@article{Beiranvand_Nadri_Javanmard_2024, title={[Co(NH3)5(NO3)](NO3)2 as an energetic coordination precursor for the preparation of Co3O4 nanoparticles at low temperature}, volume={7}, url={https://oiccpress.com/international-journal-of-nano-dimension/article/conh35no3no32-as-an-energetic-coordination-precursor-for-the-preparation-of-co3o4-nanoparticles-at-low-temperature/}, DOI={10.7508/ijnd.2016.03.003}, abstractNote={In this paper, an energetic coordination compound namely pentamminenitratocobalt(III) nitrate, [Co(NH3)5(NO3)](NO3)2, was used as a new precursor for the preparation of Co3O4 nanoparticles. The results showed that the complex is easily decomposed into the Co3O4 nanoparticles at low temperature (200 °C) without employing a surfactant or solvent and any complicated equipment. The product was characterized by differential scanning calorimetry (DSC), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), transmission electron microscopy (TEM) and energy-dispersive X-ray spectroscopy (EDX). Optical and magnetic properties of the product were studied by UV-visible (UV-vis) spectroscopy and a vibrating sample magnetometer (VSM), respectively. FT-IR, XRD and EDS analyses confirmed the formation of highly pure spinel-type Co3O4 phase with cubic structure. TEM images showed that the Co3O4 nanoparticles are approximately in the range of 10 to 24 nm with a mean size of around 17 nm. The optical spectrum of the Co3O4 nanoparticles revealed the presence of two band gaps at 3.45 and 2.20 eV which are blue-shifted relative to reported values for the bulk sample. The magnetic measurement of the product showed a weak ferromagnetic order at room temperature.}, number={3}, journal={International Journal of Nano Dimension (Int. J. Nano Dimens.)}, publisher={OICC Press}, author={Beiranvand, Maryam and Nadri, Gholamali and Javanmard, Masoumeh}, year={2024}, month={Feb.}, keywords={Transition metal oxides, Co3O4 nanoparticles, Energetic complexes, Ferromagnetic order, Pentamminecobalt(III) complex, Thermolysis method} }