A facile co-precipitation synthesis of heterostructured ZrO2 vertical bar ZnO nanoparticles as efficient photocatalysts for wastewater treatment

作者：Quintana Alberto; Altube Ainhoa; Garcia Lecina Eva; Surinach Santiago; Dolors Baro Maria; Sort Jordi; Pellicer Eva; Guerrero Miguel

来源：Journal of Materials Science, 2017, 52(24): 13779-13789.

DOI：10.1007/s10853-017-1488-5

ZrO2-decorated ZnO (ZrO2|ZnO) nanoparticles (NPs) have been synthesized by a facile co-precipitation method in the presence of cetyltrimethylammonium bromide (CTAB) surfactant. The ZrO2 amount in the NPs has been varied from 1.0, 2.0, 4.9, to 9.3% by weight. The resulting NPs are heterostructured and consist of a crystalline ZnO core (wurtzite phase) surrounded by an amorphous ZrO2 layer. X-ray diffraction analyses support this observation. The NPs show a narrow size distribution and are slightly elongated. Compared to pure ZnO NPs, the hybrid ZrO2|ZnO ones show enhanced photocatalytic activity toward the degradation of Rhodamine B under UV-Vis light. Such enhancement has been partly attributed to the increased amount of oxygen vacancies when ZrO2 is incorporated into the NPs, as shown by X-ray photoelectron spectroscopy analyses.

• 出版日期2017-12