Monolithic CuO–NiO aerogels via an epoxide addition route

Shobe, Andrew M.; Gill, Simerjeet K.; Hope‐Weeks, Louisa J.

doi:10.1016/j.jnoncrysol.2010.03.002

Cited by 17 publications

(14 citation statements)

References 39 publications

(49 reference statements)

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“…For the synthesis of mixed metal oxide nanoparticles, different methods such as homogenous precipitation [15][16][17], coprecipitation [18,19], impregnation [20], sol-gel [21,22], sonochemical [23], micro-emulsion [24], hydrothermal [25], thermal decomposition [26] and chemical vapor deposition [27] have been employed. Among the reported preparation methods, solution based ones possess some advantages; they lead to materials with fine particle size, high purity and good homogeneity.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of CuO@NiO core-shell nanoparticles by homogeneous precipitation method

Bayal

Jeevanandam

2012

Journal of Alloys and Compounds

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Section: Introductionmentioning

confidence: 99%

Synthesis of CuO@NiO core-shell nanoparticles by homogeneous precipitation method

Bayal

Jeevanandam

2012

Journal of Alloys and Compounds

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“…Based on the literature, the combination of metals or metal oxides in a common matrix can result in materials with new structures and superior properties . To obtain these nanosized materials different procedures such as impregnation, sol–gel, sonochemical, hydrothermal, thermal decomposition and chemical vapor deposition have been utilized …”

Section: Introductionmentioning

confidence: 99%

“…[10] To obtain these nanosized materials different procedures such as impregnation, sol-gel, sonochemical, hydrothermal, thermal decomposition and chemical vapor deposition have been utilized. [11][12][13][14][15][16][17] Numerous reports are accessible on the application of metal and metal oxides nanocatalysts, for the reduction of nitroaromatic compounds in the presence of NaBH 4.…”

Section: Introductionmentioning

confidence: 99%

Nano NiO/AlMCM‐41, a green synergistic, highly efficient and recyclable catalyst for the reduction of nitrophenols

Derikvand

Rahmati

Azadbakht

2019

Applied Organom Chemis

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Highly ordered mesoporous molecular sieves AlMCM‐41 and a new NiO/AlMCM‐41 nanocomposite were synthesized using a sol–gel method. Fourier transform infrared (FT‐IR) spectroscopy, X‐ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), energy dispersive X‐ray spectroscopy (EDX), and N2 adsorption desorption analyses were used to examine the structure, morphology, size and phase composition of the synthesized NiO/AlMCM‐41 nanocomposites. AlMCM‐41 embedded with NiO nanoparticles was subsequently prepared using different nickel loadings in a direct synthetic route. The results show the successful deposition of NiO nanoparticles onto the framework of AlMCM‐41. AlMCM‐41 provides enormous benefits such as environmentally safe, economic viability and porosity when used as support for NiO nanoparticles. The excellent catalytic activities of AlMCM‐41 and NiO/AlMCM‐41 were investigated for the reduction of nitrophenols (4‐NP, 2‐NP) to aminophenols (4‐AP, 2‐AP) in water at ambient temperature. The best observed performance of reduction of NP with 100% conversion into analogous amino derivatives occurred within 6 min with an estimated rate constant of 0.46 min−1. The efficiency of reduction was observed to increase as a function of NiO enrichment. The NiO/AlMCM‐41 nanocomposite could be recycled and reused up to five times without noticeable change in its structure and activity. These properties make NiO/AlMCM‐41 nanocomposite an ideal platform to study various heterogeneous catalytic processes which can have application in purification, catalysis, sensing devices, and green chemistry.

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“…Also, aerogels are highly porous materials consisting of a three-dimensional mesoporous network of nanoparticles. But, expensive and hazardous precursors beside a highrisk supercritical drying process are the main drawback of aerogel synthesis [22,23]. So, in this research, we report fabrication of nanostructure mesoporous magnetic ceramic foam, using the synthesized cobalt ferrite nanoparticles, by space holder agent technique and through the powder metallurgy pathway.…”

Section: Introductionmentioning

confidence: 99%

Characterization of Mesoporous Cobalt Ferrite Foam Fabricated from Sol-Gel-Derived Nanoparticles

Emamian

Honarbakhsh-Raouf

Ataie

et al. 2015

J Supercond Nov Magn

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Porous magnetic ceramics have promising applications in filtering, sensor, catalyst, etc. This work concerns to the fabrication of mesoporous magnetic foam using synthesized nanopowders Singlephase cobalt ferrite nanopowders with a mean particle size of 60 nm were synthesized by modified Pechinitype sol-gel method, without pH adjustment, by calcination at 750 • C for 1 h. Precursor and derived cobalt ferrite nanopowders were characterized by thermogravimetry and differential scanning calorimetry, Xray diffraction pattern, scanning and transmission electron microscopes and vibration sample magnetometer analyses, proportionately. Furthermore, stereomicroscope and nitrogen gas adsorption-desorption analysis were employed for evaluating the resultant monolithic products Pure carbamide and nanopowders were subjected to successfully fabrication of cobalt ferrite foam using the space holder agent method. Total porosity of the produced foam was estimated about 58 %. The results demonstrated that obtained cobalt ferrite foam has a mesoporous structure and its surface area was calculated as 1.342 m 2 /g. Morphological analyses showed that the cell walls of the foam consist of sintered particles without abnormal grain growth microstructure. Also, the average particle sizes of cell walls were about 25 nm. The magnetic properties of fabricated foam favorably were A. Honarbakhsh-raouf close to the theoretical values of bulk cobalt ferrite, so that the coercivity and saturation magnetization of foam were gained 0.89 kOe and 75.8 emu/g, respectively.

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Monolithic CuO–NiO aerogels via an epoxide addition route

Cited by 17 publications

References 39 publications

Synthesis of CuO@NiO core-shell nanoparticles by homogeneous precipitation method

Synthesis of CuO@NiO core-shell nanoparticles by homogeneous precipitation method

Nano NiO/AlMCM‐41, a green synergistic, highly efficient and recyclable catalyst for the reduction of nitrophenols

Characterization of Mesoporous Cobalt Ferrite Foam Fabricated from Sol-Gel-Derived Nanoparticles

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