentonite [ 26 , 27 ], microorganisms [ 28 ], activated carbon [ 29 , 30 ], kaolin [ 31 ], pillararene [ 32 , 33 ], calixarene [ 34 , 35 , 36 ], graphene oxide [ 37 ], carbon nanotubes [ 38 , 39 ], silica [ 40 , 41 ], magnetic adsorbent [ 42 , 43 ], montmorillonite [ 44 , 45 ], cellulose nanofiber [ 46 , 47 ], and cyclodextrin [ 48 ].…”

Section: Introductionmentioning

confidence: 99%

Adsorption of Paraquat by Poly(Vinyl Alcohol)-Cyclodextrin Nanosponges

2021

View full text Add to dashboard Cite

The contamination of hydrosoluble pesticides in water could generate a serious problem for biotic and abiotic components. The removal of a hazardous agrochemical (paraquat) from water was achieved by adsorption processes using poly(vinyl alcohol)-cyclodextrin nanosponges, which were prepared with various formulations via the crosslinking between citric acid and β-cyclodextrin in the presence of poly(vinyl alcohol). The physicochemical properties of nanosponges were also characterized by different techniques, such as gravimetry, thermogravimetry, microscopy (SEM and Stereo), spectroscopy (UV-visible, NMR, ATR-FTIR, and Raman), acid-base titration, BET surface area analysis, X-ray diffraction, and ion exchange capacity. The C10D-P2 nanosponges displayed 60.2% yield, 3.14 mmol/g COOH groups, 0.335 mmol/g β-CD content, 96.4% swelling, 94.5% paraquat removal, 0.1766 m2 g−1 specific surface area, and 5.2 × 10−4 cm3 g−1 pore volume. The presence of particular peaks referring to specific functional groups on spectroscopic spectra confirmed the successful polycondensation on the reticulated nanosponges. The pseudo second-order model (with R2 = 0.9998) and Langmuir isotherm (with R2 = 0.9979) was suitable for kinetics and isotherm using 180 min of contact time and a pH of 6.5. The maximum adsorption capacity was calculated at 112.2 mg/g. Finally, the recyclability of these nanosponges was 90.3% of paraquat removal after five regeneration times.

show abstract

Ultrasound-assisted adsorption of paraquat herbicide from aqueous solution by graphene oxide/ mesoporous silica

Cited by 35 publications

References 84 publications

Adsorption of Cationic Contaminants by Cyclodextrin Nanosponges Cross-Linked with 1,2,3,4-Butanetetracarboxylic Acid and Poly(vinyl alcohol)

Adsorption of Cationic Contaminants by Cyclodextrin Nanosponges Cross-Linked with 1,2,3,4-Butanetetracarboxylic Acid and Poly(vinyl alcohol)

Contemporary, Multidisciplinary Roles of Mesoporous Silica Nanohybrids/Nanocomposites

Adsorption of Paraquat by Poly(Vinyl Alcohol)-Cyclodextrin Nanosponges

Contact Info

Product

Resources

About