Nickel hydroxide nanoparticles decorated napthalene sulfonic acid-doped polyaniline nanotubes as efficient catalysts for nitroarene reduction

Sypu, Venkata Satyanarayana; Bhaumik, Madhumita; Raju, Kumar; Maity, Arjun

doi:10.1016/j.jcis.2020.08.111

Cited by 25 publications

(9 citation statements)

References 65 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As indicated by the regression coefficient (R 2 = 0.9829), the reduction data fitted very well to the pseudo-first-order model (Figure S1). This observation agreed well with earlier studies, which examined the reduction of nitroarenes under the influence of various catalysts [36,37]. The rate constant was determined as 0.1479 min −1 , indicating a kinetically unhindered process with no induction period, in contrast to some earlier studies that showed that Pd catalysts have an initial stage of reduced performance during the reduction in nitro compounds [38][39][40].…”

Section: Catalytic Activity Testsupporting

confidence: 91%

Preparation and Application of a Hydrochar-Based Palladium Nanocatalyst for the Reduction of Nitroarenes

et al. 2021

View full text Add to dashboard Cite

In the present study, a novel heterogeneous catalyst was successfully fabricated through the decoration of palladium nanoparticles on the surface of designed Fe3O4-coffee waste composite (Pd-Fe3O4-CWH) for the catalytic reduction of nitroarenes. Various characterization techniques such as XRD, FE-SEM and EDS were used to establish its nano-sized chemical structure. It was determined that Pd-Fe3O4-CWH is a useful nanocatalyst, which can efficiently reduce various nitroarenes, including 4-nitrobenzoic acid (4-NBA), 4-nitroaniline (4-NA), 4-nitro-o-phenylenediamine (4-NPD), 2-nitroaniline (2-NA) and 3-nitroanisole (3-NAS), using NaBH4 in aqueous media and ambient conditions. Catalytic reactions were monitored with the help of high-performance liquid chromatography. Additionally, Pd-Fe3O4-CWH was proved to be a reusable catalyst by maintaining its catalytic activity through six successive runs. Moreover, the nanocatalyst displayed a superior catalytic performance compared to other catalysts by providing a shorter reaction time to complete the reduction in nitroarenes.

show abstract

Section: Catalytic Activity Testsupporting

confidence: 91%

Preparation and Application of a Hydrochar-Based Palladium Nanocatalyst for the Reduction of Nitroarenes

et al. 2021

View full text Add to dashboard Cite

show abstract

“…Nitroaromatic compounds are among the specific anthropogenic contaminants . Due to high stability and water solubility, the elimination of this class of compounds has always been a significant issue. , Selective nitroarene reduction to amines is one of the most important and most employed catalytic reactions in organic synthesis and industrial chemistry. , Functional aromatic amines are raw materials and significant intermediates in the chemical manufacturing of dyes, pigments, herbicides, agrochemicals, cosmetics, and other chemicals. − One of the most commonly utilized model reactions to assess the efficiency of a metal-based catalyst is the reduction of 4-nitrophenol to 4-aminophenol in an aqueous medium . The highest yield in this reaction is obtained in the presence of catalysts based on noble metals, e.g., Au, Ag, Pd, and Pt …”

Section: Introductionmentioning

confidence: 99%

Sustainable Coordination Polymer-Based Catalyst and Its Application in the Nitroaromatic Hydrogenation under Mild Conditions

Aghajani

Mohammadikish

2022

Langmuir

View full text Add to dashboard Cite

Nitroarene reduction has played a crucial role in the environment remediation and public health. However, few research studies have been undertaken regarding the use of infinite coordination polymer-based catalysts in this process. Herein, we are looking for a way to catalyze the reduction of nitroarenes using a new and well-designed coordination polymer-based palladium catalyst. The Co-BDC-NH 2 coordination polymer was prepared through a co-precipitation reaction between 2-amino-1,4-benzenedicarboxylic acid as a linker and the cobalt cation as a node. Functionalization of the prepared Co-BDC-NH 2 with 2-pyridinecarboxaldehyde and subsequent metallation with a Pd cation led to the formation of the final catalyst, i.e., Co-BDC-NH 2 -py-Pd. It has been specified that palladium species substantially contribute to the reduction of nitroarenes in the presence of hydrazine hydrate (N 2 H 4 •H 2 O). The highest conversion (100%) of nitroarenes to the corresponding amines was achieved under relatively mild conditions. This heterogeneous catalyst was able to catalyze the reduction of nitroarenes to desired products without changing other substituents. The reusability and stability of the catalyst were confirmed through four consecutive reduction tests without a major decrease in catalytic activity.

