Nanoparticles as immobilization. Medical search. Frequent questions

Magnetic nanoparticles are a class of nanoparticle that can be manipulated using magnetic fields. (wikipedia.org)
Magnetic nanoparticle clusters that are composed of a number of individual magnetic nanoparticles are known as magnetic nanobeads with a diameter of 50-200 nanometers. (wikipedia.org)
The physical and chemical properties of magnetic nanoparticles largely depend on the synthesis method and chemical structure. (wikipedia.org)
Ferrite nanoparticles or iron oxide nanoparticles (iron oxides in crystal structure of maghemite or magnetite) are the most explored magnetic nanoparticles up to date. (wikipedia.org)
However, the reactivity of the magnetic nanoparticles can be improved by coating a layer of silica onto their surface. (wikipedia.org)
The metallic core of magnetic nanoparticles may be passivated by gentle oxidation, surfactants, polymers and precious metals. (wikipedia.org)
In this study, naked or modified MnFe O magnetic nanoparticles (MNPs) were used as supports for the immobilization of laccase from Trametes versicolor. (ibecbarcelona.eu)

for example, tri-sodium citrate [ 7 - 9 ] and sodium borohydride [ 10 ] are being used for the reduction of gold chloride and silver nitrate solutions to form gold and silver nanoparticles, respectively, for decades. (hindawi.com)
Prasad CH, Srinivasulu K, Venkateswarlu P (2015) Catalytic Reduction of 4-Nitrophenol Using Biogenic Silver Nanoparticles Derived from Papaya ( Carica papaya ) Peel extract. (omicsonline.org)
These clearly reveal that the structure of the synthesized silver nanoparticles was face centered cubic. (omicsonline.org)
Silver nanoparticles (NPs) have shown remarkable potential for numerous applications in chemical, electronic , medical, and biological fields due to their distinctive properties, when compared to their bulk counterparts [ 1 - 3 ]. (omicsonline.org)
The present paper describes in situ green immobilization of silver nanoparticles on MnFe2O4@SiO2-Ag nanospheres using Epilobium parviflorum (EP) without using any other toxic chemicals and reducing or stabilizing agents. (tubitak.gov.tr)

Trimethoxysilyl and acrylamide-bisacrylamide polymers have been used for synthesis of enzyme nanoparticles. (mdpi.com)
Recently, work has explored the synthesis and exchange bias effect in these Co core CoO shell nanoparticles with a gold outer shell. (wikipedia.org)
In this review, first various methods used to prepare metal nanoparticles are highlighted and further tannic acid mediated synthesis of metal nanoparticles is emphasized. (hindawi.com)
This developed increased interest of scientific community in the synthesis of metal nanoparticles of defined morphology. (hindawi.com)
Various procedures have been developed for the synthesis of metal nanoparticles and nanomaterials including physical, chemical, and biological methods. (hindawi.com)
Synthesis and surface immobilization of antibacterial hybrid silver-poly(l-lactide) nanoparticles. (mpg.de)
The cobalt incorporated iron oxide nanoparticles could be used for drug delivery application and this simple preparation method could be adopted for the synthesis of other transition metal oxides. (scirp.org)
A facile and green method is described for the synthesis of Silver (Ag) nanoparticles (NPs) from the extract of Papaya Peel as capping and reducing agent. (omicsonline.org)
An efficient reduction of 4-nitrophenol (4-NP) to 4-aminophenol (4-AP) in the presence of Ag NPs and NaBH4 was observed and was found to depend upon the nanoparticle size or the peel extract concentration used for synthesis. (omicsonline.org)
Metal nanoparticles have proven to be the excellent catalysts for inorganic synthesis, pollution treatments and fuel cell, due to their quantum effect, high surface-tovolume ratio and surface energy [ 14 - 16 ]. (omicsonline.org)
Two distinct membrane types were obtained through different methods: 1) a stacked membrane through layer-by-layer assembly for the incorporation of enzymes (catalase and glucose oxidase), providing tunable product yields and 2) Fe/Pd nanoparticles for degradation of pollutants, obtained through an in situ green synthesis. (uky.edu)

In catalytic reactions, such materials either make use of acidic or basic surface sites or act as supports for reduced metal nanoparticles, single-atom catalysts or surface organometallic chemistry (SOMC) species, rather than forming metal-carbon bonds themselves. (nature.com)

