Magnetically separable core-shell nanoparticles for simultaneous metal adsorption and dye degradation

Khan, Shanza; Nisa, Waqar-Un; Khan, Shahid Ali; Mansoor, Muhammad Adil; Haider, Sajjad; Khan, Salah Uddin; Ouyang, Xinhua; Iqbal, Mudassir

doi:10.1016/j.optmat.2024.115017

Optical Materials

2024

DOI: 10.1016/j.optmat.2024.115017

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Magnetically separable core-shell nanoparticles for simultaneous metal adsorption and dye degradation

Shanza Khan,

Waqar-Un Nisa,

Shahid Ali Khan

et al.

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2024

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Cited by 2 publications

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“…They are known to have catalytic properties in various energy conversion 12 and environmental remediation processes. [13][14][15] Semiconductor metal oxides like TiO 2 , SiO 2 , and ZnO have utility in electronic and photovoltaic devices. 16,17 Along with these, metal oxides also have excellent mechanical strength, thermal stability, and resistance to corrosion and abrasion.…”

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Single Source Precursor Synthesis of Lead Titanate (PbTiO₃) for the Electrochemical Detection of Nitric Oxide (NO)

Zaka,

Liaqat,

Mehmood

et al. 2024

J. Electrochem. Soc.

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Electrochemical detection of Nitric oxide (NO) has attracted considerable attention due to its central role in different processes of mammalian physiology. In this study, NO is electrochemically detected using lead titanate (PbTiO3) as an electrochemical sensor. The lead titanate (PbTiO3) was prepared successfully through thermal decomposition of bimetallic complex [PbTi(O2CCF3)4(THF)3O]2 containing both lead and titanium metals. A phase of synthesized PbTiO3 powder was studied using X-ray diffraction spectroscopy and Raman spectroscopy, while the morphology and crystallite size were studied by field emission scanning electron microscopy and high-resolution transmission electron microscopy. Further, X-ray photoelectron spectroscopy analysis was also done to determine the elemental composition along with their oxidation states. Finally, the PbTiO3 powder was coated on GCE (glassy carbon electrode) and then further studied electrochemically for sensing NO in NaNO2 solution at pH = 2.5. Moreover, the detection capability of PbTiO3 was analyzed upon adding different concentrations of 1 to 10 mM of NaNO2. As a result, current and concentration followed a linear response. For the interferent studies, uric acid, glucose, dopamine, and ascorbic acid were used as interferents. It was noted that no signals appeared with these interferents in the voltammogram.

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Single Source Precursor Synthesis of Lead Titanate (PbTiO₃) for the Electrochemical Detection of Nitric Oxide (NO)

Zaka,

Liaqat,

Mehmood

et al. 2024

J. Electrochem. Soc.

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Highly active iron oxide@N catalyst derived from the iron acetate/polyacrylonitrile threads: Driving nitroarene conversion to value‐added amines

Rubab,

Sharif,

Razzaq

et al. 2024

J of Applied Polymer Sci

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Chemoselective reduction of nitroarenes to corresponding arylamines is a significant reaction in the chemical industry. However, in the presence of other reducible groups, including halogenated nitrobenzene, nitrobiphenyl, and nitroquinoline in the same molecule of nitroaromatics, the control of chemoselectivity remains challenging. Here, a facile fabrication of a heterogeneous iron‐based catalyst is reported as a potential alternative to precious metal catalysts for the chemoselective reduction of nitroarenes. The pyrolysis of iron acetate/polyacrylonitrile (PAN) template under an inert atmosphere furnishes active Fe3O4 nanoparticles (NPs) encapsulated in nitrogen‐doped (N‐doped) carbon layers, which can provide more catalytic active sites (Fe3O4/PAN@800). Notably, non‐precious iron oxide NPs supported on N‐doped carbon support prevent aggregation, thereby enhancing the catalytic activity. The sustainable and reusable Fe3O4/PAN@800 catalyst, having only 0.8% metal content as demonstrated by x‐ray photoelectron spectroscopy, delivers excellent yields of corresponding amines from differently functionalized nitroarenes. Hydrogenation of a series of structurally functionalized nitroarenes produced excellent yields of anilines, which serve as building blocks and intermediates for fine and bulk chemicals. Hydrogenation of 2‐chloro‐3‐nitropyridine, 2‐nitro‐1,1′‐biphenyl, ortho‐nitroaniline, and 4‐aminophenyl acrylonitrile yielded respective anilines up to 99%. The active sites of Fe3O4 have magnetic performance, hence, the catalyst can be easily recovered using a magnet and reused for at least five cycles without significant loss of catalytic activity. Therefore, the easily prepared, cost‐effective, and reusable Fe3O4/PAN@800 catalyst presented in this study shows potential for applications in the selective reduction of aromatic nitro compounds. Consequently, this study potentially establishes a guideline for the facile preparation of abundant transition‐non‐noble metal‐based reusable supported catalysts for various applications in the chemical industry.

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Magnetically separable core-shell nanoparticles for simultaneous metal adsorption and dye degradation

Cited by 2 publications

References 42 publications

Single Source Precursor Synthesis of Lead Titanate (PbTiO₃) for the Electrochemical Detection of Nitric Oxide (NO)

Single Source Precursor Synthesis of Lead Titanate (PbTiO₃) for the Electrochemical Detection of Nitric Oxide (NO)

Highly active iron oxide@N catalyst derived from the iron acetate/polyacrylonitrile threads: Driving nitroarene conversion to value‐added amines

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Magnetically separable core-shell nanoparticles for simultaneous metal adsorption and dye degradation

Cited by 2 publications

References 42 publications

Single Source Precursor Synthesis of Lead Titanate (PbTiO3) for the Electrochemical Detection of Nitric Oxide (NO)

Single Source Precursor Synthesis of Lead Titanate (PbTiO3) for the Electrochemical Detection of Nitric Oxide (NO)

Highly active iron oxide@N catalyst derived from the iron acetate/polyacrylonitrile threads: Driving nitroarene conversion to value‐added amines

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Product

Resources

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Single Source Precursor Synthesis of Lead Titanate (PbTiO₃) for the Electrochemical Detection of Nitric Oxide (NO)

Single Source Precursor Synthesis of Lead Titanate (PbTiO₃) for the Electrochemical Detection of Nitric Oxide (NO)