Amino-functionalized titanate nanotubes for highly efficient removal of anionic dye from aqueous solution

Marques, Thalles M.F.; Sales, Débora A.; Silva, Lucinaldo S.; Bezerra, Roosevelt D.S.; Silva, Mateus S.; Osajima, Josy Anteveli; Ferreira, Odair P.; Ghosh, Anupama; Filho, Edson Cavalcanti Silva; Viana, Bartolomeu C.; Matos, José Milton Elias de

doi:10.1016/j.apsusc.2020.145659

Cited by 22 publications

(11 citation statements)

References 44 publications

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“… 45 , 46 Fe/Mn-substituted polyoxometalates/hydrotalcites, graphene oxide nanosheets (GO@Fe 3 O 4 ), and amino-functionalized nanotubes of titanates were exercised for the removal of multiple dyes. 47 − 49 …”

Section: Introductionmentioning

confidence: 99%

“…Iron oxide nanoparticles obtained using the hydrolysis technique was found to be effective for the removal of Congo red (CR) . Alumina-based mixed Al–Co oxide was effective for the removal of Color black G and CR. , SrTiO 3 - and tungsten oxide-based nanoparticles were synthesized by the combustive protocol and used in dye removal. − Fe 3 O 4 /Ag/C materials, layered perovskite La 4 Ni 3 O 10 , and Fe–Al oxide nanocomposite (IMANCs) were found to be promising adsorbents for azo dyes. − Carbon nanocomposites and Fe 2 O 3 (hematite nanoparticles) were used as economic adsorbents for water treatment. − Recently, SiO 2 –Fe Oxide nanoparticles, nanosized Bi 2 WO 6 , and magnesium oxide were synthesized for water treatment. − Nonstoichiometric NiFe 1.98 Re 0.02 O 4 and ZnO·La 2 O 3 ·CeO 2 were also used. , Recently, Fe 3 O 4 –trisodium citrate-based nanocomposite and copper ferrite (CuFe 2 O 4 ) were investigated for dye removal. , Fe/Mn-substituted polyoxometalates/hydrotalcites, graphene oxide nanosheets (GO@Fe 3 O 4 ), and amino-functionalized nanotubes of titanates were exercised for the removal of multiple dyes. − …”

Section: Introductionmentioning

confidence: 99%

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Sucrose-Triggered, Self-Sustained Combustive Synthesis of Magnetic Nickel Oxide Nanoparticles and Efficient Removal of Malachite Green from Water

Mohanta

Dey²,

Dey

2020

ACS Omega

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Dye-containing industrial effluents create major concern nowadays. To address the problem, magnetic nickel oxide nanoparticles (NONPs) were synthesized using the autopropagator combustion technique assisted by sucrose as fuel and used for the removal of toxic malachite green (MG) from water. The material was characterized by scanning electron microscopy (SEM–EDS), Fourier-transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), vibrating sample magnetism (VSM), point of zero charge (pH ZPC ), and Brunauer–Emmet–Teller surface area analysis. SEM images show flowerlike texture with the presence of multiple pores. VSM reveals a well-defined hysteresis at room temperature, confirming a permanent magnetic nature of the material. pH ZPC was found to be 6.63, which enables dye separation in the drinking water pH range. MG removal from water was carried out in the batch mode with optimized physicochemical parameters such as contact time, pH, temperature, and dose. Langmuir adsorption capacity was estimated to be 87.72 mg/g. Pseudo-second order kinetics ( R 2 = 0.999) and Langmuir isotherm model ( R 2 = 0.997) were found to best fit. The magnetic nature facilitates fast and quantitative separation of NONPs from solution using a hand-held magnet. Dye-loaded NONPs can be easily regenerated up to 89% and reused up to five cycles without significant loss of activity. The mechanism of adsorption is proposed to be a combination of electrostatic attraction and weak hydrogen bonding. Strategically designed straightforward synthetic protocol, low cost, high uptake capacity, and sustainable use render NONPs an ideal alternative for future dye treatment.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Sucrose-Triggered, Self-Sustained Combustive Synthesis of Magnetic Nickel Oxide Nanoparticles and Efficient Removal of Malachite Green from Water

Mohanta

Dey²,

Dey

2020

ACS Omega

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“…Transforming TiO 2 nanopowder into TNTs yields a material with very large specific surface area [ 27 ] which, also possesses an ion-exchangeable layered structure [ 28 ]. Further modifications of TNTs by ion doping or decorating its surface with organic molecules and nanoparticles can enhance the adsorption properties of TNTs [ 29 , 30 , 31 ]. An additional advantage is that the titanate nanotubes does not contain toxic substances, as shown by recent studies [ 32 , 33 ].…”

