PdNPs@P2VP-Fe3O4 Organic–Inorganic Hybrid Microgels as a Nanoreactor for Selective Aerobic Oxidation of Alcohols

Nabid, Mohammad Reza; Bide, Yasamin; Aghaghafari, Elham; Rezaei, Seyed Jamal Tabatabaei

doi:10.1007/s10562-013-1107-2

Cited by 31 publications

(25 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Surface modification of Fe 3 O 4 was performed with APTS. [55,61] The magnetite nanoparticles (1 g) were added to 300 ml of ethanol and sonicated with an ultrasonicator for 15 min. Then, 4 ml of APTS and 4 ml of deionized water were added to the dispersion under nitrogen atmosphere.…”

Section: Synthesis Of Apts-coated Mnpsmentioning

confidence: 99%

“…Ni, Co, Fe and Cu metals or oxides). [47][48][49][50][51][52] To take advantage of these characteristics and also as a part of our ongoing research programme on the design of new catalysts for the development of useful and green synthetic methodologies, [15,16,[53][54][55][56][57][58][59] herein, we report a dendritic magnetic catalyst based on Ni(0) nanoparticles, an inexpensive non-noble metal, for selective hydrogenation of nitro and nitrile compounds in the presence of various reducible substituents such as carboxylic acid, ketone, aldehyde and halogen to the respective amines using NaBH 4 as the reducing agent in the aqueous phase. …”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Chemo‐selective reduction of nitro and nitrile compounds using Ni nanoparticles immobilized on hyperbranched polymer‐functionalized magnetic nanoparticles

Rezaei

Malekzadeh

Poulaei

et al. 2017

Applied Organom Chemis

View full text Add to dashboard Cite

The nitro and nitrile groups in aromatic and aliphatic compounds containing various reducible substituents such as carboxylic acid, ketone, aldehyde and halogen are selectively reduced to the corresponding amines in water as a green solvent with excellent yields by employing NaBH 4 in the presence of Fe 3 O 4 @PAMAM/Ni(0)-b-PEG nanocatalyst. The morphology and structural features of the catalyst were characterized using various microscopic and spectroscopic techniques. The designed catalyst system because of it being covered with hydrophilic polymers is soluble in a wide range of solvents (e.g. water and ethanol) and suitable for immobilizing and stabilizing Ni nanoparticles in aqueous mediums. In addition, the catalyst can be easily recovered from a reaction mixture by applying an external magnetic field and can be reused up to six runs without significant loss of activity.

show abstract

Section: Synthesis Of Apts-coated Mnpsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Chemo‐selective reduction of nitro and nitrile compounds using Ni nanoparticles immobilized on hyperbranched polymer‐functionalized magnetic nanoparticles

Rezaei

Malekzadeh

Poulaei

et al. 2017

Applied Organom Chemis

View full text Add to dashboard Cite

show abstract

“…[37] In addition, the oxidation of 2-substitute benzyl alcohol was obtained in a low yield (Table 1, entry 4), which may be attributed to the steric hindrance by the surface of the silver sites. [38] A hypothesis of the possible mechanism of catalytic oxidation of alcohols by p(AA)-Ag was presented in Scheme 2. Deprotonation of alcohol was promoted by K 2 CO 3 to from alkoxide on the Ag surfaces.…”

Section: The Catalytic Activity Of P(aa)-ag Toward the Oxidation Rementioning

confidence: 99%

“…3.4 | Comparison with other reported catalytic system Table 3 provides a comparison of the NP reduction results obtained (k app and E a ) for our present catalytic system with those reported in the literatures. [43][44][45][46][47][48][49][50][51] Also, oxidation of benzyl alcohol under heterogeneous conditions over a variety of catalysts has been studied [52][53][54][55][56][57] ( Table 4). From Table 3 and 4, it is seen that p(AA)-Ag showed higher catalytic activity over reported catalysts.…”

Section: The Catalytic Activity Of P(aa)-ag Toward the Oxidation Rementioning

confidence: 99%

Ag‐nanoparticle embedded p(AA) hydrogel as an efficient green heterogeneous Nano‐catalyst for oxidation and reduction of organic compounds

Ghorbanloo

Heydari

Yahiro

2017

Applied Organom Chemis

View full text Add to dashboard Cite

P(AA)‐Ag heterogeneous catalyst system comprised of Ag nanoparticles embedded within hydrogel matrices has been described for the selective aerobic oxidation of alcohols and reduction of nitro phenols in water. P(AA)‐Ag nanocomposite was characterized by Fourier transform infrared (FT‐IR), scanning electron microscopy (SEM), transmission electron microscopy (TEM), thermal gravimetric analysis (TGA), X‐Ray photoelectron spectroscopy (XPS) and inductively coupled plasma atomic emission spectrometer (ICP). Catalytic activity of p(AA)‐Ag catalyst was investigated in the aerobic oxidation of primary alcohols and reduction of nitro compounds by emphasizing the effect of different parameters such as temperature, catalyst amount, substituent effect, etc. The catalyst was easily recovered from the reaction medium and it could be re‐used for other three runs without significant loss of activity.

show abstract

“…According to the above mentioned reasons, and in continuation of our effort to design and synthesize novel catalysts for various reactions [43][44][45][46][47][48][49], herein we report the synthesis of nickel nanoparticles stabilized on rGO-bPEI aerogel in a single step and using the as-obtained material as an efficient catalyst for hydrogen generation from the hydrolysis of NaBH 4 .…”

Section: Introductionmentioning

confidence: 99%

One Pot Synthesis of Nickel Nanoparticles Stabilized on rGO/Polyethyleneimine Aerogel for the Catalytic Hydrogen Generation

2015

Self Cite

View full text Add to dashboard Cite

In this study, one pot synthesis of nickel nanoparticles immobilized on reduced graphene oxidebranched polyethyleneimine (NiNPs@rGO-bPEI) aerogel is reported. To produce graphene-based supramolecular hydrogel, bPEI with a high density of amine groups was used as a cross-linking agent. The simultaneous co-reduction of GO and nickel ions was carried out using sodium borohydride (NaBH 4 ). The catalytic activity of the NiNPs@rGO-bPEI aerogel was investigated for hydrogen generation from the hydrolysis of NaBH 4 at room temperature. The effect of various amounts of bPEI as the linking agent on the structure of the aerogel product was investigated. Moreover, the influence of various amounts of nickel loading on the catalytic activity of NiNPs@rGO-bPEI was also studied. The ease of synthesis (only at one step), low cost, being environmentally benign, existence of nitrogen and nickel to have interaction with molecular hydrogen, and also the large surface area are the key features of the synthesized catalyst that makes it suitable for industrial applications.

show abstract

PdNPs@P2VP-Fe3O4 Organic–Inorganic Hybrid Microgels as a Nanoreactor for Selective Aerobic Oxidation of Alcohols

Cited by 31 publications

References 45 publications

Chemo‐selective reduction of nitro and nitrile compounds using Ni nanoparticles immobilized on hyperbranched polymer‐functionalized magnetic nanoparticles

Chemo‐selective reduction of nitro and nitrile compounds using Ni nanoparticles immobilized on hyperbranched polymer‐functionalized magnetic nanoparticles

Ag‐nanoparticle embedded p(AA) hydrogel as an efficient green heterogeneous Nano‐catalyst for oxidation and reduction of organic compounds

One Pot Synthesis of Nickel Nanoparticles Stabilized on rGO/Polyethyleneimine Aerogel for the Catalytic Hydrogen Generation

Contact Info

Product

Resources

About