4-Mercaptophenyldiphenylphosphine as linker to immobilize Pd onto the surface of magnetite nanoparticles. (upc.edu)
The molecule 4-mercaptophenyldiphenylphosphine (Sdp) has been synthesized for use as a linker to immobilize Pd nanoparticles onto the surface of magnetite nanoparticles. (upc.edu)
NH2- or PPh2-functionalized linkers for the immobilization of palladium on magnetite nanoparticles? (upc.edu)
Immobilization of palladium on magnetite nanoparticles has been carried out with the assistance of two differently functionalized linkers containing phosphino- or amino-terminated groups. (upc.edu)

The surface of a maghemite or magnetite magnetic nanoparticle is relatively inert and does not usually allow strong covalent bonds with functionalization molecules. (wikipedia.org)
In the present study, immobilisation of Candida rugosa (CRL) lipase onto amino-activated mica is performed via covalent bonding (namely Amino-CRL) and the cross-linking of lipases into nano-reactors through physical adsorption (namely NER-CRL). (researchgate.net)
The covalent immobilisation of antibody was achieved through the bonding of the carboxyl group of 11-MUDA and the amino group of the antibody using chemical linkers [1-ethyl-3-(3-dimethylaminopropyl)carbodiimide] and N-hydroxysuccinimide. (amrita.edu)
After covalent immobilization of laccase by glutaraldehyde, the MNPs-CS -lac and MNPs-CS-lac systems showed a good resistance to temperature denaturation and storage stability. (ibecbarcelona.eu)

It has been well documented that the optical, electronic, and catalytic properties of metal nanoparticles are functions of nanoparticle size, shape, and crystal structure. (hindawi.com)

Medieval potteries embellished with glaze or luster display different characteristic colours that result from special optical properties of the glaze which themselves arise due to the random dispersion of metallic spherical nanoparticles within the glaze [ 3 ]. (hindawi.com)
The nanoparticles obtained from Papaya Peel extract were spherical shape with an average diameter of 3-5 nm. (omicsonline.org)

Enzymatic degradation of poly(L-lactide) nanoparticles followed by the release of octenidine and their bactericidal effects. (mpg.de)
Taken together, the results of this study demonstrate that the mechanical properties of the nanoparticle composite membranes are such that minimal mechanical degradation of the nanoparticles will occur during water filtration. (rsc.org)
Although ZVI nanoparticles are promising materials for removing a wide range of contaminants from drinking water, intact nanoparticles and ZVI degradation products could also become contaminants if not properly immobilized or filtered. (rsc.org)

Carbon-carbon bond cleavage reactions, adapted to deconstruct aliphatic hydrocarbon polymers and recover the intrinsic energy and carbon value in plastic waste, have typically been catalysed by metal nanoparticles or air-sensitive organometallics. (nature.com)

Tin-doped indium oxide (ITO) nanoparticles (ca. 20 nm in diameter) were deposited onto electrode surfaces employing a simple immersion, withdrawal and solvent evaporation method. (bath.ac.uk)
The ITO nanoparticle modified electrode surface was impregnated with nanomole amounts of a hydrophobic redox liquid, tert-butylferrocene, and then immersed in the aqueous electrolyte solutions. (bath.ac.uk)
ne value of the voltammetric peak current and the efficiency of the multi-phase electrode process improved proportional to the number of immersion and withdrawal steps from ITO nanoparticles suspension. (bath.ac.uk)
Our novel electrode design using an amphiphilic assembly, which breaks with the common perspective of enzyme immobilization, can maximize the electron transfer at the enzyme/enzyme and enzyme/electrode interfaces as well as realize high operational stability, inducing the formation of a perfect and nanoblended enzyme layer," said author Cheong Hoon Kwon. (phys.org)

Morphological changes resulting from the oxidation of zero valent iron (ZVI) nanoparticles were measured as an assessment of their mechanical robustness in mixed matrix membranes for water treatment applications. (rsc.org)
Such analyses are necessary for nanoparticle bound water filtration membranes to ensure safety and long-term durability. (rsc.org)
11-13 For water treatment applications, ZVI nanoparticles are commonly immobilized in nanoparticle-enhanced membranes, or mixed matrix membranes, which is a novel method for immobilizing nanoparticles in a filtration membrane while simultaneously taking advantage of their reactive treatment capabilities. (rsc.org)
Mixed matrix membranes consist of a traditional ultra- or nanofiltration polymeric membrane in a composite with a second active component, in this case a reactive nanoparticle. (rsc.org)
Macroporous membranes functionalized with ionizable macromolecules provide promising applications in high capacity toxic metal capture, nanoparticle syntheses, and catalysis. (uky.edu)

