Rapid systhesis of graphene nanosheets and its structural properties study for direct methanol fuel cell

• Main Authors: Mohamad Nor, Nor Azureen, Jaafar, Juhana, Ismail, Ahmad Fauzi, Othman, Mohd. Hafiz Dzarfan, Rahman, Mukhlis A., Wan Salleh, Wan Norharyati, Yusof, Norhaniza, Lau, Woei Jye
• Format: Conference or Workshop Item
• Published: 2015
• Subjects: TP Chemical technology
• Online Access: http://eprints.utm.my/id/eprint/61772/; http://www.allconferencealerts.com/conference_details.php?eid=18338

Titanium dioxide nanofibers with diameter ranging to several nanometers were synthesized via electrospinning technique. The precursor solution was prepared by mixing the polyvinylpyrrolidone, PVP (MW-l,300,OOO) in ethanol, meanwhile titanium tetraisopropoxide, TTIP in acetic acid was slowly added into the solution under a vigorous stirring. The precursor solutions were then used in the electrospinning process under high voltage supply. As-spun nanofibers were heatted. under different temperature 400°C, 500°C and 600°C. The TiO2 nanofibers were characterized by using ,scanning electron microscopy (SEM), Brunauer Emmett-Teller (BET) and X-raY .diffraction (XRD). The results indicated that the heat treated Ti02 nanofibers consist of anatase and rutile phases. As the calcination temperature increased (400-500C), the anatase phase are greater than rutile phase and specific surface area are decreases while the calcination process influenced the nanofibers diameter.