Key roles of solution pH and ligands in the synthesis of aqueous ZnTe nanoparticles Article

cited authors

  • Xu, S; Wang, C; Xu, Q; Zhang, H; Li, R; Shao, H; Lei, W; Cui, Y

fiu authors

abstract

  • In this work, we reported original synthesis of ZnTe nanoparticles in aqueous solution. The solution pH is believed to be a major factor governing the synthesis of thioglycolic acid (TGA)-capped ZnTe nanoparticles. In the pH range of 5.9-7.1 and the pH range over 10.0, TGA-capped ZnTe nanoparticles can be successfully prepared. In the pH range of 7.1-10.0, TGA-capped ZnTe nanoparticles rapidly precipitate from the solution, which is caused by the formation of Zn(OH)2 precipitates and the strong adsorption incapacity of Zn(OH)2 with TGA-capped ZnTe nanoparticles. When 1-thiolglycerol (TG) is selected as the ligand, ZnTe nanoparticles show good stability in the pH range of 7.1-10.0 due to the weak adsorption capacity of Zn(OH)2 with TG-capped ZnTe nanoparticles. As a result, ZnTe nanoparticles can be prepared in a wide pH range using TGA and TG as the ligands. © 2010 American Chemical Society.

publication date

  • November 9, 2010

Digital Object Identifier (DOI)

start page

  • 5838

end page

  • 5844

volume

  • 22

issue

  • 21