A magnetized graphene oxide modified with 2-mercaptobenzothiazole as a selective nanosorbent for magnetic solid phase extraction of gold(III), palladium(II) and silver(I)

Neyestani, Mahmoud Reza; Shemirani, Farzaneh; Mozaffari, Shahla; Alvand, Mahrouz

doi:10.1007/s00604-017-2299-8

Cited by 43 publications

(13 citation statements)

References 33 publications

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“…For this purpose, graphene oxide was treated with MnFe 2 O 4 nanoparticles to give the magnetic mag-GO sorbent, followed by modification with sodium dodecyl sulfate to create admicelles on the surface of the mag-GO. Finally, 2-mercaptobenzothiazole was immobilized on the sorbent surface as the metal chelating agent in order to improve the selectivity towards the platinum group metals (PGMs) [92]. Magnetic GO modified with 2-mercaptobenzothiazole (MBT) has been also used for the MSPE of Cd(II), Cu(II), and Pb(II) from water and vegetable samples prior to their determination by FAAS [93].…”

Section: Multielement Extraction With Graphene-oxide-derived Materialsmentioning

confidence: 99%

Sample Preparation Using Graphene-Oxide-Derived Nanomaterials for the Extraction of Metals

et al. 2020

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Graphene oxide is a compound with a form similar to graphene, composed of carbon atoms in a sp2 single-atom layer of a hybrid connection. Due to its significant surface area and its good mechanical and thermal stability, graphene oxide has a plethora of applications in various scientific fields including heterogenous catalysis, gas storage, environmental remediation, etc. In analytical chemistry, graphene oxide has been successfully employed for the extraction and preconcentration of organic compounds, metal ions, and proteins. Since graphene oxide sheets are negatively charged in aqueous solutions, the material and its derivatives are ideal sorbents to bind with metal ions. To date, various graphene oxide nanocomposites have been successfully synthesized and evaluated for the extraction and preconcentration of metal ions from biological, environmental, agricultural, and food samples. In this review article, we aim to discuss the application of graphene oxide and functionalized graphene oxide nanocomposites for the extraction of metal ions prior to their determination via an instrumental analytical technique. Applications of ionic liquids and deep eutectic solvents for the modification of graphene oxide and its functionalized derivatives are also discussed.

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Section: Multielement Extraction With Graphene-oxide-derived Materialsmentioning

confidence: 99%

Sample Preparation Using Graphene-Oxide-Derived Nanomaterials for the Extraction of Metals

et al. 2020

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“…To assess the applicability of the MSPE method developed by Neyestani et al [ 58 ] to solid samples with high concentrations of many elements, real ore samples were analyzed. The samples were digested using a combination of four acids (HNO 3 , HF, HClO 4 , and HCl) and used for the separation/preconcentration of Ag followed by ICP-OES detection.…”

Section: Magnetic Solid Phase Extraction Used For the Separation Omentioning

confidence: 99%

Magnetic Solid Phase Extraction as a Promising Technique for Fast Separation of Metallic Nanoparticles and Their Ionic Species: A Review of Recent Advances

Hagarová

2020

Journal of Analytical Methods in Chemistry

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The widespread use of silver nanoparticles (AgNPs) and gold nanoparticles (AuNPs) in a wide variety of industrial as well as medical sectors is indisputable. This leads to a new concern about their presence in various environmental compartments. Since their negative effect and potential toxicity impact have been confirmed, analytical chemists focus on the development of different procedures for their reliable detection, identification, characterization, and quantification, not only in homogenous and simple matrices but also in complex environmental matrices. However, nanoparticles and their ionic species can coexist and their toxicity may differ; therefore, novel analytical approaches are necessary to monitor not only the nanoparticles but also their ionic species. The aim of this article is to bring a review of recent works where magnetic solid-phase extraction (MSPE) procedures in connection with spectrometric methods were used for separation/preconcentration and quantification of (1) silver and gold ions in various environmental samples, (2) AgNPs and AuNPs in real water samples in the presence of various coexisting ions, and (3) both species (it means Ag ions and AgNPs; Au ions and AuNPs) in real water samples. The results presented herein show the great analytical potential of MSPE procedures in connection with spectrometric methods used in these fields and can be helpful in guiding analytical chemists who aim to work on this subject.

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“…The most significant element to achieve sensitivity and selectivity in MSPE is the choice of the adsorbent material to be used [13]. A competitive adsorbent material is characterized by good selectivity, high specific area, suitable physical and chemical stability, and an improved extraction efficiency.…”

Section: Magnetic Solid Phase Extraction (Mspe)mentioning

confidence: 99%

Magnetic Adsorbents for the Recovery of Precious Metals from Leach Solutions and Wastewater

Aghaei

Alorro

Encila

et al. 2017

Metals

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Precious metals which include the platinum group, gold, and silver, play indispensable roles in high technology industries of the modern world due to their outstanding physical and chemical properties. As a result of diminishing availability of mineral sources, increasing demand, and environmental concerns, the recovery of precious metals from both leaching and industrial waste solutions is becoming a very important technology. Magnetic solid phase extraction (MSPE) is a technique that has received substantial consideration in the separation and recovery of precious metals because of the many advantages it offers compared to conventional methods. This technique is based on the extraction of different analytes from solutions using solid adsorbents with magnetic properties. This review focuses on different types of magnetic adsorbents, the main procedures used for synthesis, characterization and their application in precious metals recovery based on recently published literatures.

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A magnetized graphene oxide modified with 2-mercaptobenzothiazole as a selective nanosorbent for magnetic solid phase extraction of gold(III), palladium(II) and silver(I)

Cited by 43 publications

References 33 publications

Sample Preparation Using Graphene-Oxide-Derived Nanomaterials for the Extraction of Metals

Sample Preparation Using Graphene-Oxide-Derived Nanomaterials for the Extraction of Metals

Magnetic Solid Phase Extraction as a Promising Technique for Fast Separation of Metallic Nanoparticles and Their Ionic Species: A Review of Recent Advances

Magnetic Adsorbents for the Recovery of Precious Metals from Leach Solutions and Wastewater

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