Nanoparticles and core–shell nanocomposite based new generation water remediation materials and analytical techniques: A review

Thatai, Sheenam; Khurana, Parul; Boken, Jyoti; Prasad, Surendra; Kumar, Dinesh

doi:10.1016/j.microc.2014.04.001

Cited by 111 publications

(47 citation statements)

References 262 publications

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“…With the rapid development of industries, such as metal plating facilities, mining operations, fertilizer industries, tanneries, batteries, paper industries and pesticides, etc., heavy metal containing wastewater are increasingly directly or indirectly discharged into the environment [95]. Thus, due to the adverse effects on environmental and human health caused by toxic metal ions, some technologies are applied for the decontamination of heavy metals such as reverse osmosis, precipitation and adsorption.…”

Section: Removal Of Heavy Metals By Fe 3 O 4 @C Core-shell Nanoparticlesmentioning

confidence: 99%

Synthesis and Potential Adsorption of Fe3O4@C Core-Shell Nanoparticles for to Removal of Pollutants in Aqueous Solutions: A Brief Review.

Mm¹,

Macuvele²,

Müller³

et al. 2017

J Adv Chem Eng

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Journal of Advanced Chemical EngineeringLima et al., J Adv Chem Eng 2017, 7:1 DOI: 10.4172/2090 Volume AbstractCore-shell Fe 3 O 4 @C nanoparticles consist of a magnetic core and carbon coating, and exhibit high adsorptive capacity, easy magnetic separation and reusability. Due to these properties, core-shell Fe 3 O 4 @C nanoparticles have great potential application in adsorption, separation and wastewater treatment. Magnetic separation based on the super paramagnetic Fe 3 O 4 has received considerable attention and is widely used for the removal of dye, oil pharmaceuticals and metals from water due to its high efficiency and economic viability. Therefore, the main characteristics of the core-shell Fe 3 O 4 @C nanoparticles, the different types of synthesis, as well as the main applications for the removal of water pollutants were reviewed. In this brief review, an overview of the basic properties of the Fe 3 O 4 @C core-shell nanoparticles are given, and the most important and more frequently used methods for the synthesis of Fe 3 O 4 @C core-shell nanoparticles have been summarized along with the description of its adsorbent application potential.

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Section: Removal Of Heavy Metals By Fe 3 O 4 @C Core-shell Nanoparticlesmentioning

confidence: 99%

Synthesis and Potential Adsorption of Fe3O4@C Core-Shell Nanoparticles for to Removal of Pollutants in Aqueous Solutions: A Brief Review.

Mm¹,

Macuvele²,

Müller³

et al. 2017

J Adv Chem Eng

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show abstract

“…There exists another method comprising of spray pyrolysis for which an average grain size of 100 nm of silver nano powder was found in the synthesis. Of many synthesis processes, electrolysis and pyrolysis methods are judged to be eco-friendly as there is no toxic or hazardous reducing agents involved in the production of these NPs [52,53].…”

