Studies on Ferrofluid Synthesized by Ultra-Sonication of Ferrite (Fe<sub>3</sub>O<sub>4</sub>) and Microwave Assisted Grating of Poly-Dimethyl Siloxane (PDMS) with Carboxylic Acids

Kandpal, N. D.; Sah, Neeti; Loshali, Renu; Joshi, Rashmi; Prasad, J. S.; Pandey, Kavita; Sharma, Swapnil

doi:10.1080/02726351.2013.773389

Cited by 10 publications

(10 citation statements)

References 40 publications

(33 reference statements)

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“…The resulting Fe 3 O 4 nanoparticles were separated by an external magnetic field and then washed with water three times. Finally, the magnetic Fe 3 O 4 nanoparticles were dispersed in deionized water . The reaction principle is as follows:

{2Fe}_{3} + + {Fe}_{2} + + 8OH - \cdot {Fe}_{3} O_{4} + {4H}_{2} normalO

…”

Section: Methodsmentioning

confidence: 99%

Inulin Hydrolysis by Immobilized Inulinase on Functionalized Magnetic Nanoparticles Using Soy Protein Isolate and Bovine Serum Albumin

Torabizadeh

Mikani

Rahmanian

2018

J Chinese Chemical Soc

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Inulin hydrolysis was performed by inulinase from Aspergillus niger covalently immobilized on magnetite nanoparticles (Fe 3 O 4 ) covered with soy protein isolate (Fe 3 O 4 /SPI) functionalized by bovine serum albumin (Fe 3 O 4 /SPI/BSA) nanoparticles as a new bio-functional carrier. The specific activity and protein content of the immobilized enzyme were 25.99 U/mg and 3.52 mg/mL, respectively, with 80% enzyme loading. The immobilized inulinase showed maximum activity at 45 C, which is 5 C higher than the optimum temperature of the free enzyme. Also, the optimum pH of the immobilized enzyme shifted from 6 to 5.5, which is more acidic compared to that of the free enzyme. The K m value of immobilized inulinase decreased to 2.03 mg/mL. Thermal stability increased considerably at 65 and 75 C, and a 5.13-fold rise was detected in the enzyme half-life at 75 C after immobilization. Moreover, 80% of initial activity of immobilized inulinase remained after 10 cycles of hydrolysis.

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{2Fe}_{3} + + {Fe}_{2} + + 8OH - \cdot {Fe}_{3} O_{4} + {4H}_{2} normalO

…”

Section: Methodsmentioning

confidence: 99%

Inulin Hydrolysis by Immobilized Inulinase on Functionalized Magnetic Nanoparticles Using Soy Protein Isolate and Bovine Serum Albumin

Torabizadeh

Mikani

Rahmanian

2018

J Chinese Chemical Soc

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“…The control of the particle size in such colloids is of relevance because at the nanoscale, magnetite shows a magnetic behavior dependent on particle size distribution, as will be discussed later. Examples of methods for the synthesis of colloidal Fe 3 O 4 include ultrasound irradiation, controlled hydrolysis, sol–gel processes, hydrothermal treatment, thermal decomposition of molecular precursors, electrochemical synthesis and controlled precipitation . Aqueous methods for the preparation of Fe 3 O 4 are particularly interesting to obtain water compatible nanosorbents.…”

Section: Magnetic Nanosorbentsmentioning

confidence: 99%

Functionalized Inorganic Nanoparticles for Magnetic Separation and SERS Detection of Water Pollutants

et al. 2018

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Inorganic nanoparticles (NPs) have emerged in the last decades as key materials for a number of technologies. In particular, noble metal (Ag, Au) and iron oxide NPs have revealed important applications due to their plasmonic and magnetic properties, respectively. Among these applications, this review provides, on one hand, an overview on the use of colloidal metal NPs in surface enhanced Raman scattering (SERS) chemical analysis and, on the other hand, the application of iron oxides as a new class of nanosorbents for water pollutants. These distinct types of NPs are the main building blocks to produce [a] Raman spectroscopy is a powerful analytical tool for chemical characterization, providing information about molecular structure, surface processes, and interface reactions. [31,32] Raman spectroscopy is based on the inelastic scattering of photons by chemical species and materials (Raman scattering). Among the incident photons that hit the sample only a small portion is inelastically scattered, i.e. comes out at a different frequency from the incident light. The spectral information is based on the detection of these scattered photons that are recorded as energy shifts (Raman shifts) from the wavenumber of the elastic scattered photons (Rayleigh scattering). Each band in the Raman spectrum can be assigned to a vibrational mode (or Paula