Nanoparticles with a magnetic core consisting either of elementary Iron or Cobalt with a nonreactive shell made of graphene have been synthesized recently. (wikipedia.org)
The advantages compared to ferrite or elemental nanoparticles are: Higher magnetization Higher stability in acidic and basic solution as well as organic solvents Chemistry on the graphene surface via methods already known for carbon nanotubes Several methods exist for preparing magnetic nanoparticle. (wikipedia.org)
Gold nanoparticles decorated reduced graphene oxide (rGOAu) was used as the nanolabel for the quantitative detection of human immunoglobulin G (HIgG). (amrita.edu)
Comparative study of graphene nanoparticle and multiwall carbon nanotube filled epoxy nanocomposites based on mechanical, thermal and dielectric properties," Composites Part B: Engineering , Vol. 119, 57-66, 2017. (jpier.org)

Biocatalytic kinetic effect of α -chymotrypsin enzyme has been investigated in its free and pretreated forms (it was covered by a very thin, porous polymer layer, called enzyme nanoparticle) as well as its immobilized form into pores of polysulfone/polyamide asymmetric, hydrophilic membrane. (mdpi.com)

However, concerns arise in terms of being able to confidently immobilize nanoparticles in a filtration membrane with long-term resistance to nanoparticle leaching. (rsc.org)

Recent years have witnessed increased interests of scientific community in nanomaterials particularly metal nanoparticles in various areas ranging from material science to nanotechnology [ 1 - 3 ]. (hindawi.com)
Humans have developed and used nanomaterials since a very long time as evidenced by the ruby red colour of some glass which is due to the entrapment of gold nanoparticles in the glass matrix. (hindawi.com)
The attractiveness of such nanomaterials relies on their ability to act as effective immobilization matrices and their intrinsic and unique features as described above. (cdc.gov)

With different kinds of nanoparticles (NPs), paper-based biosensor devices have shown a great potential in the enhancement of sensitivity and specificity of disease diagnosis in developing countries. (cdc.gov)

An in situ method has been developed to fabricate gold nanoparticle (Au NP) films on different substrates, regardless of whether they are hydrophilic or hydrophobic surfaces, including glass, 96-well polystyrene plates, and polydimethylsiloxane (PDMS). (nature.com)
It achieved unprecedented mass loading of hydrophilic enzyme and hydrophobic/conductive metal nanoparticles and greatly increased electron transfer efficiency and current density. (phys.org)
Amphiphilic assembled multilayers composed of glucose oxidases in aqueous media and hydrophobic/conductive nanoparticles in nonpolar media were deposited onto cotton fiber/textile to form the anode, which has notably increased electron transfer efficiency and immobilization stability. (phys.org)

Magnetic nanoparticle clusters are a basis for their further magnetic assembly into magnetic nanochains. (wikipedia.org)
The magnetic moment of ferrite nanoparticles can be greatly increased by controlled clustering of a number of individual superparamagnetic nanoparticles into superparamagnetic nanoparticle clusters, namely magnetic nanobeads. (wikipedia.org)

Attachment of Poly(l-lactide) Nanoparticles to Plasma-Treated Non-Woven Polymer Fabrics Using Inkjet Printing. (mpg.de)
Reactive nanoparticles can remove a wide variety of water contaminants, and a nanoparticle polymer composite membrane could serve as a reactive and physical barrier during water filtration, with the potential to improve overall contaminant removal. (rsc.org)

In this case cysteine emerges as a new and effective medium for immobilizing biomolecules as it provides high efficiency towards immobilization. (niscair.res.in)
The optimised conditions for sugar fatty acid ester syntheses are 48 h at 2:1 of molar ratio of lactose sugar to capric acid at 55 °C. Furthermore, a high operational stability with half-lives of over 13 and 10 runs was achieved for NER-CRL and Amino-CRL, respectively, indicating the efficiency of the immobilisation process. (researchgate.net)
The cathode was formed by sputtering platinum onto the gold nanoparticle-coated cotton fibrils to improve the efficiency of the oxygen reduction reaction. (phys.org)

