Magnetically retrievable nanocomposite adorned with Pd nanocatalysts: efficient reduction of nitroaromatics in aqueous media

Shokouhimehr, Mohammadreza; Hong, Kootak; Lee, Tae Hyung; Moon, Cheon Woo; Hong, Seung Pyo; Zhang, Kaiqiang; Suh, Jun Min; Choi, Kyoung Soon; Varma, Rajender S.; Jang, Ho Won

doi:10.1039/c8gc01240g

Cited by 151 publications

(67 citation statements)

References 69 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Catalysts 2019, 9, x FOR PEER REVIEW 2 of 10 recovered by magnetic force and reused six times. Other examples including magnetic-Pd catalysts for reducing of nitrobenzene water [15] as well as cobalt platform-Pt for hydrogenation reaction [16] were explored afterwards. Despite convenience in separation, MNPs often agglomerate into big clusters leading to a decrease in catalytic activities.…”

Section: Characterization Of Au-sio 2 @Fe 3 O 4 -Rgomentioning

confidence: 99%

Synthesis of a Novel Magnetically Retrievable Nanocomposite with Au Nanocatalysts for Hydration Reaction

Dai

et al. 2019

Catalysts

View full text Add to dashboard Cite

Developing efficient catalysts with good recyclability is of great importance for its practical applications. In this study, a novel magnetically retrievable nanocomposite (Au-SiO2@Fe3O4-RGO) was synthesized for catalyzing hydration reaction. Active Au nanoparticles are deposited on core-shell SiO2@Fe3O4, which are further supported by a two-dimensional reduced graphene oxide (RGO) platform. The prepared Au-SiO2@Fe3O4-RGO was proven to be efficient as well as recyclable. An excellent catalytic performance, with 97% yield towards the hydration of phenylacetylene, was achieved for the catalyst in dioxane. Remarkably, the catalyst can be readily recycled through magnetic separation and achieved superior catalyst recovery and stability after seven cycles without any metal leaching. This work provides a strategy to fabricate recyclable and durable catalysts for industrial applications.

show abstract

Section: Characterization Of Au-sio 2 @Fe 3 O 4 -Rgomentioning

confidence: 99%

Synthesis of a Novel Magnetically Retrievable Nanocomposite with Au Nanocatalysts for Hydration Reaction

Dai

et al. 2019

Catalysts

View full text Add to dashboard Cite

show abstract

“…Moreover, using large amounts of metal as a catalyst leads to heavy‐metal contamination and very low TON values . Hence, an alternative, cost‐effective, high‐activity, high‐stability, and more environmentally friendly reduction of nitroarenes with negligible metal contamination is of high demand …”

Section: Introductionmentioning

confidence: 99%

Ultra‐low‐loading palladium nanoparticles stabilized on nanocrystalline Polyaniline (Pd@PANI): A efficient, green, and recyclable catalyst for the reduction of nitroarenes

Wang

Yuan

et al. 2019

Applied Organom Chemis

View full text Add to dashboard Cite

Ultra-low-loading Pd@PANI nanocomposites (0.048 w.t% Pd) were synthesized via a method that combined interfacial polymerization and in situ composite with camphor sulfonic acid ((+)-CSA) as a dopant. Transmission electron microscopy (TEM), X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectra, and X-ray photoelectron spectroscopy (XPS) were performed to characterize the structures. It can be used as an efficient catalyst for the reduction of nitroarenes in aqueous solution by using a smaller amount of NaBH 4 (2.5 equiv.) at room temperature with high activity (TON = 3.4 × 10 3 ), good stability (cycled eight times), as well as wide applicability (27 substrates). The catalyst also showed a marvelous activity in the gram-level reaction (yield = 92%). UV-Visible spectrophotometry was used to investigate the reaction kinetics for the reduction of 4-nitrophenol to 4-aminophenol, and the results reconfirmed the excellent performance of the catalyst. The unique properties and superior performance of the prepared ultra-low-loading Pd@PANI nanocomposites lead it be an attractive alternative catalyst for conventional organic catalytic applications. KEYWORDScatalytic performance, palladium nanoparticle, polyaniline, reduction of nitroarenes in water, reused for multiple cycles

show abstract

“…The Co and Fe‐based catalyst can be easily separated from reaction system by external magnet . There are some reports about the modification of Fe 3 O 4 spheres by Au or Ag for effective catalysis in company of easy separation . However, the synthesis is relative complex in accompany with the use of noble metals.…”

