Abstract:The adsorption of methylene blue (MB) on graphene‐based adsorbents was tested through the batch experimental method. Two types of graphene‐based adsorbents as graphene oxide (GO) and reduced graphene oxide (RGO) were compared to investigate the best adsorbent for MB removal. So that optimizing the MB removal for the selected type of graphene‐based adsorbent, the diverse experimental factors, as pH (2–10), contact time (0–1440 min), adsorbent dosage (0.5–2 g/L), and initial MB concentration (25–400 mg/L) were a… Show more
“…Compared with CC-SFS, CC-SFS-MB has many new peaks, such as 1605, 1393, and 1348 cm À1 , which correspond to C═C, S═O, and C═N vibrations. [34] These FTIR results confirmed that the MB molecules have been grafted on the CC-SFS successfully.…”
The layered material of sodium ferric silicate (SFS) has good adsorption properties for cationic dyes, but its stacking properties limit its application. The organic-inorganic composite assembled by macromolecular polymer and inorganic material can improve this situation. Carboxymethyl chitosan (CC) was loaded onto SFS, and the compound was characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), transmission electron microscope (TEM), Brunauer-Emmett-Teller (BET), zero energy thermonuclear assembly (Zeta), and Fourier transform infrared spectroscopy (FT-IR). The results showed that CC was successfully supported in the layered structure of SFS, and the adsorption capacity of the composite for methylene blue (MB) was 729.67 mg g À1 . The adsorption process was described by pseudo second-order kinetics, Langmuir isothermal equation, and intraparticle diffusion. The adsorption process was endothermic and spontaneous, and the monomolecular adsorption was dominant.
“…Compared with CC-SFS, CC-SFS-MB has many new peaks, such as 1605, 1393, and 1348 cm À1 , which correspond to C═C, S═O, and C═N vibrations. [34] These FTIR results confirmed that the MB molecules have been grafted on the CC-SFS successfully.…”
The layered material of sodium ferric silicate (SFS) has good adsorption properties for cationic dyes, but its stacking properties limit its application. The organic-inorganic composite assembled by macromolecular polymer and inorganic material can improve this situation. Carboxymethyl chitosan (CC) was loaded onto SFS, and the compound was characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), transmission electron microscope (TEM), Brunauer-Emmett-Teller (BET), zero energy thermonuclear assembly (Zeta), and Fourier transform infrared spectroscopy (FT-IR). The results showed that CC was successfully supported in the layered structure of SFS, and the adsorption capacity of the composite for methylene blue (MB) was 729.67 mg g À1 . The adsorption process was described by pseudo second-order kinetics, Langmuir isothermal equation, and intraparticle diffusion. The adsorption process was endothermic and spontaneous, and the monomolecular adsorption was dominant.
“…A typical diffraction peak at 2θ around 10.02 indicated that graphene has transformed into a compound due to oxygen-containing functional groups. [23,24] We selected Truesoft™ because it is a widely used acrylate-based dental relining material. Incorporating low weight fraction of GO nanosheets enhanced the physical properties of RDL without negatively affecting the surface roughness and the wettability properties possibly confirm our hypothesis.…”
Section: Discussionmentioning
confidence: 99%
“…A typical diffraction peak at 2 θ around 10.02° indicated that graphene has transformed into a compound due to oxygen‐containing functional groups. [ 23,24 ]…”
Resilient denture liners (RDLs) change their hardness in a short time. Hence, their usefulness is limited to the short term only. Therefore, this laboratory study investigated the influence of graphene oxide (GO) nanosheets incorporation on the longevity of a commercially available RDL material. An autopolymerizing acrylic-based RDL was selected for this purpose. The control group (G 0 ) was prepared as such according to the manufacturer's instructions.However, for the G 1 group, 0.1 wt/wt% of GO nanosheet was incorporated in powder of RDL. Similarly, G 2 group and G 3 group were the composites of 0.3 and 0.6 wt/wt% of the GO-resin matrix. A total of 60 disk-shaped samples were prepared, having three subgroups with 15 disks each (n = 15). Surface roughness, water contact angle, Shore A hardness, water sorption, and solubility parameters were evaluated using a two-way analysis of variance (p < .05). GO nanosheets facilitated in reducing the hardness of RDL without affecting the surface roughness and wettability properties. Additionally, statistically reduced water solubility and sorption values were observed in G 3 group, that is, 0.69 ± 0.25% and 0.93 ± 0.18%, respectively, compared to 1.17 ± 0.13% and 1.41 ± 0.18%, respectively, of the control group at the end of 14-day water immersion. The incorporation of GO nanosheets seems a viable option for the enhanced physical properties and clinical life of RDLs.
“…Methylene blue (MB) dye [25] shell charcoal (GNC) and Eichhornia charcoal (EC). The results showed that CR adsorption on GNC and EC followed a second request motor model.…”
Because of their ubiquitous industrial usage, dyes are significant water pollutants. Adsorption is an effective method for eliminating colors from tainted water. In the twenty‐first century, industrialization is growing at a dizzying rate. During this stage, more noble colors and dyes are used. These hues contribute to a wide range of contaminants, including water, soil, and air pollution. The objective of this report is just to discuss the chemical and bio‐based adsorbents used to remove various types of industrial dyes. Several adsorption isotherm assumptions and mathematical formulations were investigated. The effect of a variety of factors on adsorption phenomena is addressed.
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