A review of current coupling agents for modification of metal oxide nanoparticles

Mallakpour, Shadpour; Madani, Maryam

doi:10.1016/j.porgcoat.2015.05.023

Cited by 253 publications

(122 citation statements)

References 118 publications

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“…Therefore, surface modification is expected to decrease aggregation and improve dispersibi-Soleimani and Zamani: Surface Modification of Alumina Nanoparticles: ... lity. [37][38][39] Thus, to studying dispersibility, SEM images of alumina nanoparticles before and after modification by oleic acid and TMVS have been recorded which are shown in Fig. 3.…”

Section: Sem Images and Edx Analysismentioning

confidence: 99%

Surface Modification of Alumina Nanoparticles: A Dispersion Study in Organic Media

Soleimani

Zamani

2017

ACSi

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The alumina nanoparticles (NPs) have been synthesized from reaction between alum with ammonia and then calcined the precipitate at 1200 °C for 4 h. Its surface was modified by oleic acid (OA) and trimethoxyvinylsilane (TMVS) in o-xylene at 50 °C. The alumina NPs and its modified were characterized by XRD, FT-IR, SEM, EDX and TGA. The TGA analysis indicated that the grafting amount of OA and TMVS were 10.5 and 8.0% respectively. The dispersion of modified NPs was determined in monomers such as methyl methacrylate (MMA), butyl acrylate (BuA) and styrene (St) and in solvents such as ethanol, hexane and acetone. The experimental results showed that the highest dispersion was happened NPs modified by oleic acid in n-hexane, while the highest dispersion was observed NPs modified by TMVS in acetone. The results indicate that NPs modified by oleic acid formed a stable dispersion in MMA and BuA. The highest amount of dispersion happened NPs modified by oleic acid in MMA and BuA in initial weight of 5 and 2.5% respectively, while stable dispersion is formed in styrene when TMVS is used as modifier. The highest amount of dispersion was happened NPs modified by TMVS in styrene in initial weight of 2.5%.

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Section: Sem Images and Edx Analysismentioning

confidence: 99%

Surface Modification of Alumina Nanoparticles: A Dispersion Study in Organic Media

Soleimani

Zamani

2017

ACSi

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“…[313] They provide more stronger bonds compared to carboxylic acid molecules through creating FeOP bond, which equip iron oxide MNPs with coatings having good stability over several weeks at neutral pH. [314] …”

Section: Small Organic Molecules (Carboxylates and Organophosphorus Mmentioning

confidence: 99%

Synthesis, Functionalization, and Design of Magnetic Nanoparticles for Theranostic Applications

Mosayebi

Kiyasatfar

Laurent

2017

Adv Healthcare Materials

204

171

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In order to translate nanotechnology into medical practice, magnetic nanoparticles (MNPs) have been presented as a class of non‐invasive nanomaterials for numerous biomedical applications. In particular, MNPs have opened a door for simultaneous diagnosis and brisk treatment of diseases in the form of theranostic agents. This review highlights the recent advances in preparation and utilization of MNPs from the synthesis and functionalization steps to the final design consideration in evading the body immune system for therapeutic and diagnostic applications with addressing the most recent examples of the literature in each section. This study provides a conceptual framework of a wide range of synthetic routes classified mainly as wet chemistry, state‐of‐the‐art microfluidic reactors, and biogenic routes, along with the most popular coating materials to stabilize resultant MNPs. Additionally, key aspects of prolonging the half‐life of MNPs via overcoming the sequential biological barriers are covered through unraveling the biophysical interactions at the bio–nano interface and giving a set of criteria to efficiently modulate MNPs' physicochemical properties. Furthermore, concepts of passive and active targeting for successful cell internalization, by respectively exploiting the unique properties of cancers and novel targeting ligands are described in detail. Finally, this study extensively covers the recent developments in magnetic drug targeting and hyperthermia as therapeutic applications of MNPs. In addition, multi‐modal imaging via fusion of magnetic resonance imaging, and also innovative magnetic particle imaging with other imaging techniques for early diagnosis of diseases are extensively provided.

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“…To obtain an efficient magnetic sorbent, the surface modification of magnetic materials have been frequently developed to fabricate different organic or inorganic shell on the magnetic substrates [15]. A variety of methods has been utilized extensively to modify the surface of magnetic nanoparticles for effective and selective interaction with target analyte [16]. Ligand modification of the surfaces can introduce a suitable substrate for interaction with organic compounds or metal ions.…”

Section: Introductionmentioning

confidence: 99%

Magnetite nanoparticles surface-modified with a zinc(II)-carboxylate Schiff base ligand as a sorbent for solid-phase extraction of organochlorine pesticides from seawater

2016

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Magnetite nanoparticles were surface-modified with mercaptoacetic acid (MAA), complexed with Zn(II), and then treated with the dual Schiff base (referred to as imine-based ligand; IBL; obtained by reaction of paminobenzoic acid and 2,3-butanedione) to give particles with an architecture of type Fe 3 O 4 @MAA@IBL. These are shown to be viable sorbents for magnetic solid phase extraction of organochlorine pesticides (OCPs) from seawater samples. Efficient extraction of the OCPs probably is due to lone pair-π, π-complexation and π-interactions. The sorbent was characterized by transmission electron microscopy, scanning electron microscopy, FT-IR and energy-dispersive X-ray spectroscopy. The effects of the volumes of sample, sorbent dosage and eluent, adsorption and desorption times, and the salinity of the sample on the extraction efficiencies were optimized. The OCPs (heptachlor, aldrin, dieldrin, p,p'-DDE and p,p'-DDT) were quantified by gas chromatography with microelectron capture detection. Under optimal conditions, the limit of detections range was between 1.0 and 1.9 ng L −1 . The enrichment factors are between 84.1 and 99.9 %. The sorbent was applied to the rapid extraction of trace quantities of OCPs from seawater samples and gave good relative recoveries (78 to 108 %) and relative standard deviations (<8.3 %).

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A review of current coupling agents for modification of metal oxide nanoparticles

Cited by 253 publications

References 118 publications

Surface Modification of Alumina Nanoparticles: A Dispersion Study in Organic Media

Surface Modification of Alumina Nanoparticles: A Dispersion Study in Organic Media

Synthesis, Functionalization, and Design of Magnetic Nanoparticles for Theranostic Applications

Magnetite nanoparticles surface-modified with a zinc(II)-carboxylate Schiff base ligand as a sorbent for solid-phase extraction of organochlorine pesticides from seawater

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