Novel carbon based bioactive nanocomposites of aniline/indole copolymer for removal of cationic dyes from aqueous solution: kinetics and isotherms

Rouhi, Mona; Lakouraj, Moslem Mansour; Tashakkorian, Hamed; Hasantabar, Vahid

doi:10.1039/c8nj02924e

Cited by 21 publications

(21 citation statements)

References 37 publications

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“…A rapid initial phase, in which the quantity adsorbed increases strongly during the first 60 min. It may be justified by adsorption on the external surface and many sites accessible on the surface of the adsorbent in the initial stage (Rouhi et al , 2019). A second phase, slower with a low contribution to the total adsorption of dye.…”

Section: Resultsmentioning

confidence: 99%

Removal of Congo red from aqueous solution in single and binary mixture systems using Argan nutshell wood

Khomri

Messaoudi

Dbik

et al. 2021

PRT

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Purpose Argan nutshell wood (ANW) has been used in this study as an agricultural solid waste to remove Congo red (CR) from an aqueous solution in single and mixture binary in the presence of methylene blue (MB) or crystal violet (CV). Design/methodology/approach The ANW was characterized by Fourier transform infrared and scanning electron microscope analysis. The effect of ANW dose (8–40 gL−1), contact time (0–180 min), pH of the solution (4–11) and CR dye concentration (100–500 mgL−1) on CR adsorption was studied in batch mode and evaluated by kinetic and isotherm models in a single system. In the binary system, the CR removal was studied from a CR + MB and CR + CV mixture with different percentages of dyes, ranging from 0% to 100%. Findings The pseudo-second-order and the Langmuir models could best describe the CR sorption onto ANW in a single system. In addition, in the case of the binary system, there is the appearance of a synergistic phenomenon between the CR and the other cationic dyes and the CR adsorption capacity increased until 12.24 mg g-1 and 12.06 mg g-1 in the presence of the MB and CV in the mixture, respectively. Practical implications This study demonstrated that ANW prepared can be suggested as an excellent potential adsorbent to remove dyes from wastewaters from single and mixture systems. Originality/value This study is original.

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Section: Resultsmentioning

confidence: 99%

Removal of Congo red from aqueous solution in single and binary mixture systems using Argan nutshell wood

Khomri

Messaoudi

Dbik

et al. 2021

PRT

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“…The adsorption of CR on the surface of the synthesized materials was recorded in dark conditions, and the results in Figure 9 (dash lines) display the removal of the dye, even in dark conditions, using all the compounds. Graphene is an effective adsorbent due to its high surface area and unique electronic properties [37][38][39][40]. The electrostatic forces and π-π stacking in the graphene structure could be responsible for enhancing the adsorption capacity [40][41][42][43][44].…”

Section: Photocatalytic Studymentioning

confidence: 99%

“…Graphene is an effective adsorbent due to its high surface area and unique electronic properties [37][38][39][40]. The electrostatic forces and π-π stacking in the graphene structure could be responsible for enhancing the adsorption capacity [40][41][42][43][44]. In addition, the oxygenated functional groups could be effective at potential adsorption [45].…”

Section: Photocatalytic Studymentioning

confidence: 99%

A Novel N-Doped Nanoporous Bio-Graphene Synthesized from Pistacia lentiscus Gum and Its Nanocomposite with WO3 Nanoparticles: Visible-Light-Driven Photocatalytic Activity