Section: Electrolysis and Pyrolysis Synthesismentioning

confidence: 99%

A review on preparation methods of SNPs and their biomedical applications

Ut¹,

Mk²,

Gvsn³

2017

Front Nanosci Nanotech

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Researchers have identified Silver Nano Particles (SNPs) as a key area of interest because of their unique shape and size dependent biomedical properties. They have discovered and invented a variety of methods for the synthesis of SNPs such as microwave irradiation techniques, laser ablation synthesis, biological synthesis, photochemical synthesis and chemical synthesis etc. In this review paper we overview the preparation of SNPs through various synthesis methods and also their applications in the bio-medical field. The main aim of this paper is to keep up to date with the myriad ongoing synthesis methods of synthesis of NPs and also examine their applications especially in the field of medicine. Silver Nano Particles (SNPs)Silver (Ag) is a white colored, lustrous looking, physically soft, transition element metal having high thermal and electrical conductivity. It has been used by humans earlier than the recorded history due to its ornamental, medical and therapeutic benefits even before realizing that microbes are the causative agents of infections. It is used by people in many forms such as solutions, foils, coins, vessels, sutures, and in colloids such as lotions, ointments etc. It is one of the most prominent therapeutic elemental agent in medicine for surgical infections and infectious diseases. The tangible advantages of silver have a bigger weightage than the intangible risk factors [1].Nanoscience is a novel multidisciplinary subject that depends on the basic physical and chemical properties displayed by nano level objects [2,3]. Nanoparticles have been shown to display amazing electromagnetic, surface optical and chemically catalytic characteristics than the macro bulk material owing to their extremely low volume to surface area ratio [4,5]. Metal nanoparticles such as silver show different colors due to their Surface Plasmon Resonance (SPR) phenomenon. It is a group oscillatory behavior of the free electrons of the metal nanoparticles having the same frequency of the light wave interactions, resulting in resonance, causing the SPR band to form in the infrared and visible region [6]. Nanoparticles, especially the metallic ones, whose production can be done through various methods, the usual ones being physical and chemical methods. The above-mentioned methods produce high purity, well-defined nanoparticles, but the reagents used in the synthesis are hazardous, energy consuming, expensive, toxic and not suitable for physiological or ecological applications. Research regarding the synthesis of metal nanoparticles was extensively covered in the past three decades, but research of nanosynthesis , based on plant extracts, bloomed only in the last ten years [7][8][9][10][11][12][13].Silver nanoparticles are finding themselves in the limelight due to their biological, chemical and physical properties that contributes to the bactericidal and fungicidal effects, catalytic activity and finds applications in nanobiotechnological research [14,15]. Doctors are beginning to use them in wound dressings as an...

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“…Nanomaterials such as metal NPs, magnetic NPs, carbon nanomaterials and semiconductor nanomaterials have been used for the removal of Hg 2+ from aqueous solution [124,125]. For example, Ojea-Jimenez et al [126] reported that citrate-coated Au NPs can remove Hg 2+ from Milli-Q water and river water.…”

Section: Science China Materialsmentioning

confidence: 99%

Recent developments on nanomaterials-based optical sensors for Hg2+ detection

Duan

Zhan

2015

Sci. China Mater.

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Mercuric ion (Hg 2+ ), released from both natural and industrial sources, has severe adverse effects on human health and the environment even at very low concentrations. It is very important to develop a rapid and economical method for the detection of Hg 2+ with high sensitivity and selectivity. Nanomaterials with unique size and shape-dependent optical properties are attractive sensing materials. The application of nanomaterials to design optical sensors for Hg 2+ provides a powerful method for the trace detection of Hg 2+ in the environment, because these optical sensors are simple, rapidly responsive, cost-effective and highly sensitive. This review summarizes the recent advances on the development of optical assays for Hg 2+ in aqueous solution by using functionalized nanomaterials (including noble metal nanoparticles, fluorescent metal nanoclusters, semiconductor quantum dots and carbon nanodots). Detection strategies based on the Hg 2+ -induced changes in spectral absorbance, fluorescence intensity and surface-enhanced Raman scattering signals were described. And the design principles for each optical assay were presented. In addition, the future challenge and the prospect of the development of nanomaterial optical sensors for Hg 2+ detection were also discussed.

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Nanoparticles and core–shell nanocomposite based new generation water remediation materials and analytical techniques: A review

Cited by 111 publications

References 262 publications

Synthesis and Potential Adsorption of Fe3O4@C Core-Shell Nanoparticles for to Removal of Pollutants in Aqueous Solutions: A Brief Review.

Synthesis and Potential Adsorption of Fe3O4@C Core-Shell Nanoparticles for to Removal of Pollutants in Aqueous Solutions: A Brief Review.

A review on preparation methods of SNPs and their biomedical applications

Recent developments on nanomaterials-based optical sensors for Hg2+ detection

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