Appearance of ruby red colour of the colloidal gold solution results as a formation of small gold nanoparticles [ 4 ]. (hindawi.com)
Ostwald in as early as 1917 reported that chloroauric acid solutions can be reduced to gold nanoparticles employing tannin even when tap water is used to prepare aqueous solutions [ 12 ]. (hindawi.com)
A layer-by-layer (LbL) assembly of thiourea (TU) and HAuCl 4 and chemical reduction was utilized to prepare a probe with a different number of layers of TU and gold nanoparticles (AuNPs). (lu.se)
Presented herein is a combined experimental and computational study of the gold nanoparticle (AuNP) inner filter effect on surface enhanced Raman spectroscopic (SERS) measurements. (acs.org)
We present a fluorescent genosensor, exploiting molecular-beacon-functionalized gold nanoparticles, for the identification of human leukocyte antigen (HLA) DQ2 gene, a key genetic factor in coeliac disease. (diva-portal.org)
Optimization of sensor performance was achieved by tuning the composition of the oligonucleotide monolayer immobilized on the gold nanoparticle and the molecular beacon design. (diva-portal.org)
Finally, gold nanoparticles functionalized with two molecular beacons targeting the DQA1*05* and DQB1*02* alleles allowed the low-resolution typing of the DQ2 gene at the nanomolar level. (diva-portal.org)

To harness this unusual reactivity, our catalytic architecture localizes ultrasmall amorphous zirconia nanoparticles between two fused platelets of mesoporous silica. (nature.com)
The synthetic methods that localize metal nanoparticles in a 3D architecture, however, are not readily adapted to SOMC zirconium complexes due to their unwanted reactivity with air and moisture, which forces the final synthetic step to be organometallic site installation. (nature.com)

Ambient air plasma pre-treatment of non-woven fabrics for deposition of antibacterial poly (l-lactide) nanoparticles. (mpg.de)

Owing to the nanoscale dimension (in the range of 1-1000 nm), nanoparticles enjoy a leading edge in the fields of nanoscience and nanotechnology. (hindawi.com)

Aggregation Behavior of Polystyrene-Nanoparticles in Human Blood Serum and its Impact on the in vivo Distribution in Mice. (mpg.de)

This has led to inclination of scientific community towards eco-friendly agents for the reduction of metal salts to form nanoparticles. (hindawi.com)
The formation of α -Fe 2 O 3 nanoparticles was confirmed by X-ray diffraction measurement and reduction in crystallite size was found after cobalt incorporation. (scirp.org)

Glass beads were treated with (3-mercaptopropyl) trimethoxysilane and iron oxide nanoparticles capped with cysteine, to create a layer of cysteine on the surface of glass bead. (niscair.res.in)
Just like non-magnetic oxide nanoparticles, the surface of ferrite nanoparticles is often modified by surfactants, silica, silicones or phosphoric acid derivatives to increase their stability in solution. (wikipedia.org)
In an oxygen environment, Co nanoparticles form an anti-ferromagnetic CoO layer on the surface of the Co nanoparticle. (wikipedia.org)
The nanoscale dimension and high surface area to volume ratio of nanoparticles makes their physicochemical properties quite different from those of the bulk materials [ 3 , 5 ]. (hindawi.com)
Nanoparticles (NPs) have gained significance in medical fields due to their high surface-area-to-volume ratio. (dovepress.com)
A surface morphology of CER will be supplied at a nano scale eligible for a cell receptor "tail" size and will be "packed" from HAP nanoparticles. (impb.ru)
Co-immobilization of the molecular beacon with a spacing oligonucleotide (thiolated ten-thymine oligonucleotide) in the presence of ten-adenine oligonucleotides resulted in a significant increase of the sensor response owing to improved spacing of the molecular beacons and extension of the distance from the nanoparticle surface, which renders them more available for recognition. (diva-portal.org)

Analysis suggested that the oxidized ZVI nanoparticles will experience a 10 −19 N maximum shear force in pore channels, much lower than the imaging forces in AFM, suggesting the mechanical stability of the particles during water remediation. (rsc.org)
Additional quartz crystal microbalance experiments were performed to confirm the mechanical stability of the oxidized iron nanoparticles in the flow environments of ultrafiltration. (rsc.org)

Protein Corona of Nanoparticles: Distinct Proteins Regulate the Cellular Uptake. (mpg.de)

The significance of nanomaterial post-exposure responses in Daphnia magna standard acute immobilisation assay : example with testing TiO2 nanoparticles. (bionanoteam.com)
The significance of nanomaterial post-exposure responses in Daphnia magna standard acute immobilisation assay : example with testing TiO 2 nanoparticles. (bionanoteam.com)
1-7 One promising nanomaterial is zero-valent iron (ZVI) nanoparticles, which have been previously studied as active systems for removal of contaminants from water due to their reactive properties. (rsc.org)