show abstract

“…When a piece of MS-PDA-Ag was added, the BH 4 – ions and 4-NP attached on the surface of the MS-PDA-Ag by electrostatic attraction. The Ag NPs anchored on the MS served as active catalysts for electron migration from the BH 4 – to the nitro group, then, 4-NP was reduced to 4-AP . Finally, 4-AP desorbed from the surface of the MS-PDA-Ag and began the next round of catalytic reaction (Figure ).…”

Section: Resultsmentioning

confidence: 99%

“…The rate constants (k app ) of the first, second, third, and fourth cycles were calculated (Figure S4e) to be 0.02462, 0.01088, 0.00956, and 0.00787 s −1 , − to the nitro group, then, 4-NP was reduced to 4-AP. 58 Finally, 4-AP desorbed from the surface of the MS-PDA-Ag and began the next round of catalytic reaction (Figure 5). Moreover, the prominent catalytic activity is primarily ascribed to the large surface area of the Ag NPs anchored on the skeleton of the MS.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Mussel-Inspired Ag NPs Immobilized on Melamine Sponge for Reduction of 4-Nitrophenol, Antibacterial Applications and Its Superhydrophobic Derivative for Oil–Water Separation

Chen

Liu

Zhang

et al. 2021

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

A functional material integrated with a variety of functions is highly desired in wastewater treatment. In this research, a mussel-inspired method of immobilizing silver nanoparticles on the skeleton of a melamine sponge is proposed and applied for water remediation. Ag NPs were reduced in situ and grown on a polydopamine-modified melamine sponge. The catalytic reduction of 4-nitrophenol (4-NP) in the presence of the obtained MS-PDA-Ag was evaluated, and the results demonstrated that the MS-PDA-Ag presented high catalytic reduction activity. In addition, the monolithic MS-PDA-Ag presents excellent reusability with no remarkable decrease in catalytic efficiency after multiple reuses. Owing to the immobilized Ag NPs, the MS-PDA-Ag can also effectively inhibit the growth of bacteria against both gram-positive and gram-negative species, making it possible for bacteria elimination in polluted water. To further explore the possibility of utilizing the MS-PDA-Ag for versatile applications, a superhydrophobic derivative (S-MS-PDA-Ag) was prepared by coating a low-surface-energy substance (octadecanethiol) on the surface of MS-PDA-Ag. The obtained S-MS-PDA-Ag presents the capacities of oil/organics adsorption and water repellence, which can separate the insoluble oil/organics from water. The melamine sponge immobilized with Ag NPs demonstrates prominent catalytic reduction of 4-NP, antibacterial activity and the superhydrophobic derivative presents the capacity of insoluble oil/organics separation from oil–water mixtures, exhibiting high potential in the remediation of polluted water.

show abstract

Nickel hydroxide nanoparticles decorated napthalene sulfonic acid-doped polyaniline nanotubes as efficient catalysts for nitroarene reduction

Cited by 25 publications

References 65 publications

Preparation and Application of a Hydrochar-Based Palladium Nanocatalyst for the Reduction of Nitroarenes

Preparation and Application of a Hydrochar-Based Palladium Nanocatalyst for the Reduction of Nitroarenes

Sustainable Coordination Polymer-Based Catalyst and Its Application in the Nitroaromatic Hydrogenation under Mild Conditions

Mussel-Inspired Ag NPs Immobilized on Melamine Sponge for Reduction of 4-Nitrophenol, Antibacterial Applications and Its Superhydrophobic Derivative for Oil–Water Separation

Contact Info

Product

Resources

About