V2O5 Anchored RuO2: An Efficient Nanocatalyst for Aerial Oxidation of Alcohols

Babu, Sundaram Ganesh; Krishnamoorthi, S.; Thiruneelakandan, R.; Karvembu, Ramasamy

doi:10.1007/s10562-014-1262-0

Cited by 8 publications

(3 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As indicated in Table 2, for all samples, the indirect band gap energies are smaller than the direct band gap energies, indicating indirect band gap materials. [37,38] According to the results obtained, both the direct and indirect band gap values increase with increase in the core-shell ratios. It should be mentioned that for all the three samples, the core concentration was constant and the shell material concentration in solution was increased from 0.5 to 1, so we expected the shell thickness to increase as well.…”

Section: Optical Characterizationmentioning

confidence: 96%

Studying Structural and Optical Properties of TiO₂–SnO₂ Core–Shell Synthesized by Sol–Gel Route

Bitaraf

Ghazi

Izadifard

2020

Crystal Research and Technology

View full text Add to dashboard Cite

Herein, the TiO2–SnO2 core–shell structures with the core‐to‐shell molar ratios of 5:0.5, 5:0.67, and 5:1 are synthesized by the sol–gel route, and then the structural and optical properties of the synthesized samples are investigated. In order to characterize the samples, the XRD, Raman, FESEM, and TEM techniques are used for their structural verification, while the UV–visible and photoluminescence spectra are used for their optical characterization. The XRD results obtained showed that the annealed TiO2 sample has an anatase tetragonal structure and that the core–shell samples contain the diffraction peaks of both the core TiO2 and the shell SnO2. The XRD results obtained are supported by Raman spectroscopy. The TEM images obtained show evidence of the formation of the composite (core–shell) nanostructure in the samples. The optical investigation shows that the band gaps of the core–shell samples are indirect, like the TiO2 core itself, and increase with an increase in the core‐to‐shell molar ratio. These results also show that the synthesized core–shell samples are suitable candidates for use in optoelectronic devices.

show abstract

Section: Optical Characterizationmentioning

confidence: 96%

Studying Structural and Optical Properties of TiO₂–SnO₂ Core–Shell Synthesized by Sol–Gel Route

Bitaraf

Ghazi

Izadifard

2020

Crystal Research and Technology

View full text Add to dashboard Cite

show abstract

“…Although the catalyst was highly active for the selective oxidation of alcohols using periodic acid, no activity was observed using oxygen as the green oxidant. To date, only a limited amount of studies have been reported on the application of Ru III -based catalysts in the aerobic oxidation of alcohols [30][31][32]. Moreover, many of these catalysts exhibit fundamental drawbacks as high catalyst loadings (5 mol% [Ru]) or a large excess of oxygen (20 atm) is required as the oxidant [33,34].…”

Section: Of 12mentioning

confidence: 99%

A Ru-Complex Tethered to a N-Rich Covalent Triazine Framework for Tandem Aerobic Oxidation-Knoevenagel Condensation Reactions

et al. 2021

View full text Add to dashboard Cite

Herein, a highly N-rich covalent triazine framework (CTF) is applied as support for a RuIII complex. The bipyridine sites within the CTF provide excellent anchoring points for the [Ru(acac)2(CH3CN)2]PF6 complex. The obtained robust RuIII@bipy-CTF material was applied for the selective tandem aerobic oxidation–Knoevenagel condensation reaction. The presented system shows a high catalytic performance (>80% conversion of alcohols to α, β-unsaturated nitriles) without the use of expensive noble metals. The bipy-CTF not only acts as the catalyst support but also provides the active sites for both aerobic oxidation and Knoevenagel condensation reactions. This work highlights a new perspective for the development of highly efficient and robust heterogeneous catalysts applying CTFs for cascade catalysis.

show abstract

“…[ 36–41 ] Despite all advantages of boehmite NPs, it was rarely used as heterogeneous support during recent years. [ 42,43 ] Therefore, we report a complex of copper on boehmite NPs (Cu‐Guanidine@BO‐NPs) as efficient and heterogeneous catalyst for the chemoselective sulfoxidation of sulfides using H 2 O 2 as oxidant reagent and also for the preparation of four‐membered heterocycles such as tetrazoles via [3 + 2] cycloaddition of NaN 3 to the nitriles. Tetrazoles as nitrogen rich structures of organic compounds were employed in pharmaceuticals, medicine, biochemistry, photographic agents and especially in explosives.…”

Section: Introductionmentioning

confidence: 99%

Guanidine complex of copper supported on boehmite nanoparticles as practical, recyclable, chemo and homoselective organic–inorganic hybrid nanocatalyst for organic reactions

Jafari

Ghorbani‐Choghamarani

Hasanzadeh

2020

Applied Organom Chemis

View full text Add to dashboard Cite

Boehmite (BO) nanoparticles (NPs) were prepared via the injection of aqueous NaOH solution to aqueous aluminum nitrate solution at room temperature. Afterwards, a new complex of copper was immobilized on BO-NPs (Cu-Guanidine@BO-NPs). This heterogeneous nanocatalyst was used as a practical, recyclable, chemo and homoselective nanocatalyst in the organic processes, i.e. the preparation of tetrazole five-membered heterocycles and chemoselective sulfoxidation of sulfides using H 2 O 2 as oxidant. In this sense, the prepared nanocatalyst was characterized by AAS, N 2 adsorptiondesorption isotherms, WDX, EDS, SEM, and TGA techniques. The reusability of this catalyst was investigated in the described organic reactions for several runs without notable loss of its catalytic activity. Moreover, all of the tetrazole and sulfoxide derivatives were isolated in high Turn Over Number (TON) and Turn Over Frequency (TOF) numbers indicating the high activity and selectivity of Cu-Guanidine@BO-NPs in the described reactions.

show abstract

V2O5 Anchored RuO2: An Efficient Nanocatalyst for Aerial Oxidation of Alcohols

Cited by 8 publications

References 41 publications

Studying Structural and Optical Properties of TiO₂–SnO₂ Core–Shell Synthesized by Sol–Gel Route

Studying Structural and Optical Properties of TiO₂–SnO₂ Core–Shell Synthesized by Sol–Gel Route

A Ru-Complex Tethered to a N-Rich Covalent Triazine Framework for Tandem Aerobic Oxidation-Knoevenagel Condensation Reactions

Guanidine complex of copper supported on boehmite nanoparticles as practical, recyclable, chemo and homoselective organic–inorganic hybrid nanocatalyst for organic reactions

Contact Info

Product

Resources

About

V2O5 Anchored RuO2: An Efficient Nanocatalyst for Aerial Oxidation of Alcohols

Cited by 8 publications

References 41 publications

Studying Structural and Optical Properties of TiO2–SnO2 Core–Shell Synthesized by Sol–Gel Route

Studying Structural and Optical Properties of TiO2–SnO2 Core–Shell Synthesized by Sol–Gel Route

A Ru-Complex Tethered to a N-Rich Covalent Triazine Framework for Tandem Aerobic Oxidation-Knoevenagel Condensation Reactions

Guanidine complex of copper supported on boehmite nanoparticles as practical, recyclable, chemo and homoselective organic–inorganic hybrid nanocatalyst for organic reactions

Contact Info

Product

Resources

About

Studying Structural and Optical Properties of TiO₂–SnO₂ Core–Shell Synthesized by Sol–Gel Route

Studying Structural and Optical Properties of TiO₂–SnO₂ Core–Shell Synthesized by Sol–Gel Route