Preparation of Fe3O4/MWCNT nanocomposite combined with titanium dioxide using sonochemical and precipitation methods

Taufiq, Ahmad; Qoidah, Siti Nikmatul; Subadra, St. Ulfawanti Intan; Mufti, Nandang; Hidayat, Arif; Sunaryono, Sunaryono

doi:10.1063/5.0000896

Cited by 5 publications

(3 citation statements)

References 33 publications

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“…It is clearly observed from the SEM images that, all the nanocomposites display agglomerations of small spherical particles with regular sizes, which are uniformly mixed with long tubular or cylinder‐shaped particles. The presence of these tubes proves the existence of MWCNT [36] . The elemental composition of the nanocomposites is confirmed from the illustrated EDX spectra as shown in (Figure 44b,d,f).…”

Section: Resultssupporting

confidence: 57%

Palladium‐Modified TiO₂/MWCNTs for Efficient Carbon Capture and Photocatalytic Reduction of Nitro‐aromatic Derivatives

et al. 2023

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In this study, modified TiO2 nanocomposites with the noble metal (Ag or Pd) followed by dispersion on multiwall carbon nanotubes (MWCNT) were synthesized and applied in the photocatalytic oxidation of CO at room temperature in the absence of oxygen. The results revealed that the highest active photocatalyst was Pd/TiO2/MWCNT towards CO and p‐nitrophenol (PNP) conversion. The reaction was dependent on the catalyst loading, concentration of tert‐butyl ammonium bromide (TBAB) as co‐catalyst and the reaction time as well as the temperature of their reduction. It was found that the optimal condition for PNP transformed into p‐aminophenol (PAP) and formic acid (HCOOH) was the use of 0.05 wt % of Pd/TiO2/MWCNT nanocatalyst, 2 mol % of TBAB under visible light irradiation condition at room temperature after 1 hour. The as‐prepared photocatalysts were fully characterized using Scanning electron microscope (SEM‐EDX), high resolution transmission electron microscope (HR‐TEM), X‐ray diffraction (XRD) and Brunauer‐Emmett‐Teller (BET). In addition, the band gaps of TiO2 nanoparticles, TiO2/MWCNT and Ag‐ or Pd‐modified TiO2/MWCNT nanocomposites were calculated from diffuse reflectance spectroscopic (DRS) analysis, ensuring the best photocatalytic efficiency. This approach is significantly beneficial for development of new generation of detoxification/transformation catalysts. The probable mechanism of photo‐oxidation of CO by H2O was postulated.

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Section: Resultssupporting

confidence: 57%

Palladium‐Modified TiO₂/MWCNTs for Efficient Carbon Capture and Photocatalytic Reduction of Nitro‐aromatic Derivatives

et al. 2023

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“…All samples show superparamagnetic features as indicated by the obtained S curve. The attained hysteresis curve was then analyzed using the Langevin method with susceptibility, 40 and the results are summarized in Table 2 . The remanent magnetization and coercivity field are close to 0, characterizing the superparamagnetic components.…”

Section: Resultsmentioning

confidence: 99%

Exploring the role of Mn²⁺ in the structure, magnetic properties, and radar absorption performance of Mn_xFe_3−xO₄–DEA/MWCNT nanocomposites

Agista,

Subadra,

Taufiq

et al. 2023

RSC Adv.

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“…The hysteresis curves shown in figure 4 were obtained after analysis using the Langevin equation with susceptibility (χ) [53]. The coercivity and remanent magnetisation field values of all samples were close to zero, indicating that the nanocomposites samples were superparamagnetic.…”

Section: Resultsmentioning

confidence: 99%

Synthesis and characterisation of Fe₃O₄/MWCNT/ZnO nanocomposites covered by a soft template as a new antibacterial agent

Subadra¹,

Taufiq²,

Sunaryono³

et al. 2022

Adv. Nat. Sci: Nanosci. Nanotechnol.

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This study successfully developed a new antibacterial agent based on Fe3O4/MWCNT/ZnO nanocomposites prepared using diethylamine as a soft template. The prepared samples were characterised using x-ray diffraction, Fourier transform infrared spectroscopy, scanning electron microscopy, energy-dispersive x-ray spectroscopy, vibrating sample magnetometry, ultraviolet-visible spectroscopy, and antibacterial tests by the diffusion method. The results of the data analysis showed that Fe3O4/MWCNT/ZnO nanocomposites were composed of Fe3O4, MWCNT, ZnO with inverse cubic spinel, hexagonal, and hexagonal wurtzite structures, respectively. The nanocomposite particles tended to agglomerate and their size decreased with increasing volume of added diethylamine in the range of ∼23–26 nm. The nanocomposites remain stable even after being stored for more than 3 years. The nanocomposites had superparamagnetic properties with saturation magnetisation values of 24 to 31 emu g−1 and band gap values of 2.96 to 2.99 eV. The diameters of the bacterial inhibition zone of the nanocomposites were 12.57–20.38 mm, 14.25–17.25 mm, and 14.63–16.38 mm against E. coli, S. aureus, and B. subtilis, respectively. Therefore, the combination of Fe3O4, MWCNT, ZnO, and diethylamine with natural base materials such as iron sand has good potential to develop new antibacterial agents.

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Preparation of Fe3O4/MWCNT nanocomposite combined with titanium dioxide using sonochemical and precipitation methods

Cited by 5 publications

References 33 publications

Palladium‐Modified TiO₂/MWCNTs for Efficient Carbon Capture and Photocatalytic Reduction of Nitro‐aromatic Derivatives

Palladium‐Modified TiO₂/MWCNTs for Efficient Carbon Capture and Photocatalytic Reduction of Nitro‐aromatic Derivatives

Exploring the role of Mn²⁺ in the structure, magnetic properties, and radar absorption performance of Mn_xFe_3−xO₄–DEA/MWCNT nanocomposites

Synthesis and characterisation of Fe₃O₄/MWCNT/ZnO nanocomposites covered by a soft template as a new antibacterial agent

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Preparation of Fe3O4/MWCNT nanocomposite combined with titanium dioxide using sonochemical and precipitation methods

Cited by 5 publications

References 33 publications

Palladium‐Modified TiO2/MWCNTs for Efficient Carbon Capture and Photocatalytic Reduction of Nitro‐aromatic Derivatives

Palladium‐Modified TiO2/MWCNTs for Efficient Carbon Capture and Photocatalytic Reduction of Nitro‐aromatic Derivatives

Exploring the role of Mn2+ in the structure, magnetic properties, and radar absorption performance of MnxFe3−xO4–DEA/MWCNT nanocomposites

Synthesis and characterisation of Fe3O4/MWCNT/ZnO nanocomposites covered by a soft template as a new antibacterial agent

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Palladium‐Modified TiO₂/MWCNTs for Efficient Carbon Capture and Photocatalytic Reduction of Nitro‐aromatic Derivatives

Palladium‐Modified TiO₂/MWCNTs for Efficient Carbon Capture and Photocatalytic Reduction of Nitro‐aromatic Derivatives

Exploring the role of Mn²⁺ in the structure, magnetic properties, and radar absorption performance of Mn_xFe_3−xO₄–DEA/MWCNT nanocomposites

Synthesis and characterisation of Fe₃O₄/MWCNT/ZnO nanocomposites covered by a soft template as a new antibacterial agent