Nano Express

Nanoscale Research Letters

, Volume 5, Issue 6, pp 961-965

Open Access This content is freely available online to anyone, anywhere at any time.

Controllable Synthesis of Single-Crystalline CdO and Cd(OH)2 Nanowires by a Simple Hydrothermal Approach

  • Zai-xing YangAffiliated withNanjing National Laboratory of Microstructures and Department of Physics, Nanjing University
  • , Wei ZhongAffiliated withNanjing National Laboratory of Microstructures and Department of Physics, Nanjing University Email author 
  • , Yan-xue YinAffiliated withLaser Institute, Qufu Normal University
  • , Xin DuAffiliated withNanjing National Laboratory of Microstructures and Department of Physics, Nanjing University
  • , Yu DengAffiliated withNanjing National Laboratory of Microstructures and Department of Physics, Nanjing University
  • , Chaktong AuAffiliated withChemistry Department, Hong Kong Baptist University
  • , You-wei DuAffiliated withNanjing National Laboratory of Microstructures and Department of Physics, Nanjing University

Abstract

Single-crystalline Cd(OH)2 or CdO nanowires can be selectively synthesized at 150 °C by a simple hydrothermal method using aqueous Cd(NO3)2 as precursor. The method is biosafe, and compared to the conventional oil-water surfactant approach, more environmental-benign. As revealed by the XRD results, CdO or Cd(OH)2 nanowires can be generated in high purity by varying the time of synthesis. The results of FESEM and HRTEM analysis show that the CdO nanowires are formed in bundles. Over the CdO-nanowire bundles, photoluminescence at ~517 nm attributable to near band-edge emission of CdO was recorded. Based on the experimental results, a possible growth mechanism of the products is proposed.

Keywords

CdO Cd(OH)2 Nanowires Hydrothermal Photoluminescence