Catalytically Graphitized Electrospun Carbon Nanofibers Adorned with Nickel Nanoparticles for Catalysis Applications

در اين مقاله روش الكتروريسي و پيش ماده نيكلي براي سنتز نانوفيبرهاي گرافيتي و نانوذرات نيكل تحت دماي نسبتا پايين استفاده شد. آناليز رامان و پراش اشعه X به وضوح گرافيتي شدن كاتاليستي نانوفيبرهاي كربني بر پايه پليمر توسط نانوذرات نيكل را نشان داد. نتايج حاصل از ميكروسكوپ الكتروني عبوري و روبشي نشان داد كه با افزايش دما اتم هاي نيكل در داخل فيبرهاي كربني نفوذ كرده و نانوذرات نيكل را در سطح تشكيل مي دهد. آناليز BET نشان داد كه نانوساختار به دست آمده مساحت سطحي بالايي در حد m2/g 140.2 دارد.

Catalytically graphitized electrospun carbon nanofibers adorned uniformly with fine nickel nanoparticles were successfully prepared. The procedure was based on the electrospinning technique and the use of nickel precursor to create both graphitized nanofibers and nickel nanoparticles under a relatively low-temperature heat treatment. The X-ray diffraction and Raman results clearly proved catalytic graphitization of polymer-based carbon fibers in the presence of nickel catalyst. Taking the results from scanning and transmission electron microscopies and X-ray diffraction into account, it was inferred that during the heat treatment, nickel atoms have diffused through the nanofibers and formed fine nickel nanoparticles on the surface of graphitized nanofibers to make a well stabilized heterogeneous nanostructure. The results from Brunauer–Emmett–Teller technique also showed a high surface area value of 140.2 m2 g-1 for the obtained structure. All these attributes along with the fibrous and porous structure enable the product to serve as a potential candidate in the catalysis applications.