Ultra-efficient and selective adsorption of cationic dyes by Ti-doped SiO2 functionalized hydrophilic Fe3O4 nanoparticles with superior structural stability

Cai, Huishan; Zhang, Lin; Wei, Ju; Hou, Yongrui; Wei, Yuan; Zhou, Shunli; Jia, Zhenfu; Su, Xiaodong

doi:10.1016/j.jwpe.2023.104729

Cited by 5 publications

(1 citation statement)

References 57 publications

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“…Magnetite (Fe 3 O 4 ) nanoparticles are commonly used as the magnetic core for the preparation of various magnetic adsorbents because of their typical superparamagnetic behavior, high stability, affordability, and low toxicity [13]. Cai et al [14] prepared Fe 3 O 4 @Ti-SiO 2 (FTS), a new magnetic adsorbent with superior pore volume, specific surface area, thermal stability, and surface charge. Fe 3 O 4 nanoparticles worked in concert to enhance the adsorbent's ability to selectively adsorb cationic dyes from complex wastewater, leading to a maximum adsorption capacity of 336.74 mg g −1 for MB.…”

Section: Introductionmentioning

confidence: 99%

A Novel Magnetic Nano-Adsorbent Functionalized with Green Tea Extract and Magnesium Oxide to Remove Methylene Blue from Aqueous Solutions: Synthesis, Characterization, and Adsorption Behavior

Lin,

Huang,

Liu

et al. 2024

Magnetochemistry

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In this study, a novel green tea/Mg-functionalized magnetic nano-adsorbent, denoted as GTE-MgO-Fe3O4 NPs, was developed and applied to the extraction of Methylene Blue (MB) from water-based solutions. The GTE-MgO-Fe3O4 NPs were synthesized by incorporating green tea extracts (GTE) and Mg species onto the surface of Fe3O4 nanoparticles using a hydrothermal method. Characterization analyses corroborated the successful functionalization of the Fe3O4 surface with GTE and Mg species, resulting in a superparamagnetic adsorbent equipped with abundant surface functional groups, which promoted MB adsorption and facilitated magnetic separation. Batch experiments revealed that different operating parameters had an impact on the adsorption behavior, such as adsorbent dosage, pH, coexisting ions, contact time, the initial MB concentration, and temperature. The investigations of adsorption kinetics and isotherms emphasized that the MB adsorption onto GTE-MgO-Fe3O4 NPs was an exothermic process dominated by chemisorption. The experimental adsorption capacity of GTE-MgO-Fe3O4 NPs for MB surpassed 174.93 mg g−1, markedly superior to the performance of numerous other adsorbents. Ultimately, the utilized GTE-MgO-Fe3O4 NPs could be effectively regenerated through acid pickling, retaining over 76% of its original adsorption capacity after six adsorption–desorption cycles, which suggested that GTE-MgO-Fe3O4 NPs was a suitable adsorbent for eliminating MB from effluent.

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Section: Introductionmentioning

confidence: 99%

A Novel Magnetic Nano-Adsorbent Functionalized with Green Tea Extract and Magnesium Oxide to Remove Methylene Blue from Aqueous Solutions: Synthesis, Characterization, and Adsorption Behavior

Lin,

Huang,

Liu

et al. 2024

Magnetochemistry

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A Novel and Economical Approach for the Fusarium Oxysporum Mediated Myco‐Synthesis of Mesoporous Floral‐Shaped Silica Nanoparticles from Coal Fly Ash Waste

Yadav,

Choudhary,

Ali

et al. 2024

Part & Part Syst Charact

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Nanotechnological applications involving the fabrication of potential nanomaterials and novel strategies for mitigation of contaminants have helped a lot in environmental cleanup. The chemical route for silica nanoparticle (NPs) synthesis using tetra ethyl oxy silicone and tetramethyl oxy silicone is expensive and energy intensive. Silica NPs synthesis from coal fly ash waste could prove to be economical. In this study, the investigators have used coal fly ash for silica NPs synthesis via a noble and economical approach. This biosynthetic approach involved two steps: (1) extraction of crude sodium silicate by using alkali treatment of fly ash and (2) the addition of crude sodium silicate to the supernatant of Fusarium oxysporum for fabrication of silica NPs. The developed silica NPs are analyzed by the analytical instruments where the microscopic techniques revealed 10–50 nm‐sized floral‐shaped mycogenic silica NPs. The X‐ray diffraction revealed the amorphous nature of the silica NPs with a broad spectrum starting from 8º and ending at 23º having centered at 13.1°. Fourier transform infrared spectroscopy, in region 400–1200 cm−1, exhibited three distinguishing bands for silica NPs. The current study reports a novel and effective method for the development of silica NPs with a high yield and purity of about 95%.

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Fabrication of a Fe3O4/CS/AgNPs Composite from Indigenous Iron Sand for Enhanced Methylene Blue Adsorption

Ningtyas,

Yanti,

Amin

et al. 2024

J Clust Sci

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Ultra-efficient and selective adsorption of cationic dyes by Ti-doped SiO2 functionalized hydrophilic Fe3O4 nanoparticles with superior structural stability

Cited by 5 publications

References 57 publications

A Novel Magnetic Nano-Adsorbent Functionalized with Green Tea Extract and Magnesium Oxide to Remove Methylene Blue from Aqueous Solutions: Synthesis, Characterization, and Adsorption Behavior

A Novel Magnetic Nano-Adsorbent Functionalized with Green Tea Extract and Magnesium Oxide to Remove Methylene Blue from Aqueous Solutions: Synthesis, Characterization, and Adsorption Behavior

A Novel and Economical Approach for the Fusarium Oxysporum Mediated Myco‐Synthesis of Mesoporous Floral‐Shaped Silica Nanoparticles from Coal Fly Ash Waste

Fabrication of a Fe3O4/CS/AgNPs Composite from Indigenous Iron Sand for Enhanced Methylene Blue Adsorption

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