Ruthenium Ion Research Articles

Effective removal of ruthenium(III) ions from wastewater by xanthate-modified cross-linked chitosan

Xanthate-modified cross-linked chitosan (chitosan-SH) was synthesized by hydrothermal method. The adsorption mechanism and capacity of removing ruthenium [Ru(Ⅲ)] from aqueous solutions with chitosan-SH as an adsorbent was investigated. The characterization results indicated that carbon disulfide (CS2) was successfully loaded into cross-linked chitosan. Structural characterization of the samples was performed by Fourier transform infrared (FTIR), X-ray photoelectron spectrometer (XPS), scanning electron microscope (SEM), specific surface area and porosity analysis (BET) analysis methods. The results of kinetics data suggested that the ruthenium ion adsorption process by chitosan-SH could be fast to reach equilibrium within 30 min. Additionally, the removal percentage of uranium was obtained 94.7% at pH 7.0. Several parameters affecting adsorption capacity, including pH, contact time, initial Ru(Ⅲ) concentration and solution volume, and adsorbent concentration, were also investigated. Overall, chitosan-SH could be applied as a superior adsorbent for Ru(Ⅲ) in wastewater.

On the Stark broadening of Ru III spectral lines

Stark broadening parameters, full widths at half maximum (FWHM) and shifts for spectral lines within six multiplets of doubly charged ruthenium ions have been calculated, for an electron density of 10 17 cm-3 and temperature range from 10 000 K to 160 000 K. Calculations have been performed with the simplified modified semiempirical (SMSE) approach. In the case of two multiplets, it is possible to apply the full modified semiempirical method. The corresponding calculations have been performed and results are compared in order to test and determine the accuracy of the SMSE approach. The results are also used for the consideration of Stark width and shift regularities in Ru III spectrum

Graphene oxide-derived carbonaceous sensor: turn-off fluorescence sensor for nanomolar detection of ruthenium ions in aqueous medium

A novel covalently modified graphene oxide has been synthesised and demonstrated as a carbonaceous chemosensor for the selective detection of Ru(iii) in complete water medium.

IRMPD spectroscopy and quantum chemistry calculations on mono- and bi-metallic complexes of acetylacetonate ligands with aluminum, iron, and ruthenium ions.

Metal-ligand cluster ions are structurally characterized by means of gas-phase infrared multiple photon dissociation spectroscopy. The mass-selected complexes consist of one or two metal cations M3+ (M = Al, Fe, or Ru) and two to five anionic bidentate acetylacetonate ligands. Experimental IR spectra are compared with different density functional theory calculations, namely, PBE/TZVP, B3LYP/6-31G*, and M06/6-31+G**. Frequency analysis was also performed at different levels, namely, scaled static harmonic and unscaled static anharmonic, or with ab initio molecular dynamics simulations at the PBE/TZVP level. All methods lead to simulated spectra that fit rather well with experimental data, and the spectral red shifts of several main bands, in the 1200 cm-1-1800 cm-1 range, are sensitive to the strength of the metal-ligand interaction and to the spin state of the ion. Due to the rigidity of those complexes, first principles molecular dynamics calculations provide spectra similar to that produced by static calculations that are already able to catch the main spectral signatures using harmonic calculations at the B3LYP/6-31G* level.

Morphological and magnetic features of Ru(III) doped magnetite ultrafine nanoparticles

Magnetite nanoparticles constitute a class of nanoparticles which is easily manipulated using a magnetic field. Magnetite nanoparticles doped with ruthenium (Ru) ions [RuxFe(3−x)O4] were synthesized via co-precipitation method where 0.0 ≤ x ≤ 0.5 with step 0.1. The obtained nanopowder was investigated via x-ray diffraction, FTIR, FESEM. It was shown that Ru ions were incorporated successfully into a magnetite structure with a slight influence on the value of the lattice parameter which increased from 8.354 Å at x = 0.0 to be 8.403 Å at x = 0.3, while crystallite size deteriorated from 20.1 nm at x = 0.0 to be around 3 nm at x = 0.3. In addition, the surface roughness average was influenced by the dopant content, where it decreased from 35.6 nm at the pure magnetite to be 25.87 nm at x = 0.3. The ICP examination indicated that the measured contents of Ru ions through competitions were around 41 ppm and increased to 190 ppm comparing with 43 and 199 ppm as a theoretical value both x = 0.1 and 0.5. Regarding magnetic properties, the coercivity raised from 40.11 Oe and raised 44.66 Oe for x = 0.0 and 0.5, respectively. This manipulated behavior of magnetite due to dopant suggests that desired properties could be achieved via the dopant strategy to be used for several applications.

