Graphene Oxide Based Magnetic Nanocomposites with Polymers as Effective Bisphenol–A Nanoadsorbents

Rekos, Kyriazis; Kampouraki, Zoi-Christina; Sarafidis, C.; Samanidou, Victoria; Deliyanni, Eleni A.

doi:10.3390/ma12121987

Cited by 32 publications

(15 citation statements)

References 74 publications

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“…The software of the computer that was used was Class-M10A by Shimadzu (Kyoto, Japan). The synthesis of powdered magnetic graphene oxide (mGO), powdered magnetic graphene oxide with polystyrene (mGO-PS), powdered magnetic activated carbon (BAX), powdered magnetic graphene oxide with polyaniline (mGO-PANI) and powdered graphene oxide with magnetic chitosan (GO-Chm) was performed according to references [16][17][18][19][20]. These five nanocomposites were studied as a possible type of adsorbent for the extraction of ALP and FLT from surface water samples.…”

Section: Instrumentaion and Chromatographic Conditionsmentioning

confidence: 99%

Synthesis and Application of the Magnetic Nanocomposite GO-Chm for the Extraction of Benzodiazepines from Surface Water Samples Prior to HPLC-PDA Analysis

2021

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Nowadays, the interest in preparing new, cheap and simple adsorbents that are used in sample preparation is on the rise. Graphene oxide (GO) nanomaterials and nanocomposites have become increasingly popular due to the novel methods of syntheses that have been published. Owing to their vast specific surface area and their π-delocalized electron system they possess, they are appropriate for the adsorption of a variety of aromatic organic compounds, being utilized either as adsorbents in analytical methods or as filter materials for the removal of pollutants in water. Pharmaceutical compounds, such as benzodiazepines, end up in surface waters caused by consumption or their disposal through sewage, thus becoming pollutants. In the present study, an analytical method has been developed and validated for the determination of two model-analytes of benzodiazepines by HPLC-DAD and their sample preparation protocol which consists of the Stir bar magnetic solid phase extraction (SB-MSPE) method, evaluating therefore the nanocomposite material as a decent adsorbent. The separation took place with the usage of an analytical column C18 RP-HPLC in 10 min. For the alprazolam (ALP) and the flunitrazepam (FLT), the LODs and LOQs were 3 ng/mL and 10 ng/mL, respectively, while the relative recoveries ranged between 93.6–112.9% and the RSDs were 1.11–9.50%. Finally, the material was examined for its reusability and was found that it can be used for over eight cycles of extraction/elution.

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Section: Instrumentaion and Chromatographic Conditionsmentioning

confidence: 99%

Synthesis and Application of the Magnetic Nanocomposite GO-Chm for the Extraction of Benzodiazepines from Surface Water Samples Prior to HPLC-PDA Analysis

2021

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“…Em um estudo recente, Rekos et al (2019) sintetizaram três nanocompósitos magnéticos para remoção de BPA. Diferentes parâmetros foram avaliados para determinar a eficiência do processo, tais como, pH da solução (3)(4)(5)(6)(7)(8)(9), força iônica (NaCl 0,1-1 mol L -1 ) e tempo de contato (0-180 minutos).…”

Section: Adsorção De Compostos Orgânicos Em Nanocompósitos Magnéticos Baseados Em óXido De Grafenounclassified

Simulação Da Concentração De Matéria Orgânica Em Canais Urbanos: Estudo De Caso Canal Do Prado, Campina Grandepb

Sasaki¹,

Brito²,

Neto³

et al. 2021

Meio Ambiente E Sustentabilidade: Pesquisa, Reflexões E Diálogos Emergentes

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Meio ambiente e sustentabilidade: pesquisa, reflexões e diálogos emergentes está licenciado sob CC BY 4.0.Esta licença exige que as reutilizações deem crédito ao criador. Ele permite que os reutilizadores distribuam, remixem, adaptem e construam o material em qualquer meio ou formato, mesmo para fins comerciais. O conteúdo da obra e seus dados em sua forma, correção e confiabilidade são de responsabilidade exclusiva dos autores, não representando a posição oficial da Editora Amplla. É permitido o download da obra e o compartilhamento desde que sejam atribuídos créditos aos autores. Todos os direitos para esta edição foram cedidos à Editora Amplla.

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“…Moreover, GO can form magnetic nanocomposites with Fe 3 O 4 nanoparticles through electrostatic interactions between the negatively charged GO nanosheets and the positively charged surface of magnetite. The magnetic nanocomposites combine the high adsorption efficiency of GO and the convenience of magnetic separation of Fe 3 O 4 nanoparticles [37][38][39][40][41][42][43][44].…”

Section: Introductionmentioning

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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Graphene Oxide Based Magnetic Nanocomposites with Polymers as Effective Bisphenol–A Nanoadsorbents

Cited by 32 publications

References 74 publications

Synthesis and Application of the Magnetic Nanocomposite GO-Chm for the Extraction of Benzodiazepines from Surface Water Samples Prior to HPLC-PDA Analysis

Synthesis and Application of the Magnetic Nanocomposite GO-Chm for the Extraction of Benzodiazepines from Surface Water Samples Prior to HPLC-PDA Analysis

Simulação Da Concentração De Matéria Orgânica Em Canais Urbanos: Estudo De Caso Canal Do Prado, Campina Grandepb

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

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