A three-dimensional porous coordination polymer, [Pb(4-bpdh)(NO3)(H2O)(n) (TMU-1), has been synthesized with reaction of lead(II) nitrate and 2,5-bis(4-pyridyl)-3,4-diaza-2,4-hexadiene (4-bpdh). When solid TMU-1 was immersed in the ethanol solution of AgNO3 for 5, 15 or 60 min and 20 h at room temperature, solid including Ag nanoparticles is formed (Ag@TMU-1), as evidenced by HRTEM images and EDX spectrum. The visible fluorescence study of Ag@TMU-1 is another evidence for loading of silver nanoparticles on TMU-1. Silver oxide and silver nanoparticles supported on nanocrystalline PbO were synthesized by heating of Ag@TMU-1 in air and Ar at 600 degrees C, respectively. The visible fluorescence study of Ag@TMU-1 is another evidence for loading of silver nanoparticles on TMU-1. (C) 2014 Elsevier B.V. All rights reserved.