Effect on the Ligand of Triruthenium Unit for Hydrogen Evolution Reaction

At present, various energy problems occur on the earth. In order to solve the problems utilization of hydrogen is a candidate. Because hydrogen is a clean and highly efficient energy that does not produce sulfur oxides and nitrogen oxides and is attracting attention as a substitute for primary energy such as petroleum and natural gas. In this study, we focused on the ruthenium cluster unit (1-mer) forming a cyclic structure having three ruthenium ions in a mixed-valence state. Here, we examined a catalytic function of hydrogen evolution reaction (HER) at the 1-mer modified highly oriented pyrolytic graphite (HOPG) electrode. In addition, we have studied effects of alcohol as ligands for 1-mer. Cyclic voltammetry (CV) and linear sweep voltammetry (LSV) were used for electrochemical measurements. HOPG was modified by drop casting of 0.5 μM 1-mer dichloromethane or methanol solution and used as a working electrode. A Ag/AgCl (KCl sat.) or a reversible hydrogen electrode (RHE) was used as a reference electrode, and a platinum plate was used as a counter electrode. LSV and CV were carried out in 0.1 M HClO4 in the presence of various alcohols such as methanol and ethanol. Figure 1 shows the LSVs of 0.1 M HClO4 at the 1-mer modified HOPG. The surface concentration of 1-mer was cocurated to be 18 nmol cm-2. At the 1-mer modified HOPG electrode, the starting potential of HER was slightly shifted to positive as compared with that of bare HOPG electrode. This means that the 1-mer modified HOPG has a little catalytic activity for HER. On the other hand, addition of alcohol to the system changes drastically the catalytic activity of the HER. Onset potential of HER was shifted to positive by the addition of alcohol. Comparing the current densities in the presence of each alcohol at –0.80 V, the HER current was influenced by the kinds of alcohol. Especially, when methanol was added to the system, the current density of 0.02 A cm-2 at –0.80 V. Although the reason why the catalytic current for HER depends on the type of alcohol is not clear, it may be considered that the THF ligands of 1-mer are substituted by the alcohol used. We have been are studying the effect of surface concentration and nanoscale structure of 1-mer, and the anion of the electrolyte. Figure 1

Ruthenium(IV) Complexes as Potential Inhibitors of Bacterial Biofilm Formation.

With increasing antimicrobial resistance there is an urgent need for new strategies to control harmful biofilms. In this study, we have investigated the possibility of utilizing ruthenium(IV) complexes (H3O)2(HL1)2[RuCl6]·2Cl·2EtOH (1) and [RuCl4(CH3CN)2](L32)·H2O (2) (where L1-2-hydroxymethylbenzimadazole, L32-1,4-dihydroquinoxaline-2,3-dione) as effective inhibitors for biofilms formation. The biological activities of the compounds were explored using E. coli, S. aureus, P. aeruginosa PAO1, and P. aeruginosa LES B58. The new chloride ruthenium complexes were characterized by single-crystal X-ray diffraction analysis, Hirshfeld surface analysis, FT-IR, UV-Vis, magnetic and electrochemical (CV, DPV) measurements, and solution conductivity. In the obtained complexes, the ruthenium(IV) ions possess an octahedral environment. The intermolecular classical and rare weak hydrogen bonds, and π···π stacking interactions significantly contribute to structure stabilization, leading to the formation of a supramolecular assembly. The microbiological tests have shown complex 1 exhibited a slightly higher anti-biofilm activity than that of compound 2. Interestingly, electrochemical studies have allowed us to determine the relationship between the oxidizing properties of complexes and their biological activity. Probably the mechanism of action of 1 and 2 is associated with generating a cellular response similar to oxidative stress in bacterial cells.