Section: Introductionmentioning

confidence: 99%

Cluster‐like Co₄N embedded into carbon sphere as an efficient, magnetic‐separated catalyst for catalytic hydrogenation

Yin

et al. 2019

ChemistrySelect

View full text Add to dashboard Cite

The transition metal nitrides are promising catalyst in catalytic fields. The decrease of particle size is favourable to improve the catalytic ability, but its synthesis remains a challenge due to high calcination temperature in the synthesis. Here, we have reported the designed synthesis of cluster-like Co 4 N paticles (NPs) uniformly embedded in N-doped carbon microsphere (Co 4 N@NC) by controllable nitridation of a spherical Co-HQÀ S composed of Co 2 + and 8-hydroxy quinoline (8-HQ), and its used as efficient hydrogenation catalyst. The Co 4 N have less size about 3 nm benefited the confined effect of carbon matrix. The small size is favorable to develop the catalytic ability of Co 4 N and a protection by carbon can enhance its stability. The test indicated that Co 4 N/NC can act effective catalysts for the hydrogenation by taking the conversion of 4-nitrophenol (4-NP) to 4-aminophenol (4-AP) as model. The rate constant of 4-NP conversion is 1.14 min À 1 at 25°C (5 mg of catalyst), much higher than many non-noble metal catalyst and even comparable to noble metal catalysts. The Co 4 N/NC can be easily separated by a external magnet with good reuse performance. Importantly, the catalytic ability can be further enhanced by slight increase of the dose of catalyst, and/or reaction temperature. The combination of magnetic property and good catalytic ability makes the Co 4 N/NC large promising in catalytic fields.

show abstract

Magnetically retrievable nanocomposite adorned with Pd nanocatalysts: efficient reduction of nitroaromatics in aqueous media

Abstract: Herein, we describe the fabrication of a magnetically retrievable nanocomposite adorned with highly active Pd nanoparticles (NPs) (MRN-Pd), which is useful for the efficient reduction of nitroaromatics in aqueous solution.

Cited by 151 publications

References 69 publications

Synthesis of a Novel Magnetically Retrievable Nanocomposite with Au Nanocatalysts for Hydration Reaction

Synthesis of a Novel Magnetically Retrievable Nanocomposite with Au Nanocatalysts for Hydration Reaction

Ultra‐low‐loading palladium nanoparticles stabilized on nanocrystalline Polyaniline (Pd@PANI): A efficient, green, and recyclable catalyst for the reduction of nitroarenes

Cluster‐like Co₄N embedded into carbon sphere as an efficient, magnetic‐separated catalyst for catalytic hydrogenation

Contact Info

Product

Resources

About

Magnetically retrievable nanocomposite adorned with Pd nanocatalysts: efficient reduction of nitroaromatics in aqueous media

Abstract: Herein, we describe the fabrication of a magnetically retrievable nanocomposite adorned with highly active Pd nanoparticles (NPs) (MRN-Pd), which is useful for the efficient reduction of nitroaromatics in aqueous solution.

Cited by 151 publications

References 69 publications

Synthesis of a Novel Magnetically Retrievable Nanocomposite with Au Nanocatalysts for Hydration Reaction

Synthesis of a Novel Magnetically Retrievable Nanocomposite with Au Nanocatalysts for Hydration Reaction

Ultra‐low‐loading palladium nanoparticles stabilized on nanocrystalline Polyaniline (Pd@PANI): A efficient, green, and recyclable catalyst for the reduction of nitroarenes

Cluster‐like Co4N embedded into carbon sphere as an efficient, magnetic‐separated catalyst for catalytic hydrogenation

Contact Info

Product

Resources

About

Cluster‐like Co₄N embedded into carbon sphere as an efficient, magnetic‐separated catalyst for catalytic hydrogenation