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“…2). In addition, there are weak absorption bands at wave number 1630-1380 and around 3600-3400 cm -1 matching to stretching vibration of OH groups on the surface of supported catalyst indicates the lack of presence of absorbed moisture [36][37][38].…”

Section: X-ray Diffractionmentioning

confidence: 99%

Synthesis and Identification of Co3O4·Fe3O4/CaO Spinel Supported Catalyst

Arraq¹,

Kadhim²

2018

Asian J. Chem.

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The spinel semiconductor oxide found in the formula AB2O4 for normal spinel structure, where A is a divalent cation that usually occupy the tetrahedral sites and B is a trivalent cations that normally occupy the octahedral sites in the spinel cubic structure. Another type of spinel structure is an inverse has the form B(AB)O4, where B is a trivalent metal cation, half of this cation occupy the tetrahedral sites and another occupy the octahedral sites, A is divalent metal cation occupy an octahedral site in spinel [1,2]. The most interesting spinel structure materials in the magnetic and electrical field usually include iron and cobalt at various oxidation states [3-5]. The transition metal oxides which defined are compounds consist of oxygen atoms coalescence to transition metals [6,7] and used as a photocatalysis in wastewater treatment [8], these catalyst were capable of absorbing light and creating electronhole pairs that allow electronic transition in the reaction because of the formation of positive holes, which resulted from the transfer electron from the valence band to the conduction band of semiconductor by absorbing energy from UV light, visible light or both producing an electron/hole pair (e-CB/h + VB) which is able to reduce and/or oxidize compound and degrade of pollutants in aqueous solution by using solid heterogeneous catalyst such as mixed metal oxides, which have wide applications as catalyst

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Studies on Ferrofluid Synthesized by Ultra-Sonication of Ferrite (Fe₃O₄) and Microwave Assisted Grating of Poly-Dimethyl Siloxane (PDMS) with Carboxylic Acids

Cited by 10 publications

References 40 publications

Inulin Hydrolysis by Immobilized Inulinase on Functionalized Magnetic Nanoparticles Using Soy Protein Isolate and Bovine Serum Albumin

Inulin Hydrolysis by Immobilized Inulinase on Functionalized Magnetic Nanoparticles Using Soy Protein Isolate and Bovine Serum Albumin

Functionalized Inorganic Nanoparticles for Magnetic Separation and SERS Detection of Water Pollutants

Synthesis and Identification of Co3O4·Fe3O4/CaO Spinel Supported Catalyst

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Studies on Ferrofluid Synthesized by Ultra-Sonication of Ferrite (Fe3O4) and Microwave Assisted Grating of Poly-Dimethyl Siloxane (PDMS) with Carboxylic Acids

Cited by 10 publications

References 40 publications

Inulin Hydrolysis by Immobilized Inulinase on Functionalized Magnetic Nanoparticles Using Soy Protein Isolate and Bovine Serum Albumin

Inulin Hydrolysis by Immobilized Inulinase on Functionalized Magnetic Nanoparticles Using Soy Protein Isolate and Bovine Serum Albumin

Functionalized Inorganic Nanoparticles for Magnetic Separation and SERS Detection of Water Pollutants

Synthesis and Identification of Co3O4·Fe3O4/CaO Spinel Supported Catalyst

Contact Info

Product

Resources

About

Studies on Ferrofluid Synthesized by Ultra-Sonication of Ferrite (Fe₃O₄) and Microwave Assisted Grating of Poly-Dimethyl Siloxane (PDMS) with Carboxylic Acids