Preparation and characterization of ZnO/ZnS hybrid photocatalysts via microwave-hydrothermal method |
| |
Authors: | Jinglian Zhao Liang Zhao Xinping Wang |
| |
Institution: | 1. State Key Laboratory of Multiphase Flow in Power Engineering; Department of Environmental Engineering, Xi’an Jiaotong University, Xi’an, 710049, China 2. Department of Physics and Astronomy, Rice University, Houston, TX, 77005-1657, USA
|
| |
Abstract: | The photocatalytic performance of ZnO/ZnS hybrid nanocomposite was largely higher than that of the mere ZnO or ZnS nanoparticles, but the complicated procedure and misdistribution of final products limited its large-scale productions. The exploration of a novel synthesis route of ZnO/ZnS hybrid photocatalysts with high catalytic performance is becoming a crucial step for the large-scale application of ZnO/ZnS hybrid photocatalytic technique. Preparation and characterization of nanosized ZnO/ZnS hybrid photocatalysts were studied in this paper. The photocatalysts were obtained via microwave-hydrothermal crystallization with the help of sodium citrate. The products were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), particle size distribution (PSD), and Fourier transformed infrared spectroscopy (FT-IR). The results indicated that so-synthesized ZnO/ZnS samples consisted of the high pure cubic (sphalerite) ZnS and hexagonal ZnO nanocrystallines with a narrow particle size distribution. The possible formation mechanisms of ZnO/ZnS nanocrystallines were mainly attributed to the superficially protective effect of citrate. The photocatalytic experiments demonstrated that the ZnO/ZnS photocatalysts exhibited a higher catalytic activity for the degradation of acid fuchsine than other monocomponents. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|