Partic. vol. 10 no. 3 pp. 388-391 (June 2012)
doi: 10.1016/j.partic.2011.06.010

Short communication

Hydrothermal preparation of nanocrystalline ZnO2

Guipeng Feng^a, Liyun Yang^{a, *}, Tianxi Wang^b, Jiamin Zhang^b, Tianjun Lou^b

liyunyang188@163.com

Abstract

A green hydrothermal method was proposed for the synthesis of nanocrystalline ZnO₂, using Zn₅(CO₃)₂(OH)₆ powder and 6 vol% H₂O₂ aqueous solution as the starting materials. Characterization results from X-ray diffraction, Raman, high resolution transmission electron microscopy and selected area electron diffraction revealed that the products synthesized at 80–120 °C for 6–18 h were pure cubic phase ZnO₂ nanocrystals. Room temperature photoluminescence spectra of the as-synthesized ZnO₂ nanocrystals displayed a wide and strong emission band in the visible region of about 525–570 nm upon laser excitation at 325 nm, which may have originated from their surface state and other crystal defects.

Graphical abstract

Keywords

Zinc peroxide; Nanocrystals; Semiconductors; Hydrothermal synthesis; Photoluminescence