Print ISSN: 1681-6900

Online ISSN: 2412-0758

Keywords : antibacterial activity

Synthesis, Antibacterial Activity of Tio2 Nanoparticles Suspension Induced by Laser Ablation in Liquid

khawlah S. Khashan; Ghassan M. Sulaima; Farah A. Abdul Ameer; Thorria R. Marzoog

Engineering and Technology Journal, 2014, Volume 32, Issue 5, Pages 877-884

Colloidal solutions of Titanium dioxide nanoparticles were synthesized by laser ablation of Titanium plate in deionized water. Studies of synthesized nanoparticles suspensions were characterized by UV-VIS absorption, Fourier transform infrared spectroscopy (FTIR) and transmission electron microscope (TEM). FTIR characterization confirms the formation of Titanium dioxide nanoparticles. TEM shows that the nanoparticles with sizes from (3 - 30) nm. The antimicrobial activity was carried out against Staphylococcus aureus and Escherichia coli. The Titanium dioxide nanoparticles showed inhibitory activity in bacteria.

Effect of Nano particles on Antibacterial Activity of AloeVera

Entessar H. Ali; Khawla S. khashan; Iman I. Jabber

Engineering and Technology Journal, 2014, Volume 32, Issue 1, Pages 54-60

In this work, synthesis of CdS nanoparticles with Aloe vera (L.) extract and its activity on bacterial pathogens was investigated. CdS nanoparticles were synthesized by using chemical methods. Physical properties like: X- ray diffraction (XRD), Atomic force microscopy (AFM) and UV-VIS transmission spectroscopy were employed to characterize the crystalline structure, size and transmission spectra of nanoparticles. X-ray diffraction analysis confirms the formation of cubical and hexagonal structures of CdS nanoparticle. The AFM show the formation of aggregate of nanoparticle with particle size ranging 7 – 20 (nm). The antibacterial activity of Aloe vera-conjugated CdS nanoparticles showed effective inhibitory activity against the pathogens.