Carbon dots/silica nanoaggregates for highly efficient adsorption of alizarin red S and malachite green dyes

Li, Xiaoyü; Wang, Wei-Rong; Xue, Rong-Chao; Chen, Peiyao; Wang, Yong; Yu, Lu

doi:10.1039/d3nj01273e

Cited by 3 publications

(1 citation statement)

References 49 publications

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“…Carbon dots/silica nanoaggregates for dye adsorption were synthesized via a hydrothermal reaction of N-doped carbon dots with (3-aminopropyl)triethoxysilane. With experimental data fitted to the Langmuir isotherm model, these nanoaggregates presented adsorption uptakes of 1327 mg/g for Alizarina Red S and 4091 mg/g for Malachite Green [165].…”

Section: Adsorption Of Anionic and Cationic Dyes On Nanomaterialsmentioning

confidence: 99%

Removal of Hazardous Organic Dyes from Liquid Wastes Using Advanced Nanomaterials

Alguacil,

Alonso

2024

Preprint

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The presence of organic dyes in aqueous environments is of extreme hazardousness against life due to the toxicity of these compounds. Thus, its removal from these various aquatic media is of the utmost importance and several technologies are constantly proven to match this goal. Among these technologies, various types of degradation and adsorption are the most widely used, and of the various types of materials used within these technologies, nanomaterials are constantly developed and investigated, probably due to the various properties that these nanomaterials presented. This work reviewed recent developments (2023 year) about the use of these nanomaterials on the treatment of solutions contaminated with these toxic organic dyes.

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Section: Adsorption Of Anionic and Cationic Dyes On Nanomaterialsmentioning

confidence: 99%

Removal of Hazardous Organic Dyes from Liquid Wastes Using Advanced Nanomaterials

Alguacil,

Alonso

2024

Preprint

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Synthesis and application of novel sodium carboxy methyl cellulose-g-poly acrylic acid carbon dots hydrogel nanocomposite (NaCMC-g-PAAc/ CDs) for adsorptive removal of malachite green dye

Majeed,

Idrees,

Mahdi

et al. 2024

Desalination and Water Treatment

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Effective adsorption of malachite green with silica gel supported iron-zinc bimetallic nanoparticles

Ergüt,

Özer

2024

Turkish Journal of Engineering

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In the present study, a composite material consisting of silica gel 60 supported iron-zinc bimetallic nanoparticles (Si/Fe-ZnNPs) was prepared and characterized by SEM, EDX, FTIR, and XRD analysis. The adsorbent properties of the synthesized composite material were evaluated with the removal of Malachite Green (MG). According to characterization results, the cubic structures and agglomerated nano-sized spherical particles (≈30 nm) were formed. The FT-IR spectrum confirms the formation of Fe-Zn NPs through the observation of the Fe-O stretches and metal-metal stretching vibrations of (Zn2+–O2ˉ) adsorption bands. Additionally, the FT-IR revealed the presence of Si-O-Si, Si-O-H stretching, and O-Si-O bending vibrations attributed to silica gel 60. The optimal environmental conditions for adsorption were determined to be a natural pH of 3.2, an adsorption temperature of 50°C, and an adsorbent concentration of 1.0 g/L. An increase in equilibrium uptakes of MG was observed with a linear correlation to initial dye concentrations. Thermodynamic studies indicated that the adsorption process was endothermic, non-spontaneous, and increasing disorder at the solid-solution interface during adsorption with positive ΔH, ΔG, and ΔS values, respectively. The experimental results revealed that the Langmuir isotherm model provided the best fit for the equilibrium data. The maximum monolayer coverage capacity of Si/Fe-ZnNPs was observed to be 666.67 mg/g at an optimum temperature of 50°C. Further analysis displayed that the kinetic adsorption data adhere to the pseudo-second-order kinetic model. Additionally, Weber-Morris model results revealed the effectiveness of both the film and intra-particle diffusion in the adsorption.

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Carbon dots/silica nanoaggregates for highly efficient adsorption of alizarin red S and malachite green dyes

Abstract: Carbon dot-based nanomaterials show great potential for environmental pollution control and remediation application. Herein, carbon dots/silica nanoaggregates for dyes adsorption were easily synthesized via a hydrothermal reaction of N-doped carbon...

Cited by 3 publications

References 49 publications

Removal of Hazardous Organic Dyes from Liquid Wastes Using Advanced Nanomaterials

Removal of Hazardous Organic Dyes from Liquid Wastes Using Advanced Nanomaterials

Synthesis and application of novel sodium carboxy methyl cellulose-g-poly acrylic acid carbon dots hydrogel nanocomposite (NaCMC-g-PAAc/ CDs) for adsorptive removal of malachite green dye

Effective adsorption of malachite green with silica gel supported iron-zinc bimetallic nanoparticles

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