Section: Introductionmentioning

confidence: 99%

The Use of Ultra-Small Fe3O4 Magnetic Nanoparticles for Hydrothermal Synthesis of Fe3+-Doped Titanate Nanotubes

et al. 2020

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A method of the hydrothermal synthesis of Fe3+-doped titanate nanotubes (TNT) is reported in which the ultra-small Fe3O4 nanoparticles are used as the sources of Fe3+ ions. The magnetic nanoparticles with a diameter of about 2 nm are added during the washing stage of the hydrothermal procedure. During washing, they gradually degrade and at the same time, the titanate product is transformed into nanotubes. The obtained nanotubes were characterized by structural and magnetic measurements. It was found that, depending on the value of the external magnetic field, they may show the property of room temperature ferromagnetism, paramagnetism or they may be diamagnetic. It was also shown that the modified TNTs have greater photocatalytic activity compared to unmodified TNTs.

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“…Figure 2 shows the vibrational spectra around 170 and 198 cm −1 attributed to the vibrational modes of the Na-O-Ti links; another band located around 285, 460, 665, and 705 cm −1 can also be observed, corresponding to the crystal photos elongation of the Ti-O-Ti junctions in the TiO 6 octahedron; 895 and 915 cm −1 modes represent the stretching vibration of the Ti-O terminal bond connections not shared at the terminations of the TiO 6 octahedron connections that involve stretching modes, which are a type of terminal bond that exits the outer walls of the nanotube and that can interact with other molecules and Ti-O-Na vibrations in the interlayer regions of nanotube walls. In Figures 2(b)-2(e), three spectroscopy images for 285, 450, 665, and 915 cm −1 , respectively, with a full scale of 6 um can also be seen, where a spectroscopic image of the powdered agglomerates can be seen; these vibrational modes in the Na-TiNT sample indicate that the outer surface of the nanotubes is where the Ti-O bonds are found [23,32,33].…”

Section: Raman Spectroscopymentioning

confidence: 89%

“…e titanate nanotubes were synthesized by the conventional hydrothermal method based on the synthesis reported in Kasuga et al [20], and it was performed using the procedure adapted from Wang et al [21], Viana et al [22], and Marques et al [23]. In this process, 3 g of TiO 2 (anatase) powder was dispersed in 90 mL of a 10 mol/L aqueous sodium hydroxide (NaOH) solution and stirred for 30 minutes.…”

Section: Synthesis Of Na-tint Nanocrystalsmentioning

confidence: 99%

Na-TiNT Nanocrystals: Synthesis, Characterization, and Antibacterial Properties

Agressott

Oliveira

Freitas

et al. 2022

Bioinorganic Chemistry and Applications

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Titanium nanotubes have attractive morphological and physicochemical properties for several applications, such as high surface area, mesoporous structure, good stability, ion exchange capacity, and antibacterial property. Therefore, the field of nanotube applications is increasingly expanding, such as in solar cells sensitized by dye, photocatalysis, and antibacterial activity, among others. Therefore, a study of the antibacterial properties of sodium titanate nanotubes (Na-TiNTs) was carried out together with physicochemical characterizations, such as Raman spectroscopy which shows a peak characteristic of Na-O-Ti from nanotube-agglomerated regions. The XRD diffractogram confirmed the Raman spectra and evidenced the crystalline structure associated to Na-TiNT, which showed the characteristic peaks of the sodium trititanate crystal. SEM and TEM images showed the morphology of hollow nanotubes and forming semispherical particles. EDS shows the percentage values of each of the compounds in the Na-TiNT. The bacterial activity of the Na-TiNT was analyzed in Escherichia coli, Staphylococcus aureus, and Pseudomonas aeruginosa. Na-TiNT modified the activity of the gentamicin and norfloxacin antibiotics against multiresistant strains. Synergistic effects against Gram-positive S. aureus 10 and Gram-negative P. aeruginosa 15 bacteria were observed when the Na-TiNT was associated with gentamicin, reducing the concentration of this antibiotic that is required to inhibit bacterial growth. Another synergic effect was observed for S. aureus 10 with norfloxacin.

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Amino-functionalized titanate nanotubes for highly efficient removal of anionic dye from aqueous solution

Cited by 22 publications

References 44 publications

Sucrose-Triggered, Self-Sustained Combustive Synthesis of Magnetic Nickel Oxide Nanoparticles and Efficient Removal of Malachite Green from Water

Sucrose-Triggered, Self-Sustained Combustive Synthesis of Magnetic Nickel Oxide Nanoparticles and Efficient Removal of Malachite Green from Water

The Use of Ultra-Small Fe3O4 Magnetic Nanoparticles for Hydrothermal Synthesis of Fe3+-Doped Titanate Nanotubes

Na-TiNT Nanocrystals: Synthesis, Characterization, and Antibacterial Properties

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