Robust three-dimensional g-C3N4@cellulose aerogel enhanced by cross-linked polyester fibers for simultaneous removal of hexavalent chromium and antibiotics

Chen, Shujun; Lü, Wangyang; Han, Jiale; Zhong, Huitian; Xu, Tao; Wang, Gangqiang; Chen, Wenxing

doi:10.1016/j.cej.2018.11.110

Cited by 65 publications

(21 citation statements)

References 63 publications

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“…Luo et al researched the processes of synergistic adsorption–photocatalysis of g-C 3 N 4 to get rid of the red 120 pollutants . Chen et al successfully prepared a 3D g-C 3 N 4 @cellulose aerogel and used it to synchronously remove the antibiotics and hexavalent chromium . Sheng et al synthesized a g-C 3 N 4 /TiO 2 heterojunction photocatalyst for photodegradation of methylene blue and phenol …”

Section: Introductionmentioning

confidence: 99%

Insight into Organic Pollutant Adsorption Characteristics on a g-C₃N₄ Surface by Attenuated Total Reflection Spectroscopy and Molecular Dynamics Simulation

et al. 2021

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Herein the adsorption characteristics of zwitterionic dye pollutant Rhodamine B (Rh + B − ) on a g-C 3 N 4 surface were investigated by both an attenuated total reflection spectroscopy (ATRS) experiment and a molecular dynamics simulation (MDS). For experimental investigation, g-C 3 N 4 was coated on a silica optical fiber (SOF) surface to fabricate an adsorption film. According to the ATRS response, adsorption thermodynamics and thermodynamics results were in situ obtained and evaluated. The isothermal Langmuir model was used to calculate the adsorption equilibrium constants (K ads ) and adsorption energies (ΔG ads ) for Rh + B − as 27.25 × 10 4 M −1 and −31.01 kJ mol −1 , respectively, which indicated the spontaneous adsorption behavior of Rh + B − at the g-C 3 N 4 surface. Using dynamic Elovich modeling, the rate constants of Rh + B − were found to be k 1 = 0.0063 min −1 and k 2 = 0.0004 min −1 , which indicated two-stage adsorption at the g-C 3 N 4 surface. For theoretical simulation, adsorption configurations and adsorption energies were systematically calculated by a molecular dynamics simulation (MDS) . Rh + B − molecules were inclined to orient in a parallel position at the g-C 3 N 4 surface during low concentration but a perpendicular position at the g-C 3 N 4 surface during high concentration. Combined with experimental and calculation results, this work revealed the microscopic adsorption performance and elucidated the intermolecular interaction between localized interfaces of g-C 3 N 4 and hazardous dye pollutant. We propose an adsorption model to explain the process of surface interaction, which is based on molecular orientation and a force-driven mechanism. Electrostatic attraction and π−π interaction dominated the adsorption interaction with an adsorption energy of ΔG low(ads) = −38.96 kJ mol −1 for low Rh + B − concentration, and electrostatic attraction dominated the adsorption interaction with an adsorption energy of ΔG high(ads) = −25.76 kJ mol −1 for high Rh + B − concentration. This work can provide a fundamental basis for a dye-pollutants removal application by g-C 3 N 4 in both adsorption and photocatalyzation.

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Section: Introductionmentioning

confidence: 99%

Insight into Organic Pollutant Adsorption Characteristics on a g-C₃N₄ Surface by Attenuated Total Reflection Spectroscopy and Molecular Dynamics Simulation

et al. 2021

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“…The weak bands at 2917 and 2850 cm −1 are assigned to asymmetric and symmetric C–H stretching, respectively. The absorption peak at 1058 cm −1 is attributed to the C–O stretching vibration in CNC structure [24]. Two characteristic absorption bands at about 1565−1479 cm −1 (C=N) and 1380 cm −1 (C–N) in the individual nanostructure of DAN‐COP are attributed to triazine rings in the framework [18].…”

Section: Resultsmentioning

confidence: 99%

A novel nanocomposite based on covalent organic polymer and nanocellulose for thin‐film microextraction of imipramine from biological samples

