Catalytic activity of Ni complexed aminoclay towards the reduction of Cr(V), p-nitrophenol and fluorescein dye

Ranchani, A. Amala Jeya; Parthasarathy, V.; Devi, A. Anitha; Meenarathi, B.; Anbarasan, R.

doi:10.1007/s13204-017-0609-4

Cited by 8 publications

(10 citation statements)

References 29 publications

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“…The second minor weight loss at 516 • C is corresponding to the breaking of complex between the amino group of AC and Ca nanoparticles. The third major weight losses occur at 430 • C for pristine AC (degradation of propyl amino group of AC) 19 and at 713 • C for the AC-Ca system (degradation of the propyl amino group of AC and breaking of linkage between Mg and Si), respectively. The percentage weight residue remained around 800 • C is due to the Ca nanoparticles for the AC-Ca system.…”

Section: Thermal Studymentioning

confidence: 99%

“…The HRTEM image of the AC-Ca system is shown in Figure 5B. Here the layer-by-layer arrangement 19 is disturbed to some extent, and Ca nanoparticles are distributed on the AC. The size of the Ca nanoparticles is determined as 6-8 nm.…”

Section: Fesem Analysismentioning

confidence: 99%

“…The WCA of AC before and after the structural modification was measured. The pristine AC showed the WCA of 15.6 o ( Figure 6A), 19 whereas the structurally modified AC showed the WCA of 72.9 o ( Figure 6B). This indicates that after the structural modification process the hydrophobicity of AC is increased.…”

Section: Wca Measurementmentioning

confidence: 99%

“…This can be outwitted by selecting a suitable catalyst and designing the experimental conditions. In 2017, Amala and co-workers 19 used Ni-complexed AC as a catalyst for the synthesis of poly(caprolactone) (PCL) Schiff base. In 2018, Agathian and research team 20 reported the cotton fiber based Schiff base using V 2 O 5 nanoparticles as an effective catalyst.…”

Section: Introductionmentioning

confidence: 99%

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Synthesis, characterization, and catalytic application of ecofriendly Ca‐bridged aminoclay

Samy

Parthasarathy

Mahalakshmi³

et al. 2019

Int J of Chemical Kinetics

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A novel ecofriendly Ca nanoparticle bridged aminoclay (AC) catalyst was prepared for the reduction of hazardous pollutants to treat the industrial wastewater. It was characterized by FT‐IR spectroscopy, UV‐visible spectroscopy, X‐ray diffraction (XRD), X‐ray photoelectron spectroscopy (XPS), high resolution transmission electron microscopy (HRTEM), field emission scanning electron microscopy (FESEM), energy dispersive X‐ray spectrum (EDX), differential scanning calorimetry (DSC), and thermogravimetry (TG) techniques. Water contact angle (WCA) measurement was used to confirm the hydrophobicity of AC after the structural modification reaction. Disappearance of free N−H stretching in the FT‐IR spectrum confirmed the chemical modification of AC by Ca nanoparticle. The above‐synthesized Ca nanoparticle bridged AC was used as a catalyst for the reduction of p‐nitrophenol (NP), chromium (VI) and fluorescein (fluor) dye and also for oxidative Schiff base formation. The UV‐visible spectrum confirmed the complex formation between chromium (VI) and NP by noting a peak at 390 nm. The kapp value was computed to assess the efficiency of the catalyst toward the reduction of hazardous pollutants in the industrial effluents. The catalytic reduction of a tricomponent system is disturbed due to the change in pH and complex formation between the pollutants, etc. The present catalyst system reduced the two‐step reaction into a single‐step reaction for the Schiff base formation.

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Section: Thermal Studymentioning

confidence: 99%

Section: Fesem Analysismentioning

confidence: 99%

Section: Wca Measurementmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Synthesis, characterization, and catalytic application of ecofriendly Ca‐bridged aminoclay

Samy

Parthasarathy

Mahalakshmi³

et al. 2019

Int J of Chemical Kinetics

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“…used gold–palladium bimetallics for the reduction of NiP. Other catalysts, including MoS 2 , silver, gold and copper, cobalt, bismuth–Fe 3 O 4 , Zn(OH) 2 , and nickel‐complexed aminoclay, have been used for the reduction of NiP. Unfortunately, it was found that the apparent rate constant ( k app ) value decreased because of the decrease in the concentration of the catalyst; that is, during the reduction reaction some amount of catalyst diffused or leached into the reaction medium.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, spectral analysis, and catalytic activity of poly(aniline‐co‐congored)–metal oxide nanocomposites

Ponprapakaran¹,

Subramani²,

Baskaran³

et al. 2018

J of Applied Polymer Sci

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Electrically conducting, water‐soluble fluorescent copolymer nanocomposites were synthesized by a solution polymerization method under different experimental conditions in the presence of CuO and V2O5 nanoparticles. The prepared copolymer nanocomposites were characterized with analytical tools, including Fourier transform infrared spectroscopy, ultraviolet–visible (UV–vis) spectroscopy, and fluorescence emission spectroscopy. The order of copolymerization was determined on the basis of the UV–vis absorption spectra and fluorescence emission spectra. The copolymer–CuO nanocomposite system exhibited the highest electrical conductivity. The scanning electron microscopy image showed the presence of more CuO nanoparticles on the surface of the copolymer. Furthermore, the catalytic activity of the copolymer nanocomposites was tested for the reduction of p‐nitrophenol. All three types of polymer systems exhibited almost the same apparent rate constant values. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46469.

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Ag‐based bimetallic clusters as catalysts for p‐nitrophenol reduction by glycerol: A DFT investigation

Khandelwal,

Khan,

Kuntail

et al. 2023

Int J of Quantum Chemistry

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Reducing p‐nitrophenol (PNP) to p‐aminophenol is an industrially relevant synthesis. Nevertheless, only a few heterogeneous catalysts have been evaluated for the reduction of PNP by glycerol. Appropriate quantum computational studies can screen potential catalysts for this crucial green reaction. The present research investigates the catalytic activities of Pd@Ag and Ni@Ag core‐shell nanogeometries toward PNP reduction by glycerol through density functional theory (DFT) calculations. The central atom of a geometry‐optimized 13‐atom Ag cluster was replaced by Pd and Ni atoms to create the core‐shell morphologies. The interaction energies of PNP and glycerol with each of the (metal/bimetallic) clusters were evaluated by DFT calculations to find the best PNP and glycerol molecule orientation with the respective bimetallic cluster. Electrostatic potential surface and natural bond orbital analyses were performed to study the charge distribution and transfer between atomic orbitals. The frequencies of vibrational modes in isolated PNP/glycerol structures were compared to those when these molecules were in the presence of the different metal clusters to infer the effect of the interactions. All performed analyses indicated improved catalytic activity toward PNP reduction by glycerol upon Ni‐doping of the Ag13 cluster.

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Catalytic activity of Ni complexed aminoclay towards the reduction of Cr(V), p-nitrophenol and fluorescein dye

Cited by 8 publications

References 29 publications

Synthesis, characterization, and catalytic application of ecofriendly Ca‐bridged aminoclay

Synthesis, characterization, and catalytic application of ecofriendly Ca‐bridged aminoclay

Synthesis, spectral analysis, and catalytic activity of poly(aniline‐co‐congored)–metal oxide nanocomposites

Ag‐based bimetallic clusters as catalysts for p‐nitrophenol reduction by glycerol: A DFT investigation

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