Gellan gum/graphene oxide aerogels for methylene blue purification

Cai, Kunqi; Zheng, Meixia; Xu, Hui; Zhu, Yujing; Zhang, Longtao; Zheng, Baodong

doi:10.1016/j.carbpol.2021.117624

Cited by 23 publications

(8 citation statements)

References 31 publications

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“…The behavior was not consistent with the actual situation; hence, it can be said that it was not fitted for the description of the adsorption isotherms of the polyphenols on TSNs. 30 Similarly, some researchers have also reported that adsorption of Cu( ii ) or methylene blue on starch nanocrystals conforms to the Freundlich isotherm model. 31…”

Section: Resultsmentioning

confidence: 81%

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Nano-encapsulation of polyphenols in starch nanoparticles: fabrication, characterization and evaluation

et al. 2022

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Section: Resultsmentioning

confidence: 81%

“…TSNs. 30 Similarly, some researchers have also reported that adsorption of Cu(II) or methylene blue on starch nanocrystals conforms to the Freundlich isotherm model. 31…”

Section: Food and Function Papermentioning

confidence: 81%

Nano-encapsulation of polyphenols in starch nanoparticles: fabrication, characterization and evaluation

et al. 2022

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“…There are peak values at 3420, 2980, 1640, 1520, 1260 and 1050 cm −1 in the FTIR spectrum of PGO-0, corresponding to O–H, C–H, C=C, N–H, C=C, and C–O flexion and extension vibration, respectively [ 33 ]. The FTIR spectra of GO contain peaks of 3400, 1710, 1630, 1420 and 1070 cm −1 , corresponding to flexion and extension vibration of O–H, C=O, C=C and C–O, respectively [ 34 ]. All peaks in FT-IR spectra of PGO-0 and GO appear in the FT-IR spectrum of PGO-30 aerogels, indicating that the egg white protein combine well with GO to form a novel composite.…”

Section: Resultsmentioning

confidence: 99%

Removal of Methylene Blue by Crosslinked Egg White Protein/Graphene Oxide Bionanocomposite Aerogels

Jin

et al. 2022

Nanomaterials

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Egg white protein is a non-toxic and biodegradable biopolymer that forms a gel easily via simple thermal denaturation treatment. A novel aerogel on the basis of egg white protein crosslinked with graphene oxide was prepared via a facile freeze-drying method. The structure and physicochemical characteristics of the aerogels were characterized by scanning electron microscopy (SEM), Fourier transform infrared (FTIR) spectroscopy, thermogravimetric analysis (TGA) and Brunauer–Emmett–Teller (BET) analysis. The adsorption properties of the aerogels were investigated by studying the influencing factors such as the solution pH, dose, temperature and contact time. The adsorption capacity of methylene blue onto the aerogels was tested, whose maximum adsorption capacity, calculated by the Langmuir isotherm equation, reached 91.7 mg/g. Adsorption kinetics studies showed that the adsorption followed the pseudo-second-order kinetic model. Thermodynamic data implied that methylene blue adsorbed by the aerogels was an exothermic and spontaneous process.

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“…The widespread use of GG is mainly due to its ability to retain water in interstitial spaces among polymer chains. It has been used to prepare composite hydrogels or gel beads as the adsorbents for the sorption studies of dyes [58][59][60][61] and heavy metals [62,63] as well as membranes to catch organic contaminants [60,64].…”

Section: Gellan-based Membranesmentioning

confidence: 99%

Carbon nanomaterial-based membranes in solid-phase extraction

et al. 2023

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Carbon nanomaterials (CNMs) have some excellent properties that make them ideal candidates as sorbents for solid-phase extraction (SPE). However, practical difficulties related to their handling (dispersion in the atmosphere, bundling phenomena, reduced adsorption capability, sorbent loss in cartridge/column format, etc.) have hindered their direct use for conventional SPE modes. Therefore, researchers working in the field of extraction science have looked for new solutions to avoid the above-mentioned problems. One of these is the design of CNM-based membranes. These devices can be of two different types: membranes that are exclusively composed of CNMs (i.e. buckypaper and graphene oxide paper) and polysaccharide membranes containing dispersed CNMs. A membrane can be used either as a filter, operating under flow-through mode, or as a rotating device, operating under the action of magnetic stirring. In both cases, the main advantages arising from the use of membranes are excellent results in terms of transport rates, adsorption capability, high throughput, and ease of employment. This review covers the preparation/synthesis procedures of such membranes and their potential in SPE applications, highlighting benefits and shortcomings in comparison with conventional SPE materials (especially, microparticles carbonaceous sorbents) and devices. Further challenges and expected improvements are addressed too. Graphical Abstract

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Gellan gum/graphene oxide aerogels for methylene blue purification

Cited by 23 publications

References 31 publications

Nano-encapsulation of polyphenols in starch nanoparticles: fabrication, characterization and evaluation

Nano-encapsulation of polyphenols in starch nanoparticles: fabrication, characterization and evaluation

Removal of Methylene Blue by Crosslinked Egg White Protein/Graphene Oxide Bionanocomposite Aerogels

Carbon nanomaterial-based membranes in solid-phase extraction

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