2021

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This paper reports the synthesis of a new nitrogen-doped porous bio-graphene (NPBG) with a specific biomorphic structure, using Pistacia lentiscus as a natural carbon source containing nitrogen that also acts as a bio-template. The obtained NPBG demonstrated the unique feature of doped nitrogen with a 3D nanoporous structure. Next, a WO3/N-doped porous bio-graphene nanocomposite (WO3/NPBG-NC) was synthesized, and the products were characterized using XPS, SEM, TEM, FT-IR, EDX, XRD, and Raman analyses. The presence of nitrogen doped in the structure of the bio-graphene (BG) was confirmed to be pyridinic-N and pyrrolic-N with N1 peaks at 398.3 eV and 400.5 eV, respectively. The photocatalytic degradation of the anionic azo dyes and drugs was investigated, and the results indicated that the obtained NPBG with a high surface area (151.98 m2/g), unique electronic properties, and modified surface improved the adsorption and photocatalytic properties in combination with WO3 nanoparticles (WO3-NPs) as an effective visible-light-driven photocatalyst. The synthesized WO3/NPBG-NC with a surface area of 226.92 m2/g displayed lower bandgap and higher electron transfer compared with blank WO3-NPs, leading to an increase in the photocatalytic performance through the enhancement of the separation of charge and a reduction in the recombination rate. At the optimum conditions of 0.015 g of the nanocomposite, a contact time of 15 min, and 100 mg/L of dyes, the removal percentages were 100%, 99.8%, and 98% for methyl red (MR), Congo red (CR), and methyl orange (MO), respectively. In the case of the drugs, 99% and 87% of tetracycline and acetaminophen, respectively, at a concentration of 10 mg/L, were removed after 20 min.

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“…In experiment, the 40 mL solution which contained 10 mg adsorbents (NCG-2-N, NCG-1, NCG-2 and NCG-3) with different MB concentration (80 mg L −1 -120 mg L −1 ) at different pH (3)(4)(5)(6)(7)(8)(9)(10)(11), temperatures (298.15 K-318.15K) were conducted. The UV-vis spectrophotometer were used to determine the MB concentration (wave length=665 nm).…”

Section: Adsorption Experimentsmentioning

confidence: 99%

“…Among all such adsorbents, carbon-based materials have received more attention due to their high efficiency for dye adsorption and the prevention of secondary pollutants. [10][11][12][13] To further enhance the dye adsorption capacity of carbon materials, preparing carbon materials with large surface area, appropriate pore size or modified surface properties are the main methods used to obtain better dye performance. Heteroatom doping is often deemed an effective way to obtain the abovementioned features of carbon-based materials.…”

Section: Introductionmentioning

confidence: 99%

Nitrogen-doped graphene-like carbon material derived via a simple, cost-effective method as an excellent adsorbent for methylene blue adsorption

et al. 2020

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Nitrogen-enriched graphene-like carbon materials were successfully prepared via pyrolysis of a mixture of melamine, ammonia chloride (NH4Cl) and polyvinyl pyrrolidone (PVP) at a mild temperature without inert gas protection. Different techniques were used to analyze the physical and chemical properties of the products. All the prepared materials showed excellent performance in methylene blue (MB) adsorption, In particular, the materials prepared with 3 g polyvinyl pyrrolidone (PVP) (NCG-2) exhibited the best performance, a very high maximum adsorption capacity of 348.2 mg/g, much larger than many reported materials. The high adsorption capacity of the Nitrogen-doped graphene-like carbon materials was possible due to its uniform porous structure, high specific surface area. Moreover, NCG-2 could be recycled and only a only slightly decreased in the removal efficiency were observed after 5 cycles.

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Novel carbon based bioactive nanocomposites of aniline/indole copolymer for removal of cationic dyes from aqueous solution: kinetics and isotherms

Abstract: In this study, a copolymer of aniline and indole P(ANI-co-IN) and its nanocomposites based on graphene oxide (GO) and functional carbon nanotubes (CNT-COOH) were synthesized by heterogeneous emulsion polymerization.

Cited by 21 publications

References 37 publications

Removal of Congo red from aqueous solution in single and binary mixture systems using Argan nutshell wood

Removal of Congo red from aqueous solution in single and binary mixture systems using Argan nutshell wood

A Novel N-Doped Nanoporous Bio-Graphene Synthesized from Pistacia lentiscus Gum and Its Nanocomposite with WO3 Nanoparticles: Visible-Light-Driven Photocatalytic Activity

Nitrogen-doped graphene-like carbon material derived via a simple, cost-effective method as an excellent adsorbent for methylene blue adsorption

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