Marcin Purchała

Military University of Technology in Warsaw

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H. Grajek

Military University of Technology in Warsaw

Tomasz Wawer

Military University of Technology in Warsaw

Zygfryd Witkiewicz

Military University of Technology in Warsaw

J. Jonik

Military University of Technology in Warsaw

Piotr Jabłoński

AGH University of Krakow

Leszek Rutkowski

Polish Academy of Sciences

ŁF

Łukasz Farczak

Instytut Chemii i Techniki Jądrowej

Andrzej Klimek

Lodz University of Technology

Kinga Mikołajczyk

Lodz University of Technology

Aleksandra Jastrzębska

Lodz University of Technology

Cooperative Institutions

Military University of Technology in Warsaw

Lodz University of Technology

Centrum Badań i Innowacji Pro-Akademia

University of Łódź

Materials Science & Engineering

Instytut Chemii i Techniki Jądrowej

AGH University of Krakow

Warsaw University of Life Sciences

Jagiellonian University

Poznań University of Technology

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The optimisation of chromatographic conditions for the determination of acceptor-donor properties of graphene oxide and reduced graphene oxide

Acta Innovations (2018)

H. Grajek Justyna Janik Leszek Rutkowski Marcin Purchała Tomasz Wawer

The oxidised and reduced graphene samples (having different surface functionalities) were studied by inverse gas chromatography to characterise their acceptor-donor properties. The DN values denoting the donor number in the Gutmann scale and the AN* values denoting the acceptor number in the Riddle-Fowkes scale have been chosen in the estimation of the electron-acceptor parameter KA and electron-donor parameter KD values

Electron acceptor

Acceptor

Inverse gas chromatography

Electron donor

10.32933/actainnovations.26.1

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Citations (3)

Chromatographic determination of the free energy of adsorption and absorption characteristic of 4-(trans-4′-n-alkylcyclohexyl) benzoates

Journal of Chromatography A (2020)

Marcin Purchała H. Grajek Zygfryd Witkiewicz Mateusz Szala Kajetan Kalus

Benzoates

10.1016/j.chroma.2020.461120

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Charakterystyka właściwości adsorpcyjnych i energetycznych utlenionego i zredukowanego grafenu

H. Grajek Łukasz Farczak Tomasz Wawer Piotr Jabłoński Marcin Purchała

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Charakterystyka właściwości adsorpcyjnych i energetycznych utlenionego i zredukowanego grafenuThe characteristic of the adsorption and energetic properties of the oxidised and reduced graphene

Aparatura Badawcza i Dydaktyczna (2015)

H. Grajek Łukasz Farczak Tomasz Wawer Piotr Jabłoński Marcin Purchała

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Citations (2)

Metody syntez i badania właściwości grafenu

J. Jonik Marcin Purchała H. Grajek

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Citations (1)

Liquid Crystals as Stationary Phases in Chromatography

Chromatographia (2016)

H. Grajek Zygfryd Witkiewicz Marcin Purchała W. Drzewiński

10.1007/s10337-016-3154-5

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Citations (26)

Chromatographic study of electron acceptor–donor properties of 4-(trans-4’-n-alkylcyclohexyl) benzoates

Journal of Chromatography A (2021)

H. Grajek Marcin Purchała

Benzoates

Acceptor

Electron acceptor

10.1016/j.chroma.2021.461994

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Applications of Graphene and Its Derivatives in Chemical Analysis

Critical Reviews in Analytical Chemistry (2019)

H. Grajek J. Jonik Zygfryd Witkiewicz Tomasz Wawer Marcin Purchała

In this review, the applications of graphene and its derivatives in the chemical analysis have been described. The properties of graphene materials which are essential for their use in chemical and biochemical analysis are characterized. The materials are used in sensors and biosensors, in electrochemistry, in chromatography and in the sample preparation techniques. Chemical and electrochemical sensors containing graphene materials are useful devices for detecting some chemical and biochemical compounds. Chromatographic columns for HPLC with graphene containing stationary phases may be used for separation of polar and nonpolar components of some specific mixtures. Graphene materials could be successfully employed during sample preparation for analysis with SPE, magnetic SPE, and SPME techniques. HighlightsThe review of the applications of graphene (G) and its derivatives, graphene oxide (GO) and reduced graphene oxide (rGO), in chemical and biochemical analysis is proposed.The electron donor-acceptor and proton donor-acceptor interactions for the graphene based materials – analytes systems and their impact on the analysis results are discussed, particularly: i) in electrochemistry,ii) in chromatography,iii) in modern sample preparation techniquesiv) in sensors of different types.The essence of the thermal stability and the nomenclature of the graphene based materials in their different applications in chemical systems of different classes was discussed (and suggested).The benefits of using SPME fibers with immobilized graphene materials have been presented in detail.

Sample Preparation

10.1080/10408347.2019.1653165

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Citations (51)

Acta Innovations (2018)

Ewa Kochańska Ryszard Gałczyński Andrzej Klimek H. Grajek J. Jonik

The tasks "Creation of the English versions of the Acta Innovations articles", "Selection & contracting of the renowned foreign reviewers for the assessment of received manuscripts", "Digitalisation of the Acta Innovations journal in order to provide the open access by the Internet" and "Maintenance of the anti-plagiarism system" are financed by an agreement 605/P-DUN/2018from the resources of Polish Ministry of Science and Higher Education dedicated to the activity popularising the science.

10.32933/10.32933/actainnovations.26

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An Attempt to Chromatographic Determination of Acceptor-Donor Properties of Liquid Crystals

Journal of Chromatography & Separation Techniques (2017)

H. Grajek Marcin Purchała

In order to obtain the most valuable information the Gibbs free energies of adsorption or solution, ΔG, should have been estimated in three ways on the basis of the retention times of the centre of gravity of the elution peak of the substances with defined physico-chemical properties. The temperature dependent van der Waals component of the surface free energy, dW s ν γ , has been estimated by employing the Dorris-Gray method and the Schultz method. The suggested approach has also been employed for carbon adsorbents on the basis of various literature data.

Acceptor

10.4172/2157-7064.1000383

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Citations (2)