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    Wyświetlanie 1-2 z 2
    Tytuł:
    Materiały kompozytowe MOF-grafen
    MOF-graphene composites
    Autorzy:
    Szczęśniak, B.
    Choma, J.
    Jaroniec, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/171770.pdf
    Data publikacji:
    2017
    Wydawca:
    Polskie Towarzystwo Chemiczne
    Tematy:
    kompozyty MOF-grafen
    adsorpcja gazów
    magazynowanie gazów
    adsorbenty
    CO2
    VOCs
    H2
    CH4
    MOF-graphene composites
    gas adsorption
    gas storage
    adsorbent
    Opis:
    The effective capture of harmful gases and clean energy sources are of great importance for protection of the environment. In this regard, it is possible to take advantage of the MOF-graphene composites to develop new technologies for environmental and energy-related applications. These composites attract a great attention around the world due to their higher adsorption affinity toward CO2, volatile organic compounds (VOCs), H2 and CH4 reported in comparison to the parent MOFs. Integration of MOFs with graphene nanosheets can be a very effective strategy not only to improve their adsorption performance but also to generate new chemical and physical properties that are not present in MOFs alone. In this review we present the progress in the field of gas capture/storage using MOF-graphene composites with special attention on the correlation between composition, structure and adsorption properties.
    Źródło:
    Wiadomości Chemiczne; 2017, 71, 9-10; 671-691
    0043-5104
    2300-0295
    Pojawia się w:
    Wiadomości Chemiczne
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Otrzymywanie i właściwości adsorpcyjne materiałów grafenowych
    Synthesis and adsorption properties of graphene–based materials
    Autorzy:
    Szczęśniak, B.
    Choma, J.
    Jaroniec, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/172113.pdf
    Data publikacji:
    2016
    Wydawca:
    Polskie Towarzystwo Chemiczne
    Tematy:
    grafen
    synteza materiałów grafenowych
    adsorpcja dwutlenku węgla
    adsorpcja wodoru
    graphene
    synthesis of graphene–based materials
    carbon dioxide adsorption
    hydrogen adsorption
    Opis:
    New, efficient and cost effective methods for CO2 capture are needed to keep the clean environment in the era of rising energy demand. Hydrogen is being considered as an ideal energy source for replacing fossil fuels. Since the breakthrough work in Science on graphene published in 2004 [22], this material has been intensively studied because of its great potential for applications in many fields of modern technology such as electronics [94–96], energy storage [21, 110, 111] and gas detection [13, 16]. As a two–dimensional, crystalline carbon material, graphene is characterized by superior chemicals and physical properties [2, 5]. The large theoretical specific surface area of graphene (2630 m2/g [89]) makes it an excellent material for adsorption applications. Furthermore, graphene– based materials could be doped by heteroatoms (e.g. B [72], N [106]) or decorated with various nanoparticles (e.g. Fe [55], Pd [106], Fe3O4 [8], V2O5 [79], TiO2 [79]), which significantly improves their adsorption properties. Specific mechanism CO2 [8] and H2 [104–106] takes place during adsorption processes on some graphene materials containing metal or metal oxide nanoparticles on their surfaces. In this review, the major methods for synthesis of graphene and graphene– based materials are discussed with particular emphasis on “chemical exfoliation”. The possibility of obtaining a high quality graphene material from waste materials such as polystyrene or biological materials such as crustacean skin [37, 41] is also reviewed. An overview of the newest synthesis methods of graphene [46] and modified graphene materials including polymer nanocomposites [61, 62] is presented too. A particular attention is given to CO2 and H2 adsorption properties of graphene– based materials [8, 62, 106]. Fe3O4 and Pd decorated graphene materials [8, 106–108] are ones of the most effective adsorbents described so far. These materials show a maximum CO2 adsorption capacity of 60 mmol/g at 25°C and 11 bar [8] and a maximum hydrogen uptake capacity of 4,4 wt% at 25°C and 40 bar [106]. It seems, that modified graphene materials can compete successfully with the currently used adsorbents, including nanoporous carbonaceous materials such as activated carbons, fullerenes, carbon nanotubes [8, 21] or ordered mesoporous carbon materials.
    Źródło:
    Wiadomości Chemiczne; 2016, 70, 3-4; 189-217
    0043-5104
    2300-0295
    Pojawia się w:
    Wiadomości Chemiczne
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-2 z 2

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