Immobilization of Ir(OH)3 Nanoparticles in Mesospaces of Al-SiO2 Nanoparticles Assembly to Enhance Stability for Photocatalytic Water Oxidation

Iridium hydroxide (Ir(OH)3) nanoparticles exhibiting high catalytic activity for water oxidation were immobilized inside mesospaces of a silica-nanoparticles assembly (SiO2NPA) to suppress catalytic deactivation due to agglomeration. The Ir(OH)3 nanoparticles immobilized in SiO2NPA (Ir(OH)3/SiO2NPA) catalyzed water oxidation by visible light irradiation of a solution containing persulfate ion (S2O82−) and tris(2,2′-bipyridine)ruthenium(II) ion ([RuII(bpy)3]2+) as a sacrificial electron acceptor and a photosensitizer, respectively. The yield of oxygen (O2) based on the used amount of S2O82− was maintained over 80% for four repetitive runs using Ir(OH)3/SiO2NPA prepared by the co-accumulation method, although the yield decreased for the reaction system using Ir(OH)3/SiO2NPA prepared by the equilibrium adsorption method or Ir(OH)3 nanoparticles without SiO2NPA support under the same reaction conditions. Immobilization of Ir(OH)3 nanoparticles in Al3+-doped SiO2NPA (Al-SiO2NPA) results in further enhancement of the catalytic stability with the yield of more than 95% at the fourth run of the repetitive experiments.

Versatile formation of Ru(II) hydrazone complexes: Structure, theoretical studies and catalytic activity in α-alkylation

New 1-(anthracen-10-yl)methylene)-2-(benzo[d]thiazol-2-yl)hydrazine (BHA) and 1-(anthracen-10-yl)methylene)-2-(quinolin-2-yl)hydrazine (QHA) ligands were reacted with [RuHCl(CO)(E)3] (E = PPh3 or AsPh3) or [RuCl2(AsPh3)3] in a 1:1 mol ratio in chloroform-ethanol medium to synthesis new ruthenium complexes. All the new ruthenium complexes were analyzed by elemental analysis, IR, NMR (1H, 13C and 31P) spectroscopy, ESI-Mass spectrometry and single crystal XRD techniques. The single crystal XRD study reveals the octahedral geometry around the ruthenium ion. The study also shows that the ligands coordinate with the Ru metal as monoanionic bidentate N^N donors in complexes 1, 3 and 4 and as a neutral bidentate N^N donor in complex 2 by forming five or four member chelate rings. The intramolecular interactions in the crystal lattices were studied by Hirshfeld surface analysis. The results indicate that π-stacking contacts play an important role in the crystal lattices. DFT calculations were carried out to explain the solid structures of complexes 1–3. Moreover, the synthesized complexes were screened as catalysts for the α-alkylation of ketones with alcohols. The effect of various parameters, such as base, solvent, temperature, time, substituents and also catalyst loading, on the catalytic activity were analyzed. The results depict that the complex 3 was found to be an efficient catalyst for the synthesis of α-alkylation products.

Synthesis and structural characterization of facile ruthenium(II) hydrazone complexes: Efficient catalysts in α-alkylation of ketones with primary alcohols via hydrogen auto transfer

As a immersion for development of new complexes, new Ru(II) complexes (1–3) supported by benzothiazole hydrazine Schiff bases of the type [Ru(SAL-HBT)(CO)(AsPh3)2], [Ru(VAN-HBT)(CO)(AsPh3)2] and [Ru(NAP-HBT)(CO)Cl(AsPh3)2] [SAL-HBT = (salicyl((2-(benzothiazol-2yl)hydrazono)methylphenol)), VAN-HBT = 2-((2-(benzothiazol-2-yl)hydrazono)methyl)-6 methoxyphenol) and NAP-HBT = naphtyl-2-((2-(benzothiazol-2-yl)hydrazono)methyl phenol)] were synthesized. Their identities have been established by satisfactory elemental analyses, various spectroscopic techniques (IR, (1H, 13C) NMR) and also mass spectrometry. The ruthenium(II) ion exhibits a hexa coordination with distorted octahedral geometry. In complexes 1 and 2, the ligand coordinated as dianionic tridentate fashion by forming N^N donor five member and N^O donor six member chelate rings. However, in complex 3, the ligand coordinated as monoanionic bidentate fashion by forming N^N donor five-membered ring. The new ruthenium(II) carbonyl complexes were successfully applied as catalysts in α -alkylation of aliphatic and aromatic ketones with alcohols via borrowing hydrogen strategy. Various parameters such as base, solvent, temperature, time and catalyst loading on the catalytic activity were analyzed. From the results, the catalyst 1 was found to be the best catalyst for α-alkylation reaction to obtain excellent yield. The catalytic system has a broad substrate scope, which allows the synthesis of α-alkylated ketones in mild reaction conditions with low catalyst loading under air atmosphere.