Dowlatshah

Saraji

Dinari

et al. 2021

J of Separation Science

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A novel covalent organic polymer was prepared using 1,5‐diaminonaphthalene as a linker and cyanuric chloride as a node. A thin‐film nanocomposite of 1,5‐diaminonaphthalene covalent organic polymer and cellulose nanocrystalline was then fabricated via filtering and casting method. The effect of incorporation of various amounts of 1,5‐diaminonaphthalene covalent organic polymer and cellulose nanocrystalline was studied to obtain an efficient nanocomposite thin‐film with a large number of polar functional groups and high mechanical stability. Field emission scanning electron microscopy, X‐ray diffraction, Fourier transform infrared spectrometry, and thermogravimetric analysis techniques were applied for the characterization of physicochemical properties of the prepared materials. Imipramine was determined in the biological samples using thin‐film microextraction followed by gas chromatography flame ionization detection. Parameters affecting the extraction efficiency of imipramine were investigated. Under the optimized conditions, the limit of detection was 0.5 ng/mL. Film‐to‐film reproducibility for three different films fabricated under the same conditions (at three concentration levels) varied between 8.9 and 9.7%. The linear dynamic range covered more than three orders of magnitude (2–5000 ng/mL) with a determination coefficient of 0.9985. The method was successfully applied for preconcentration and determination of imipramine in biological samples with spiking recoveries between 78 and 93%.

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“…Chen et al . [185] prepared powerful cellulose aerogel/blended polyester fibers (3D g-C 3 N 4 @CA/B-PET) via a simple process by supporting g-C 3 N 4 NSs on B-PET reinforced cellulose aerogel (CA). The prepared g-C 3 N 4 @CA/B-PET photocatalyst exhibited a superior photocatalytic performance to treat sulfaquinoxaline sodium and Cr (VI), compared to pristine g-C 3 N 4 .…”

Section: Strategies For Photocatalytic Activity Improvementmentioning

confidence: 99%

Recent advances in photodegradation of antibiotic residues in water

Yang

Chen

Zhao

et al. 2021

Chemical Engineering Journal

287

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Robust three-dimensional g-C3N4@cellulose aerogel enhanced by cross-linked polyester fibers for simultaneous removal of hexavalent chromium and antibiotics

Cited by 65 publications

References 63 publications

Insight into Organic Pollutant Adsorption Characteristics on a g-C₃N₄ Surface by Attenuated Total Reflection Spectroscopy and Molecular Dynamics Simulation

Insight into Organic Pollutant Adsorption Characteristics on a g-C₃N₄ Surface by Attenuated Total Reflection Spectroscopy and Molecular Dynamics Simulation

A novel nanocomposite based on covalent organic polymer and nanocellulose for thin‐film microextraction of imipramine from biological samples

Recent advances in photodegradation of antibiotic residues in water

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Robust three-dimensional g-C3N4@cellulose aerogel enhanced by cross-linked polyester fibers for simultaneous removal of hexavalent chromium and antibiotics

Cited by 65 publications

References 63 publications

Insight into Organic Pollutant Adsorption Characteristics on a g-C3N4 Surface by Attenuated Total Reflection Spectroscopy and Molecular Dynamics Simulation

Insight into Organic Pollutant Adsorption Characteristics on a g-C3N4 Surface by Attenuated Total Reflection Spectroscopy and Molecular Dynamics Simulation

A novel nanocomposite based on covalent organic polymer and nanocellulose for thin‐film microextraction of imipramine from biological samples

Recent advances in photodegradation of antibiotic residues in water

Contact Info

Product

Resources

About

Insight into Organic Pollutant Adsorption Characteristics on a g-C₃N₄ Surface by Attenuated Total Reflection Spectroscopy and Molecular Dynamics Simulation

Insight into Organic Pollutant Adsorption Characteristics on a g-C₃N₄ Surface by Attenuated Total Reflection Spectroscopy and Molecular Dynamics Simulation