The preparation of ester heterocycles mostly uses heteroatoms as nucleophilic sites, which are achieved by intramolecular substitution or addition reactions. Compound: Tri-n-octylphosphine Oxide( cas:78-50-2 ) is researched.Recommanded Product: 78-50-2.Martinez-Iniesta, Armando D.; Morelos-Gomez, Aaron; Munoz-Sandoval, Emilio; Lopez-Urias, Florentino published the article 《Nitrogen-phosphorus doped graphitic nano onion-like structures: experimental and theoretical studies》 about this compound( cas:78-50-2 ) in RSC Advances. Keywords: nitrogen phosphorus graphitic nano onion structure. Let’s learn more about this compound (cas:78-50-2).
Onion-like graphitic structures are of great importance in different fields. Pentagons, heptagons, and octagons are essential features of onion-like graphitic structures that could generate important properties for diverse applications such as anodes in Li metal batteries or the oxygen reduction reaction. These carbon nanomaterials are fullerenes organized in a nested fashion. In this work, we produced graphitic nano onion-like structures containing phosphorus and nitrogen (NP-GNOs), using the aerosol assisted chem. vapor deposition method. The NP-GNOs were grown at high temperature (1020 °C) using ferrocene, trioctylphosphine oxide, benzylamine, and THF precursors. The morphol., structure, composition, and surface chem. of NP-GNOs were characterized using different techniques. The NP-GNOs showed diameters of 110-780 nm with Fe-based nanoparticles inside. Thermogravimetric anal. showed that NP-GNOs are thermally stable with an oxidation temperature of 724 °C. The surface chem. anal. by FTIR and XPS revealed phosphorus-nitrogen codoping, and several functionalities containing C-H, N-H, P-H, P-O, P = O, C = O, and C-O bonds. We show d. functional theory calculations of phosphorus-nitrogen doping and functionalized C240 fullerenes. We present the optimized structures, electronic d. of states, HOMO, and LUMO wave functions for P-doped and OH-functionalized fullerenes. The P = O and P-O bonds attributed to phosphates or hydroxyl groups attached to phosphorus atoms doping the NP-GNOs could be useful in improving supercapacitor function.
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Reference:
Chapter 1 An introduction to palladium catalysis,
Palladium/carbon catalyst regeneration and mechanical application method