Application of thiol-functionalized mesoporous silica-coated magnetite nanoparticles for the adsorption of heavy metals

Tahergorabi, Mahsa; Esrafili, Ali; Kermani, Majid; Shirzad‐Siboni, Mehdi

doi:10.1080/19443994.2015.1106351

Cited by 22 publications

(6 citation statements)

References 41 publications

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“…Among the various materials used for chromium removal, nanoparticles have been the most common, either using just the core nanoparticles [9,[40][41][42][43][44][45][46], nanoparticles with functionalization [35,[47][48][49], or modified nanoparticles incorporated on substrates [36,50]. Other type of materials have been used, such as nanocomposites [37,51,52], nanofibers [38] and carbon nanotubes [39].…”

Section: Type Of Materialsmentioning

confidence: 99%

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Chromium removal from contaminated waters using nanomaterials – A review

Almeida

Cardoso

Tavares

et al. 2019

TrAC Trends in Analytical Chemistry

119

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Current environmental policies aim to reduce the levels of toxic substances in aquatic ecosystems and to promote the water reuse after appropriate treatment of wastewater.Chromium is a hazard element present in effluents of various industries that should be reduced to achieve the objectives of those policies. Most of the results reported in the literature concern the use of nanomaterials for chromium sorption dissolved either in synthetic or mono-elemental spiked solutions. The present work reviews the results of research undertaken in the last decade on the application of various nanomaterials to decrease chromium concentrations in contaminated waters. Major factors influencing the removal efficiency were examined. Because most of the published studies are based on simple experiments with deionised water and mono contamination further studies are suggested focused on effects of natural and artificial chelators, interferences of other trace elements competing with chromium sorption, reduction the sorbent mass per water volume.

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Section: Type Of Materialsmentioning

confidence: 99%

“…Chromium speciation. Cr(VI) have been the most investigated species, although some researchers have run experiments with Cr(III) forms [38,47,48,51,71]. Others studies used with both Cr(III) and Cr(VI) [9,42,69,77,78].…”

Section: Amount Of Sorbentmentioning

confidence: 99%

Chromium removal from contaminated waters using nanomaterials – A review

Almeida

Cardoso

Tavares

et al. 2019

TrAC Trends in Analytical Chemistry

119

View full text Add to dashboard Cite

show abstract

“…This implied that the adsorption process was energetically stable. [81][82][83][84] The molar entropy of adsorption is…”

Section: Adsorption Isothermsmentioning

confidence: 99%

Silica based inorganic–organic hybrid materials for the adsorptive removal of chromium

et al. 2018

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“…The nanosorbent showed high capacity and selectivity for Cu 2+ due to restriction in size, shape and spatial arrangement in active sites, because in those conditions the ionic radius of both Zn 2+ (74 pm) and Ni 2+ (72 pm) are larger than that of Cu 2+ (69 pm). Also thiol‐functionalization of the surface confers to the SiO 2 ‐coated Fe 3 O 4 particles the ability to coordinate heavy metal pollutants such as Ni 2+ , Cu 2+ , Hg 2+ and Cr 3+ , , …”

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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Application of thiol-functionalized mesoporous silica-coated magnetite nanoparticles for the adsorption of heavy metals

Cited by 22 publications

References 41 publications

Chromium removal from contaminated waters using nanomaterials – A review

Chromium removal from contaminated waters using nanomaterials – A review

Silica based inorganic–organic hybrid materials for the adsorptive removal of chromium

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

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