A DFT/TD-DFT study on the possible replacement of Ru(II) with Fe(II) in phthalocyanine-based dye-sensitized solar cells

Density functional theory and time-dependent density functional theory (DFT/TD-DFT) methods have been used to study the photo-voltaic and photophysicochemical properties of some metal-free and metal-containing phthalocyanine (Pc) derivatives (1–12) for application in dye-sensitized solar cells (DSSCs). The TD-DFT and molecular ground-state data were used to estimate the relative position of the TiO2 conduction band edge to the lowest unoccupied molecular orbital (LUMO) position (δp). The diffusion coefficients (Dπ), and oscillator strengths (f) at maximum absorption wavelengths of the molecules in the visible or near-infrared (near-IR) region were also estimated. Fluorescence emission (ϕf) and charge collection (ηc) efficiencies obtained using the method reported recently by our group were used in estimating the dyes’ incident photon conversion efficiency (IPCE). The estimated parameters have been used to characterize the dyes and evaluate their suitability for application in photo-voltaic technology both in gas phase and in acetonitrile. The overall results showed that iron(II) could be a possible substitute for ruthenium ion, as the choice metal ion for phthalocyanine-based DSSCs.

Ru(II) complexes containing (2-(pyren-1-ylmethylene)hydrazinyl)benzothiazole: Synthesis, solid-state structure, computational study and catalysis in N-alkylation reactions

Reactions of (2-(pyren-1-ylmethylene)hydrazinyl)benzothiazole (L) with ruthenium(II) prefabricated precursors [RuHCl(CO)(EPh3)3] and [RuH2(CO)(EPh3)3] (E = P or As) afforded new Ru(II) complexes [RuCl(CO)(EPh3)2(L)] and [RuH(CO)(EPh3)2(L)] (E = P or As) (1–4). All the Ru(II) complexes (1–4) were characterized by IR, NMR spectroscopies, ESI-mass spectrometry and elemental analyses. The solid-state structures of Ru(II) complexes (2 and 3) were established by single crystal X-ray analyses and revealed distorted octahedral geometries around the ruthenium(II) ion and mono anionic bidentate N^N coordination mode for hydrazine ligand. The Ru(II) complexes 2 and 3 were also analyzed using Hirshfeld surface analysis and DFT calculations. Moreover, all the complexes (1–4) were utilized in the N-alkylation reactions of amines using alcohol. Complex 3 was found to be highly active towards N-alkylation of different aromatic amines with alcohol.

Synthesis, chemical characterization, PARP inhibition, DNA binding and cellular uptake of novel ruthenium(II)-arene complexes bearing benzamide derivatives in human breast cancer cells

Inhibitors of poly(ADP-ribose) polymerase-1 (PARP-1) showed remarkable clinical efficacy in BRCA-mutated tumors. Based on the rational drug design, derivatives of PARP inhibitor 3-aminobenzamide (3-AB), 2-amino-4-methylbenzamide (L1) and 3-amino-N-methylbenzamide (L2), were coordinated to the ruthenium(II) ion, to form potential drugs affecting DNA and inhibiting PARP enzyme. The four conjugated complexes of formula: C1 [(ƞ6-toluene)Ru(L1)Cl]PF6, C2 [(ƞ6-p-cymene)Ru(L1)Cl]PF6, C3 [(ƞ6-toluene)Ru(L2)Cl2] and C4 [(ƞ6-p-cymene)Ru(L2)Cl2], have been synthesized and characterized. Colorimetric 3-(4.5-dimethylthiazol-2-yl)-2.5-diphenyltetrazolium bromide (MTT) assay showed the highest antiproliferative activity of C1 in HCC1937, MDA-MB-231, and MCF-7 breast cancer cells. Efficiency of inhibition of PARP-1 enzymatic activity in vitro decreased in order: C2 > C4 > 3-AB>C1 > C3. ICP-MS study of intracellular accumulation and distribution in BRCA1-mutated HCC1937 revealed that C1-C4 entered cells within 24 h. The complex C1 showed the highest intracellular accumulation, nuclear-targeting properties, and exhibited the highest DNA binding (39.2 ± 0.6 pg of Ru per μg of DNA) that resulted in the cell cycle arrest in the S phase.