The study displays the immobilization of papain on cysteine functionalized iron oxide nanoparticle coated glass beads. (niscair.res.in)
The average size of cysteine capped iron oxide nanoparticles were found to be 50 nm. (niscair.res.in)
The binding of cysteine through the iron oxide nanoparticles was validated by Fourier transform infra-red spectroscopy. (niscair.res.in)
This also implies that for the same moment, metallic nanoparticles can be made smaller than their oxide counterparts. (wikipedia.org)

Furthermore, the mussel-inspired electropolymerization strategy and the fast EPD-reduced nanoparticle decorating process presented herein can be readily extended to various functional substrates, such as conductive glass, metallic oxides, and semiconductors. (ewha.ac.kr)
On the other hand, metallic nanoparticles have the great disadvantage of being pyrophoric and reactive to oxidizing agents to various degrees. (wikipedia.org)

Each nanoparticle subsequently produces an electronic signal that enables precise measurement of their electric charge in low concentrations and small volumes. (acs.org)

Metal nanoparticles harbour numerous exceptional physiochemical properties absolutely different from those of bulk metal as a function of their extremely small size and large superficial area to volume. (hindawi.com)
Naked metal nanoparticles are synthesized by various physical and chemical methods. (hindawi.com)
Here we show that Earth-abundant, non-reducible zirconia catalyses the hydrogenolysis of polyolefins with activity rivalling that of precious metal nanoparticles. (nature.com)

CONCLUSION: There is a strong size-selective difference in particle immobilization. (cdc.gov)

The aim of this study was to investigate the use of chlorhexidine (CHX) hexametaphosphate (HMP) nanoparticles (NPs) with a total CHX concentration equivalent to 5 mM as a coating for dental implants. (springer.com)
Our goal in the present study nanoparticles (NPs) is associated with adverse opposite initial events of AM-particle interac- was to determine the long-term alveolar reten- cardiovascular effects in susceptible parts of tion lead to the same pulmonary clearance tion of these NPs and to compare our results populations (Ibald-Mulli et al. (cdc.gov)

While nanoparticles are smaller than 1 micrometer in diameter (typically 1-100 nanometers), the larger microbeads are 0.5-500 micrometer in diameter. (wikipedia.org)

Antimicrobial nanoparticles (NPs) offer a method for imparting antimicrobial properties to implant surfaces. (springer.com)

Stabilization of Nanoparticles Synthesized by Miniemulsion Polymerization Using "Green" Amino-Acid Based Surfactants. (mpg.de)

The standard acute immobilisation assay with daphnids was modified by prolonging the exposure period and by measuring additional endpoints. (bionanoteam.com)
Using quartz crystal microbalance, atomic force microscopy, and modeling techniques, we demonstrate that zero valent iron nanoparticles become oxidized after exposure to water yet remain mechanically robust at flow rates comparable to those used in filtration applications. (rsc.org)

Paclitaxel-loaded polyphosphate nanoparticles: a potential strategy for bone cancer treatment. (mpg.de)
The project will develop a percolated nanostructured electrically polarized ceramics (CER) fabricated from hydroxylapatite (HAP) to improve quality of bone eligible bioimplants, work out new material for immobilization of microorganisms for their further use to product of various biologically active compounds (BAC) and purify the environment. (impb.ru)

In support of this idea, a mesoporous silica shell/platinum catalyst/silica core (mSiO 2 /Pt/SiO 2 ) 3D architecture that isolates small Pt nanoparticles at the bottom of mesoporous wells provides high activity and long catalyst lifetimes in polyolefin hydrogenolysis 16 , 17 . (nature.com)

Owing to the abundant catechol and amine groups in the PDA layer, uniform Pt nanoparticles (NPs) are deposited onto the TiO 2 NTAs and can effectively prevent the recombination of electron-hole pairs generated from photo-electrocatalysis and transfer the captured electrons to participate in the photo-electrocatalytic reaction process. (ewha.ac.kr)
Owing to the abundant catechol and amine groups in the PDA layer, uniform Pt nanoparticles (NPs) are deposited onto the TiO2 NTAs and can effectively prevent the recombination of electron-hole pairs generated from photo-electrocatalysis and transfer the captured electrons to participate in the photo-electrocatalytic reaction process. (ewha.ac.kr)

Anatomy8

Organisms8

Diseases9

Chemicals and Drugs113

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Phenomena and Processes35

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Technology, Industry, Agriculture45

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Magnetic nanoparticles7

Silver Nanoparticles5

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