title: Synthesis, characterizations and anti-bacterial activities of pure and Ag doped CdO nanoparticles by chemical precipitation method.
abstract: In the present study, synthesized pure and Ag (1%, 2%, and 3%) doped Cadmium Oxide (CdO) nanoparticles by chemical precipitation method. Then, the synthesized products were characterized by thermo gravimetric-differential thermal analysis (TG-DTA), X-ray diffraction (XRD) analysis, Fourier transform infrared (FT-IR) spectroscopy, Ultra violet-Vis diffused reflectance spectroscopy (UV-Vis-DRS), Scanning electron microscopy (SEM), Energy dispersive X-rays (EDX) spectroscopy, and anti-bacterial activities, respectively. The transition temperatures and phase transitions of Cd(OH)2 to CdO at 400°C was confirmed by TG-DTA analysis. The XRD patterns show the cubic shape and average particle sizes are 21, 40, 34, and 37nm, respectively for pure and Ag doped samples. FT-IR study confirmed the presence of CdO and Ag at 677 and 459cm(-1), respectively. UV-Vis-DRS study shows the variation on direct and indirect band gaps. The surface morphologies and elemental analysis have been confirmed from SEM and with EDX. In addition, the synthesized products have been characterized by antibacterial activities against Gram-positive and negative bacteria. Further, the present investigation suggests that CdO nanoparticles have the great potential applications on various industrial and medical fields of research.
authors.affiliation: Department of Physics, Annamalai University, Annamalai Nagar, Tamil Nadu 608 002, India. Electronic address: girihari777@yahoo.com.
authors.forename: S
authors.initials: S
authors.lastname: Sivakumar
authors.affiliation: Department of Physics, Annamalai University, Annamalai Nagar, Tamil Nadu 608 002, India.
authors.forename: A
authors.initials: A
authors.lastname: Venkatesan
authors.affiliation: Department of Physics, Annamalai University, Annamalai Nagar, Tamil Nadu 608 002, India.
authors.forename: P
authors.initials: P
authors.lastname: Soundhirarajan
authors.affiliation: Department of Physics, Annamalai University, Annamalai Nagar, Tamil Nadu 608 002, India.
authors.forename: Chandra Prasad
authors.initials: CP
authors.lastname: Khatiwada
mesh_terms: D000900:Anti-Bacterial Agents / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology; D019187:Cadmium Compounds / Q000138:chemical synthesis / Q000737:chemistry* / Q000494:pharmacology; D011232:Chemical Precipitation; D004055:Differential Thermal Analysis; D053768:Metal Nanoparticles / Q000737:chemistry*; D008826:Microbial Sensitivity Tests; D008855:Microscopy, Electron, Scanning; D053761:Nanocomposites / Q000737:chemistry; D010087:Oxides / Q000138:chemical synthesis / Q000737:chemistry* / Q000494:pharmacology; D010316:Particle Size; D012834:Silver / Q000737:chemistry* / Q000494:pharmacology; D018030:Silver Compounds / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology; D017550:Spectroscopy, Fourier Transform Infrared; D014961:X-Ray Diffraction
chemical_list: D000900:Anti-Bacterial Agents; D019187:Cadmium Compounds; D010087:Oxides; D018030:Silver Compounds; C029663:cadmium oxide; D012834:Silver
keywords: FT-IR; Pure and Ag-CdO Nps; TG–DTA; UV–Vis-DRS; XRD