In-situ incorporation of ruthenium/copper nanoparticles in mesoporous silica derived from rice husk ash for catalytic acetylation of glycerol

Abstract Ruthenium and copper nanoparticles were incorporated into MCM-41-like mesoporous silica via a fast sol-gel method at 80 °C using rice husk ash (RHA) as the silica source. The physico-chemical characterization of the synthesized materials was carried out using various analytical techniques. The X-ray diffraction results indicated that the mesoporous silica synthesized in this study had the standard MCM-41 structure. The Fourier transform infrared spectroscopy results showed that ruthenium and copper ions were successfully incorporated into the hexagonal framework of the mesoporous materials. The transmission electron microscopy results revealed that the RHA-MCM-41, MCM-41-10Ru, and MCM-41-10Ru10Cu samples consisted of ordered mesoporous straight channels. MCM-41-10Cu consisted of copper nanospheres. MCM-41-10Ru and MCM-41-10Ru10Cu showed ruthenium nanoparticle agglomerates distributed on their external MCM-41 framework surfaces. In the case of MCM-41-10Cu and MCM-41-10Ru10Cu, copper ions were homogeneously dispersed on the internal surface of the agglomerated porous silica matrix. The as-prepared Ru- and Cu-doped MCM-41 catalyst was used for the acetylation of glycerol. The catalyst showed a high conversion of 98% and high shape selectivity towards the formation of diacetin and triacetin unlike conventional silica-based catalysts, which show selectivity towards the formation of monoacetin.

Reusable hybrid foam catalyst for hydrolytic dehydrogenation of amine adducts of borane: Porous PVA-Immobilized Co–Ru nanoparticles

Abstract In this study, reusable hybrid foam catalyst was synthesized, based on reduction of cobalt and ruthenium ions into polyvinyl alcohol (Co–Ru/PVA), for hydrolysis of ammonia borane (NH3BH3, AB) and its derivative methylamine borane, (CH3NH2BH3, MeAB), to generate hydrogen. Sixteen different hybrid catalysts were synthesized under different preparation conditions. The effect of different independent variables such as reduction medium and temperature, solvent, and post-treatment on hydrogen evolution rate as a dependent variable was evaluated using the Analysis of Variance (ANOVA). It was found that Co–Ru/PVA-16 was exhibited the highest catalytic activity for the NH3BH3 hydrolysis reaction based on the statistical analysis observations. The Co–Ru/PVA-16 hybrid catalyst was characterized by several advance techniques as X-ray diffraction (XRD), X-ray photoelectron electron spectroscopy (XPS), high-resolution transmission electron microscopy (HR-TEM), scanning electron microscopy (SEM), inductively coupled plasma mass spectrometry (ICP-MS) and Fourier transform Infrared spectroscopy (FT-IR). High initial turnover frequency (TOF) of 3384.23 molH2mol−1CoRumin−1 and 346.16 molH2mol−1CoRumin−1 were reported for NH3BH3 and CH3NH2BH3 hydrolysis, respectively. Besides high catalytic activity, Co–Ru/PVA-16 hybrid catalyst was reused in the hydrolysis of NH3BH3 over 46 cycles without decrease in H2 evolution rate.

Carbon-supported ruthenium catalysts prepared by a coordination strategy for acetylene hydrochlorination

The development of efficient and stable non-mercury catalysts for the chlor-alkali industry is desirable but remains a great challenge. Herein, we design a series of ruthenium catalysts for acetylene hydrochlorination by regulating the electronic structure of ruthenium ions through coordination with various ligands (thiourea, phenanthroline, and L–lactic). The turnover frequencies (TOFs) and apparent activation energies for the acetylene hydrochlorination have a linear relationship with the binding energy of Ru3+ in the ruthenium catalysts. The synergetic effect of the ruthenium ion and ligands plays an important role in acetylene hydrochlorination. The Ru–Thi/AC catalyst with thiourea as the ligand shows the highest TOF and stability in acetylene hydrochlorination. The present study provides a rational method to regulate the electronic structure of supported metal catalysts with high catalytic performance exhibited by the carbon-supported heterogeneous catalysts.

Electron-Stimulated Luminescence of $${\mathbf{Ru(bpy)}}_{{\mathbf{3}}}^{{{\mathbf{2 + }}}}$$ in the Sonolysis of Solutions of $${\mathbf{Ru(bpy)}}_{{\mathbf{3}}}^{{{\mathbf{2 + }}}}$$ and $${\mathbf{Ru(bpy)}}_{{\mathbf{3}}}^{{{\mathbf{3 + }}}}$$

The role of hydrated electrons in sonochemiluminescence (SCL) arising from the single- and multibubble sonolysis of aqueous solutions of $${\text{Ru(bpy)}}_{{\text{3}}}^{{{\text{2 + }}}}$$ and $${\text{Ru(bpy)}}_{{\text{3}}}^{{{\text{3 + }}}}$$ is revealed. Possible chemiluminescent reactions between ruthenium ions and the products of water sonolysis are considered. A conclusion is drawn concerning the previously unknown formation of eaq upon the single-bubble sonolysis of water and the absence of this product upon multibubble sonolysis.

