LAUSR

Abstract In this paper, two new uranyl complexes (H2-bpp)[(UO2)(p-nba)3]2 1 and (H2-bipy)[(UO2)4(μ3–O)2(p-nba)6] 2 were synthesized by hydrothermal method base on the reaction of UO2Ac2·2H2O as the metal sources, p-nitrobenzoic acid (Hp-nba), 4,4′-bipyridine (bipy) and 1,3-di(4-pyridyl)-propane (bpp) as the ligands in an aqueous system. Complex 1 exhibits two crystallographically unique uranyl cation of 8-fold coordinated. Complex 2 presents a μ3-oxido bridged tetranuclear uranyl structural unit of edge-sharing polyhedral connection mode. These complexes were characterized by elemental analyses, IR spectra, thermogravimetric analyses (TGA), UV−Vis spectra and powder X-ray diffraction (XRD) patterns. The photoluminescence properties were investigated for the two complexes. 1 and 2 exhibit good photocatalytic activities for degradation of tetracycline hydrochloride (TC) under visible light irradiation. Moreover, it is verified that the kinetics of degradation rate was well described by the pseudo-first-order kinetics.