Novel and simple way to synthesize Na2Ti6O13 nanoparticles by sonochemical method

Fagundes, N.G.; Nobre, Francisco Xavier; Basilio, L.A.L.; Melo, A. da S.; Bandeira, B.; Sales, Juscelino Chaves; Andrade, Jean Carlos Silva; Anglada-Rivera, J.; Aguilera, L.; Cruz, J. Pérez de la; Leyet, Y.

doi:10.1016/j.solidstatesciences.2018.11.014

Cited by 26 publications

(20 citation statements)

References 28 publications

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“…The excellent concordance of the experimental data with the crystallographic information contained in ICSD card number 67647 was confirmed by checking the residual line (Y obs -Y cal ) and R parameters (R p , R wp , R exp , and χ 2 ), which suggest that these refinements are very available [22,23]. Catalysts 2019, 9, Structural analysis by Rietveld refinement method for Bi2WO6 ( Figure 1b) and Bi2WO6-glyc ( Figure 1c) was performed using Fullprof software [21], which confirmed the orthorhombic structure as the only phase present. It is interesting to note that these crystals exhibit a high degree of crystallinity and purity without diffraction peaks associated with precursors or secondary phases.…”

Section: Figure 1amentioning

confidence: 60%

“…Structural analysis by Rietveld refinement method for Bi 2 WO 6 ( Figure 1b) and Bi 2 WO 6 -glyc ( Figure 1c) was performed using Fullprof software [21], which confirmed the orthorhombic structure as the only phase present. It is interesting to note that these crystals exhibit a high degree of crystallinity and purity without diffraction peaks associated with precursors or secondary phases.…”

Section: Figure 1amentioning

confidence: 85%

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High Photocatalytic Activity under Visible Light for a New Morphology of Bi2WO6 Microcrystals

et al. 2019

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In this work, a new morphology was obtained for bismuth tungstate (Bi 2 WO 6 -glyc) using a hydrothermal method with the addition of glycerol as a surfactant. In order to compare, the bismuth tungstate without glycerol as the surfactant, i.e., Bi 2 WO 6 , was synthesized. Structural characterization by XRD and Rietveld refinement confirmed the orthorhombic structure as a single phase for all samples with high crystallinity. All active modes in Raman spectroscopy for the orthorhombic phase of bismuth tungstate were confirmed in agreement with XRD analysis. N 2 adsorption/desorption and size pore distribution confirmed the high surface area (85.7 m 2 /g) for Bi 2 WO 6 -glyc when compared with Bi 2 WO 6 (8.5 m 2 /g). The optical band gap by diffuse reflectance was 2.78 eV and 2.88 eV for Bi 2 WO 6 -glyc and Bi 2 WO 6 , respectively. SEM images confirmed the different morphology for these materials, and microstructures with cheese crisp were observed for Bi 2 WO 6 -glyc (cheese crisp). On the other hand, flower-like microcrystals were confirmed for Bi 2 WO 6 sample. The photocatalytic performance of Bi 2 WO 6 -glyc (94.2%) in the photodegradation of rhodamine B (RhB) dye solutions at 60 min was more expressive than Bi 2 WO 6 (81.3%) and photolysis (8.2%) at 90 min.

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Section: Figure 1amentioning

confidence: 60%

Section: Figure 1amentioning

confidence: 85%

High Photocatalytic Activity under Visible Light for a New Morphology of Bi2WO6 Microcrystals

et al. 2019

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“…Thus, an energy miser preparation route of battery materials is important. In recent years, NTO has been prepared by various methods such as hydrothermal method [37][38][39], mixing the precursor in agate mortar [40], heat treatment using autoclave [41] and even involving sonochemical method [42]. The hydrothermal method and autoclave heating process involve heat treatment in lower temperature for several hours in the initial stage, followed by annealing at higher temperature for shorter duration.…”

Section: Discussionmentioning

confidence: 99%

Sonochemically synthesized Na2Ti6O13 nanorod: an efficient electrode material for Na-ion battery

Ghosh

2020

Bull Mater Sci

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A simple cost-effective wet synthesis route has been proposed for synthesis of Na 2 Ti 6 O 13 , which is an efficient anode material that can be used for 1-3 volt batteries. The material has been synthesized by sonochemical route, which offers two distinct features: (1) energy-savvy (green) synthesis by significantly lowering the final calcination temperature and duration, and (2) formation of uniform and nano-scale particles suitable for battery application. The sonochemical synthesis was carried out at 20 kHz-500 W by applying sonication for 30 min at 25°C, using precursors (NaOH:TiO 2) in a molar ratio of 6:1 followed by calcination at 750°C for 1 h in air. This material showed excellent reversible electrochemical performance (up to 93% retention) and offers reversible capacity around 40 mAh g-1 acting to be 0.82 V anode for Na-ion battery.

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“…Hitherto nanoparticles have been synthesized by physical, chemical and biological methods. Diverse methods are executed to synthesize metallic nanoparticles, such as chemical, [1] sonochemical, [2] photochemical [3] and spray pyrolysis. [4] Attributed to the ease of use, simple equipment and prudence, the chemical reduction method has been widely applied.…”

Section: Introductionmentioning

confidence: 99%

Biofunctionalized silver and gold nanoparticles as potential curative agents

Velammal

Amaladhas

2020

Applied Organom Chemis

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In this study, the bark of an important medicinal plant, Indigofera aspalathoides is utilized as a bioreductant for the synthesis of silver nanoparticles (AgNPs) and gold nanoparticles (AuNPs). The formation of nanoparticles was monitored, and the reaction parameters were optimized by UV-Vis spectroscopy. The attachment of biocomponents as stabilizer was proved employing Fourier-transform infrared (FT-IR) studies. Through transmission electron microscopy (TEM), the morphology was found to be predominantly spherical and a mixture of triangle and hexagon in the case of AgNPs and AuNPs, respectively. The crystallite size of AgNPs and AuNPs was affirmed through X-ray diffraction (XRD) studies using Sherrer formula as 22.03 and 47.70 nm, respectively. DPPH method was adopted to analyse the freeradical quenching ability, and the AgNPs, AuNPs and extract showed inhibition of 76%, 89% and 59% at a concentration of 200 μg ml −1 , and the corresponding IC 50 values were 86.49, 55.20 and 149.19 μg ml −1. The binding of nanoparticles to calf-thymus DNA (CT-DNA) was through groove and the high binding constants (8.49 × 10 6 M −1 and 2.34 × 10 7 M −1 for AgNPs and AuNPs) point out the potential of these nanoparticles as curative drugs. The MTT assay showed that AgNPs were 100% toxic, and the low IC 50 value suggests that this can be used in the medicinal field as a safe drug.

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Novel and simple way to synthesize Na2Ti6O13 nanoparticles by sonochemical method

Cited by 26 publications

References 28 publications

High Photocatalytic Activity under Visible Light for a New Morphology of Bi2WO6 Microcrystals

High Photocatalytic Activity under Visible Light for a New Morphology of Bi2WO6 Microcrystals

Sonochemically synthesized Na2Ti6O13 nanorod: an efficient electrode material for Na-ion battery

Biofunctionalized silver and gold nanoparticles as potential curative agents

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