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Synthesis and characterization of Al-Y co-doped ZnO powders with high photocatalytic properties

JIA HONG ZHENG1,2,* , SHI FENG NIU3, RUO YAO ZHENG1, WEN XUE ZHANG1, PENG FEI YU1

Affiliation

  1. School of Materials Science and Engineering, Chang’an University, Xi’an 710064, P. R. China
  2. Key Laboratory of Preparation and Applications of Environmental Friendly Materials, Ministry of Education, Jilin Normal University, Siping 136000, P. R. China
  3. College Key laboratory automotive transportaion safety technology ministry of communication, chang’an university, xi’an, 710064, P. R. China

Abstract

A series of Zn0.93-xY0.07AlxO samples has been synthesized by the sol–gel method. The structural, optical and photocatalytic properties of the samples were investigated by X-ray diffraction (XRD), energy dispersive X-ray spectroscopy (EDX), X-ray photoelectron spectroscopy (XPS), UV-visible Spectroscopy (UV-Vis). The XRD results showed that all diffraction peaks corresponded to wurtzite structure of ZnO, the doping did not change the structure of ZnO. The values of crystallite particle size and lattice constant of c decrease with the increasing Al doping concentration. EDX measurements showed that Al and Y co-doped ZnO nanoparticles are made of Zn, O, Y, and Al. The photocatalytic activities results indicated that the increase of Al content from 1 to 15 at mol% effectively increased the degradation efficiency. The doping concentration of of 15at% of aluminum in the Al-Y co-doped ZnO is ideal for use in photocatalyst, which degraded almost all the dye (about a 100%) in only 20 min..

Keywords

Semiconductor, Al-Y co-doped ZnO; ZnO film, Photocatalytic properties.

Citation

JIA HONG ZHENG, SHI FENG NIU, RUO YAO ZHENG, WEN XUE ZHANG, PENG FEI YU, Synthesis and characterization of Al-Y co-doped ZnO powders with high photocatalytic properties, Optoelectronics and Advanced Materials - Rapid Communications, 10, 3-4, March-April 2016, pp.222-227 (2016).

Submitted at: Oct. 9, 2014

Accepted at: April 5, 2016