Papers by Author: S. Suhaizam

Abstract: Nanowires V₂O₅ was synthesized by sonochemical pretreatment using NaNO₃ in several durations (30 – 120 min). XRD patterns of the sonicated V₂O₅ gave similar structure with a pure V₂O₅ phase without the presence of other diffraction peaks which attributed to any different phases. Prolonged the duration of sonication also has led to an increased in the intensity peaks of the diffraction peaks_, which indicate relatively high crystallinity. TEM micrographs show that after 120 min pretreatment, nanowires V₂O₅ with much smaller diameter (~10 – 15 nm) was produced and has explained the main factor for the decrement in the crystallite sizes of the sonicated V₂O₅ found in the XRD data. The TEM micrographs also show that the sonicated V₂O₅ formed bulk of nanowires V₂O₅ when the duration of sonication was prolonged. The high energy of ultrasonic pretreatment induced the self-assembled phenomenon which caused the nanowires V₂O₅ to agglomerate and formed bundle.