Photoswitchable azobenzene functionalized anthraquinone and benzimidazole Ru(II)-p-cymene organometallic complexes

A series of five new Ru(II) (η6-p-cymene) organometallic complexes with the incorporation of modified azobenzimidazole and anthraquinone based ligands were synthesized and found to be an excellent photoswitching property in different solvents. The push-pull effect affects the lifetime of the complexes during photoisomerization processes. Upon irradiation at 254 nm UV light, these complexes efficiently undergo the trans ↔ cis isomerization, which is dependant on solvent polarity as well as substituent pattern. In DCM (dichloromethane), two states stable isomers have been found, but in a higher polar solvent (CH3CN), the fast conversion of trans isomer to the cis isomer takes place. However, the cis isomer proceeds slower thermal isomerization to its original trans isomer in dark condition at room temperature with a higher half-life of the complexes. The photoisomerization study has been monitored by using the UV–vis absorption and 1H NMR studies, which indicates that the successful trans ↔ cis isomerization takes place. The coordination of the ruthenium ion successfully alters the electronic properties of ligands. The excellent photoswitching properties and higher half-life of these organometallic complexes are exciting candidates for their applications in catalytic, photonic devices, and medicinal purposes.

Rhodium(0), Ruthenium(0) and Palladium(0) nanoparticles supported on carbon-coated iron: Magnetically isolable and reusable catalysts for hydrolytic dehydrogenation of ammonia borane

We report the synthesis of magnetically isolable ruthenium(0), rhodium(0), and palladium(0) nanoparticles, supported on carbon-coated magnetic iron particles, and their employment as catalysts in hydrolysis of ammonia borane. Carbon-coated iron (C–Fe) particles are obtained by co-processing of iron powders with methane in a radio frequency thermal plasma reactor. The impregnation of ruthenium(III), rhodium(III) and palladium(II) ions on the carbon-coated iron particles followed by aqueous solution of sodium borohydride leads to the formation of respective metal(0) nanoparticles supported on carbon-coated iron, M0/C–Fe NP (M = Ru, Rh, and Pd) at room temperature. M0/C–Fe NPs are characterized using the ICP-OES, XPS, TEM, and EDX techniques and tested as catalysts for hydrolysis of ammonia borane at 298 K. The results reveal that Rh0/C–Fe, Ru0/C–Fe, Pd0/C–Fe catalysts provide turnover frequency of 83, 93, and 29 min−1, respectively, in this industrially important reaction. More importantly, these magnetically separable metal(0) nanoparticles show very high reusability with no noticeable activity loss in subsequent runs of hydrolysis evolving 3.0 equivalent H2 per mole of ammonia borane.

Reductive amination of levulinic acid to N-substituted pyrrolidones over RuCl3 metal ion anchored in ionic liquid immobilized on graphene oxide

Reductive amination of biomass derived Levulinic acid (LA) for the synthesis of N-substituted pyrrolidones is one of the highly attractive routes for biomass valorization. The supported homogeneous metal precursor into the solid surface is an important context in the field of catalysis because these types of catalysts provide the heterogeneous nature and meet the needs of recyclability. Herein, we have reported a synthesis of catalyst with ruthenium ion supported on ionic liquid immobilized into graphene oxide (Ru@GOIL) and its application for reductive amination reaction. Synthesized catalyst is characterized using different analytical techniques such as FT-IR, XRD, XPS, TGA, FEG-SEM, TEM and EXAFS analysis. The prepared Ru@GOIL found to be highly effective for reductive amination of LA and under these optimized conditions various N-substituted pyrrolidones derivatives were synthesized in excellent yield (78–93%). Ru@GOIL catalyst demonstrated great catalytic performance for reductive amination reaction of LA giving good turnover frequency (TOF = 62 h−1) value in comparison with other catalysts. The Ru@GOIL catalyst was recycled for six reaction runs with slight drop-in activity after 4th cycle. Practical applicability of the developed catalyst was successfully demonstrated by direct transformation of biomass waste (rice husk and wheat straw) derived LA to N-substituted pyrrolidones.